feat(package): bump version

perf: Optimize document filtering and sorting for performance

.gitignore

@@ -6,6 +6,7 @@ yarn-error.log
 # Build output
 /.next/
 /out/
+/dist/
 
 # IDE/Editor specific
 .vscode/
@@ -31,4 +32,7 @@ logs/
 
 # Miscellaneous
 .DS_Store
-Thumbs.db
+Thumbs.db
+
+# Db
+db.sqlite

README.md

@@ -10,9 +10,12 @@
 - [Installation](#installation)
   - [Getting Started with Docker (Recommended)](#getting-started-with-docker-recommended)
   - [Non-Docker Installation](#non-docker-installation)
+  - [Ollama Connection Errors](#ollama-connection-errors)
+- [Using as a Search Engine](#using-as-a-search-engine)
 - [One-Click Deployment](#one-click-deployment)
 - [Upcoming Features](#upcoming-features)
 - [Support Us](#support-us)
+  - [Donations](#donations)
 - [Contribution](#contribution)
 - [Help and Support](#help-and-support)
 
@@ -64,7 +67,8 @@ There are mainly 2 ways of installing Perplexica - With Docker, Without Docker.
 
    - `OPENAI`: Your OpenAI API key. **You only need to fill this if you wish to use OpenAI's models**.
    - `OLLAMA`: Your Ollama API URL. You should enter it as `http://host.docker.internal:PORT_NUMBER`. If you installed Ollama on port 11434, use `http://host.docker.internal:11434`. For other ports, adjust accordingly. **You need to fill this if you wish to use Ollama's models instead of OpenAI's**.
-   - `GROQ`: Your Groq API key. **You only need to fill this if you wish to use Groq's hosted models**
+   - `GROQ`: Your Groq API key. **You only need to fill this if you wish to use Groq's hosted models**.
+   - `ANTHROPIC`: Your Anthropic API key. **You only need to fill this if you wish to use Anthropic models**.
 
      **Note**: You can change these after starting Perplexica from the settings dialog.
 
@@ -82,29 +86,69 @@ There are mainly 2 ways of installing Perplexica - With Docker, Without Docker.
 
 ### Non-Docker Installation
 
-1. Clone the repository and rename the `sample.config.toml` file to `config.toml` in the root directory. Ensure you complete all required fields in this file.
-2. Rename the `.env.example` file to `.env` in the `ui` folder and fill in all necessary fields.
-3. After populating the configuration and environment files, run `npm i` in both the `ui` folder and the root directory.
-4. Install the dependencies and then execute `npm run build` in both the `ui` folder and the root directory.
-5. Finally, start both the frontend and the backend by running `npm run start` in both the `ui` folder and the root directory.
+1. Install SearXNG and allow `JSON` format in the SearXNG settings.
+2. Clone the repository and rename the `sample.config.toml` file to `config.toml` in the root directory. Ensure you complete all required fields in this file.
+3. Rename the `.env.example` file to `.env` in the `ui` folder and fill in all necessary fields.
+4. After populating the configuration and environment files, run `npm i` in both the `ui` folder and the root directory.
+5. Install the dependencies and then execute `npm run build` in both the `ui` folder and the root directory.
+6. Finally, start both the frontend and the backend by running `npm run start` in both the `ui` folder and the root directory.
 
 **Note**: Using Docker is recommended as it simplifies the setup process, especially for managing environment variables and dependencies.
 
+See the [installation documentation](https://github.com/ItzCrazyKns/Perplexica/tree/master/docs/installation) for more information like exposing it your network, etc.
+
+### Ollama Connection Errors
+
+If you're encountering an Ollama connection error, it is likely due to the backend being unable to connect to Ollama's API. To fix this issue you can:
+
+1. **Check your Ollama API URL:** Ensure that the API URL is correctly set in the settings menu.
+2. **Update API URL Based on OS:**
+
+   - **Windows:** Use `http://host.docker.internal:11434`
+   - **Mac:** Use `http://host.docker.internal:11434`
+   - **Linux:** Use `http://<private_ip_of_host>:11434`
+
+   Adjust the port number if you're using a different one.
+
+3. **Linux Users - Expose Ollama to Network:**
+
+   - Inside `/etc/systemd/system/ollama.service`, you need to add `Environment="OLLAMA_HOST=0.0.0.0"`. Then restart Ollama by `systemctl restart ollama`. For more information see [Ollama docs](https://github.com/ollama/ollama/blob/main/docs/faq.md#setting-environment-variables-on-linux)
+
+   - Ensure that the port (default is 11434) is not blocked by your firewall.
+
+## Using as a Search Engine
+
+If you wish to use Perplexica as an alternative to traditional search engines like Google or Bing, or if you want to add a shortcut for quick access from your browser's search bar, follow these steps:
+
+1. Open your browser's settings.
+2. Navigate to the 'Search Engines' section.
+3. Add a new site search with the following URL: `http://localhost:3000/?q=%s`. Replace `localhost` with your IP address or domain name, and `3000` with the port number if Perplexica is not hosted locally.
+4. Click the add button. Now, you can use Perplexica directly from your browser's search bar.
+
 ## One-Click Deployment
 
 [![Deploy to RepoCloud](https://d16t0pc4846x52.cloudfront.net/deploylobe.svg)](https://repocloud.io/details/?app_id=267)
 
 ## Upcoming Features
 
-- [ ] Finalizing Copilot Mode
 - [x] Add settings page
 - [x] Adding support for local LLMs
-- [ ] Adding Discover and History Saving features
+- [x] History Saving features
 - [x] Introducing various Focus Modes
+- [ ] Finalizing Copilot Mode
+- [ ] Adding Discover
 
 ## Support Us
 
-If you find Perplexica useful, consider giving us a star on GitHub. This helps more people discover Perplexica and supports the development of new features. Your support is appreciated.
+If you find Perplexica useful, consider giving us a star on GitHub. This helps more people discover Perplexica and supports the development of new features. Your support is greatly appreciated.
+
+### Donations
+
+We also accept donations to help sustain our project. If you would like to contribute, you can use the following options to donate. Thank you for your support!
+
+| Ethereum                                              |
+| ----------------------------------------------------- |
+| Address: `0xB025a84b2F269570Eb8D4b05DEdaA41D8525B6DD` |
 
 ## Contribution
 

backend.dockerfile

@@ -1,4 +1,4 @@
-FROM node:alpine
+FROM node:slim
 
 ARG SEARXNG_API_URL
 
@@ -7,12 +7,15 @@ WORKDIR /home/perplexica
 COPY src /home/perplexica/src
 COPY tsconfig.json /home/perplexica/
 COPY config.toml /home/perplexica/
+COPY drizzle.config.ts /home/perplexica/
 COPY package.json /home/perplexica/
 COPY yarn.lock /home/perplexica/
 
 RUN sed -i "s|SEARXNG = \".*\"|SEARXNG = \"${SEARXNG_API_URL}\"|g" /home/perplexica/config.toml
 
-RUN yarn install
+RUN mkdir /home/perplexica/data
+
+RUN yarn install 
 RUN yarn build
 
 CMD ["yarn", "start"]

data/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

docker-compose.yaml

@@ -1,14 +1,13 @@
 services:
   searxng:
-    build:
-      context: .
-      dockerfile: searxng.dockerfile
-    expose:
-      - 4000
+    image: docker.io/searxng/searxng:latest
+    volumes:
+      - ./searxng:/etc/searxng:rw
     ports:
       - 4000:8080
     networks:
       - perplexica-network
+    restart: unless-stopped
 
   perplexica-backend:
     build:
@@ -18,12 +17,15 @@ services:
         - SEARXNG_API_URL=http://searxng:8080
     depends_on:
       - searxng
-    expose:
-      - 3001
     ports:
       - 3001:3001
+    volumes:
+      - backend-dbstore:/home/perplexica/data
+    extra_hosts:
+      - 'host.docker.internal:host-gateway'
     networks:
       - perplexica-network
+    restart: unless-stopped
 
   perplexica-frontend:
     build:
@@ -34,12 +36,14 @@ services:
         - NEXT_PUBLIC_WS_URL=ws://127.0.0.1:3001
     depends_on:
       - perplexica-backend
-    expose:
-      - 3000
     ports:
       - 3000:3000
     networks:
       - perplexica-network
+    restart: unless-stopped
 
 networks:
   perplexica-network:
+
+volumes:
+  backend-dbstore:

docs/architecture/WORKING.md

@@ -5,7 +5,7 @@ Curious about how Perplexica works? Don't worry, we'll cover it here. Before we
 We'll understand how Perplexica works by taking an example of a scenario where a user asks: "How does an A.C. work?". We'll break down the process into steps to make it easier to understand. The steps are as follows:
 
 1. The message is sent via WS to the backend server where it invokes the chain. The chain will depend on your focus mode. For this example, let's assume we use the "webSearch" focus mode.
-2. The chain is now invoked; first, the message is passed to another chain where it first predicts (using the chat history and the question) whether there is a need for sources or searching the web. If there is, it will generate a query (in accordance with the chat history) for searching the web that we'll take up later. If not, the chain will end there, and then the answer generator chain, also known as the response generator, will be started.
+2. The chain is now invoked; first, the message is passed to another chain where it first predicts (using the chat history and the question) whether there is a need for sources and searching the web. If there is, it will generate a query (in accordance with the chat history) for searching the web that we'll take up later. If not, the chain will end there, and then the answer generator chain, also known as the response generator, will be started.
 3. The query returned by the first chain is passed to SearXNG to search the web for information.
 4. After the information is retrieved, it is based on keyword-based search. We then convert the information into embeddings and the query as well, then we perform a similarity search to find the most relevant sources to answer the query.
 5. After all this is done, the sources are passed to the response generator. This chain takes all the chat history, the query, and the sources. It generates a response that is streamed to the UI.

docs/installation/NETWORKING.md

@@ -0,0 +1,109 @@
+# Expose Perplexica to a network
+
+This guide will show you how to make Perplexica available over a network. Follow these steps to allow computers on the same network to interact with Perplexica. Choose the instructions that match the operating system you are using.
+
+## Windows
+
+1. Open PowerShell as Administrator
+
+2. Navigate to the directory containing the `docker-compose.yaml` file
+
+3. Stop and remove the existing Perplexica containers and images:
+
+```
+docker compose down --rmi all
+```
+
+4. Open the `docker-compose.yaml` file in a text editor like Notepad++
+
+5. Replace `127.0.0.1` with the IP address of the server Perplexica is running on in these two lines:
+
+```
+args:
+  - NEXT_PUBLIC_API_URL=http://127.0.0.1:3001/api
+  - NEXT_PUBLIC_WS_URL=ws://127.0.0.1:3001
+```
+
+6. Save and close the `docker-compose.yaml` file
+
+7. Rebuild and restart the Perplexica container:
+
+```
+docker compose up -d --build
+```
+
+## macOS
+
+1. Open the Terminal application
+
+2. Navigate to the directory with the `docker-compose.yaml` file:
+
+```
+cd /path/to/docker-compose.yaml
+```
+
+3. Stop and remove existing containers and images:
+
+```
+docker compose down --rmi all
+```
+
+4. Open `docker-compose.yaml` in a text editor like Sublime Text:
+
+```
+nano docker-compose.yaml
+```
+
+5. Replace `127.0.0.1` with the server IP in these lines:
+
+```
+args:
+  - NEXT_PUBLIC_API_URL=http://127.0.0.1:3001/api
+  - NEXT_PUBLIC_WS_URL=ws://127.0.0.1:3001
+```
+
+6. Save and exit the editor
+
+7. Rebuild and restart Perplexica:
+
+```
+docker compose up -d --build
+```
+
+## Linux
+
+1. Open the terminal
+
+2. Navigate to the `docker-compose.yaml` directory:
+
+```
+cd /path/to/docker-compose.yaml
+```
+
+3. Stop and remove containers and images:
+
+```
+docker compose down --rmi all
+```
+
+4. Edit `docker-compose.yaml`:
+
+```
+nano docker-compose.yaml
+```
+
+5. Replace `127.0.0.1` with the server IP:
+
+```
+args:
+  - NEXT_PUBLIC_API_URL=http://127.0.0.1:3001/api
+  - NEXT_PUBLIC_WS_URL=ws://127.0.0.1:3001
+```
+
+6. Save and exit the editor
+
+7. Rebuild and restart Perplexica:
+
+```
+docker compose up -d --build
+```

docs/installation/UPDATING.md

@@ -0,0 +1,34 @@
+# Update Perplexica to the latest version
+
+To update Perplexica to the latest version, follow these steps:
+
+## For Docker users
+
+1. Clone the latest version of Perplexica from GitHub:
+
+```bash
+   git clone https://github.com/ItzCrazyKns/Perplexica.git
+```
+
+2. Navigate to the Project Directory
+
+3. Update and Rebuild Docker Containers:
+
+```bash
+docker compose up -d --build
+```
+
+4. Once the command completes running go to http://localhost:3000 and verify the latest changes.
+
+## For non Docker users
+
+1. Clone the latest version of Perplexica from GitHub:
+
+```bash
+   git clone https://github.com/ItzCrazyKns/Perplexica.git
+```
+
+2. Navigate to the Project Directory
+3. Execute `npm i` in both the `ui` folder and the root directory.
+4. Once packages are updated, execute `npm run build` in both the `ui` folder and the root directory.
+5. Finally, start both the frontend and the backend by running `npm run start` in both the `ui` folder and the root directory.

drizzle.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'drizzle-kit';
+
+export default defineConfig({
+  dialect: 'sqlite',
+  schema: './src/db/schema.ts',
+  out: './drizzle',
+  dbCredentials: {
+    url: './data/db.sqlite',
+  },
+});

package.json

@@ -1,19 +1,24 @@
 {
   "name": "perplexica-backend",
-  "version": "1.3.2",
+  "version": "1.9.0-rc2",
   "license": "MIT",
   "author": "ItzCrazyKns",
   "scripts": {
-    "start": "node dist/app.js",
+    "start": "npm run db:push && node dist/app.js",
     "build": "tsc",
     "dev": "nodemon src/app.ts",
+    "db:push": "drizzle-kit push sqlite",
     "format": "prettier . --check",
     "format:write": "prettier . --write"
   },
   "devDependencies": {
+    "@types/better-sqlite3": "^7.6.10",
     "@types/cors": "^2.8.17",
     "@types/express": "^4.17.21",
+    "@types/html-to-text": "^9.0.4",
+    "@types/pdf-parse": "^1.1.4",
     "@types/readable-stream": "^4.0.11",
+    "drizzle-kit": "^0.22.7",
     "nodemon": "^3.1.0",
     "prettier": "^3.2.5",
     "ts-node": "^10.9.2",
@@ -21,16 +26,23 @@
   },
   "dependencies": {
     "@iarna/toml": "^2.2.5",
+    "@langchain/anthropic": "^0.2.3",
+    "@langchain/community": "^0.2.16",
     "@langchain/openai": "^0.0.25",
+    "@xenova/transformers": "^2.17.1",
     "axios": "^1.6.8",
+    "better-sqlite3": "^11.0.0",
     "compute-cosine-similarity": "^1.1.0",
     "compute-dot": "^1.1.0",
     "cors": "^2.8.5",
     "dotenv": "^16.4.5",
+    "drizzle-orm": "^0.31.2",
     "express": "^4.19.2",
+    "html-to-text": "^9.0.5",
     "langchain": "^0.1.30",
+    "pdf-parse": "^1.1.1",
     "winston": "^3.13.0",
-    "ws": "^8.16.0",
+    "ws": "^8.17.1",
     "zod": "^3.22.4"
   }
 }

sample.config.toml

@@ -5,7 +5,8 @@ SIMILARITY_MEASURE = "cosine" # "cosine" or "dot"
 [API_KEYS]
 OPENAI = "" # OpenAI API key - sk-1234567890abcdef1234567890abcdef
 GROQ = "" # Groq API key - gsk_1234567890abcdef1234567890abcdef
+ANTHROPIC = "" # Anthropic API key - sk-ant-1234567890abcdef1234567890abcdef
 
 [API_ENDPOINTS]
 SEARXNG = "http://localhost:32768" # SearxNG API URL
-OLLAMA = "" # Ollama API URL - http://host.docker.internal:11434
+OLLAMA = "" # Ollama API URL - http://host.docker.internal:11434

searxng.dockerfile

@@ -1,3 +0,0 @@
-FROM searxng/searxng
-
-COPY searxng-settings.yml /etc/searxng/settings.yml

searxng/limiter.toml

@@ -0,0 +1,3 @@
+[botdetection.ip_limit]
+# activate link_token method in the ip_limit method
+link_token = true

searxng/settings.yml

@@ -0,0 +1,17 @@
+use_default_settings: true
+
+general:
+  instance_name: 'searxng'
+
+search:
+  autocomplete: 'google'
+  formats:
+    - html
+    - json
+
+server:
+  secret_key: 'a2fb23f1b02e6ee83875b09826990de0f6bd908b6638e8c10277d415f6ab852b' # Is overwritten by ${SEARXNG_SECRET}
+
+engines:
+  - name: wolframalpha
+    disabled: false

searxng/uwsgi.ini

@@ -0,0 +1,50 @@
+[uwsgi]
+# Who will run the code
+uid = searxng
+gid = searxng
+
+# Number of workers (usually CPU count)
+# default value: %k (= number of CPU core, see Dockerfile)
+workers = %k
+
+# Number of threads per worker
+# default value: 4 (see Dockerfile)
+threads = 4
+
+# The right granted on the created socket
+chmod-socket = 666
+
+# Plugin to use and interpreter config
+single-interpreter = true
+master = true
+plugin = python3
+lazy-apps = true
+enable-threads = 4
+
+# Module to import
+module = searx.webapp
+
+# Virtualenv and python path
+pythonpath = /usr/local/searxng/
+chdir = /usr/local/searxng/searx/
+
+# automatically set processes name to something meaningful
+auto-procname = true
+
+# Disable request logging for privacy
+disable-logging = true
+log-5xx = true
+
+# Set the max size of a request (request-body excluded)
+buffer-size = 8192
+
+# No keep alive
+# See https://github.com/searx/searx-docker/issues/24
+add-header = Connection: close
+
+# uwsgi serves the static files
+static-map = /static=/usr/local/searxng/searx/static
+# expires set to one day
+static-expires = /* 86400
+static-gzip-all = True
+offload-threads = 4

src/agents/academicSearchAgent.ts

@@ -19,6 +19,7 @@ import formatChatHistoryAsString from '../utils/formatHistory';
 import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 import logger from '../utils/logger';
+import { IterableReadableStream } from '@langchain/core/utils/stream';
 
 const basicAcademicSearchRetrieverPrompt = `
 You will be given a conversation below and a follow up question. You need to rephrase the follow-up question if needed so it is a standalone question that can be used by the LLM to search the web for information.
@@ -44,7 +45,7 @@ Rephrased question:
 const basicAcademicSearchResponsePrompt = `
     You are Perplexica, an AI model who is expert at searching the web and answering user's queries. You are set on focus mode 'Academic', this means you will be searching for academic papers and articles on the web.
 
-    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containg a brief description of the content of that page).
+    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containing a brief description of the content of that page).
     You must use this context to answer the user's query in the best way possible. Use an unbaised and journalistic tone in your response. Do not repeat the text.
     You must not tell the user to open any link or visit any website to get the answer. You must provide the answer in the response itself. If the user asks for links you can provide them.
     Your responses should be medium to long in length be informative and relevant to the user's query. You can use markdowns to format your response. You should use bullet points to list the information. Make sure the answer is not short and is informative.
@@ -52,7 +53,7 @@ const basicAcademicSearchResponsePrompt = `
     Place these citations at the end of that particular sentence. You can cite the same sentence multiple times if it is relevant to the user's query like [number1][number2].
     However you do not need to cite it using the same number. You can use different numbers to cite the same sentence multiple times. The number refers to the number of the search result (passed in the context) used to generate that part of the answer.
 
-    Aything inside the following \`context\` HTML block provided below is for your knowledge returned by the search engine and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
+    Anything inside the following \`context\` HTML block provided below is for your knowledge returned by the search engine and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
     talk about the context in your response. 
 
     <context>
@@ -66,7 +67,7 @@ const basicAcademicSearchResponsePrompt = `
 const strParser = new StringOutputParser();
 
 const handleStream = async (
-  stream: AsyncGenerator<StreamEvent, any, unknown>,
+  stream: IterableReadableStream<StreamEvent>,
   emitter: eventEmitter,
 ) => {
   for await (const event of stream) {

src/agents/redditSearchAgent.ts

@@ -19,6 +19,7 @@ import formatChatHistoryAsString from '../utils/formatHistory';
 import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 import logger from '../utils/logger';
+import { IterableReadableStream } from '@langchain/core/utils/stream';
 
 const basicRedditSearchRetrieverPrompt = `
 You will be given a conversation below and a follow up question. You need to rephrase the follow-up question if needed so it is a standalone question that can be used by the LLM to search the web for information.
@@ -44,7 +45,7 @@ Rephrased question:
 const basicRedditSearchResponsePrompt = `
     You are Perplexica, an AI model who is expert at searching the web and answering user's queries. You are set on focus mode 'Reddit', this means you will be searching for information, opinions and discussions on the web using Reddit.
 
-    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containg a brief description of the content of that page).
+    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containing a brief description of the content of that page).
     You must use this context to answer the user's query in the best way possible. Use an unbaised and journalistic tone in your response. Do not repeat the text.
     You must not tell the user to open any link or visit any website to get the answer. You must provide the answer in the response itself. If the user asks for links you can provide them.
     Your responses should be medium to long in length be informative and relevant to the user's query. You can use markdowns to format your response. You should use bullet points to list the information. Make sure the answer is not short and is informative.
@@ -52,8 +53,8 @@ const basicRedditSearchResponsePrompt = `
     Place these citations at the end of that particular sentence. You can cite the same sentence multiple times if it is relevant to the user's query like [number1][number2].
     However you do not need to cite it using the same number. You can use different numbers to cite the same sentence multiple times. The number refers to the number of the search result (passed in the context) used to generate that part of the answer.
 
-    Aything inside the following \`context\` HTML block provided below is for your knowledge returned by Reddit and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
-    talk about the context in your response. 
+    Anything inside the following \`context\` HTML block provided below is for your knowledge returned by Reddit and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to
+    talk about the context in your response.
 
     <context>
     {context}
@@ -66,7 +67,7 @@ const basicRedditSearchResponsePrompt = `
 const strParser = new StringOutputParser();
 
 const handleStream = async (
-  stream: AsyncGenerator<StreamEvent, any, unknown>,
+  stream: IterableReadableStream<StreamEvent>,
   emitter: eventEmitter,
 ) => {
   for await (const event of stream) {
@@ -177,9 +178,9 @@ const createBasicRedditSearchAnsweringChain = (
     });
 
     const sortedDocs = similarity
+      .filter((sim) => sim.similarity > 0.3)
       .sort((a, b) => b.similarity - a.similarity)
       .slice(0, 15)
-      .filter((sim) => sim.similarity > 0.3)
       .map((sim) => docsWithContent[sim.index]);
 
     return sortedDocs;

src/agents/suggestionGeneratorAgent.ts

@@ -0,0 +1,55 @@
+import { RunnableSequence, RunnableMap } from '@langchain/core/runnables';
+import ListLineOutputParser from '../lib/outputParsers/listLineOutputParser';
+import { PromptTemplate } from '@langchain/core/prompts';
+import formatChatHistoryAsString from '../utils/formatHistory';
+import { BaseMessage } from '@langchain/core/messages';
+import { BaseChatModel } from '@langchain/core/language_models/chat_models';
+import { ChatOpenAI } from '@langchain/openai';
+
+const suggestionGeneratorPrompt = `
+You are an AI suggestion generator for an AI powered search engine. You will be given a conversation below. You need to generate 4-5 suggestions based on the conversation. The suggestion should be relevant to the conversation that can be used by the user to ask the chat model for more information.
+You need to make sure the suggestions are relevant to the conversation and are helpful to the user. Keep a note that the user might use these suggestions to ask a chat model for more information. 
+Make sure the suggestions are medium in length and are informative and relevant to the conversation.
+
+Provide these suggestions separated by newlines between the XML tags <suggestions> and </suggestions>. For example:
+
+<suggestions>
+Tell me more about SpaceX and their recent projects
+What is the latest news on SpaceX?
+Who is the CEO of SpaceX?
+</suggestions>
+
+Conversation:
+{chat_history}
+`;
+
+type SuggestionGeneratorInput = {
+  chat_history: BaseMessage[];
+};
+
+const outputParser = new ListLineOutputParser({
+  key: 'suggestions',
+});
+
+const createSuggestionGeneratorChain = (llm: BaseChatModel) => {
+  return RunnableSequence.from([
+    RunnableMap.from({
+      chat_history: (input: SuggestionGeneratorInput) =>
+        formatChatHistoryAsString(input.chat_history),
+    }),
+    PromptTemplate.fromTemplate(suggestionGeneratorPrompt),
+    llm,
+    outputParser,
+  ]);
+};
+
+const generateSuggestions = (
+  input: SuggestionGeneratorInput,
+  llm: BaseChatModel,
+) => {
+  (llm as unknown as ChatOpenAI).temperature = 0;
+  const suggestionGeneratorChain = createSuggestionGeneratorChain(llm);
+  return suggestionGeneratorChain.invoke(input);
+};
+
+export default generateSuggestions;

src/agents/webSearchAgent.ts

@@ -19,20 +19,48 @@ import formatChatHistoryAsString from '../utils/formatHistory';
 import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 import logger from '../utils/logger';
+import LineListOutputParser from '../lib/outputParsers/listLineOutputParser';
+import { getDocumentsFromLinks } from '../lib/linkDocument';
+import LineOutputParser from '../lib/outputParsers/lineOutputParser';
+import { IterableReadableStream } from '@langchain/core/utils/stream';
 
 const basicSearchRetrieverPrompt = `
 You will be given a conversation below and a follow up question. You need to rephrase the follow-up question if needed so it is a standalone question that can be used by the LLM to search the web for information.
 If it is a writing task or a simple hi, hello rather than a question, you need to return \`not_needed\` as the response.
+If the question contains some links and asks to answer from those links or even if they don't you need to return the links inside 'links' XML block and the question inside 'question' XML block. If there are no links then you need to return the question without any XML block.
+If the user asks to summarize the content from some links you need to return \`Summarize\` as the question inside the 'question' XML block and the links inside the 'links' XML block.
 
 Example:
 1. Follow up question: What is the capital of France?
-Rephrased: Capital of france
+Rephrased question: \`Capital of france\`
 
 2. Follow up question: What is the population of New York City?
-Rephrased: Population of New York City
+Rephrased question: \`Population of New York City\`
 
 3. Follow up question: What is Docker?
-Rephrased: What is Docker
+Rephrased question: \`What is Docker\`
+
+4. Follow up question: Can you tell me what is X from https://example.com
+Rephrased question: \`
+<question>
+Can you tell me what is X?
+</question>
+
+<links>
+https://example.com
+</links>
+\`
+
+5. Follow up question: Summarize the content from https://example.com
+Rephrased question: \`
+<question>
+Summarize
+</question>
+
+<links>
+https://example.com
+</links>
+\`
 
 Conversation:
 {chat_history}
@@ -42,31 +70,33 @@ Rephrased question:
 `;
 
 const basicWebSearchResponsePrompt = `
-    You are Perplexica, an AI model who is expert at searching the web and answering user's queries.
+    You are Perplexica, an AI model who is expert at searching the web and answering user's queries. You are also an expert at summarizing web pages or documents and searching for content in them.
 
-    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containg a brief description of the content of that page).
+    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containing a brief description of the content of that page).
     You must use this context to answer the user's query in the best way possible. Use an unbaised and journalistic tone in your response. Do not repeat the text.
     You must not tell the user to open any link or visit any website to get the answer. You must provide the answer in the response itself. If the user asks for links you can provide them.
+    If the query contains some links and the user asks to answer from those links you will be provided the entire content of the page inside the \`context\` XML block. You can then use this content to answer the user's query.
+    If the user asks to summarize content from some links, you will be provided the entire content of the page inside the \`context\` XML block. You can then use this content to summarize the text. The content provided inside the \`context\` block will be already summarized by another model so you just need to use that content to answer the user's query.
     Your responses should be medium to long in length be informative and relevant to the user's query. You can use markdowns to format your response. You should use bullet points to list the information. Make sure the answer is not short and is informative.
     You have to cite the answer using [number] notation. You must cite the sentences with their relevent context number. You must cite each and every part of the answer so the user can know where the information is coming from.
     Place these citations at the end of that particular sentence. You can cite the same sentence multiple times if it is relevant to the user's query like [number1][number2].
     However you do not need to cite it using the same number. You can use different numbers to cite the same sentence multiple times. The number refers to the number of the search result (passed in the context) used to generate that part of the answer.
 
-    Aything inside the following \`context\` HTML block provided below is for your knowledge returned by the search engine and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
-    talk about the context in your response. 
+    Anything inside the following \`context\` HTML block provided below is for your knowledge returned by the search engine and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to
+    talk about the context in your response.
 
     <context>
     {context}
     </context>
 
-    If you think there's nothing relevant in the search results, you can say that 'Hmm, sorry I could not find any relevant information on this topic. Would you like me to search again or ask something else?'.
+    If you think there's nothing relevant in the search results, you can say that 'Hmm, sorry I could not find any relevant information on this topic. Would you like me to search again or ask something else?'. You do not need to do this for summarization tasks.
     Anything between the \`context\` is retrieved from a search engine and is not a part of the conversation with the user. Today's date is ${new Date().toISOString()}
 `;
 
 const strParser = new StringOutputParser();
 
 const handleStream = async (
-  stream: AsyncGenerator<StreamEvent, any, unknown>,
+  stream: IterableReadableStream<StreamEvent>,
   emitter: eventEmitter,
 ) => {
   for await (const event of stream) {
@@ -112,23 +142,109 @@ const createBasicWebSearchRetrieverChain = (llm: BaseChatModel) => {
         return { query: '', docs: [] };
       }
 
-      const res = await searchSearxng(input, {
-        language: 'en',
+      const linksOutputParser = new LineListOutputParser({
+        key: 'links',
       });
 
-      const documents = res.results.map(
-        (result) =>
-          new Document({
-            pageContent: result.content,
-            metadata: {
-              title: result.title,
-              url: result.url,
-              ...(result.img_src && { img_src: result.img_src }),
-            },
-          }),
-      );
+      const questionOutputParser = new LineOutputParser({
+        key: 'question',
+      });
 
-      return { query: input, docs: documents };
+      const links = await linksOutputParser.parse(input);
+      let question = await questionOutputParser.parse(input);
+
+      if (links.length > 0) {
+        if (question.length === 0) {
+          question = 'Summarize';
+        }
+
+        let docs = [];
+
+        const linkDocs = await getDocumentsFromLinks({ links });
+
+        const docGroups: Document[] = [];
+
+        linkDocs.map((doc) => {
+          const URLDocExists = docGroups.find(
+            (d) =>
+              d.metadata.url === doc.metadata.url && d.metadata.totalDocs < 10,
+          );
+
+          if (!URLDocExists) {
+            docGroups.push({
+              ...doc,
+              metadata: {
+                ...doc.metadata,
+                totalDocs: 1,
+              },
+            });
+          }
+
+          const docIndex = docGroups.findIndex(
+            (d) =>
+              d.metadata.url === doc.metadata.url && d.metadata.totalDocs < 10,
+          );
+
+          if (docIndex !== -1) {
+            docGroups[docIndex].pageContent =
+              docGroups[docIndex].pageContent + `\n\n` + doc.pageContent;
+            docGroups[docIndex].metadata.totalDocs += 1;
+          }
+        });
+
+        await Promise.all(
+          docGroups.map(async (doc) => {
+            const res = await llm.invoke(`
+            You are a text summarizer. You need to summarize the text provided inside the \`text\` XML block. 
+            You need to summarize the text into 1 or 2 sentences capturing the main idea of the text.
+            You need to make sure that you don't miss any point while summarizing the text.
+            You will also be given a \`query\` XML block which will contain the query of the user. Try to answer the query in the summary from the text provided.
+            If the query says Summarize then you just need to summarize the text without answering the query.
+            Only return the summarized text without any other messages, text or XML block.
+
+            <query>
+            ${question}
+            </query>
+
+            <text>
+            ${doc.pageContent}
+            </text>
+
+            Make sure to answer the query in the summary.
+          `);
+
+            const document = new Document({
+              pageContent: res.content as string,
+              metadata: {
+                title: doc.metadata.title,
+                url: doc.metadata.url,
+              },
+            });
+
+            docs.push(document);
+          }),
+        );
+
+        return { query: question, docs: docs };
+      } else {
+        const res = await searchSearxng(input, {
+          language: 'en',
+        });
+
+        const documents = res.results.map(
+          (result) =>
+            new Document({
+              pageContent: result.content,
+              metadata: {
+                title: result.title,
+                url: result.url,
+                ...(result.img_src && { img_src: result.img_src }),
+              },
+            }),
+        );
+
+        return { query: input, docs: documents };
+      }
     }),
   ]);
 };
@@ -156,6 +272,10 @@ const createBasicWebSearchAnsweringChain = (
       return docs;
     }
 
+    if (query === 'Summarize') {
+      return docs;
+    }
+
     const docsWithContent = docs.filter(
       (doc) => doc.pageContent && doc.pageContent.length > 0,
     );
@@ -175,8 +295,8 @@ const createBasicWebSearchAnsweringChain = (
     });
 
     const sortedDocs = similarity
-      .sort((a, b) => b.similarity - a.similarity)
       .filter((sim) => sim.similarity > 0.5)
+      .sort((a, b) => b.similarity - a.similarity)
       .slice(0, 15)
       .map((sim) => docsWithContent[sim.index]);
 

src/agents/wolframAlphaSearchAgent.ts

@@ -18,6 +18,7 @@ import type { Embeddings } from '@langchain/core/embeddings';
 import formatChatHistoryAsString from '../utils/formatHistory';
 import eventEmitter from 'events';
 import logger from '../utils/logger';
+import { IterableReadableStream } from '@langchain/core/utils/stream';
 
 const basicWolframAlphaSearchRetrieverPrompt = `
 You will be given a conversation below and a follow up question. You need to rephrase the follow-up question if needed so it is a standalone question that can be used by the LLM to search the web for information.
@@ -43,7 +44,7 @@ Rephrased question:
 const basicWolframAlphaSearchResponsePrompt = `
     You are Perplexica, an AI model who is expert at searching the web and answering user's queries. You are set on focus mode 'Wolfram Alpha', this means you will be searching for information on the web using Wolfram Alpha. It is a computational knowledge engine that can answer factual queries and perform computations.
 
-    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containg a brief description of the content of that page).
+    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containing a brief description of the content of that page).
     You must use this context to answer the user's query in the best way possible. Use an unbaised and journalistic tone in your response. Do not repeat the text.
     You must not tell the user to open any link or visit any website to get the answer. You must provide the answer in the response itself. If the user asks for links you can provide them.
     Your responses should be medium to long in length be informative and relevant to the user's query. You can use markdowns to format your response. You should use bullet points to list the information. Make sure the answer is not short and is informative.
@@ -51,7 +52,7 @@ const basicWolframAlphaSearchResponsePrompt = `
     Place these citations at the end of that particular sentence. You can cite the same sentence multiple times if it is relevant to the user's query like [number1][number2].
     However you do not need to cite it using the same number. You can use different numbers to cite the same sentence multiple times. The number refers to the number of the search result (passed in the context) used to generate that part of the answer.
 
-    Aything inside the following \`context\` HTML block provided below is for your knowledge returned by Wolfram Alpha and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
+    Anything inside the following \`context\` HTML block provided below is for your knowledge returned by Wolfram Alpha and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
     talk about the context in your response. 
 
     <context>
@@ -65,7 +66,7 @@ const basicWolframAlphaSearchResponsePrompt = `
 const strParser = new StringOutputParser();
 
 const handleStream = async (
-  stream: AsyncGenerator<StreamEvent, any, unknown>,
+  stream: IterableReadableStream<StreamEvent>,
   emitter: eventEmitter,
 ) => {
   for await (const event of stream) {

src/agents/writingAssistant.ts

@@ -10,6 +10,7 @@ import eventEmitter from 'events';
 import type { BaseChatModel } from '@langchain/core/language_models/chat_models';
 import type { Embeddings } from '@langchain/core/embeddings';
 import logger from '../utils/logger';
+import { IterableReadableStream } from '@langchain/core/utils/stream';
 
 const writingAssistantPrompt = `
 You are Perplexica, an AI model who is expert at searching the web and answering user's queries. You are currently set on focus mode 'Writing Assistant', this means you will be helping the user write a response to a given query. 
@@ -19,7 +20,7 @@ Since you are a writing assistant, you would not perform web searches. If you th
 const strParser = new StringOutputParser();
 
 const handleStream = async (
-  stream: AsyncGenerator<StreamEvent, any, unknown>,
+  stream: IterableReadableStream<StreamEvent>,
   emitter: eventEmitter,
 ) => {
   for await (const event of stream) {

src/agents/youtubeSearchAgent.ts

@@ -19,6 +19,7 @@ import formatChatHistoryAsString from '../utils/formatHistory';
 import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 import logger from '../utils/logger';
+import { IterableReadableStream } from '@langchain/core/utils/stream';
 
 const basicYoutubeSearchRetrieverPrompt = `
 You will be given a conversation below and a follow up question. You need to rephrase the follow-up question if needed so it is a standalone question that can be used by the LLM to search the web for information.
@@ -44,7 +45,7 @@ Rephrased question:
 const basicYoutubeSearchResponsePrompt = `
     You are Perplexica, an AI model who is expert at searching the web and answering user's queries. You are set on focus mode 'Youtube', this means you will be searching for videos on the web using Youtube and providing information based on the video's transcript.
 
-    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containg a brief description of the content of that page).
+    Generate a response that is informative and relevant to the user's query based on provided context (the context consits of search results containing a brief description of the content of that page).
     You must use this context to answer the user's query in the best way possible. Use an unbaised and journalistic tone in your response. Do not repeat the text.
     You must not tell the user to open any link or visit any website to get the answer. You must provide the answer in the response itself. If the user asks for links you can provide them.
     Your responses should be medium to long in length be informative and relevant to the user's query. You can use markdowns to format your response. You should use bullet points to list the information. Make sure the answer is not short and is informative.
@@ -52,8 +53,8 @@ const basicYoutubeSearchResponsePrompt = `
     Place these citations at the end of that particular sentence. You can cite the same sentence multiple times if it is relevant to the user's query like [number1][number2].
     However you do not need to cite it using the same number. You can use different numbers to cite the same sentence multiple times. The number refers to the number of the search result (passed in the context) used to generate that part of the answer.
 
-    Aything inside the following \`context\` HTML block provided below is for your knowledge returned by Youtube and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to 
-    talk about the context in your response. 
+    Anything inside the following \`context\` HTML block provided below is for your knowledge returned by Youtube and is not shared by the user. You have to answer question on the basis of it and cite the relevant information from it but you do not have to
+    talk about the context in your response.
 
     <context>
     {context}
@@ -66,7 +67,7 @@ const basicYoutubeSearchResponsePrompt = `
 const strParser = new StringOutputParser();
 
 const handleStream = async (
-  stream: AsyncGenerator<StreamEvent, any, unknown>,
+  stream: IterableReadableStream<StreamEvent>,
   emitter: eventEmitter,
 ) => {
   for await (const event of stream) {
@@ -177,9 +178,9 @@ const createBasicYoutubeSearchAnsweringChain = (
     });
 
     const sortedDocs = similarity
+      .filter((sim) => sim.similarity > 0.3)
       .sort((a, b) => b.similarity - a.similarity)
       .slice(0, 15)
-      .filter((sim) => sim.similarity > 0.3)
       .map((sim) => docsWithContent[sim.index]);
 
     return sortedDocs;

src/app.ts

@@ -28,3 +28,11 @@ server.listen(port, () => {
 });
 
 startWebSocketServer(server);
+
+process.on('uncaughtException', (err, origin) => {
+  logger.error(`Uncaught Exception at ${origin}: ${err}`);
+});
+
+process.on('unhandledRejection', (reason, promise) => {
+  logger.error(`Unhandled Rejection at: ${promise}, reason: ${reason}`);
+});

src/config.ts

@@ -12,6 +12,7 @@ interface Config {
   API_KEYS: {
     OPENAI: string;
     GROQ: string;
+    ANTHROPIC: string;
   };
   API_ENDPOINTS: {
     SEARXNG: string;
@@ -37,6 +38,8 @@ export const getOpenaiApiKey = () => loadConfig().API_KEYS.OPENAI;
 
 export const getGroqApiKey = () => loadConfig().API_KEYS.GROQ;
 
+export const getAnthropicApiKey = () => loadConfig().API_KEYS.ANTHROPIC;
+
 export const getSearxngApiEndpoint = () => loadConfig().API_ENDPOINTS.SEARXNG;
 
 export const getOllamaApiEndpoint = () => loadConfig().API_ENDPOINTS.OLLAMA;

src/db/index.ts

@@ -0,0 +1,10 @@
+import { drizzle } from 'drizzle-orm/better-sqlite3';
+import Database from 'better-sqlite3';
+import * as schema from './schema';
+
+const sqlite = new Database('data/db.sqlite');
+const db = drizzle(sqlite, {
+  schema: schema,
+});
+
+export default db;

src/db/schema.ts

@@ -0,0 +1,19 @@
+import { text, integer, sqliteTable } from 'drizzle-orm/sqlite-core';
+
+export const messages = sqliteTable('messages', {
+  id: integer('id').primaryKey(),
+  content: text('content').notNull(),
+  chatId: text('chatId').notNull(),
+  messageId: text('messageId').notNull(),
+  role: text('type', { enum: ['assistant', 'user'] }),
+  metadata: text('metadata', {
+    mode: 'json',
+  }),
+});
+
+export const chats = sqliteTable('chats', {
+  id: text('id').primaryKey(),
+  title: text('title').notNull(),
+  createdAt: text('createdAt').notNull(),
+  focusMode: text('focusMode').notNull(),
+});

src/lib/huggingfaceTransformer.ts

@@ -0,0 +1,82 @@
+import { Embeddings, type EmbeddingsParams } from '@langchain/core/embeddings';
+import { chunkArray } from '@langchain/core/utils/chunk_array';
+
+export interface HuggingFaceTransformersEmbeddingsParams
+  extends EmbeddingsParams {
+  modelName: string;
+
+  model: string;
+
+  timeout?: number;
+
+  batchSize?: number;
+
+  stripNewLines?: boolean;
+}
+
+export class HuggingFaceTransformersEmbeddings
+  extends Embeddings
+  implements HuggingFaceTransformersEmbeddingsParams
+{
+  modelName = 'Xenova/all-MiniLM-L6-v2';
+
+  model = 'Xenova/all-MiniLM-L6-v2';
+
+  batchSize = 512;
+
+  stripNewLines = true;
+
+  timeout?: number;
+
+  private pipelinePromise: Promise<any>;
+
+  constructor(fields?: Partial<HuggingFaceTransformersEmbeddingsParams>) {
+    super(fields ?? {});
+
+    this.modelName = fields?.model ?? fields?.modelName ?? this.model;
+    this.model = this.modelName;
+    this.stripNewLines = fields?.stripNewLines ?? this.stripNewLines;
+    this.timeout = fields?.timeout;
+  }
+
+  async embedDocuments(texts: string[]): Promise<number[][]> {
+    const batches = chunkArray(
+      this.stripNewLines ? texts.map((t) => t.replace(/\n/g, ' ')) : texts,
+      this.batchSize,
+    );
+
+    const batchRequests = batches.map((batch) => this.runEmbedding(batch));
+    const batchResponses = await Promise.all(batchRequests);
+    const embeddings: number[][] = [];
+
+    for (let i = 0; i < batchResponses.length; i += 1) {
+      const batchResponse = batchResponses[i];
+      for (let j = 0; j < batchResponse.length; j += 1) {
+        embeddings.push(batchResponse[j]);
+      }
+    }
+
+    return embeddings;
+  }
+
+  async embedQuery(text: string): Promise<number[]> {
+    const data = await this.runEmbedding([
+      this.stripNewLines ? text.replace(/\n/g, ' ') : text,
+    ]);
+    return data[0];
+  }
+
+  private async runEmbedding(texts: string[]) {
+    const { pipeline } = await import('@xenova/transformers');
+
+    const pipe = await (this.pipelinePromise ??= pipeline(
+      'feature-extraction',
+      this.model,
+    ));
+
+    return this.caller.call(async () => {
+      const output = await pipe(texts, { pooling: 'mean', normalize: true });
+      return output.tolist();
+    });
+  }
+}

src/lib/linkDocument.ts

@@ -0,0 +1,83 @@
+import axios from 'axios';
+import { htmlToText } from 'html-to-text';
+import { RecursiveCharacterTextSplitter } from 'langchain/text_splitter';
+import { Document } from '@langchain/core/documents';
+import pdfParse from 'pdf-parse';
+
+export const getDocumentsFromLinks = async ({ links }: { links: string[] }) => {
+  const splitter = new RecursiveCharacterTextSplitter();
+
+  let docs: Document[] = [];
+
+  await Promise.all(
+    links.map(async (link) => {
+      link =
+        link.startsWith('http://') || link.startsWith('https://')
+          ? link
+          : `https://${link}`;
+
+      const res = await axios.get(link, {
+        responseType: 'arraybuffer',
+      });
+
+      const isPdf = res.headers['content-type'] === 'application/pdf';
+
+      if (isPdf) {
+        const pdfText = await pdfParse(res.data);
+        const parsedText = pdfText.text
+          .replace(/(\r\n|\n|\r)/gm, ' ')
+          .replace(/\s+/g, ' ')
+          .trim();
+
+        const splittedText = await splitter.splitText(parsedText);
+        const title = 'PDF Document';
+
+        const linkDocs = splittedText.map((text) => {
+          return new Document({
+            pageContent: text,
+            metadata: {
+              title: title,
+              url: link,
+            },
+          });
+        });
+
+        docs.push(...linkDocs);
+        return;
+      }
+
+      const parsedText = htmlToText(res.data.toString('utf8'), {
+        selectors: [
+          {
+            selector: 'a',
+            options: {
+              ignoreHref: true,
+            },
+          },
+        ],
+      })
+        .replace(/(\r\n|\n|\r)/gm, ' ')
+        .replace(/\s+/g, ' ')
+        .trim();
+
+      const splittedText = await splitter.splitText(parsedText);
+      const title = res.data
+        .toString('utf8')
+        .match(/<title>(.*?)<\/title>/)?.[1];
+
+      const linkDocs = splittedText.map((text) => {
+        return new Document({
+          pageContent: text,
+          metadata: {
+            title: title || link,
+            url: link,
+          },
+        });
+      });
+
+      docs.push(...linkDocs);
+    }),
+  );
+
+  return docs;
+};

src/lib/outputParsers/lineOutputParser.ts

@@ -0,0 +1,46 @@
+import { BaseOutputParser } from '@langchain/core/output_parsers';
+
+interface LineOutputParserArgs {
+  key?: string;
+}
+
+class LineOutputParser extends BaseOutputParser<string> {
+  private key = 'questions';
+
+  constructor(args?: LineOutputParserArgs) {
+    super();
+    this.key = args.key ?? this.key;
+  }
+
+  static lc_name() {
+    return 'LineOutputParser';
+  }
+
+  lc_namespace = ['langchain', 'output_parsers', 'line_output_parser'];
+
+  async parse(text: string): Promise<string> {
+    const regex = /^(\s*(-|\*|\d+\.\s|\d+\)\s|\u2022)\s*)+/;
+    const startKeyIndex = text.indexOf(`<${this.key}>`);
+    const endKeyIndex = text.indexOf(`</${this.key}>`);
+
+    if (startKeyIndex === -1 || endKeyIndex === -1) {
+      return '';
+    }
+
+    const questionsStartIndex =
+      startKeyIndex === -1 ? 0 : startKeyIndex + `<${this.key}>`.length;
+    const questionsEndIndex = endKeyIndex === -1 ? text.length : endKeyIndex;
+    const line = text
+      .slice(questionsStartIndex, questionsEndIndex)
+      .trim()
+      .replace(regex, '');
+
+    return line;
+  }
+
+  getFormatInstructions(): string {
+    throw new Error('Not implemented.');
+  }
+}
+
+export default LineOutputParser;

src/lib/outputParsers/listLineOutputParser.ts

@@ -0,0 +1,48 @@
+import { BaseOutputParser } from '@langchain/core/output_parsers';
+
+interface LineListOutputParserArgs {
+  key?: string;
+}
+
+class LineListOutputParser extends BaseOutputParser<string[]> {
+  private key = 'questions';
+
+  constructor(args?: LineListOutputParserArgs) {
+    super();
+    this.key = args.key ?? this.key;
+  }
+
+  static lc_name() {
+    return 'LineListOutputParser';
+  }
+
+  lc_namespace = ['langchain', 'output_parsers', 'line_list_output_parser'];
+
+  async parse(text: string): Promise<string[]> {
+    const regex = /^(\s*(-|\*|\d+\.\s|\d+\)\s|\u2022)\s*)+/;
+    const startKeyIndex = text.indexOf(`<${this.key}>`);
+    const endKeyIndex = text.indexOf(`</${this.key}>`);
+
+    if (startKeyIndex === -1 || endKeyIndex === -1) {
+      return [];
+    }
+
+    const questionsStartIndex =
+      startKeyIndex === -1 ? 0 : startKeyIndex + `<${this.key}>`.length;
+    const questionsEndIndex = endKeyIndex === -1 ? text.length : endKeyIndex;
+    const lines = text
+      .slice(questionsStartIndex, questionsEndIndex)
+      .trim()
+      .split('\n')
+      .filter((line) => line.trim() !== '')
+      .map((line) => line.replace(regex, ''));
+
+    return lines;
+  }
+
+  getFormatInstructions(): string {
+    throw new Error('Not implemented.');
+  }
+}
+
+export default LineListOutputParser;

src/lib/providers.ts

@@ -1,165 +0,0 @@
-import { ChatOpenAI, OpenAIEmbeddings } from '@langchain/openai';
-import { ChatOllama } from '@langchain/community/chat_models/ollama';
-import { OllamaEmbeddings } from '@langchain/community/embeddings/ollama';
-import {
-  getGroqApiKey,
-  getOllamaApiEndpoint,
-  getOpenaiApiKey,
-} from '../config';
-import logger from '../utils/logger';
-
-export const getAvailableChatModelProviders = async () => {
-  const openAIApiKey = getOpenaiApiKey();
-  const groqApiKey = getGroqApiKey();
-  const ollamaEndpoint = getOllamaApiEndpoint();
-
-  const models = {};
-
-  if (openAIApiKey) {
-    try {
-      models['openai'] = {
-        'GPT-3.5 turbo': new ChatOpenAI({
-          openAIApiKey,
-          modelName: 'gpt-3.5-turbo',
-          temperature: 0.7,
-        }),
-        'GPT-4': new ChatOpenAI({
-          openAIApiKey,
-          modelName: 'gpt-4',
-          temperature: 0.7,
-        }),
-        'GPT-4 turbo': new ChatOpenAI({
-          openAIApiKey,
-          modelName: 'gpt-4-turbo',
-          temperature: 0.7,
-        }),
-      };
-    } catch (err) {
-      logger.error(`Error loading OpenAI models: ${err}`);
-    }
-  }
-
-  if (groqApiKey) {
-    try {
-      models['groq'] = {
-        'LLaMA3 8b': new ChatOpenAI(
-          {
-            openAIApiKey: groqApiKey,
-            modelName: 'llama3-8b-8192',
-            temperature: 0.7,
-          },
-          {
-            baseURL: 'https://api.groq.com/openai/v1',
-          },
-        ),
-        'LLaMA3 70b': new ChatOpenAI(
-          {
-            openAIApiKey: groqApiKey,
-            modelName: 'llama3-70b-8192',
-            temperature: 0.7,
-          },
-          {
-            baseURL: 'https://api.groq.com/openai/v1',
-          },
-        ),
-        'Mixtral 8x7b': new ChatOpenAI(
-          {
-            openAIApiKey: groqApiKey,
-            modelName: 'mixtral-8x7b-32768',
-            temperature: 0.7,
-          },
-          {
-            baseURL: 'https://api.groq.com/openai/v1',
-          },
-        ),
-        'Gemma 7b': new ChatOpenAI(
-          {
-            openAIApiKey: groqApiKey,
-            modelName: 'gemma-7b-it',
-            temperature: 0.7,
-          },
-          {
-            baseURL: 'https://api.groq.com/openai/v1',
-          },
-        ),
-      };
-    } catch (err) {
-      logger.error(`Error loading Groq models: ${err}`);
-    }
-  }
-
-  if (ollamaEndpoint) {
-    try {
-      const response = await fetch(`${ollamaEndpoint}/api/tags`, {
-        headers: {
-          'Content-Type': 'application/json',
-        },
-      });
-
-      const { models: ollamaModels } = (await response.json()) as any;
-
-      models['ollama'] = ollamaModels.reduce((acc, model) => {
-        acc[model.model] = new ChatOllama({
-          baseUrl: ollamaEndpoint,
-          model: model.model,
-          temperature: 0.7,
-        });
-        return acc;
-      }, {});
-    } catch (err) {
-      logger.error(`Error loading Ollama models: ${err}`);
-    }
-  }
-
-  models['custom_openai'] = {};
-
-  return models;
-};
-
-export const getAvailableEmbeddingModelProviders = async () => {
-  const openAIApiKey = getOpenaiApiKey();
-  const ollamaEndpoint = getOllamaApiEndpoint();
-
-  const models = {};
-
-  if (openAIApiKey) {
-    try {
-      models['openai'] = {
-        'Text embedding 3 small': new OpenAIEmbeddings({
-          openAIApiKey,
-          modelName: 'text-embedding-3-small',
-        }),
-        'Text embedding 3 large': new OpenAIEmbeddings({
-          openAIApiKey,
-          modelName: 'text-embedding-3-large',
-        }),
-      };
-    } catch (err) {
-      logger.error(`Error loading OpenAI embeddings: ${err}`);
-    }
-  }
-
-  if (ollamaEndpoint) {
-    try {
-      const response = await fetch(`${ollamaEndpoint}/api/tags`, {
-        headers: {
-          'Content-Type': 'application/json',
-        },
-      });
-
-      const { models: ollamaModels } = (await response.json()) as any;
-
-      models['ollama'] = ollamaModels.reduce((acc, model) => {
-        acc[model.model] = new OllamaEmbeddings({
-          baseUrl: ollamaEndpoint,
-          model: model.model,
-        });
-        return acc;
-      }, {});
-    } catch (err) {
-      logger.error(`Error loading Ollama embeddings: ${err}`);
-    }
-  }
-
-  return models;
-};

src/lib/providers/anthropic.ts

@@ -0,0 +1,39 @@
+import { ChatAnthropic } from '@langchain/anthropic';
+import { getAnthropicApiKey } from '../../config';
+import logger from '../../utils/logger';
+
+export const loadAnthropicChatModels = async () => {
+  const anthropicApiKey = getAnthropicApiKey();
+
+  if (!anthropicApiKey) return {};
+
+  try {
+    const chatModels = {
+      'Claude 3.5 Sonnet': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-5-sonnet-20240620',
+      }),
+      'Claude 3 Opus': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-opus-20240229',
+      }),
+      'Claude 3 Sonnet': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-sonnet-20240229',
+      }),
+      'Claude 3 Haiku': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-haiku-20240307',
+      }),
+    };
+
+    return chatModels;
+  } catch (err) {
+    logger.error(`Error loading Anthropic models: ${err}`);
+    return {};
+  }
+};

src/lib/providers/groq.ts

@@ -0,0 +1,89 @@
+import { ChatOpenAI } from '@langchain/openai';
+import { getGroqApiKey } from '../../config';
+import logger from '../../utils/logger';
+
+export const loadGroqChatModels = async () => {
+  const groqApiKey = getGroqApiKey();
+
+  if (!groqApiKey) return {};
+
+  try {
+    const chatModels = {
+      'Llama 3.1 70B': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'llama-3.1-70b-versatile',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+      'Llama 3.1 8B': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'llama-3.1-8b-instant',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+      'LLaMA3 8b': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'llama3-8b-8192',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+      'LLaMA3 70b': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'llama3-70b-8192',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+      'Mixtral 8x7b': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'mixtral-8x7b-32768',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+      'Gemma 7b': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'gemma-7b-it',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+      'Gemma2 9b': new ChatOpenAI(
+        {
+          openAIApiKey: groqApiKey,
+          modelName: 'gemma2-9b-it',
+          temperature: 0.7,
+        },
+        {
+          baseURL: 'https://api.groq.com/openai/v1',
+        },
+      ),
+    };
+
+    return chatModels;
+  } catch (err) {
+    logger.error(`Error loading Groq models: ${err}`);
+    return {};
+  }
+};

src/lib/providers/index.ts

@@ -0,0 +1,46 @@
+import { loadGroqChatModels } from './groq';
+import { loadOllamaChatModels, loadOllamaEmbeddingsModels } from './ollama';
+import { loadOpenAIChatModels, loadOpenAIEmbeddingsModels } from './openai';
+import { loadAnthropicChatModels } from './anthropic';
+import { loadTransformersEmbeddingsModels } from './transformers';
+
+const chatModelProviders = {
+  openai: loadOpenAIChatModels,
+  groq: loadGroqChatModels,
+  ollama: loadOllamaChatModels,
+  anthropic: loadAnthropicChatModels,
+};
+
+const embeddingModelProviders = {
+  openai: loadOpenAIEmbeddingsModels,
+  local: loadTransformersEmbeddingsModels,
+  ollama: loadOllamaEmbeddingsModels,
+};
+
+export const getAvailableChatModelProviders = async () => {
+  const models = {};
+
+  for (const provider in chatModelProviders) {
+    const providerModels = await chatModelProviders[provider]();
+    if (Object.keys(providerModels).length > 0) {
+      models[provider] = providerModels;
+    }
+  }
+
+  models['custom_openai'] = {};
+
+  return models;
+};
+
+export const getAvailableEmbeddingModelProviders = async () => {
+  const models = {};
+
+  for (const provider in embeddingModelProviders) {
+    const providerModels = await embeddingModelProviders[provider]();
+    if (Object.keys(providerModels).length > 0) {
+      models[provider] = providerModels;
+    }
+  }
+
+  return models;
+};

src/lib/providers/ollama.ts

@@ -0,0 +1,63 @@
+import { OllamaEmbeddings } from '@langchain/community/embeddings/ollama';
+import { getOllamaApiEndpoint } from '../../config';
+import logger from '../../utils/logger';
+import { ChatOllama } from '@langchain/community/chat_models/ollama';
+
+export const loadOllamaChatModels = async () => {
+  const ollamaEndpoint = getOllamaApiEndpoint();
+
+  if (!ollamaEndpoint) return {};
+
+  try {
+    const response = await fetch(`${ollamaEndpoint}/api/tags`, {
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    });
+
+    const { models: ollamaModels } = (await response.json()) as any;
+
+    const chatModels = ollamaModels.reduce((acc, model) => {
+      acc[model.model] = new ChatOllama({
+        baseUrl: ollamaEndpoint,
+        model: model.model,
+        temperature: 0.7,
+      });
+      return acc;
+    }, {});
+
+    return chatModels;
+  } catch (err) {
+    logger.error(`Error loading Ollama models: ${err}`);
+    return {};
+  }
+};
+
+export const loadOllamaEmbeddingsModels = async () => {
+  const ollamaEndpoint = getOllamaApiEndpoint();
+
+  if (!ollamaEndpoint) return {};
+
+  try {
+    const response = await fetch(`${ollamaEndpoint}/api/tags`, {
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    });
+
+    const { models: ollamaModels } = (await response.json()) as any;
+
+    const embeddingsModels = ollamaModels.reduce((acc, model) => {
+      acc[model.model] = new OllamaEmbeddings({
+        baseUrl: ollamaEndpoint,
+        model: model.model,
+      });
+      return acc;
+    }, {});
+
+    return embeddingsModels;
+  } catch (err) {
+    logger.error(`Error loading Ollama embeddings model: ${err}`);
+    return {};
+  }
+};

src/lib/providers/openai.ts

@@ -0,0 +1,68 @@
+import { ChatOpenAI, OpenAIEmbeddings } from '@langchain/openai';
+import { getOpenaiApiKey } from '../../config';
+import logger from '../../utils/logger';
+
+export const loadOpenAIChatModels = async () => {
+  const openAIApiKey = getOpenaiApiKey();
+
+  if (!openAIApiKey) return {};
+
+  try {
+    const chatModels = {
+      'GPT-3.5 turbo': new ChatOpenAI({
+        openAIApiKey,
+        modelName: 'gpt-3.5-turbo',
+        temperature: 0.7,
+      }),
+      'GPT-4': new ChatOpenAI({
+        openAIApiKey,
+        modelName: 'gpt-4',
+        temperature: 0.7,
+      }),
+      'GPT-4 turbo': new ChatOpenAI({
+        openAIApiKey,
+        modelName: 'gpt-4-turbo',
+        temperature: 0.7,
+      }),
+      'GPT-4 omni': new ChatOpenAI({
+        openAIApiKey,
+        modelName: 'gpt-4o',
+        temperature: 0.7,
+      }),
+      'GPT-4 omni mini': new ChatOpenAI({
+        openAIApiKey,
+        modelName: 'gpt-4o-mini',
+        temperature: 0.7,
+      }),
+    };
+
+    return chatModels;
+  } catch (err) {
+    logger.error(`Error loading OpenAI models: ${err}`);
+    return {};
+  }
+};
+
+export const loadOpenAIEmbeddingsModels = async () => {
+  const openAIApiKey = getOpenaiApiKey();
+
+  if (!openAIApiKey) return {};
+
+  try {
+    const embeddingModels = {
+      'Text embedding 3 small': new OpenAIEmbeddings({
+        openAIApiKey,
+        modelName: 'text-embedding-3-small',
+      }),
+      'Text embedding 3 large': new OpenAIEmbeddings({
+        openAIApiKey,
+        modelName: 'text-embedding-3-large',
+      }),
+    };
+
+    return embeddingModels;
+  } catch (err) {
+    logger.error(`Error loading OpenAI embeddings model: ${err}`);
+    return {};
+  }
+};

src/lib/providers/transformers.ts

@@ -0,0 +1,23 @@
+import logger from '../../utils/logger';
+import { HuggingFaceTransformersEmbeddings } from '../huggingfaceTransformer';
+
+export const loadTransformersEmbeddingsModels = async () => {
+  try {
+    const embeddingModels = {
+      'BGE Small': new HuggingFaceTransformersEmbeddings({
+        modelName: 'Xenova/bge-small-en-v1.5',
+      }),
+      'GTE Small': new HuggingFaceTransformersEmbeddings({
+        modelName: 'Xenova/gte-small',
+      }),
+      'Bert Multilingual': new HuggingFaceTransformersEmbeddings({
+        modelName: 'Xenova/bert-base-multilingual-uncased',
+      }),
+    };
+
+    return embeddingModels;
+  } catch (err) {
+    logger.error(`Error loading Transformers embeddings model: ${err}`);
+    return {};
+  }
+};

src/routes/chats.ts

@@ -0,0 +1,66 @@
+import express from 'express';
+import logger from '../utils/logger';
+import db from '../db/index';
+import { eq } from 'drizzle-orm';
+import { chats, messages } from '../db/schema';
+
+const router = express.Router();
+
+router.get('/', async (_, res) => {
+  try {
+    let chats = await db.query.chats.findMany();
+
+    chats = chats.reverse();
+
+    return res.status(200).json({ chats: chats });
+  } catch (err) {
+    res.status(500).json({ message: 'An error has occurred.' });
+    logger.error(`Error in getting chats: ${err.message}`);
+  }
+});
+
+router.get('/:id', async (req, res) => {
+  try {
+    const chatExists = await db.query.chats.findFirst({
+      where: eq(chats.id, req.params.id),
+    });
+
+    if (!chatExists) {
+      return res.status(404).json({ message: 'Chat not found' });
+    }
+
+    const chatMessages = await db.query.messages.findMany({
+      where: eq(messages.chatId, req.params.id),
+    });
+
+    return res.status(200).json({ chat: chatExists, messages: chatMessages });
+  } catch (err) {
+    res.status(500).json({ message: 'An error has occurred.' });
+    logger.error(`Error in getting chat: ${err.message}`);
+  }
+});
+
+router.delete(`/:id`, async (req, res) => {
+  try {
+    const chatExists = await db.query.chats.findFirst({
+      where: eq(chats.id, req.params.id),
+    });
+
+    if (!chatExists) {
+      return res.status(404).json({ message: 'Chat not found' });
+    }
+
+    await db.delete(chats).where(eq(chats.id, req.params.id)).execute();
+    await db
+      .delete(messages)
+      .where(eq(messages.chatId, req.params.id))
+      .execute();
+
+    return res.status(200).json({ message: 'Chat deleted successfully' });
+  } catch (err) {
+    res.status(500).json({ message: 'An error has occurred.' });
+    logger.error(`Error in deleting chat: ${err.message}`);
+  }
+});
+
+export default router;

src/routes/config.ts

@@ -6,6 +6,7 @@ import {
 import {
   getGroqApiKey,
   getOllamaApiEndpoint,
+  getAnthropicApiKey,
   getOpenaiApiKey,
   updateConfig,
 } from '../config';
@@ -37,6 +38,7 @@ router.get('/', async (_, res) => {
 
   config['openaiApiKey'] = getOpenaiApiKey();
   config['ollamaApiUrl'] = getOllamaApiEndpoint();
+  config['anthropicApiKey'] = getAnthropicApiKey();
   config['groqApiKey'] = getGroqApiKey();
 
   res.status(200).json(config);
@@ -49,6 +51,7 @@ router.post('/', async (req, res) => {
     API_KEYS: {
       OPENAI: config.openaiApiKey,
       GROQ: config.groqApiKey,
+      ANTHROPIC: config.anthropicApiKey,
     },
     API_ENDPOINTS: {
       OLLAMA: config.ollamaApiUrl,

src/routes/images.ts

@@ -20,8 +20,8 @@ router.post('/', async (req, res) => {
     });
 
     const chatModels = await getAvailableChatModelProviders();
-    const provider = chat_model_provider || Object.keys(chatModels)[0];
-    const chatModel = chat_model || Object.keys(chatModels[provider])[0];
+    const provider = chat_model_provider ?? Object.keys(chatModels)[0];
+    const chatModel = chat_model ?? Object.keys(chatModels[provider])[0];
 
     let llm: BaseChatModel | undefined;
 

src/routes/index.ts

@@ -3,6 +3,8 @@ import imagesRouter from './images';
 import videosRouter from './videos';
 import configRouter from './config';
 import modelsRouter from './models';
+import suggestionsRouter from './suggestions';
+import chatsRouter from './chats';
 
 const router = express.Router();
 
@@ -10,5 +12,7 @@ router.use('/images', imagesRouter);
 router.use('/videos', videosRouter);
 router.use('/config', configRouter);
 router.use('/models', modelsRouter);
+router.use('/suggestions', suggestionsRouter);
+router.use('/chats', chatsRouter);
 
 export default router;

src/routes/suggestions.ts

@@ -0,0 +1,46 @@
+import express from 'express';
+import generateSuggestions from '../agents/suggestionGeneratorAgent';
+import { BaseChatModel } from '@langchain/core/language_models/chat_models';
+import { getAvailableChatModelProviders } from '../lib/providers';
+import { HumanMessage, AIMessage } from '@langchain/core/messages';
+import logger from '../utils/logger';
+
+const router = express.Router();
+
+router.post('/', async (req, res) => {
+  try {
+    let { chat_history, chat_model, chat_model_provider } = req.body;
+
+    chat_history = chat_history.map((msg: any) => {
+      if (msg.role === 'user') {
+        return new HumanMessage(msg.content);
+      } else if (msg.role === 'assistant') {
+        return new AIMessage(msg.content);
+      }
+    });
+
+    const chatModels = await getAvailableChatModelProviders();
+    const provider = chat_model_provider ?? Object.keys(chatModels)[0];
+    const chatModel = chat_model ?? Object.keys(chatModels[provider])[0];
+
+    let llm: BaseChatModel | undefined;
+
+    if (chatModels[provider] && chatModels[provider][chatModel]) {
+      llm = chatModels[provider][chatModel] as BaseChatModel | undefined;
+    }
+
+    if (!llm) {
+      res.status(500).json({ message: 'Invalid LLM model selected' });
+      return;
+    }
+
+    const suggestions = await generateSuggestions({ chat_history }, llm);
+
+    res.status(200).json({ suggestions: suggestions });
+  } catch (err) {
+    res.status(500).json({ message: 'An error has occurred.' });
+    logger.error(`Error in generating suggestions: ${err.message}`);
+  }
+});
+
+export default router;

src/routes/videos.ts

@@ -20,8 +20,8 @@ router.post('/', async (req, res) => {
     });
 
     const chatModels = await getAvailableChatModelProviders();
-    const provider = chat_model_provider || Object.keys(chatModels)[0];
-    const chatModel = chat_model || Object.keys(chatModels[provider])[0];
+    const provider = chat_model_provider ?? Object.keys(chatModels)[0];
+    const chatModel = chat_model ?? Object.keys(chatModels[provider])[0];
 
     let llm: BaseChatModel | undefined;
 

src/websocket/connectionManager.ts

@@ -14,74 +14,87 @@ export const handleConnection = async (
   ws: WebSocket,
   request: IncomingMessage,
 ) => {
-  const searchParams = new URL(request.url, `http://${request.headers.host}`)
-    .searchParams;
+  try {
+    const searchParams = new URL(request.url, `http://${request.headers.host}`)
+      .searchParams;
 
-  const [chatModelProviders, embeddingModelProviders] = await Promise.all([
-    getAvailableChatModelProviders(),
-    getAvailableEmbeddingModelProviders(),
-  ]);
+    const [chatModelProviders, embeddingModelProviders] = await Promise.all([
+      getAvailableChatModelProviders(),
+      getAvailableEmbeddingModelProviders(),
+    ]);
 
-  const chatModelProvider =
-    searchParams.get('chatModelProvider') || Object.keys(chatModelProviders)[0];
-  const chatModel =
-    searchParams.get('chatModel') ||
-    Object.keys(chatModelProviders[chatModelProvider])[0];
+    const chatModelProvider =
+      searchParams.get('chatModelProvider') ||
+      Object.keys(chatModelProviders)[0];
+    const chatModel =
+      searchParams.get('chatModel') ||
+      Object.keys(chatModelProviders[chatModelProvider])[0];
 
-  const embeddingModelProvider =
-    searchParams.get('embeddingModelProvider') ||
-    Object.keys(embeddingModelProviders)[0];
-  const embeddingModel =
-    searchParams.get('embeddingModel') ||
-    Object.keys(embeddingModelProviders[embeddingModelProvider])[0];
+    const embeddingModelProvider =
+      searchParams.get('embeddingModelProvider') ||
+      Object.keys(embeddingModelProviders)[0];
+    const embeddingModel =
+      searchParams.get('embeddingModel') ||
+      Object.keys(embeddingModelProviders[embeddingModelProvider])[0];
 
-  let llm: BaseChatModel | undefined;
-  let embeddings: Embeddings | undefined;
+    let llm: BaseChatModel | undefined;
+    let embeddings: Embeddings | undefined;
 
-  if (
-    chatModelProviders[chatModelProvider] &&
-    chatModelProviders[chatModelProvider][chatModel] &&
-    chatModelProvider != 'custom_openai'
-  ) {
-    llm = chatModelProviders[chatModelProvider][chatModel] as
-      | BaseChatModel
-      | undefined;
-  } else if (chatModelProvider == 'custom_openai') {
-    llm = new ChatOpenAI({
-      modelName: chatModel,
-      openAIApiKey: searchParams.get('openAIApiKey'),
-      temperature: 0.7,
-      configuration: {
-        baseURL: searchParams.get('openAIBaseURL'),
-      },
-    });
-  }
+    if (
+      chatModelProviders[chatModelProvider] &&
+      chatModelProviders[chatModelProvider][chatModel] &&
+      chatModelProvider != 'custom_openai'
+    ) {
+      llm = chatModelProviders[chatModelProvider][chatModel] as unknown as
+        | BaseChatModel
+        | undefined;
+    } else if (chatModelProvider == 'custom_openai') {
+      llm = new ChatOpenAI({
+        modelName: chatModel,
+        openAIApiKey: searchParams.get('openAIApiKey'),
+        temperature: 0.7,
+        configuration: {
+          baseURL: searchParams.get('openAIBaseURL'),
+        },
+      }) as unknown as BaseChatModel;
+    }
 
-  if (
-    embeddingModelProviders[embeddingModelProvider] &&
-    embeddingModelProviders[embeddingModelProvider][embeddingModel]
-  ) {
-    embeddings = embeddingModelProviders[embeddingModelProvider][
-      embeddingModel
-    ] as Embeddings | undefined;
-  }
+    if (
+      embeddingModelProviders[embeddingModelProvider] &&
+      embeddingModelProviders[embeddingModelProvider][embeddingModel]
+    ) {
+      embeddings = embeddingModelProviders[embeddingModelProvider][
+        embeddingModel
+      ] as Embeddings | undefined;
+    }
 
-  if (!llm || !embeddings) {
+    if (!llm || !embeddings) {
+      ws.send(
+        JSON.stringify({
+          type: 'error',
+          data: 'Invalid LLM or embeddings model selected, please refresh the page and try again.',
+          key: 'INVALID_MODEL_SELECTED',
+        }),
+      );
+      ws.close();
+    }
+
+    ws.on(
+      'message',
+      async (message) =>
+        await handleMessage(message.toString(), ws, llm, embeddings),
+    );
+
+    ws.on('close', () => logger.debug('Connection closed'));
+  } catch (err) {
     ws.send(
       JSON.stringify({
         type: 'error',
-        data: 'Invalid LLM or embeddings model selected, please refresh the page and try again.',
-        key: 'INVALID_MODEL_SELECTED',
+        data: 'Internal server error.',
+        key: 'INTERNAL_SERVER_ERROR',
       }),
     );
     ws.close();
+    logger.error(err);
   }
-
-  ws.on(
-    'message',
-    async (message) =>
-      await handleMessage(message.toString(), ws, llm, embeddings),
-  );
-
-  ws.on('close', () => logger.debug('Connection closed'));
 };

src/websocket/messageHandler.ts

@@ -9,11 +9,21 @@ import handleRedditSearch from '../agents/redditSearchAgent';
 import type { BaseChatModel } from '@langchain/core/language_models/chat_models';
 import type { Embeddings } from '@langchain/core/embeddings';
 import logger from '../utils/logger';
+import db from '../db';
+import { chats, messages } from '../db/schema';
+import { eq } from 'drizzle-orm';
+import crypto from 'crypto';
 
 type Message = {
-  type: string;
+  messageId: string;
+  chatId: string;
   content: string;
+};
+
+type WSMessage = {
+  message: Message;
   copilot: boolean;
+  type: string;
   focusMode: string;
   history: Array<[string, string]>;
 };
@@ -30,8 +40,12 @@ const searchHandlers = {
 const handleEmitterEvents = (
   emitter: EventEmitter,
   ws: WebSocket,
-  id: string,
+  messageId: string,
+  chatId: string,
 ) => {
+  let recievedMessage = '';
+  let sources = [];
+
   emitter.on('data', (data) => {
     const parsedData = JSON.parse(data);
     if (parsedData.type === 'response') {
@@ -39,21 +53,36 @@ const handleEmitterEvents = (
         JSON.stringify({
           type: 'message',
           data: parsedData.data,
-          messageId: id,
+          messageId: messageId,
         }),
       );
+      recievedMessage += parsedData.data;
     } else if (parsedData.type === 'sources') {
       ws.send(
         JSON.stringify({
           type: 'sources',
           data: parsedData.data,
-          messageId: id,
+          messageId: messageId,
         }),
       );
+      sources = parsedData.data;
     }
   });
   emitter.on('end', () => {
-    ws.send(JSON.stringify({ type: 'messageEnd', messageId: id }));
+    ws.send(JSON.stringify({ type: 'messageEnd', messageId: messageId }));
+
+    db.insert(messages)
+      .values({
+        content: recievedMessage,
+        chatId: chatId,
+        messageId: messageId,
+        role: 'assistant',
+        metadata: JSON.stringify({
+          createdAt: new Date(),
+          ...(sources && sources.length > 0 && { sources }),
+        }),
+      })
+      .execute();
   });
   emitter.on('error', (data) => {
     const parsedData = JSON.parse(data);
@@ -74,8 +103,10 @@ export const handleMessage = async (
   embeddings: Embeddings,
 ) => {
   try {
-    const parsedMessage = JSON.parse(message) as Message;
-    const id = Math.random().toString(36).substring(7);
+    const parsedWSMessage = JSON.parse(message) as WSMessage;
+    const parsedMessage = parsedWSMessage.message;
+
+    const id = crypto.randomBytes(7).toString('hex');
 
     if (!parsedMessage.content)
       return ws.send(
@@ -86,7 +117,7 @@ export const handleMessage = async (
         }),
       );
 
-    const history: BaseMessage[] = parsedMessage.history.map((msg) => {
+    const history: BaseMessage[] = parsedWSMessage.history.map((msg) => {
       if (msg[0] === 'human') {
         return new HumanMessage({
           content: msg[1],
@@ -98,8 +129,9 @@ export const handleMessage = async (
       }
     });
 
-    if (parsedMessage.type === 'message') {
-      const handler = searchHandlers[parsedMessage.focusMode];
+    if (parsedWSMessage.type === 'message') {
+      const handler = searchHandlers[parsedWSMessage.focusMode];
+
       if (handler) {
         const emitter = handler(
           parsedMessage.content,
@@ -107,7 +139,37 @@ export const handleMessage = async (
           llm,
           embeddings,
         );
-        handleEmitterEvents(emitter, ws, id);
+
+        handleEmitterEvents(emitter, ws, id, parsedMessage.chatId);
+
+        const chat = await db.query.chats.findFirst({
+          where: eq(chats.id, parsedMessage.chatId),
+        });
+
+        if (!chat) {
+          await db
+            .insert(chats)
+            .values({
+              id: parsedMessage.chatId,
+              title: parsedMessage.content,
+              createdAt: new Date().toString(),
+              focusMode: parsedWSMessage.focusMode,
+            })
+            .execute();
+        }
+
+        await db
+          .insert(messages)
+          .values({
+            content: parsedMessage.content,
+            chatId: parsedMessage.chatId,
+            messageId: id,
+            role: 'user',
+            metadata: JSON.stringify({
+              createdAt: new Date(),
+            }),
+          })
+          .execute();
       } else {
         ws.send(
           JSON.stringify({

tsconfig.json

@@ -1,7 +1,8 @@
 {
   "compilerOptions": {
     "lib": ["ESNext"],
-    "module": "commonjs",
+    "module": "Node16",
+    "moduleResolution": "Node16",
     "target": "ESNext",
     "outDir": "dist",
     "sourceMap": false,

ui/app/c/[chatId]/page.tsx

@@ -0,0 +1,7 @@
+import ChatWindow from '@/components/ChatWindow';
+
+const Page = ({ params }: { params: { chatId: string } }) => {
+  return <ChatWindow id={params.chatId} />;
+};
+
+export default Page;

ui/app/discover/page.tsx

@@ -1,5 +0,0 @@
-const Page = () => {
-  return <div>page</div>;
-};
-
-export default Page;

ui/app/layout.tsx

@@ -4,6 +4,7 @@ import './globals.css';
 import { cn } from '@/lib/utils';
 import Sidebar from '@/components/Sidebar';
 import { Toaster } from 'sonner';
+import ThemeProvider from '@/components/theme/Provider';
 
 const montserrat = Montserrat({
   weight: ['300', '400', '500', '700'],
@@ -24,18 +25,20 @@ export default function RootLayout({
   children: React.ReactNode;
 }>) {
   return (
-    <html className="h-full" lang="en">
+    <html className="h-full" lang="en" suppressHydrationWarning>
       <body className={cn('h-full', montserrat.className)}>
-        <Sidebar>{children}</Sidebar>
-        <Toaster
-          toastOptions={{
-            unstyled: true,
-            classNames: {
-              toast:
-                'bg-[#111111] text-white rounded-lg p-4 flex flex-row items-center space-x-2',
-            },
-          }}
-        />
+        <ThemeProvider>
+          <Sidebar>{children}</Sidebar>
+          <Toaster
+            toastOptions={{
+              unstyled: true,
+              classNames: {
+                toast:
+                  'bg-light-primary dark:bg-dark-secondary dark:text-white/70 text-black-70 rounded-lg p-4 flex flex-row items-center space-x-2',
+              },
+            }}
+          />
+        </ThemeProvider>
       </body>
     </html>
   );

ui/app/library/layout.tsx

@@ -0,0 +1,12 @@
+import { Metadata } from 'next';
+import React from 'react';
+
+export const metadata: Metadata = {
+  title: 'Library - Perplexica',
+};
+
+const Layout = ({ children }: { children: React.ReactNode }) => {
+  return <div>{children}</div>;
+};
+
+export default Layout;

ui/app/library/page.tsx

@@ -0,0 +1,110 @@
+'use client';
+
+import DeleteChat from '@/components/DeleteChat';
+import { formatTimeDifference } from '@/lib/utils';
+import { BookOpenText, ClockIcon, Delete, ScanEye } from 'lucide-react';
+import Link from 'next/link';
+import { useEffect, useState } from 'react';
+
+export interface Chat {
+  id: string;
+  title: string;
+  createdAt: string;
+  focusMode: string;
+}
+
+const Page = () => {
+  const [chats, setChats] = useState<Chat[]>([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    const fetchChats = async () => {
+      setLoading(true);
+
+      const res = await fetch(`${process.env.NEXT_PUBLIC_API_URL}/chats`, {
+        method: 'GET',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+      });
+
+      const data = await res.json();
+
+      setChats(data.chats);
+      setLoading(false);
+    };
+
+    fetchChats();
+  }, []);
+
+  return loading ? (
+    <div className="flex flex-row items-center justify-center min-h-screen">
+      <svg
+        aria-hidden="true"
+        className="w-8 h-8 text-light-200 fill-light-secondary dark:text-[#202020] animate-spin dark:fill-[#ffffff3b]"
+        viewBox="0 0 100 101"
+        fill="none"
+        xmlns="http://www.w3.org/2000/svg"
+      >
+        <path
+          d="M100 50.5908C100.003 78.2051 78.1951 100.003 50.5908 100C22.9765 99.9972 0.997224 78.018 1 50.4037C1.00281 22.7993 22.8108 0.997224 50.4251 1C78.0395 1.00281 100.018 22.8108 100 50.4251ZM9.08164 50.594C9.06312 73.3997 27.7909 92.1272 50.5966 92.1457C73.4023 92.1642 92.1298 73.4365 92.1483 50.6308C92.1669 27.8251 73.4392 9.0973 50.6335 9.07878C27.8278 9.06026 9.10003 27.787 9.08164 50.594Z"
+          fill="currentColor"
+        />
+        <path
+          d="M93.9676 39.0409C96.393 38.4037 97.8624 35.9116 96.9801 33.5533C95.1945 28.8227 92.871 24.3692 90.0681 20.348C85.6237 14.1775 79.4473 9.36872 72.0454 6.45794C64.6435 3.54717 56.3134 2.65431 48.3133 3.89319C45.869 4.27179 44.3768 6.77534 45.014 9.20079C45.6512 11.6262 48.1343 13.0956 50.5786 12.717C56.5073 11.8281 62.5542 12.5399 68.0406 14.7911C73.527 17.0422 78.2187 20.7487 81.5841 25.4923C83.7976 28.5886 85.4467 32.059 86.4416 35.7474C87.1273 38.1189 89.5423 39.6781 91.9676 39.0409Z"
+          fill="currentFill"
+        />
+      </svg>
+    </div>
+  ) : (
+    <div>
+      <div className="fixed z-40 top-0 left-0 right-0 lg:pl-[104px] lg:pr-6 lg:px-8 px-4 py-4 lg:py-6 border-b border-light-200 dark:border-dark-200">
+        <div className="flex flex-row items-center space-x-2 max-w-screen-lg lg:mx-auto">
+          <BookOpenText />
+          <h2 className="text-black dark:text-white lg:text-3xl lg:font-medium">
+            Library
+          </h2>
+        </div>
+      </div>
+      {chats.length === 0 && (
+        <div className="flex flex-row items-center justify-center min-h-screen">
+          <p className="text-black/70 dark:text-white/70 text-sm">
+            No chats found.
+          </p>
+        </div>
+      )}
+      {chats.length > 0 && (
+        <div className="flex flex-col pt-16 lg:pt-24">
+          {chats.map((chat, i) => (
+            <div
+              className="flex flex-col space-y-4 border-b border-white-200 dark:border-dark-200 py-6 lg:mx-4"
+              key={i}
+            >
+              <Link
+                href={`/c/${chat.id}`}
+                className="text-black dark:text-white lg:text-xl font-medium truncate transition duration-200 hover:text-[#24A0ED] dark:hover:text-[#24A0ED] cursor-pointer"
+              >
+                {chat.title}
+              </Link>
+              <div className="flex flex-row items-center justify-between w-full">
+                <div className="flex flex-row items-center space-x-1 lg:space-x-1.5 text-black/70 dark:text-white/70">
+                  <ClockIcon size={15} />
+                  <p className="text-xs">
+                    {formatTimeDifference(new Date(), chat.createdAt)} Ago
+                  </p>
+                </div>
+                <DeleteChat
+                  chatId={chat.id}
+                  chats={chats}
+                  setChats={setChats}
+                />
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default Page;

ui/app/page.tsx

@@ -1,5 +1,6 @@
 import ChatWindow from '@/components/ChatWindow';
 import { Metadata } from 'next';
+import { Suspense } from 'react';
 
 export const metadata: Metadata = {
   title: 'Chat - Perplexica',
@@ -9,7 +10,9 @@ export const metadata: Metadata = {
 const Home = () => {
   return (
     <div>
-      <ChatWindow />
+      <Suspense>
+        <ChatWindow />
+      </Suspense>
     </div>
   );
 };

ui/components/Chat.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useEffect, useRef, useState } from 'react';
+import { Fragment, useEffect, useRef, useState } from 'react';
 import MessageInput from './MessageInput';
 import { Message } from './ChatWindow';
 import MessageBox from './MessageBox';
@@ -53,7 +53,7 @@ const Chat = ({
         const isLast = i === messages.length - 1;
 
         return (
-          <>
+          <Fragment key={msg.messageId}>
             <MessageBox
               key={i}
               message={msg}
@@ -63,11 +63,12 @@ const Chat = ({
               dividerRef={isLast ? dividerRef : undefined}
               isLast={isLast}
               rewrite={rewrite}
+              sendMessage={sendMessage}
             />
             {!isLast && msg.role === 'assistant' && (
-              <div className="h-px w-full bg-[#1C1C1C]" />
+              <div className="h-px w-full bg-light-secondary dark:bg-dark-secondary" />
             )}
-          </>
+          </Fragment>
         );
       })}
       {loading && !messageAppeared && <MessageBoxLoading />}

ui/components/ChatWindow.tsx

@@ -1,21 +1,31 @@
 'use client';
 
-import { useEffect, useState } from 'react';
+import { useEffect, useRef, useState } from 'react';
 import { Document } from '@langchain/core/documents';
 import Navbar from './Navbar';
 import Chat from './Chat';
 import EmptyChat from './EmptyChat';
+import crypto from 'crypto';
 import { toast } from 'sonner';
+import { useSearchParams } from 'next/navigation';
+import { getSuggestions } from '@/lib/actions';
+import Error from 'next/error';
 
 export type Message = {
-  id: string;
+  messageId: string;
+  chatId: string;
   createdAt: Date;
   content: string;
   role: 'user' | 'assistant';
+  suggestions?: string[];
   sources?: Document[];
 };
 
-const useSocket = (url: string) => {
+const useSocket = (
+  url: string,
+  setIsWSReady: (ready: boolean) => void,
+  setError: (error: boolean) => void,
+) => {
   const [ws, setWs] = useState<WebSocket | null>(null);
 
   useEffect(() => {
@@ -28,43 +38,56 @@ const useSocket = (url: string) => {
           'embeddingModelProvider',
         );
 
+        const providers = await fetch(
+          `${process.env.NEXT_PUBLIC_API_URL}/models`,
+          {
+            headers: {
+              'Content-Type': 'application/json',
+            },
+          },
+        ).then(async (res) => await res.json());
+
         if (
           !chatModel ||
           !chatModelProvider ||
           !embeddingModel ||
           !embeddingModelProvider
         ) {
-          const providers = await fetch(
-            `${process.env.NEXT_PUBLIC_API_URL}/models`,
-            {
-              headers: {
-                'Content-Type': 'application/json',
-              },
-            },
-          ).then(async (res) => await res.json());
+          if (!chatModel || !chatModelProvider) {
+            const chatModelProviders = providers.chatModelProviders;
 
-          const chatModelProviders = providers.chatModelProviders;
-          const embeddingModelProviders = providers.embeddingModelProviders;
+            chatModelProvider = Object.keys(chatModelProviders)[0];
 
-          if (
-            !chatModelProviders ||
-            Object.keys(chatModelProviders).length === 0
-          )
-            return console.error('No chat models available');
+            if (chatModelProvider === 'custom_openai') {
+              toast.error(
+                'Seems like you are using the custom OpenAI provider, please open the settings and configure the API key and base URL',
+              );
+              setError(true);
+              return;
+            } else {
+              chatModel = Object.keys(chatModelProviders[chatModelProvider])[0];
+              if (
+                !chatModelProviders ||
+                Object.keys(chatModelProviders).length === 0
+              )
+                return toast.error('No chat models available');
+            }
+          }
 
-          if (
-            !embeddingModelProviders ||
-            Object.keys(embeddingModelProviders).length === 0
-          )
-            return console.error('No embedding models available');
+          if (!embeddingModel || !embeddingModelProvider) {
+            const embeddingModelProviders = providers.embeddingModelProviders;
 
-          chatModelProvider = Object.keys(chatModelProviders)[0];
-          chatModel = Object.keys(chatModelProviders[chatModelProvider])[0];
+            if (
+              !embeddingModelProviders ||
+              Object.keys(embeddingModelProviders).length === 0
+            )
+              return toast.error('No embedding models available');
 
-          embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
-          embeddingModel = Object.keys(
-            embeddingModelProviders[embeddingModelProvider],
-          )[0];
+            embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
+            embeddingModel = Object.keys(
+              embeddingModelProviders[embeddingModelProvider],
+            )[0];
+          }
 
           localStorage.setItem('chatModel', chatModel!);
           localStorage.setItem('chatModelProvider', chatModelProvider);
@@ -73,6 +96,47 @@ const useSocket = (url: string) => {
             'embeddingModelProvider',
             embeddingModelProvider,
           );
+        } else {
+          const chatModelProviders = providers.chatModelProviders;
+          const embeddingModelProviders = providers.embeddingModelProviders;
+
+          if (
+            Object.keys(chatModelProviders).length > 0 &&
+            !chatModelProviders[chatModelProvider]
+          ) {
+            chatModelProvider = Object.keys(chatModelProviders)[0];
+            localStorage.setItem('chatModelProvider', chatModelProvider);
+          }
+
+          if (
+            chatModelProvider &&
+            chatModelProvider != 'custom_openai' &&
+            !chatModelProviders[chatModelProvider][chatModel]
+          ) {
+            chatModel = Object.keys(chatModelProviders[chatModelProvider])[0];
+            localStorage.setItem('chatModel', chatModel);
+          }
+
+          if (
+            Object.keys(embeddingModelProviders).length > 0 &&
+            !embeddingModelProviders[embeddingModelProvider]
+          ) {
+            embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
+            localStorage.setItem(
+              'embeddingModelProvider',
+              embeddingModelProvider,
+            );
+          }
+
+          if (
+            embeddingModelProvider &&
+            !embeddingModelProviders[embeddingModelProvider][embeddingModel]
+          ) {
+            embeddingModel = Object.keys(
+              embeddingModelProviders[embeddingModelProvider],
+            )[0];
+            localStorage.setItem('embeddingModel', embeddingModel);
+          }
         }
 
         const wsURL = new URL(url);
@@ -99,42 +163,161 @@ const useSocket = (url: string) => {
 
         const ws = new WebSocket(wsURL.toString());
 
+        const timeoutId = setTimeout(() => {
+          if (ws.readyState !== 1) {
+            toast.error(
+              'Failed to connect to the server. Please try again later.',
+            );
+          }
+        }, 10000);
+
         ws.onopen = () => {
           console.log('[DEBUG] open');
-          setWs(ws);
+          clearTimeout(timeoutId);
+          setIsWSReady(true);
         };
 
-        ws.onmessage = (e) => {
-          const parsedData = JSON.parse(e.data);
-          if (parsedData.type === 'error') {
-            toast.error(parsedData.data);
-            if (parsedData.key === 'INVALID_MODEL_SELECTED') {
-              localStorage.clear();
-            }
-          }
+        ws.onerror = () => {
+          clearTimeout(timeoutId);
+          setError(true);
+          toast.error('WebSocket connection error.');
         };
+
+        ws.onclose = () => {
+          clearTimeout(timeoutId);
+          setError(true);
+          console.log('[DEBUG] closed');
+        };
+
+        ws.addEventListener('message', (e) => {
+          const data = JSON.parse(e.data);
+          if (data.type === 'error') {
+            toast.error(data.data);
+          }
+        });
+
+        setWs(ws);
       };
 
       connectWs();
     }
-
-    return () => {
-      ws?.close();
-      console.log('[DEBUG] closed');
-    };
-  }, [ws, url]);
+  }, [ws, url, setIsWSReady, setError]);
 
   return ws;
 };
 
-const ChatWindow = () => {
-  const ws = useSocket(process.env.NEXT_PUBLIC_WS_URL!);
-  const [chatHistory, setChatHistory] = useState<[string, string][]>([]);
-  const [messages, setMessages] = useState<Message[]>([]);
+const loadMessages = async (
+  chatId: string,
+  setMessages: (messages: Message[]) => void,
+  setIsMessagesLoaded: (loaded: boolean) => void,
+  setChatHistory: (history: [string, string][]) => void,
+  setFocusMode: (mode: string) => void,
+  setNotFound: (notFound: boolean) => void,
+) => {
+  const res = await fetch(
+    `${process.env.NEXT_PUBLIC_API_URL}/chats/${chatId}`,
+    {
+      method: 'GET',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    },
+  );
+
+  if (res.status === 404) {
+    setNotFound(true);
+    setIsMessagesLoaded(true);
+    return;
+  }
+
+  const data = await res.json();
+
+  const messages = data.messages.map((msg: any) => {
+    return {
+      ...msg,
+      ...JSON.parse(msg.metadata),
+    };
+  }) as Message[];
+
+  setMessages(messages);
+
+  const history = messages.map((msg) => {
+    return [msg.role, msg.content];
+  }) as [string, string][];
+
+  console.log('[DEBUG] messages loaded');
+
+  document.title = messages[0].content;
+
+  setChatHistory(history);
+  setFocusMode(data.chat.focusMode);
+  setIsMessagesLoaded(true);
+};
+
+const ChatWindow = ({ id }: { id?: string }) => {
+  const searchParams = useSearchParams();
+  const initialMessage = searchParams.get('q');
+
+  const [chatId, setChatId] = useState<string | undefined>(id);
+  const [newChatCreated, setNewChatCreated] = useState(false);
+
+  const [hasError, setHasError] = useState(false);
+  const [isReady, setIsReady] = useState(false);
+
+  const [isWSReady, setIsWSReady] = useState(false);
+  const ws = useSocket(
+    process.env.NEXT_PUBLIC_WS_URL!,
+    setIsWSReady,
+    setHasError,
+  );
+
   const [loading, setLoading] = useState(false);
   const [messageAppeared, setMessageAppeared] = useState(false);
+
+  const [chatHistory, setChatHistory] = useState<[string, string][]>([]);
+  const [messages, setMessages] = useState<Message[]>([]);
+
   const [focusMode, setFocusMode] = useState('webSearch');
 
+  const [isMessagesLoaded, setIsMessagesLoaded] = useState(false);
+
+  const [notFound, setNotFound] = useState(false);
+
+  useEffect(() => {
+    if (
+      chatId &&
+      !newChatCreated &&
+      !isMessagesLoaded &&
+      messages.length === 0
+    ) {
+      loadMessages(
+        chatId,
+        setMessages,
+        setIsMessagesLoaded,
+        setChatHistory,
+        setFocusMode,
+        setNotFound,
+      );
+    } else if (!chatId) {
+      setNewChatCreated(true);
+      setIsMessagesLoaded(true);
+      setChatId(crypto.randomBytes(20).toString('hex'));
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const messagesRef = useRef<Message[]>([]);
+
+  useEffect(() => {
+    messagesRef.current = messages;
+  }, [messages]);
+
+  useEffect(() => {
+    if (isMessagesLoaded && isWSReady) {
+      setIsReady(true);
+    }
+  }, [isMessagesLoaded, isWSReady]);
+
   const sendMessage = async (message: string) => {
     if (loading) return;
     setLoading(true);
@@ -144,10 +327,15 @@ const ChatWindow = () => {
     let recievedMessage = '';
     let added = false;
 
+    const messageId = crypto.randomBytes(7).toString('hex');
+
     ws?.send(
       JSON.stringify({
         type: 'message',
-        content: message,
+        message: {
+          chatId: chatId!,
+          content: message,
+        },
         focusMode: focusMode,
         history: [...chatHistory, ['human', message]],
       }),
@@ -157,13 +345,14 @@ const ChatWindow = () => {
       ...prevMessages,
       {
         content: message,
-        id: Math.random().toString(36).substring(7),
+        messageId: messageId,
+        chatId: chatId!,
         role: 'user',
         createdAt: new Date(),
       },
     ]);
 
-    const messageHandler = (e: MessageEvent) => {
+    const messageHandler = async (e: MessageEvent) => {
       const data = JSON.parse(e.data);
 
       if (data.type === 'error') {
@@ -179,7 +368,8 @@ const ChatWindow = () => {
             ...prevMessages,
             {
               content: '',
-              id: data.messageId,
+              messageId: data.messageId,
+              chatId: chatId!,
               role: 'assistant',
               sources: sources,
               createdAt: new Date(),
@@ -196,7 +386,8 @@ const ChatWindow = () => {
             ...prevMessages,
             {
               content: data.data,
-              id: data.messageId,
+              messageId: data.messageId,
+              chatId: chatId!,
               role: 'assistant',
               sources: sources,
               createdAt: new Date(),
@@ -207,7 +398,7 @@ const ChatWindow = () => {
 
         setMessages((prev) =>
           prev.map((message) => {
-            if (message.id === data.messageId) {
+            if (message.messageId === data.messageId) {
               return { ...message, content: message.content + data.data };
             }
 
@@ -225,8 +416,28 @@ const ChatWindow = () => {
           ['human', message],
           ['assistant', recievedMessage],
         ]);
+
         ws?.removeEventListener('message', messageHandler);
         setLoading(false);
+
+        const lastMsg = messagesRef.current[messagesRef.current.length - 1];
+
+        if (
+          lastMsg.role === 'assistant' &&
+          lastMsg.sources &&
+          lastMsg.sources.length > 0 &&
+          !lastMsg.suggestions
+        ) {
+          const suggestions = await getSuggestions(messagesRef.current);
+          setMessages((prev) =>
+            prev.map((msg) => {
+              if (msg.messageId === lastMsg.messageId) {
+                return { ...msg, suggestions: suggestions };
+              }
+              return msg;
+            }),
+          );
+        }
       }
     };
 
@@ -234,7 +445,7 @@ const ChatWindow = () => {
   };
 
   const rewrite = (messageId: string) => {
-    const index = messages.findIndex((msg) => msg.id === messageId);
+    const index = messages.findIndex((msg) => msg.messageId === messageId);
 
     if (index === -1) return;
 
@@ -250,42 +461,63 @@ const ChatWindow = () => {
     sendMessage(message.content);
   };
 
-  return ws ? (
-    <div>
-      {messages.length > 0 ? (
-        <>
-          <Navbar messages={messages} />
-          <Chat
-            loading={loading}
-            messages={messages}
+  useEffect(() => {
+    if (isReady && initialMessage) {
+      sendMessage(initialMessage);
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [isReady, initialMessage]);
+
+  if (hasError) {
+    return (
+      <div className="flex flex-col items-center justify-center min-h-screen">
+        <p className="dark:text-white/70 text-black/70 text-sm">
+          Failed to connect to the server. Please try again later.
+        </p>
+      </div>
+    );
+  }
+
+  return isReady ? (
+    notFound ? (
+      <Error statusCode={404} />
+    ) : (
+      <div>
+        {messages.length > 0 ? (
+          <>
+            <Navbar messages={messages} />
+            <Chat
+              loading={loading}
+              messages={messages}
+              sendMessage={sendMessage}
+              messageAppeared={messageAppeared}
+              rewrite={rewrite}
+            />
+          </>
+        ) : (
+          <EmptyChat
             sendMessage={sendMessage}
-            messageAppeared={messageAppeared}
-            rewrite={rewrite}
+            focusMode={focusMode}
+            setFocusMode={setFocusMode}
           />
-        </>
-      ) : (
-        <EmptyChat
-          sendMessage={sendMessage}
-          focusMode={focusMode}
-          setFocusMode={setFocusMode}
-        />
-      )}
-    </div>
+        )}
+      </div>
+    )
   ) : (
     <div className="flex flex-row items-center justify-center min-h-screen">
       <svg
         aria-hidden="true"
-        className="w-8 h-8 text-[#202020] animate-spin fill-[#ffffff3b]"
+        className="w-8 h-8 text-light-200 fill-light-secondary dark:text-[#202020] animate-spin dark:fill-[#ffffff3b]"
         viewBox="0 0 100 101"
         fill="none"
         xmlns="http://www.w3.org/2000/svg"
       >
         <path
-          d="M100 50.5908C100 78.2051 77.6142 100.591 50 100.591C22.3858 100.591 0 78.2051 0 50.5908C0 22.9766 22.3858 0.59082 50 0.59082C77.6142 0.59082 100 22.9766 100 50.5908ZM9.08144 50.5908C9.08144 73.1895 27.4013 91.5094 50 91.5094C72.5987 91.5094 90.9186 73.1895 90.9186 50.5908C90.9186 27.9921 72.5987 9.67226 50 9.67226C27.4013 9.67226 9.08144 27.9921 9.08144 50.5908Z"
+          d="M100 50.5908C100.003 78.2051 78.1951 100.003 50.5908 100C22.9765 99.9972 0.997224 78.018 1 50.4037C1.00281 22.7993 22.8108 0.997224 50.4251 1C78.0395 1.00281 100.018 22.8108 100 50.4251ZM9.08164 50.594C9.06312 73.3997 27.7909 92.1272 50.5966 92.1457C73.4023 92.1642 92.1298 73.4365 92.1483 50.6308C92.1669 27.8251 73.4392 9.0973 50.6335 9.07878C27.8278 9.06026 9.10003 27.787 9.08164 50.594Z"
           fill="currentColor"
         />
         <path
-          d="M93.9676 39.0409C96.393 38.4038 97.8624 35.9116 97.0079 33.5539C95.2932 28.8227 92.871 24.3692 89.8167 20.348C85.8452 15.1192 80.8826 10.7238 75.2124 7.41289C69.5422 4.10194 63.2754 1.94025 56.7698 1.05124C51.7666 0.367541 46.6976 0.446843 41.7345 1.27873C39.2613 1.69328 37.813 4.19778 38.4501 6.62326C39.0873 9.04874 41.5694 10.4717 44.0505 10.1071C47.8511 9.54855 51.7191 9.52689 55.5402 10.0491C60.8642 10.7766 65.9928 12.5457 70.6331 15.2552C75.2735 17.9648 79.3347 21.5619 82.5849 25.841C84.9175 28.9121 86.7997 32.2913 88.1811 35.8758C89.083 38.2158 91.5421 39.6781 93.9676 39.0409Z"
+          d="M93.9676 39.0409C96.393 38.4037 97.8624 35.9116 96.9801 33.5533C95.1945 28.8227 92.871 24.3692 90.0681 20.348C85.6237 14.1775 79.4473 9.36872 72.0454 6.45794C64.6435 3.54717 56.3134 2.65431 48.3133 3.89319C45.869 4.27179 44.3768 6.77534 45.014 9.20079C45.6512 11.6262 48.1343 13.0956 50.5786 12.717C56.5073 11.8281 62.5542 12.5399 68.0406 14.7911C73.527 17.0422 78.2187 20.7487 81.5841 25.4923C83.7976 28.5886 85.4467 32.059 86.4416 35.7474C87.1273 38.1189 89.5423 39.6781 91.9676 39.0409Z"
           fill="currentFill"
         />
       </svg>

ui/components/DeleteChat.tsx

@@ -0,0 +1,114 @@
+import { Delete, Trash } from 'lucide-react';
+import { Dialog, Transition } from '@headlessui/react';
+import { Fragment, useState } from 'react';
+import { toast } from 'sonner';
+import { Chat } from '@/app/library/page';
+
+const DeleteChat = ({
+  chatId,
+  chats,
+  setChats,
+}: {
+  chatId: string;
+  chats: Chat[];
+  setChats: (chats: Chat[]) => void;
+}) => {
+  const [confirmationDialogOpen, setConfirmationDialogOpen] = useState(false);
+  const [loading, setLoading] = useState(false);
+
+  const handleDelete = async () => {
+    setLoading(true);
+    try {
+      const res = await fetch(
+        `${process.env.NEXT_PUBLIC_API_URL}/chats/${chatId}`,
+        {
+          method: 'DELETE',
+          headers: {
+            'Content-Type': 'application/json',
+          },
+        },
+      );
+
+      if (res.status != 200) {
+        throw new Error('Failed to delete chat');
+      }
+
+      const newChats = chats.filter((chat) => chat.id !== chatId);
+
+      setChats(newChats);
+    } catch (err: any) {
+      toast.error(err.message);
+    } finally {
+      setConfirmationDialogOpen(false);
+      setLoading(false);
+    }
+  };
+
+  return (
+    <>
+      <button
+        onClick={() => {
+          setConfirmationDialogOpen(true);
+        }}
+        className="bg-transparent text-red-400 hover:scale-105 transition duration-200"
+      >
+        <Trash size={17} />
+      </button>
+      <Transition appear show={confirmationDialogOpen} as={Fragment}>
+        <Dialog
+          as="div"
+          className="relative z-50"
+          onClose={() => {
+            if (!loading) {
+              setConfirmationDialogOpen(false);
+            }
+          }}
+        >
+          <Dialog.Backdrop className="fixed inset-0 bg-black/30" />
+          <div className="fixed inset-0 overflow-y-auto">
+            <div className="flex min-h-full items-center justify-center p-4 text-center">
+              <Transition.Child
+                as={Fragment}
+                enter="ease-out duration-200"
+                enterFrom="opacity-0 scale-95"
+                enterTo="opacity-100 scale-100"
+                leave="ease-in duration-100"
+                leaveFrom="opacity-100 scale-200"
+                leaveTo="opacity-0 scale-95"
+              >
+                <Dialog.Panel className="w-full max-w-md transform rounded-2xl bg-light-secondary dark:bg-dark-secondary border border-light-200 dark:border-dark-200 p-6 text-left align-middle shadow-xl transition-all">
+                  <Dialog.Title className="text-lg font-medium leading-6 dark:text-white">
+                    Delete Confirmation
+                  </Dialog.Title>
+                  <Dialog.Description className="text-sm dark:text-white/70 text-black/70">
+                    Are you sure you want to delete this chat?
+                  </Dialog.Description>
+                  <div className="flex flex-row items-end justify-end space-x-4 mt-6">
+                    <button
+                      onClick={() => {
+                        if (!loading) {
+                          setConfirmationDialogOpen(false);
+                        }
+                      }}
+                      className="text-black/50 dark:text-white/50 text-sm hover:text-black/70 hover:dark:text-white/70 transition duration-200"
+                    >
+                      Cancel
+                    </button>
+                    <button
+                      onClick={handleDelete}
+                      className="text-red-400 text-sm hover:text-red-500 transition duration200"
+                    >
+                      Delete
+                    </button>
+                  </div>
+                </Dialog.Panel>
+              </Transition.Child>
+            </div>
+          </div>
+        </Dialog>
+      </Transition>
+    </>
+  );
+};
+
+export default DeleteChat;

ui/components/EmptyChat.tsx

@@ -10,15 +10,17 @@ const EmptyChat = ({
   setFocusMode: (mode: string) => void;
 }) => {
   return (
-    <div className="flex flex-col items-center justify-center min-h-screen max-w-screen-sm mx-auto p-2 space-y-8">
-      <h2 className="text-white/70 text-3xl font-medium -mt-8">
-        Research begins here.
-      </h2>
-      <EmptyChatMessageInput
-        sendMessage={sendMessage}
-        focusMode={focusMode}
-        setFocusMode={setFocusMode}
-      />
+    <div className="relative">
+      <div className="flex flex-col items-center justify-center min-h-screen max-w-screen-sm mx-auto p-2 space-y-8">
+        <h2 className="text-black/70 dark:text-white/70 text-3xl font-medium -mt-8">
+          Research begins here.
+        </h2>
+        <EmptyChatMessageInput
+          sendMessage={sendMessage}
+          focusMode={focusMode}
+          setFocusMode={setFocusMode}
+        />
+      </div>
     </div>
   );
 };

ui/components/EmptyChatMessageInput.tsx

@@ -1,7 +1,8 @@
 import { ArrowRight } from 'lucide-react';
-import { useState } from 'react';
+import { useEffect, useRef, useState } from 'react';
 import TextareaAutosize from 'react-textarea-autosize';
-import { Attach, CopilotToggle, Focus } from './MessageInputActions';
+import CopilotToggle from './MessageInputActions/Copilot';
+import Focus from './MessageInputActions/Focus';
 
 const EmptyChatMessageInput = ({
   sendMessage,
@@ -15,6 +16,23 @@ const EmptyChatMessageInput = ({
   const [copilotEnabled, setCopilotEnabled] = useState(false);
   const [message, setMessage] = useState('');
 
+  const inputRef = useRef<HTMLTextAreaElement | null>(null);
+
+  const handleKeyDown = (e: KeyboardEvent) => {
+    if (e.key === '/') {
+      e.preventDefault();
+      inputRef.current?.focus();
+    }
+  };
+
+  useEffect(() => {
+    document.addEventListener('keydown', handleKeyDown);
+
+    return () => {
+      document.removeEventListener('keydown', handleKeyDown);
+    };
+  }, []);
+
   return (
     <form
       onSubmit={(e) => {
@@ -31,12 +49,13 @@ const EmptyChatMessageInput = ({
       }}
       className="w-full"
     >
-      <div className="flex flex-col bg-[#111111] px-5 pt-5 pb-2 rounded-lg w-full border border-[#1C1C1C]">
+      <div className="flex flex-col bg-light-secondary dark:bg-dark-secondary px-5 pt-5 pb-2 rounded-lg w-full border border-light-200 dark:border-dark-200">
         <TextareaAutosize
+          ref={inputRef}
           value={message}
           onChange={(e) => setMessage(e.target.value)}
           minRows={2}
-          className="bg-transparent placeholder:text-white/50 text-sm text-white resize-none focus:outline-none w-full max-h-24 lg:max-h-36 xl:max-h-48"
+          className="bg-transparent placeholder:text-black/50 dark:placeholder:text-white/50 text-sm text-black dark:text-white resize-none focus:outline-none w-full max-h-24 lg:max-h-36 xl:max-h-48"
           placeholder="Ask anything..."
         />
         <div className="flex flex-row items-center justify-between mt-4">
@@ -51,7 +70,7 @@ const EmptyChatMessageInput = ({
             />
             <button
               disabled={message.trim().length === 0}
-              className="bg-[#24A0ED] text-white disabled:text-white/50 hover:bg-opacity-85 transition duration-100 disabled:bg-[#ececec21] rounded-full p-2"
+              className="bg-[#24A0ED] text-white disabled:text-black/50 dark:disabled:text-white/50 disabled:bg-[#e0e0dc] dark:disabled:bg-[#ececec21] hover:bg-opacity-85 transition duration-100 rounded-full p-2"
             >
               <ArrowRight className="bg-background" size={17} />
             </button>

ui/components/Layout.tsx

@@ -1,6 +1,6 @@
 const Layout = ({ children }: { children: React.ReactNode }) => {
   return (
-    <main className="lg:pl-20 bg-[#0A0A0A] min-h-screen">
+    <main className="lg:pl-20 bg-light-primary dark:bg-dark-primary min-h-screen">
       <div className="max-w-screen-lg lg:mx-auto mx-4">{children}</div>
     </main>
   );

ui/components/MessageActions/Copy.tsx

@@ -19,7 +19,7 @@ const Copy = ({
         setCopied(true);
         setTimeout(() => setCopied(false), 1000);
       }}
-      className="p-2 text-white/70 rounded-xl hover:bg-[#1c1c1c] transition duration-200 hover:text-white"
+      className="p-2 text-black/70 dark:text-white/70 rounded-xl hover:bg-light-secondary dark:hover:bg-dark-secondary transition duration-200 hover:text-black dark:hover:text-white"
     >
       {copied ? <Check size={18} /> : <ClipboardList size={18} />}
     </button>

ui/components/MessageActions/Rewrite.tsx

@@ -10,9 +10,10 @@ const Rewrite = ({
   return (
     <button
       onClick={() => rewrite(messageId)}
-      className="p-2 text-white/70 rounded-xl hover:bg-[#1c1c1c] transition duration-200 hover:text-white"
+      className="py-2 px-3 text-black/70 dark:text-white/70 rounded-xl hover:bg-light-secondary dark:hover:bg-dark-secondary transition duration-200 hover:text-black dark:hover:text-white flex flex-row items-center space-x-1"
     >
       <ArrowLeftRight size={18} />
+      <p className="text-xs font-medium">Rewrite</p>
     </button>
   );
 };

ui/components/MessageBox.tsx

@@ -4,7 +4,14 @@
 import React, { MutableRefObject, useEffect, useState } from 'react';
 import { Message } from './ChatWindow';
 import { cn } from '@/lib/utils';
-import { BookCopy, Disc3, Share, Volume2, StopCircle } from 'lucide-react';
+import {
+  BookCopy,
+  Disc3,
+  Volume2,
+  StopCircle,
+  Layers3,
+  Plus,
+} from 'lucide-react';
 import Markdown from 'markdown-to-jsx';
 import Copy from './MessageActions/Copy';
 import Rewrite from './MessageActions/Rewrite';
@@ -21,6 +28,7 @@ const MessageBox = ({
   dividerRef,
   isLast,
   rewrite,
+  sendMessage,
 }: {
   message: Message;
   messageIndex: number;
@@ -29,6 +37,7 @@ const MessageBox = ({
   dividerRef?: MutableRefObject<HTMLDivElement | null>;
   isLast: boolean;
   rewrite: (messageId: string) => void;
+  sendMessage: (message: string) => void;
 }) => {
   const [parsedMessage, setParsedMessage] = useState(message.content);
   const [speechMessage, setSpeechMessage] = useState(message.content);
@@ -45,7 +54,7 @@ const MessageBox = ({
         message.content.replace(
           regex,
           (_, number) =>
-            `<a href="${message.sources?.[number - 1]?.metadata?.url}" target="_blank" className="bg-[#1C1C1C] px-1 rounded ml-1 no-underline text-xs text-white/70 relative">${number}</a>`,
+            `<a href="${message.sources?.[number - 1]?.metadata?.url}" target="_blank" className="bg-light-secondary dark:bg-dark-secondary px-1 rounded ml-1 no-underline text-xs text-black/70 dark:text-white/70 relative">${number}</a>`,
         ),
       );
     }
@@ -60,7 +69,7 @@ const MessageBox = ({
     <div>
       {message.role === 'user' && (
         <div className={cn('w-full', messageIndex === 0 ? 'pt-16' : 'pt-8')}>
-          <h2 className="text-white font-medium text-3xl lg:w-9/12">
+          <h2 className="text-black dark:text-white font-medium text-3xl lg:w-9/12">
             {message.content}
           </h2>
         </div>
@@ -75,8 +84,10 @@ const MessageBox = ({
             {message.sources && message.sources.length > 0 && (
               <div className="flex flex-col space-y-2">
                 <div className="flex flex-row items-center space-x-2">
-                  <BookCopy className="text-white" size={20} />
-                  <h3 className="text-white font-medium text-xl">Sources</h3>
+                  <BookCopy className="text-black dark:text-white" size={20} />
+                  <h3 className="text-black dark:text-white font-medium text-xl">
+                    Sources
+                  </h3>
                 </div>
                 <MessageSources sources={message.sources} />
               </div>
@@ -85,23 +96,30 @@ const MessageBox = ({
               <div className="flex flex-row items-center space-x-2">
                 <Disc3
                   className={cn(
-                    'text-white',
+                    'text-black dark:text-white',
                     isLast && loading ? 'animate-spin' : 'animate-none',
                   )}
                   size={20}
                 />
-                <h3 className="text-white font-medium text-xl">Answer</h3>
+                <h3 className="text-black dark:text-white font-medium text-xl">
+                  Answer
+                </h3>
               </div>
-              <Markdown className="prose max-w-none break-words prose-invert prose-p:leading-relaxed prose-pre:p-0 text-white text-sm md:text-base font-medium">
+              <Markdown
+                className={cn(
+                  'prose dark:prose-invert prose-p:leading-relaxed prose-pre:p-0',
+                  'max-w-none break-words text-black dark:text-white text-sm md:text-base font-medium',
+                )}
+              >
                 {parsedMessage}
               </Markdown>
               {loading && isLast ? null : (
-                <div className="flex flex-row items-center justify-between w-full text-white py-4 -mx-2">
+                <div className="flex flex-row items-center justify-between w-full text-black dark:text-white py-4 -mx-2">
                   <div className="flex flex-row items-center space-x-1">
-                    <button className="p-2 text-white/70 rounded-xl hover:bg-[#1c1c1c] transition duration-200 hover:text-white">
+                    {/*  <button className="p-2 text-black/70 dark:text-white/70 rounded-xl hover:bg-light-secondary dark:hover:bg-dark-secondary transition duration-200 hover:text-black text-black dark:hover:text-white">
                       <Share size={18} />
-                    </button>
-                    <Rewrite rewrite={rewrite} messageId={message.id} />
+                    </button> */}
+                    <Rewrite rewrite={rewrite} messageId={message.messageId} />
                   </div>
                   <div className="flex flex-row items-center space-x-1">
                     <Copy initialMessage={message.content} message={message} />
@@ -113,7 +131,7 @@ const MessageBox = ({
                           start();
                         }
                       }}
-                      className="p-2 text-white/70 rounded-xl hover:bg-[#1c1c1c] transition duration-200 hover:text-white"
+                      className="p-2 text-black/70 dark:text-white/70 rounded-xl hover:bg-light-secondary dark:hover:bg-dark-secondary transition duration-200 hover:text-black dark:hover:text-white"
                     >
                       {speechStatus === 'started' ? (
                         <StopCircle size={18} />
@@ -124,6 +142,45 @@ const MessageBox = ({
                   </div>
                 </div>
               )}
+              {isLast &&
+                message.suggestions &&
+                message.suggestions.length > 0 &&
+                message.role === 'assistant' &&
+                !loading && (
+                  <>
+                    <div className="h-px w-full bg-light-secondary dark:bg-dark-secondary" />
+                    <div className="flex flex-col space-y-3 text-black dark:text-white">
+                      <div className="flex flex-row items-center space-x-2 mt-4">
+                        <Layers3 />
+                        <h3 className="text-xl font-medium">Related</h3>
+                      </div>
+                      <div className="flex flex-col space-y-3">
+                        {message.suggestions.map((suggestion, i) => (
+                          <div
+                            className="flex flex-col space-y-3 text-sm"
+                            key={i}
+                          >
+                            <div className="h-px w-full bg-light-secondary dark:bg-dark-secondary" />
+                            <div
+                              onClick={() => {
+                                sendMessage(suggestion);
+                              }}
+                              className="cursor-pointer flex flex-row justify-between font-medium space-x-2 items-center"
+                            >
+                              <p className="transition duration-200 hover:text-[#24A0ED]">
+                                {suggestion}
+                              </p>
+                              <Plus
+                                size={20}
+                                className="text-[#24A0ED] flex-shrink-0"
+                              />
+                            </div>
+                          </div>
+                        ))}
+                      </div>
+                    </div>
+                  </>
+                )}
             </div>
           </div>
           <div className="lg:sticky lg:top-20 flex flex-col items-center space-y-3 w-full lg:w-3/12 z-30 h-full pb-4">

ui/components/MessageBoxLoading.tsx

@@ -1,9 +1,9 @@
 const MessageBoxLoading = () => {
   return (
-    <div className="flex flex-col space-y-2 w-full lg:w-9/12 bg-[#111111] animate-pulse rounded-lg p-3">
-      <div className="h-2 rounded-full w-full bg-[#1c1c1c]" />
-      <div className="h-2 rounded-full w-9/12 bg-[#1c1c1c]" />
-      <div className="h-2 rounded-full w-10/12 bg-[#1c1c1c]" />
+    <div className="flex flex-col space-y-2 w-full lg:w-9/12 bg-light-primary dark:bg-dark-primary animate-pulse rounded-lg py-3">
+      <div className="h-2 rounded-full w-full bg-light-secondary dark:bg-dark-secondary" />
+      <div className="h-2 rounded-full w-9/12 bg-light-secondary dark:bg-dark-secondary" />
+      <div className="h-2 rounded-full w-10/12 bg-light-secondary dark:bg-dark-secondary" />
     </div>
   );
 };

ui/components/MessageInput.tsx

@@ -1,8 +1,9 @@
 import { cn } from '@/lib/utils';
 import { ArrowUp } from 'lucide-react';
-import { useEffect, useState } from 'react';
+import { useEffect, useRef, useState } from 'react';
 import TextareaAutosize from 'react-textarea-autosize';
-import { Attach, CopilotToggle } from './MessageInputActions';
+import Attach from './MessageInputActions/Attach';
+import CopilotToggle from './MessageInputActions/Copilot';
 
 const MessageInput = ({
   sendMessage,
@@ -24,6 +25,23 @@ const MessageInput = ({
     }
   }, [textareaRows, mode, message]);
 
+  const inputRef = useRef<HTMLTextAreaElement | null>(null);
+
+  const handleKeyDown = (e: KeyboardEvent) => {
+    if (e.key === '/') {
+      e.preventDefault();
+      inputRef.current?.focus();
+    }
+  };
+
+  useEffect(() => {
+    document.addEventListener('keydown', handleKeyDown);
+
+    return () => {
+      document.removeEventListener('keydown', handleKeyDown);
+    };
+  }, []);
+
   return (
     <form
       onSubmit={(e) => {
@@ -40,18 +58,19 @@ const MessageInput = ({
         }
       }}
       className={cn(
-        'bg-[#111111] p-4 flex items-center overflow-hidden border border-[#1C1C1C]',
+        'bg-light-secondary dark:bg-dark-secondary p-4 flex items-center overflow-hidden border border-light-200 dark:border-dark-200',
         mode === 'multi' ? 'flex-col rounded-lg' : 'flex-row rounded-full',
       )}
     >
       {mode === 'single' && <Attach />}
       <TextareaAutosize
+        ref={inputRef}
         value={message}
         onChange={(e) => setMessage(e.target.value)}
         onHeightChange={(height, props) => {
           setTextareaRows(Math.ceil(height / props.rowHeight));
         }}
-        className="transition bg-transparent placeholder:text-white/50 placeholder:text-sm text-sm text-white resize-none focus:outline-none w-full px-2 max-h-24 lg:max-h-36 xl:max-h-48 flex-grow flex-shrink"
+        className="transition bg-transparent dark:placeholder:text-white/50 placeholder:text-sm text-sm dark:text-white resize-none focus:outline-none w-full px-2 max-h-24 lg:max-h-36 xl:max-h-48 flex-grow flex-shrink"
         placeholder="Ask a follow-up"
       />
       {mode === 'single' && (
@@ -62,7 +81,7 @@ const MessageInput = ({
           />
           <button
             disabled={message.trim().length === 0 || loading}
-            className="bg-[#24A0ED] text-white disabled:text-white/50 hover:bg-opacity-85 transition duration-100 disabled:bg-[#ececec21] rounded-full p-2"
+            className="bg-[#24A0ED] text-white disabled:text-black/50 dark:disabled:text-white/50 hover:bg-opacity-85 transition duration-100 disabled:bg-[#e0e0dc79] dark:disabled:bg-[#ececec21] rounded-full p-2"
           >
             <ArrowUp className="bg-background" size={17} />
           </button>
@@ -78,7 +97,7 @@ const MessageInput = ({
             />
             <button
               disabled={message.trim().length === 0 || loading}
-              className="bg-[#24A0ED] text-white disabled:text-white/50 hover:bg-opacity-85 transition duration-100 disabled:bg-[#ececec21] rounded-full p-2"
+              className="bg-[#24A0ED] text-white text-black/50 dark:disabled:text-white/50 hover:bg-opacity-85 transition duration-100 disabled:bg-[#e0e0dc79] dark:disabled:bg-[#ececec21] rounded-full p-2"
             >
               <ArrowUp className="bg-background" size={17} />
             </button>

ui/components/MessageInputActions/Attach.tsx

@@ -0,0 +1,14 @@
+import { CopyPlus } from 'lucide-react';
+
+const Attach = () => {
+  return (
+    <button
+      type="button"
+      className="p-2 text-black/50 dark:text-white/50 rounded-xl hover:bg-light-secondary dark:hover:bg-dark-secondary transition duration-200 hover:text-black dark:hover:text-white"
+    >
+      <CopyPlus />
+    </button>
+  );
+};
+
+export default Attach;

ui/components/MessageInputActions/Copilot.tsx

@@ -0,0 +1,43 @@
+import { cn } from '@/lib/utils';
+import { Switch } from '@headlessui/react';
+
+const CopilotToggle = ({
+  copilotEnabled,
+  setCopilotEnabled,
+}: {
+  copilotEnabled: boolean;
+  setCopilotEnabled: (enabled: boolean) => void;
+}) => {
+  return (
+    <div className="group flex flex-row items-center space-x-1 active:scale-95 duration-200 transition cursor-pointer">
+      <Switch
+        checked={copilotEnabled}
+        onChange={setCopilotEnabled}
+        className="bg-light-secondary dark:bg-dark-secondary border border-light-200/70 dark:border-dark-200 relative inline-flex h-5 w-10 sm:h-6 sm:w-11 items-center rounded-full"
+      >
+        <span className="sr-only">Copilot</span>
+        <span
+          className={cn(
+            copilotEnabled
+              ? 'translate-x-6 bg-[#24A0ED]'
+              : 'translate-x-1 bg-black/50 dark:bg-white/50',
+            'inline-block h-3 w-3 sm:h-4 sm:w-4 transform rounded-full transition-all duration-200',
+          )}
+        />
+      </Switch>
+      <p
+        onClick={() => setCopilotEnabled(!copilotEnabled)}
+        className={cn(
+          'text-xs font-medium transition-colors duration-150 ease-in-out',
+          copilotEnabled
+            ? 'text-[#24A0ED]'
+            : 'text-black/50 dark:text-white/50 group-hover:text-black dark:group-hover:text-white',
+        )}
+      >
+        Copilot
+      </p>
+    </div>
+  );
+};
+
+export default CopilotToggle;

ui/components/MessageInputActions/Focus.tsx

@@ -1,28 +1,16 @@
 import {
   BadgePercent,
   ChevronDown,
-  CopyPlus,
   Globe,
   Pencil,
   ScanEye,
   SwatchBook,
 } from 'lucide-react';
 import { cn } from '@/lib/utils';
-import { Popover, Switch, Transition } from '@headlessui/react';
+import { Popover, Transition } from '@headlessui/react';
 import { SiReddit, SiYoutube } from '@icons-pack/react-simple-icons';
 import { Fragment } from 'react';
 
-export const Attach = () => {
-  return (
-    <button
-      type="button"
-      className="p-2 text-white/50 rounded-xl hover:bg-[#1c1c1c] transition duration-200 hover:text-white"
-    >
-      <CopyPlus />
-    </button>
-  );
-};
-
 const focusModes = [
   {
     key: 'webSearch',
@@ -74,7 +62,7 @@ const focusModes = [
   },
 ];
 
-export const Focus = ({
+const Focus = ({
   focusMode,
   setFocusMode,
 }: {
@@ -85,7 +73,7 @@ export const Focus = ({
     <Popover className="fixed w-full max-w-[15rem] md:max-w-md lg:max-w-lg">
       <Popover.Button
         type="button"
-        className="p-2 text-white/50 rounded-xl hover:bg-[#1c1c1c] active:scale-95 transition duration-200 hover:text-white"
+        className="p-2 text-black/50 dark:text-white/50 rounded-xl hover:bg-light-secondary dark:hover:bg-dark-secondary active:scale-95 transition duration-200 hover:text-black dark:hover:text-white"
       >
         {focusMode !== 'webSearch' ? (
           <div className="flex flex-row items-center space-x-1">
@@ -109,7 +97,7 @@ export const Focus = ({
         leaveTo="opacity-0 translate-y-1"
       >
         <Popover.Panel className="absolute z-10 w-full">
-          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-1 bg-[#0A0A0A] border rounded-lg border-[#1c1c1c] w-full p-2 max-h-[200px] md:max-h-none overflow-y-auto">
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-1 bg-light-primary dark:bg-dark-primary border rounded-lg border-light-200 dark:border-dark-200 w-full p-2 max-h-[200px] md:max-h-none overflow-y-auto">
             {focusModes.map((mode, i) => (
               <Popover.Button
                 onClick={() => setFocusMode(mode.key)}
@@ -117,20 +105,24 @@ export const Focus = ({
                 className={cn(
                   'p-2 rounded-lg flex flex-col items-start justify-start text-start space-y-2 duration-200 cursor-pointer transition',
                   focusMode === mode.key
-                    ? 'bg-[#111111]'
-                    : 'hover:bg-[#111111]',
+                    ? 'bg-light-secondary dark:bg-dark-secondary'
+                    : 'hover:bg-light-secondary dark:hover:bg-dark-secondary',
                 )}
               >
                 <div
                   className={cn(
                     'flex flex-row items-center space-x-1',
-                    focusMode === mode.key ? 'text-[#24A0ED]' : 'text-white',
+                    focusMode === mode.key
+                      ? 'text-[#24A0ED]'
+                      : 'text-black dark:text-white',
                   )}
                 >
                   {mode.icon}
                   <p className="text-sm font-medium">{mode.title}</p>
                 </div>
-                <p className="text-white/70 text-xs">{mode.description}</p>
+                <p className="text-black/70 dark:text-white/70 text-xs">
+                  {mode.description}
+                </p>
               </Popover.Button>
             ))}
           </div>
@@ -140,41 +132,4 @@ export const Focus = ({
   );
 };
 
-export const CopilotToggle = ({
-  copilotEnabled,
-  setCopilotEnabled,
-}: {
-  copilotEnabled: boolean;
-  setCopilotEnabled: (enabled: boolean) => void;
-}) => {
-  return (
-    <div className="group flex flex-row items-center space-x-1 active:scale-95 duration-200 transition cursor-pointer">
-      <Switch
-        checked={copilotEnabled}
-        onChange={setCopilotEnabled}
-        className="bg-[#111111] border border-[#1C1C1C] relative inline-flex h-5 w-10 sm:h-6 sm:w-11 items-center rounded-full"
-      >
-        <span className="sr-only">Copilot</span>
-        <span
-          className={cn(
-            copilotEnabled
-              ? 'translate-x-6 bg-[#24A0ED]'
-              : 'translate-x-1 bg-white/50',
-            'inline-block h-3 w-3 sm:h-4 sm:w-4 transform rounded-full transition-all duration-200',
-          )}
-        />
-      </Switch>
-      <p
-        onClick={() => setCopilotEnabled(!copilotEnabled)}
-        className={cn(
-          'text-xs font-medium transition-colors duration-150 ease-in-out',
-          copilotEnabled
-            ? 'text-[#24A0ED]'
-            : 'text-white/50 group-hover:text-white',
-        )}
-      >
-        Copilot
-      </p>
-    </div>
-  );
-};
+export default Focus;

ui/components/MessageSources.tsx

@@ -20,12 +20,12 @@ const MessageSources = ({ sources }: { sources: Document[] }) => {
     <div className="grid grid-cols-2 lg:grid-cols-4 gap-2">
       {sources.slice(0, 3).map((source, i) => (
         <a
-          className="bg-[#111111] hover:bg-[#1c1c1c] transition duration-200 rounded-lg p-3 flex flex-col space-y-2 font-medium"
+          className="bg-light-100 hover:bg-light-200 dark:bg-dark-100 dark:hover:bg-dark-200 transition duration-200 rounded-lg p-3 flex flex-col space-y-2 font-medium"
           key={i}
           href={source.metadata.url}
           target="_blank"
         >
-          <p className="text-white text-xs overflow-hidden whitespace-nowrap text-ellipsis">
+          <p className="dark:text-white text-xs overflow-hidden whitespace-nowrap text-ellipsis">
             {source.metadata.title}
           </p>
           <div className="flex flex-row items-center justify-between">
@@ -37,12 +37,12 @@ const MessageSources = ({ sources }: { sources: Document[] }) => {
                 alt="favicon"
                 className="rounded-lg h-4 w-4"
               />
-              <p className="text-xs text-white/50 overflow-hidden whitespace-nowrap text-ellipsis">
+              <p className="text-xs text-black/50 dark:text-white/50 overflow-hidden whitespace-nowrap text-ellipsis">
                 {source.metadata.url.replace(/.+\/\/|www.|\..+/g, '')}
               </p>
             </div>
-            <div className="flex flex-row items-center space-x-1 text-white/50 text-xs">
-              <div className="bg-white/50 h-[4px] w-[4px] rounded-full" />
+            <div className="flex flex-row items-center space-x-1 text-black/50 dark:text-white/50 text-xs">
+              <div className="bg-black/50 dark:bg-white/50 h-[4px] w-[4px] rounded-full" />
               <span>{i + 1}</span>
             </div>
           </div>
@@ -51,7 +51,7 @@ const MessageSources = ({ sources }: { sources: Document[] }) => {
       {sources.length > 3 && (
         <button
           onClick={openModal}
-          className="bg-[#111111] hover:bg-[#1c1c1c] transition duration-200 rounded-lg px-4 py-2 flex flex-col justify-between space-y-2"
+          className="bg-light-100 hover:bg-light-200 dark:bg-dark-100 dark:hover:bg-dark-200 transition duration-200 rounded-lg p-3 flex flex-col space-y-2 font-medium"
         >
           <div className="flex flex-row items-center space-x-1">
             {sources.slice(3, 6).map((source, i) => (
@@ -65,7 +65,7 @@ const MessageSources = ({ sources }: { sources: Document[] }) => {
               />
             ))}
           </div>
-          <p className="text-xs text-white/50">
+          <p className="text-xs text-black/50 dark:text-white/50">
             View {sources.length - 3} more
           </p>
         </button>
@@ -83,19 +83,19 @@ const MessageSources = ({ sources }: { sources: Document[] }) => {
                 leaveFrom="opacity-100 scale-200"
                 leaveTo="opacity-0 scale-95"
               >
-                <Dialog.Panel className="w-full max-w-md transform rounded-2xl bg-[#111111] border border-[#1c1c1c] p-6 text-left align-middle shadow-xl transition-all">
-                  <Dialog.Title className="text-lg font-medium leading-6 text-white">
+                <Dialog.Panel className="w-full max-w-md transform rounded-2xl bg-light-secondary dark:bg-dark-secondary border border-light-200 dark:border-dark-200 p-6 text-left align-middle shadow-xl transition-all">
+                  <Dialog.Title className="text-lg font-medium leading-6 dark:text-white">
                     Sources
                   </Dialog.Title>
                   <div className="grid grid-cols-2 gap-2 overflow-auto max-h-[300px] mt-2 pr-2">
                     {sources.map((source, i) => (
                       <a
-                        className="bg-[#111111] hover:bg-[#1c1c1c] border border-[#1c1c1c] transition duration-200 rounded-lg p-3 flex flex-col space-y-2 font-medium"
+                        className="bg-light-secondary hover:bg-light-200 dark:bg-dark-secondary dark:hover:bg-dark-200 border border-light-200 dark:border-dark-200 transition duration-200 rounded-lg p-3 flex flex-col space-y-2 font-medium"
                         key={i}
                         href={source.metadata.url}
                         target="_blank"
                       >
-                        <p className="text-white text-xs overflow-hidden whitespace-nowrap text-ellipsis">
+                        <p className="dark:text-white text-xs overflow-hidden whitespace-nowrap text-ellipsis">
                           {source.metadata.title}
                         </p>
                         <div className="flex flex-row items-center justify-between">
@@ -107,15 +107,15 @@ const MessageSources = ({ sources }: { sources: Document[] }) => {
                               alt="favicon"
                               className="rounded-lg h-4 w-4"
                             />
-                            <p className="text-xs text-white/50 overflow-hidden whitespace-nowrap text-ellipsis">
+                            <p className="text-xs text-black/50 dark:text-white/50 overflow-hidden whitespace-nowrap text-ellipsis">
                               {source.metadata.url.replace(
                                 /.+\/\/|www.|\..+/g,
                                 '',
                               )}
                             </p>
                           </div>
-                          <div className="flex flex-row items-center space-x-1 text-white/50 text-xs">
-                            <div className="bg-white/50 h-[4px] w-[4px] rounded-full" />
+                          <div className="flex flex-row items-center space-x-1 text-black/50 dark:text-white/50 text-xs">
+                            <div className="bg-black/50 dark:bg-white/50 h-[4px] w-[4px] rounded-full" />
                             <span>{i + 1}</span>
                           </div>
                         </div>

ui/components/Navbar.tsx

@@ -38,7 +38,7 @@ const Navbar = ({ messages }: { messages: Message[] }) => {
   }, []);
 
   return (
-    <div className="fixed z-40 top-0 left-0 right-0 px-4 lg:pl-[104px] lg:pr-6 lg:px-8 flex flex-row items-center justify-between w-full py-4 text-sm text-white/70 border-b bg-[#0A0A0A] border-[#1C1C1C]">
+    <div className="fixed z-40 top-0 left-0 right-0 px-4 lg:pl-[104px] lg:pr-6 lg:px-8 flex flex-row items-center justify-between w-full py-4 text-sm text-black dark:text-white/70 border-b bg-light-primary dark:bg-dark-primary border-light-100 dark:border-dark-200">
       <Edit
         size={17}
         className="active:scale-95 transition duration-100 cursor-pointer lg:hidden"
@@ -48,6 +48,7 @@ const Navbar = ({ messages }: { messages: Message[] }) => {
         <p className="text-xs">{timeAgo} ago</p>
       </div>
       <p className="hidden lg:flex">{title}</p>
+
       <div className="flex flex-row items-center space-x-4">
         <Share
           size={17}

ui/components/SearchImages.tsx

@@ -62,7 +62,7 @@ const SearchImages = ({
             );
             setLoading(false);
           }}
-          className="border border-dashed border-[#1C1C1C] hover:bg-[#1c1c1c] active:scale-95 duration-200 transition px-4 py-2 flex flex-row items-center justify-between rounded-lg text-white text-sm w-full"
+          className="border border-dashed border-light-200 dark:border-dark-200 hover:bg-light-200 dark:hover:bg-dark-200 active:scale-95 duration-200 transition px-4 py-2 flex flex-row items-center justify-between rounded-lg dark:text-white text-sm w-full"
         >
           <div className="flex flex-row items-center space-x-2">
             <ImagesIcon size={17} />
@@ -76,7 +76,7 @@ const SearchImages = ({
           {[...Array(4)].map((_, i) => (
             <div
               key={i}
-              className="bg-[#1C1C1C] h-32 w-full rounded-lg animate-pulse aspect-video object-cover"
+              className="bg-light-secondary dark:bg-dark-secondary h-32 w-full rounded-lg animate-pulse aspect-video object-cover"
             />
           ))}
         </div>
@@ -120,7 +120,7 @@ const SearchImages = ({
             {images.length > 4 && (
               <button
                 onClick={() => setOpen(true)}
-                className="bg-[#111111] hover:bg-[#1c1c1c] transition duration-200 active:scale-95 hover:scale-[1.02] h-auto w-full rounded-lg flex flex-col justify-between text-white p-2"
+                className="bg-light-100 hover:bg-light-200 dark:bg-dark-100 dark:hover:bg-dark-200 transition duration-200 active:scale-95 hover:scale-[1.02] h-auto w-full rounded-lg flex flex-col justify-between text-white p-2"
               >
                 <div className="flex flex-row items-center space-x-1">
                   {images.slice(3, 6).map((image, i) => (
@@ -132,7 +132,7 @@ const SearchImages = ({
                     />
                   ))}
                 </div>
-                <p className="text-white/70 text-xs">
+                <p className="text-black/70 dark:text-white/70 text-xs">
                   View {images.length - 3} more
                 </p>
               </button>

ui/components/SearchVideos.tsx

@@ -77,7 +77,7 @@ const Searchvideos = ({
             );
             setLoading(false);
           }}
-          className="border border-dashed border-[#1C1C1C] hover:bg-[#1c1c1c] active:scale-95 duration-200 transition px-4 py-2 flex flex-row items-center justify-between rounded-lg text-white text-sm w-full"
+          className="border border-dashed border-light-200 dark:border-dark-200 hover:bg-light-200 dark:hover:bg-dark-200 active:scale-95 duration-200 transition px-4 py-2 flex flex-row items-center justify-between rounded-lg dark:text-white text-sm w-full"
         >
           <div className="flex flex-row items-center space-x-2">
             <VideoIcon size={17} />
@@ -91,7 +91,7 @@ const Searchvideos = ({
           {[...Array(4)].map((_, i) => (
             <div
               key={i}
-              className="bg-[#1C1C1C] h-32 w-full rounded-lg animate-pulse aspect-video object-cover"
+              className="bg-light-secondary dark:bg-dark-secondary h-32 w-full rounded-lg animate-pulse aspect-video object-cover"
             />
           ))}
         </div>
@@ -118,7 +118,7 @@ const Searchvideos = ({
                       alt={video.title}
                       className="relative h-full w-full aspect-video object-cover rounded-lg"
                     />
-                    <div className="absolute bg-black/70 text-white/70 px-2 py-1 flex flex-row items-center space-x-1 bottom-1 right-1 rounded-md">
+                    <div className="absolute bg-white/70 dark:bg-black/70 text-black/70 dark:text-white/70 px-2 py-1 flex flex-row items-center space-x-1 bottom-1 right-1 rounded-md">
                       <PlayCircle size={15} />
                       <p className="text-xs">Video</p>
                     </div>
@@ -142,7 +142,7 @@ const Searchvideos = ({
                       alt={video.title}
                       className="relative h-full w-full aspect-video object-cover rounded-lg"
                     />
-                    <div className="absolute bg-black/70 text-white/70 px-2 py-1 flex flex-row items-center space-x-1 bottom-1 right-1 rounded-md">
+                    <div className="absolute bg-white/70 dark:bg-black/70 text-black/70 dark:text-white/70 px-2 py-1 flex flex-row items-center space-x-1 bottom-1 right-1 rounded-md">
                       <PlayCircle size={15} />
                       <p className="text-xs">Video</p>
                     </div>
@@ -151,7 +151,7 @@ const Searchvideos = ({
             {videos.length > 4 && (
               <button
                 onClick={() => setOpen(true)}
-                className="bg-[#111111] hover:bg-[#1c1c1c] transition duration-200 active:scale-95 hover:scale-[1.02] h-auto w-full rounded-lg flex flex-col justify-between text-white p-2"
+                className="bg-light-100 hover:bg-light-200 dark:bg-dark-100 dark:hover:bg-dark-200 transition duration-200 active:scale-95 hover:scale-[1.02] h-auto w-full rounded-lg flex flex-col justify-between text-white p-2"
               >
                 <div className="flex flex-row items-center space-x-1">
                   {videos.slice(3, 6).map((video, i) => (
@@ -163,7 +163,7 @@ const Searchvideos = ({
                     />
                   ))}
                 </div>
-                <p className="text-white/70 text-xs">
+                <p className="text-black/70 dark:text-white/70 text-xs">
                   View {videos.length - 3} more
                 </p>
               </button>

ui/components/SettingsDialog.tsx

@@ -1,6 +1,51 @@
+import { cn } from '@/lib/utils';
 import { Dialog, Transition } from '@headlessui/react';
 import { CloudUpload, RefreshCcw, RefreshCw } from 'lucide-react';
-import React, { Fragment, useEffect, useState } from 'react';
+import React, {
+  Fragment,
+  useEffect,
+  useState,
+  type SelectHTMLAttributes,
+} from 'react';
+import ThemeSwitcher from './theme/Switcher';
+
+interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {}
+
+const Input = ({ className, ...restProps }: InputProps) => {
+  return (
+    <input
+      {...restProps}
+      className={cn(
+        'bg-light-secondary dark:bg-dark-secondary px-3 py-2 flex items-center overflow-hidden border border-light-200 dark:border-dark-200 dark:text-white rounded-lg text-sm',
+        className,
+      )}
+    />
+  );
+};
+
+interface SelectProps extends SelectHTMLAttributes<HTMLSelectElement> {
+  options: { value: string; label: string; disabled?: boolean }[];
+}
+
+export const Select = ({ className, options, ...restProps }: SelectProps) => {
+  return (
+    <select
+      {...restProps}
+      className={cn(
+        'bg-light-secondary dark:bg-dark-secondary px-3 py-2 flex items-center overflow-hidden border border-light-200 dark:border-dark-200 dark:text-white rounded-lg text-sm',
+        className,
+      )}
+    >
+      {options.map(({ label, value, disabled }) => {
+        return (
+          <option key={value} value={value} disabled={disabled}>
+            {label}
+          </option>
+        );
+      })}
+    </select>
+  );
+};
 
 interface SettingsType {
   chatModelProviders: {
@@ -11,6 +56,7 @@ interface SettingsType {
   };
   openaiApiKey: string;
   groqApiKey: string;
+  anthropicApiKey: string;
   ollamaApiUrl: string;
 }
 
@@ -33,12 +79,8 @@ const SettingsDialog = ({
   const [selectedEmbeddingModel, setSelectedEmbeddingModel] = useState<
     string | null
   >(null);
-  const [customOpenAIApiKey, setCustomOpenAIApiKey] = useState<string | null>(
-    null,
-  );
-  const [customOpenAIBaseURL, setCustomOpenAIBaseURL] = useState<string | null>(
-    null,
-  );
+  const [customOpenAIApiKey, setCustomOpenAIApiKey] = useState<string>('');
+  const [customOpenAIBaseURL, setCustomOpenAIBaseURL] = useState<string>('');
   const [isLoading, setIsLoading] = useState(false);
   const [isUpdating, setIsUpdating] = useState(false);
 
@@ -51,8 +93,49 @@ const SettingsDialog = ({
             'Content-Type': 'application/json',
           },
         });
-        const data = await res.json();
+
+        const data = (await res.json()) as SettingsType;
         setConfig(data);
+
+        const chatModelProvidersKeys = Object.keys(
+          data.chatModelProviders || {},
+        );
+        const embeddingModelProvidersKeys = Object.keys(
+          data.embeddingModelProviders || {},
+        );
+
+        const defaultChatModelProvider =
+          chatModelProvidersKeys.length > 0 ? chatModelProvidersKeys[0] : '';
+        const defaultEmbeddingModelProvider =
+          embeddingModelProvidersKeys.length > 0
+            ? embeddingModelProvidersKeys[0]
+            : '';
+
+        const chatModelProvider =
+          localStorage.getItem('chatModelProvider') ||
+          defaultChatModelProvider ||
+          '';
+        const chatModel =
+          localStorage.getItem('chatModel') ||
+          (data.chatModelProviders &&
+            data.chatModelProviders[chatModelProvider]?.[0]) ||
+          '';
+        const embeddingModelProvider =
+          localStorage.getItem('embeddingModelProvider') ||
+          defaultEmbeddingModelProvider ||
+          '';
+        const embeddingModel =
+          localStorage.getItem('embeddingModel') ||
+          (data.embeddingModelProviders &&
+            data.embeddingModelProviders[embeddingModelProvider]?.[0]) ||
+          '';
+
+        setSelectedChatModelProvider(chatModelProvider);
+        setSelectedChatModel(chatModel);
+        setSelectedEmbeddingModelProvider(embeddingModelProvider);
+        setSelectedEmbeddingModel(embeddingModel);
+        setCustomOpenAIApiKey(localStorage.getItem('openAIApiKey') || '');
+        setCustomOpenAIBaseURL(localStorage.getItem('openAIBaseURL') || '');
         setIsLoading(false);
       };
 
@@ -61,17 +144,6 @@ const SettingsDialog = ({
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [isOpen]);
 
-  useEffect(() => {
-    setSelectedChatModelProvider(localStorage.getItem('chatModelProvider'));
-    setSelectedChatModel(localStorage.getItem('chatModel'));
-    setSelectedEmbeddingModelProvider(
-      localStorage.getItem('embeddingModelProvider'),
-    );
-    setSelectedEmbeddingModel(localStorage.getItem('embeddingModel'));
-    setCustomOpenAIApiKey(localStorage.getItem('openAIApiKey'));
-    setCustomOpenAIBaseURL(localStorage.getItem('openAIBaseUrl'));
-  }, []);
-
   const handleSubmit = async () => {
     setIsUpdating(true);
 
@@ -119,7 +191,7 @@ const SettingsDialog = ({
           leaveFrom="opacity-100"
           leaveTo="opacity-0"
         >
-          <div className="fixed inset-0 bg-black/50" />
+          <div className="fixed inset-0 bg-white/50 dark:bg-black/50" />
         </Transition.Child>
         <div className="fixed inset-0 overflow-y-auto">
           <div className="flex min-h-full items-center justify-center p-4 text-center">
@@ -132,124 +204,128 @@ const SettingsDialog = ({
               leaveFrom="opacity-100 scale-200"
               leaveTo="opacity-0 scale-95"
             >
-              <Dialog.Panel className="w-full max-w-md transform rounded-2xl bg-[#111111] border border-[#1c1c1c] p-6 text-left align-middle shadow-xl transition-all">
-                <Dialog.Title className="text-xl font-medium leading-6 text-white">
+              <Dialog.Panel className="w-full max-w-md transform rounded-2xl bg-light-secondary dark:bg-dark-secondary border border-light-200 dark:border-dark-200 p-6 text-left align-middle shadow-xl transition-all">
+                <Dialog.Title className="text-xl font-medium leading-6 dark:text-white">
                   Settings
                 </Dialog.Title>
                 {config && !isLoading && (
                   <div className="flex flex-col space-y-4 mt-6">
+                    <div className="flex flex-col space-y-1">
+                      <p className="text-black/70 dark:text-white/70 text-sm">
+                        Theme
+                      </p>
+                      <ThemeSwitcher />
+                    </div>
                     {config.chatModelProviders && (
                       <div className="flex flex-col space-y-1">
-                        <p className="text-white/70 text-sm">
+                        <p className="text-black/70 dark:text-white/70 text-sm">
                           Chat model Provider
                         </p>
-                        <select
+                        <Select
+                          value={selectedChatModelProvider ?? undefined}
                           onChange={(e) => {
                             setSelectedChatModelProvider(e.target.value);
-                            setSelectedChatModel(
-                              config.chatModelProviders[e.target.value][0],
-                            );
+                            if (e.target.value === 'custom_openai') {
+                              setSelectedChatModel('');
+                            } else {
+                              setSelectedChatModel(
+                                config.chatModelProviders[e.target.value][0],
+                              );
+                            }
                           }}
-                          className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
-                        >
-                          {Object.keys(config.chatModelProviders).map(
-                            (provider) => (
-                              <option
-                                key={provider}
-                                value={provider}
-                                selected={
-                                  provider === selectedChatModelProvider
-                                }
-                              >
-                                {provider.charAt(0).toUpperCase() +
-                                  provider.slice(1)}
-                              </option>
-                            ),
+                          options={Object.keys(config.chatModelProviders).map(
+                            (provider) => ({
+                              value: provider,
+                              label:
+                                provider.charAt(0).toUpperCase() +
+                                provider.slice(1),
+                            }),
                           )}
-                        </select>
+                        />
                       </div>
                     )}
                     {selectedChatModelProvider &&
                       selectedChatModelProvider != 'custom_openai' && (
                         <div className="flex flex-col space-y-1">
-                          <p className="text-white/70 text-sm">Chat Model</p>
-                          <select
+                          <p className="text-black/70 dark:text-white/70 text-sm">
+                            Chat Model
+                          </p>
+                          <Select
+                            value={selectedChatModel ?? undefined}
                             onChange={(e) =>
                               setSelectedChatModel(e.target.value)
                             }
-                            className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
-                          >
-                            {config.chatModelProviders[
-                              selectedChatModelProvider
-                            ] ? (
-                              config.chatModelProviders[
-                                selectedChatModelProvider
-                              ].length > 0 ? (
+                            options={(() => {
+                              const chatModelProvider =
                                 config.chatModelProviders[
                                   selectedChatModelProvider
-                                ].map((model) => (
-                                  <option
-                                    key={model}
-                                    value={model}
-                                    selected={model === selectedChatModel}
-                                  >
-                                    {model}
-                                  </option>
-                                ))
-                              ) : (
-                                <option value="" disabled selected>
-                                  No models available
-                                </option>
-                              )
-                            ) : (
-                              <option value="" disabled selected>
-                                Invalid provider, please check backend logs
-                              </option>
-                            )}
-                          </select>
+                                ];
+
+                              return chatModelProvider
+                                ? chatModelProvider.length > 0
+                                  ? chatModelProvider.map((model) => ({
+                                      value: model,
+                                      label: model,
+                                    }))
+                                  : [
+                                      {
+                                        value: '',
+                                        label: 'No models available',
+                                        disabled: true,
+                                      },
+                                    ]
+                                : [
+                                    {
+                                      value: '',
+                                      label:
+                                        'Invalid provider, please check backend logs',
+                                      disabled: true,
+                                    },
+                                  ];
+                            })()}
+                          />
                         </div>
                       )}
                     {selectedChatModelProvider &&
                       selectedChatModelProvider === 'custom_openai' && (
                         <>
                           <div className="flex flex-col space-y-1">
-                            <p className="text-white/70 text-sm">Model name</p>
-                            <input
+                            <p className="text-black/70 dark:text-white/70 text-sm">
+                              Model name
+                            </p>
+                            <Input
                               type="text"
                               placeholder="Model name"
                               defaultValue={selectedChatModel!}
                               onChange={(e) =>
                                 setSelectedChatModel(e.target.value)
                               }
-                              className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
                             />
                           </div>
                           <div className="flex flex-col space-y-1">
-                            <p className="text-white/70 text-sm">
-                              Custom OpenAI API Key (optional)
+                            <p className="text-black/70 dark:text-white/70 text-sm">
+                              Custom OpenAI API Key
                             </p>
-                            <input
+                            <Input
                               type="text"
                               placeholder="Custom OpenAI API Key"
                               defaultValue={customOpenAIApiKey!}
                               onChange={(e) =>
                                 setCustomOpenAIApiKey(e.target.value)
                               }
-                              className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
                             />
                           </div>
                           <div className="flex flex-col space-y-1">
-                            <p className="text-white/70 text-sm">
+                            <p className="text-black/70 dark:text-white/70 text-sm">
                               Custom OpenAI Base URL
                             </p>
-                            <input
+                            <Input
                               type="text"
                               placeholder="Custom OpenAI Base URL"
                               defaultValue={customOpenAIBaseURL!}
                               onChange={(e) =>
                                 setCustomOpenAIBaseURL(e.target.value)
                               }
-                              className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
                             />
                           </div>
                         </>
@@ -257,77 +333,74 @@ const SettingsDialog = ({
                     {/* Embedding models */}
                     {config.embeddingModelProviders && (
                       <div className="flex flex-col space-y-1">
-                        <p className="text-white/70 text-sm">
+                        <p className="text-black/70 dark:text-white/70 text-sm">
                           Embedding model Provider
                         </p>
-                        <select
+                        <Select
+                          value={selectedEmbeddingModelProvider ?? undefined}
                           onChange={(e) => {
                             setSelectedEmbeddingModelProvider(e.target.value);
                             setSelectedEmbeddingModel(
                               config.embeddingModelProviders[e.target.value][0],
                             );
                           }}
-                          className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
-                        >
-                          {Object.keys(config.embeddingModelProviders).map(
-                            (provider) => (
-                              <option
-                                key={provider}
-                                value={provider}
-                                selected={
-                                  provider === selectedEmbeddingModelProvider
-                                }
-                              >
-                                {provider.charAt(0).toUpperCase() +
-                                  provider.slice(1)}
-                              </option>
-                            ),
-                          )}
-                        </select>
+                          options={Object.keys(
+                            config.embeddingModelProviders,
+                          ).map((provider) => ({
+                            label:
+                              provider.charAt(0).toUpperCase() +
+                              provider.slice(1),
+                            value: provider,
+                          }))}
+                        />
                       </div>
                     )}
                     {selectedEmbeddingModelProvider && (
                       <div className="flex flex-col space-y-1">
-                        <p className="text-white/70 text-sm">Embedding Model</p>
-                        <select
+                        <p className="text-black/70 dark:text-white/70 text-sm">
+                          Embedding Model
+                        </p>
+                        <Select
+                          value={selectedEmbeddingModel ?? undefined}
                           onChange={(e) =>
                             setSelectedEmbeddingModel(e.target.value)
                           }
-                          className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
-                        >
-                          {config.embeddingModelProviders[
-                            selectedEmbeddingModelProvider
-                          ] ? (
-                            config.embeddingModelProviders[
-                              selectedEmbeddingModelProvider
-                            ].length > 0 ? (
+                          options={(() => {
+                            const embeddingModelProvider =
                               config.embeddingModelProviders[
                                 selectedEmbeddingModelProvider
-                              ].map((model) => (
-                                <option
-                                  key={model}
-                                  value={model}
-                                  selected={model === selectedEmbeddingModel}
-                                >
-                                  {model}
-                                </option>
-                              ))
-                            ) : (
-                              <option value="" disabled selected>
-                                No embedding models available
-                              </option>
-                            )
-                          ) : (
-                            <option value="" disabled selected>
-                              Invalid provider, please check backend logs
-                            </option>
-                          )}
-                        </select>
+                              ];
+
+                            return embeddingModelProvider
+                              ? embeddingModelProvider.length > 0
+                                ? embeddingModelProvider.map((model) => ({
+                                    label: model,
+                                    value: model,
+                                  }))
+                                : [
+                                    {
+                                      label: 'No embedding models available',
+                                      value: '',
+                                      disabled: true,
+                                    },
+                                  ]
+                              : [
+                                  {
+                                    label:
+                                      'Invalid provider, please check backend logs',
+                                    value: '',
+                                    disabled: true,
+                                  },
+                                ];
+                          })()}
+                        />
                       </div>
                     )}
                     <div className="flex flex-col space-y-1">
-                      <p className="text-white/70 text-sm">OpenAI API Key</p>
-                      <input
+                      <p className="text-black/70 dark:text-white/70 text-sm">
+                        OpenAI API Key
+                      </p>
+                      <Input
                         type="text"
                         placeholder="OpenAI API Key"
                         defaultValue={config.openaiApiKey}
@@ -337,12 +410,13 @@ const SettingsDialog = ({
                             openaiApiKey: e.target.value,
                           })
                         }
-                        className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
                       />
                     </div>
                     <div className="flex flex-col space-y-1">
-                      <p className="text-white/70 text-sm">Ollama API URL</p>
-                      <input
+                      <p className="text-black/70 dark:text-white/70 text-sm">
+                        Ollama API URL
+                      </p>
+                      <Input
                         type="text"
                         placeholder="Ollama API URL"
                         defaultValue={config.ollamaApiUrl}
@@ -352,12 +426,13 @@ const SettingsDialog = ({
                             ollamaApiUrl: e.target.value,
                           })
                         }
-                        className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
                       />
                     </div>
                     <div className="flex flex-col space-y-1">
-                      <p className="text-white/70 text-sm">GROQ API Key</p>
-                      <input
+                      <p className="text-black/70 dark:text-white/70 text-sm">
+                        GROQ API Key
+                      </p>
+                      <Input
                         type="text"
                         placeholder="GROQ API Key"
                         defaultValue={config.groqApiKey}
@@ -367,18 +442,33 @@ const SettingsDialog = ({
                             groqApiKey: e.target.value,
                           })
                         }
-                        className="bg-[#111111] px-3 py-2 flex items-center overflow-hidden border border-[#1C1C1C] text-white rounded-lg text-sm"
+                      />
+                    </div>
+                    <div className="flex flex-col space-y-1">
+                      <p className="text-black/70 dark:text-white/70 text-sm">
+                        Anthropic API Key
+                      </p>
+                      <Input
+                        type="text"
+                        placeholder="Anthropic API key"
+                        defaultValue={config.anthropicApiKey}
+                        onChange={(e) =>
+                          setConfig({
+                            ...config,
+                            anthropicApiKey: e.target.value,
+                          })
+                        }
                       />
                     </div>
                   </div>
                 )}
                 {isLoading && (
-                  <div className="w-full flex items-center justify-center mt-6 text-white/70 py-6">
+                  <div className="w-full flex items-center justify-center mt-6 text-black/70 dark:text-white/70 py-6">
                     <RefreshCcw className="animate-spin" />
                   </div>
                 )}
                 <div className="w-full mt-6 space-y-2">
-                  <p className="text-xs text-white/50">
+                  <p className="text-xs text-black/50 dark:text-white/50">
                     We&apos;ll refresh the page after updating the settings.
                   </p>
                   <button

ui/components/Sidebar.tsx

@@ -4,11 +4,16 @@ import { cn } from '@/lib/utils';
 import { BookOpenText, Home, Search, SquarePen, Settings } from 'lucide-react';
 import Link from 'next/link';
 import { useSelectedLayoutSegments } from 'next/navigation';
-import React, { Fragment, useState } from 'react';
+import React, { useState, type ReactNode } from 'react';
 import Layout from './Layout';
-import { Dialog, Transition } from '@headlessui/react';
 import SettingsDialog from './SettingsDialog';
 
+const VerticalIconContainer = ({ children }: { children: ReactNode }) => {
+  return (
+    <div className="flex flex-col items-center gap-y-3 w-full">{children}</div>
+  );
+};
+
 const Sidebar = ({ children }: { children: React.ReactNode }) => {
   const segments = useSelectedLayoutSegments();
 
@@ -18,7 +23,7 @@ const Sidebar = ({ children }: { children: React.ReactNode }) => {
     {
       icon: Home,
       href: '/',
-      active: segments.length === 0,
+      active: segments.length === 0 || segments.includes('c'),
       label: 'Home',
     },
     {
@@ -38,31 +43,35 @@ const Sidebar = ({ children }: { children: React.ReactNode }) => {
   return (
     <div>
       <div className="hidden lg:fixed lg:inset-y-0 lg:z-50 lg:flex lg:w-20 lg:flex-col">
-        <div className="flex grow flex-col items-center justify-between gap-y-5 overflow-y-auto bg-[#111111] px-2 py-8">
+        <div className="flex grow flex-col items-center justify-between gap-y-5 overflow-y-auto bg-light-secondary dark:bg-dark-secondary px-2 py-8">
           <a href="/">
-            <SquarePen className="text-white cursor-pointer" />
+            <SquarePen className="cursor-pointer" />
           </a>
-          <div className="flex flex-col items-center gap-y-3 w-full">
+          <VerticalIconContainer>
             {navLinks.map((link, i) => (
               <Link
                 key={i}
                 href={link.href}
                 className={cn(
-                  'relative flex flex-row items-center justify-center cursor-pointer hover:bg-white/10 hover:text-white duration-150 transition w-full py-2 rounded-lg',
-                  link.active ? 'text-white' : 'text-white/70',
+                  'relative flex flex-row items-center justify-center cursor-pointer hover:bg-black/10 dark:hover:bg-white/10 duration-150 transition w-full py-2 rounded-lg',
+                  link.active
+                    ? 'text-black dark:text-white'
+                    : 'text-black/70 dark:text-white/70',
                 )}
               >
                 <link.icon />
                 {link.active && (
-                  <div className="absolute right-0 -mr-2 h-full w-1 rounded-l-lg bg-white" />
+                  <div className="absolute right-0 -mr-2 h-full w-1 rounded-l-lg bg-black dark:bg-white" />
                 )}
               </Link>
             ))}
-          </div>
+          </VerticalIconContainer>
+
           <Settings
             onClick={() => setIsSettingsOpen(!isSettingsOpen)}
-            className="text-white cursor-pointer"
+            className="cursor-pointer"
           />
+
           <SettingsDialog
             isOpen={isSettingsOpen}
             setIsOpen={setIsSettingsOpen}
@@ -70,18 +79,20 @@ const Sidebar = ({ children }: { children: React.ReactNode }) => {
         </div>
       </div>
 
-      <div className="fixed bottom-0 w-full z-50 flex flex-row items-center gap-x-6 bg-[#111111] px-4 py-4 shadow-sm lg:hidden">
+      <div className="fixed bottom-0 w-full z-50 flex flex-row items-center gap-x-6 bg-light-primary dark:bg-dark-primary px-4 py-4 shadow-sm lg:hidden">
         {navLinks.map((link, i) => (
           <Link
             href={link.href}
             key={i}
             className={cn(
               'relative flex flex-col items-center space-y-1 text-center w-full',
-              link.active ? 'text-white' : 'text-white/70',
+              link.active
+                ? 'text-black dark:text-white'
+                : 'text-black dark:text-white/70',
             )}
           >
             {link.active && (
-              <div className="absolute top-0 -mt-4 h-1 w-full rounded-b-lg bg-white" />
+              <div className="absolute top-0 -mt-4 h-1 w-full rounded-b-lg bg-black dark:bg-white" />
             )}
             <link.icon />
             <p className="text-xs">{link.label}</p>

ui/components/theme/Provider.tsx

@@ -0,0 +1,16 @@
+'use client';
+import { ThemeProvider } from 'next-themes';
+
+const ThemeProviderComponent = ({
+  children,
+}: {
+  children: React.ReactNode;
+}) => {
+  return (
+    <ThemeProvider attribute="class" enableSystem={false} defaultTheme="dark">
+      {children}
+    </ThemeProvider>
+  );
+};
+
+export default ThemeProviderComponent;

ui/components/theme/Switcher.tsx

@@ -0,0 +1,61 @@
+'use client';
+import { useTheme } from 'next-themes';
+import { SunIcon, MoonIcon, MonitorIcon } from 'lucide-react';
+import { useCallback, useEffect, useState } from 'react';
+import { Select } from '../SettingsDialog';
+
+type Theme = 'dark' | 'light' | 'system';
+
+const ThemeSwitcher = ({ className }: { className?: string }) => {
+  const [mounted, setMounted] = useState(false);
+
+  const { theme, setTheme } = useTheme();
+
+  const isTheme = useCallback((t: Theme) => t === theme, [theme]);
+
+  const handleThemeSwitch = (theme: Theme) => {
+    setTheme(theme);
+  };
+
+  useEffect(() => {
+    setMounted(true);
+  }, []);
+
+  useEffect(() => {
+    if (isTheme('system')) {
+      const preferDarkScheme = window.matchMedia(
+        '(prefers-color-scheme: dark)',
+      );
+
+      const detectThemeChange = (event: MediaQueryListEvent) => {
+        const theme: Theme = event.matches ? 'dark' : 'light';
+        setTheme(theme);
+      };
+
+      preferDarkScheme.addEventListener('change', detectThemeChange);
+
+      return () => {
+        preferDarkScheme.removeEventListener('change', detectThemeChange);
+      };
+    }
+  }, [isTheme, setTheme, theme]);
+
+  // Avoid Hydration Mismatch
+  if (!mounted) {
+    return null;
+  }
+
+  return (
+    <Select
+      className={className}
+      value={theme}
+      onChange={(e) => handleThemeSwitch(e.target.value as Theme)}
+      options={[
+        { value: 'light', label: 'Light' },
+        { value: 'dark', label: 'Dark' },
+      ]}
+    />
+  );
+};
+
+export default ThemeSwitcher;

ui/lib/actions.ts

@@ -0,0 +1,22 @@
+import { Message } from '@/components/ChatWindow';
+
+export const getSuggestions = async (chatHisory: Message[]) => {
+  const chatModel = localStorage.getItem('chatModel');
+  const chatModelProvider = localStorage.getItem('chatModelProvider');
+
+  const res = await fetch(`${process.env.NEXT_PUBLIC_API_URL}/suggestions`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({
+      chat_history: chatHisory,
+      chat_model: chatModel,
+      chat_model_provider: chatModelProvider,
+    }),
+  });
+
+  const data = (await res.json()) as { suggestions: string[] };
+
+  return data.suggestions;
+};

ui/lib/utils.ts

@@ -3,7 +3,13 @@ import { twMerge } from 'tailwind-merge';
 
 export const cn = (...classes: ClassValue[]) => twMerge(clsx(...classes));
 
-export const formatTimeDifference = (date1: Date, date2: Date): string => {
+export const formatTimeDifference = (
+  date1: Date | string,
+  date2: Date | string,
+): string => {
+  date1 = new Date(date1);
+  date2 = new Date(date2);
+
   const diffInSeconds = Math.floor(
     Math.abs(date2.getTime() - date1.getTime()) / 1000,
   );

ui/package.json

@@ -1,6 +1,6 @@
 {
   "name": "perplexica-frontend",
-  "version": "1.3.2",
+  "version": "1.9.0-rc2",
   "license": "MIT",
   "author": "ItzCrazyKns",
   "scripts": {
@@ -20,6 +20,7 @@
     "lucide-react": "^0.363.0",
     "markdown-to-jsx": "^7.4.5",
     "next": "14.1.4",
+    "next-themes": "^0.3.0",
     "react": "^18",
     "react-dom": "^18",
     "react-text-to-speech": "^0.14.5",

ui/tailwind.config.ts

@@ -1,4 +1,17 @@
 import type { Config } from 'tailwindcss';
+import type { DefaultColors } from 'tailwindcss/types/generated/colors';
+
+const themeDark = (colors: DefaultColors) => ({
+  50: '#0a0a0a',
+  100: '#111111',
+  200: '#1c1c1c',
+});
+
+const themeLight = (colors: DefaultColors) => ({
+  50: '#fcfcf9',
+  100: '#f3f3ee',
+  200: '#e8e8e3',
+});
 
 const config: Config = {
   content: [
@@ -6,8 +19,33 @@ const config: Config = {
     './components/**/*.{js,ts,jsx,tsx,mdx}',
     './app/**/*.{js,ts,jsx,tsx,mdx}',
   ],
+  darkMode: 'class',
   theme: {
-    extend: {},
+    extend: {
+      borderColor: ({ colors }) => {
+        return {
+          light: themeLight(colors),
+          dark: themeDark(colors),
+        };
+      },
+      colors: ({ colors }) => {
+        const colorsDark = themeDark(colors);
+        const colorsLight = themeLight(colors);
+
+        return {
+          dark: {
+            primary: colorsDark[50],
+            secondary: colorsDark[100],
+            ...colorsDark,
+          },
+          light: {
+            primary: colorsLight[50],
+            secondary: colorsLight[100],
+            ...colorsLight,
+          },
+        };
+      },
+    },
   },
   plugins: [require('@tailwindcss/typography')],
 };

ui/yarn.lock

@@ -2244,6 +2244,11 @@ natural-compare@^1.4.0:
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
   integrity sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==
 
+next-themes@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/next-themes/-/next-themes-0.3.0.tgz#b4d2a866137a67d42564b07f3a3e720e2ff3871a"
+  integrity sha512-/QHIrsYpd6Kfk7xakK4svpDI5mmXP0gfvCoJdGpZQ2TOrQZmsW0QxjaiLn8wbIKjtm4BTSqLoix4lxYYOnLJ/w==
+
 next@14.1.4:
   version "14.1.4"
   resolved "https://registry.yarnpkg.com/next/-/next-14.1.4.tgz#203310f7310578563fd5c961f0db4729ce7a502d"
@@ -2854,8 +2859,16 @@ streamsearch@^1.1.0:
   resolved "https://registry.yarnpkg.com/streamsearch/-/streamsearch-1.1.0.tgz#404dd1e2247ca94af554e841a8ef0eaa238da764"
   integrity sha512-Mcc5wHehp9aXz1ax6bZUyY5afg9u2rv5cqQI3mRrYkGC8rW2hM02jWuwjtL++LS5qinSyhj2QfLyNsuc+VsExg==
 
-"string-width-cjs@npm:string-width@^4.2.0", string-width@^4.1.0:
-  name string-width-cjs
+"string-width-cjs@npm:string-width@^4.2.0":
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
+  integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.1"
+
+string-width@^4.1.0:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
   integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
@@ -2919,7 +2932,14 @@ string.prototype.trimstart@^1.0.8:
     define-properties "^1.2.1"
     es-object-atoms "^1.0.0"
 
-"strip-ansi-cjs@npm:strip-ansi@^6.0.1", strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+"strip-ansi-cjs@npm:strip-ansi@^6.0.1":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
+  integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
+  dependencies:
+    ansi-regex "^5.0.1"
+
+strip-ansi@^6.0.0, strip-ansi@^6.0.1:
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
   integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==