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feat(chat-hook): handle messages as separate entities

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ItzCrazyKns
2025-08-29 12:45:13 +05:30
parent 34fa52ad12
commit d6b02db37a
1 changed files with 209 additions and 47 deletions
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256
src/lib/hooks/useChat.tsx
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@@ -1,15 +1,40 @@
'use client';
import { Message } from '@/components/ChatWindow';
import { createContext, useContext, useEffect, useRef, useState } from 'react';
import {
AssistantMessage,
ChatTurn,
Message,
SourceMessage,
SuggestionMessage,
UserMessage,
} from '@/components/ChatWindow';
import {
createContext,
useContext,
useEffect,
useMemo,
useRef,
useState,
} from 'react';
import crypto from 'crypto';
import { useSearchParams } from 'next/navigation';
import { toast } from 'sonner';
import { Document } from '@langchain/core/documents';
import { getSuggestions } from '../actions';
export type Section = {
userMessage: UserMessage;
assistantMessage: AssistantMessage | undefined;
parsedAssistantMessage: string | undefined;
speechMessage: string | undefined;
sourceMessage: SourceMessage | undefined;
thinkingEnded: boolean;
suggestions?: string[];
};
type ChatContext = {
messages: Message[];
chatTurns: ChatTurn[];
sections: Section[];
chatHistory: [string, string][];
files: File[];
fileIds: string[];
@@ -242,22 +267,23 @@ const loadMessages = async (
const data = await res.json();
const messages = data.messages.map((msg: any) => {
return {
...msg,
...JSON.parse(msg.metadata),
};
}) as Message[];
const messages = data.messages as Message[];
setMessages(messages);
const history = messages.map((msg) => {
const chatTurns = messages.filter(
(msg): msg is ChatTurn => msg.role === 'user' || msg.role === 'assistant',
);
const history = chatTurns.map((msg) => {
return [msg.role, msg.content];
}) as [string, string][];
console.debug(new Date(), 'app:messages_loaded');
document.title = messages[0].content;
if (chatTurns.length > 0) {
document.title = chatTurns[0].content;
}
const files = data.chat.files.map((file: any) => {
return {
@@ -287,6 +313,8 @@ export const chatContext = createContext<ChatContext>({
loading: false,
messageAppeared: false,
messages: [],
chatTurns: [],
sections: [],
notFound: false,
optimizationMode: '',
rewrite: () => {},
@@ -345,6 +373,122 @@ export const ChatProvider = ({
const messagesRef = useRef<Message[]>([]);
const chatTurns = useMemo((): ChatTurn[] => {
return messages.filter(
(msg): msg is ChatTurn => msg.role === 'user' || msg.role === 'assistant',
);
}, [messages]);
const sections = useMemo<Section[]>(() => {
const sections: Section[] = [];
messages.forEach((msg, i) => {
if (msg.role === 'user') {
const nextUserMessageIndex = messages.findIndex(
(m, j) => j > i && m.role === 'user',
);
const aiMessage = messages.find(
(m, j) =>
j > i &&
m.role === 'assistant' &&
(nextUserMessageIndex === -1 || j < nextUserMessageIndex),
) as AssistantMessage | undefined;
const sourceMessage = messages.find(
(m, j) =>
j > i &&
m.role === 'source' &&
(nextUserMessageIndex === -1 || j < nextUserMessageIndex),
) as SourceMessage | undefined;
let thinkingEnded = false;
let processedMessage = aiMessage?.content ?? '';
let speechMessage = aiMessage?.content ?? '';
let suggestions: string[] = [];
if (aiMessage) {
const citationRegex = /\[([^\]]+)\]/g;
const regex = /\[(\d+)\]/g;
if (processedMessage.includes('<think>')) {
const openThinkTag =
processedMessage.match(/<think>/g)?.length || 0;
const closeThinkTag =
processedMessage.match(/<\/think>/g)?.length || 0;
if (openThinkTag > closeThinkTag) {
processedMessage += '</think> <a> </a>';
}
}
if (aiMessage.content.includes('</think>')) {
thinkingEnded = true;
}
if (sourceMessage && sourceMessage.sources.length > 0) {
processedMessage = processedMessage.replace(
citationRegex,
(_, capturedContent: string) => {
const numbers = capturedContent
.split(',')
.map((numStr) => numStr.trim());
const linksHtml = numbers
.map((numStr) => {
const number = parseInt(numStr);
if (isNaN(number) || number <= 0) {
return `[${numStr}]`;
}
const source = sourceMessage.sources?.[number - 1];
const url = source?.metadata?.url;
if (url) {
return `<a href="${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">${numStr}</a>`;
} else {
return ``;
}
})
.join('');
return linksHtml;
},
);
speechMessage = aiMessage.content.replace(regex, '');
} else {
processedMessage = processedMessage.replace(regex, '');
speechMessage = aiMessage.content.replace(regex, '');
}
const suggestionMessage = messages.find(
(m, j) =>
j > i &&
m.role === 'suggestion' &&
(nextUserMessageIndex === -1 || j < nextUserMessageIndex),
) as SuggestionMessage | undefined;
if (suggestionMessage && suggestionMessage.suggestions.length > 0) {
suggestions = suggestionMessage.suggestions;
}
}
sections.push({
userMessage: msg,
assistantMessage: aiMessage,
sourceMessage: sourceMessage,
parsedAssistantMessage: processedMessage,
speechMessage,
thinkingEnded,
suggestions: suggestions,
});
}
});
return sections;
}, [messages]);
useEffect(() => {
checkConfig(
setChatModelProvider,
@@ -395,16 +539,21 @@ export const ChatProvider = ({
const rewrite = (messageId: string) => {
const index = messages.findIndex((msg) => msg.messageId === messageId);
const chatTurnsIndex = chatTurns.findIndex(
(msg) => msg.messageId === messageId,
);
if (index === -1) return;
const message = messages[index - 1];
const message = chatTurns[chatTurnsIndex - 1];
setMessages((prev) => {
return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
return [
...prev.slice(0, messages.length > 2 ? messages.indexOf(message) : 0),
];
});
setChatHistory((prev) => {
return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
return [...prev.slice(0, chatTurns.length > 2 ? chatTurnsIndex - 1 : 0)];
});
sendMessage(message.content, message.messageId, true);
@@ -433,8 +582,7 @@ export const ChatProvider = ({
if (messages.length <= 1) {
window.history.replaceState(null, '', `/c/${chatId}`);
}
let sources: Document[] | undefined = undefined;
let recievedMessage = '';
let added = false;
@@ -459,22 +607,19 @@ export const ChatProvider = ({
}
if (data.type === 'sources') {
sources = data.data;
if (!added) {
setMessages((prevMessages) => [
...prevMessages,
{
content: '',
messageId: data.messageId,
chatId: chatId!,
role: 'assistant',
sources: sources,
createdAt: new Date(),
},
]);
added = true;
setMessages((prevMessages) => [
...prevMessages,
{
messageId: data.messageId,
chatId: chatId!,
role: 'source',
sources: data.data,
createdAt: new Date(),
},
]);
if (data.data.length > 0) {
setMessageAppeared(true);
}
setMessageAppeared(true);
}
if (data.type === 'message') {
@@ -486,7 +631,6 @@ export const ChatProvider = ({
messageId: data.messageId,
chatId: chatId!,
role: 'assistant',
sources: sources,
createdAt: new Date(),
},
]);
@@ -495,7 +639,10 @@ export const ChatProvider = ({
setMessages((prev) =>
prev.map((message) => {
if (message.messageId === data.messageId) {
if (
message.messageId === data.messageId &&
message.role === 'assistant'
) {
return { ...message, content: message.content + data.data };
}
@@ -533,21 +680,34 @@ export const ChatProvider = ({
?.click();
}
if (
lastMsg.role === 'assistant' &&
lastMsg.sources &&
lastMsg.sources.length > 0 &&
!lastMsg.suggestions
) {
/* Check if there are sources after message id's index and no suggestions */
const userMessageIndex = messagesRef.current.findIndex(
(msg) => msg.messageId === messageId && msg.role === 'user',
);
const sourceMessageIndex = messagesRef.current.findIndex(
(msg, i) => i > userMessageIndex && msg.role === 'source',
);
const suggestionMessageIndex = messagesRef.current.findIndex(
(msg, i) => i > userMessageIndex && msg.role === 'suggestion',
);
if (sourceMessageIndex != -1 && suggestionMessageIndex == -1) {
const suggestions = await getSuggestions(messagesRef.current);
setMessages((prev) =>
prev.map((msg) => {
if (msg.messageId === lastMsg.messageId) {
return { ...msg, suggestions: suggestions };
}
return msg;
}),
);
setMessages((prev) => {
return [
...prev,
{
role: 'suggestion',
suggestions: suggestions,
chatId: chatId!,
createdAt: new Date(),
messageId: crypto.randomBytes(7).toString('hex'),
},
];
});
}
}
};
@@ -616,6 +776,8 @@ export const ChatProvider = ({
<chatContext.Provider
value={{
messages,
chatTurns,
sections,
chatHistory,
files,
fileIds,