feat(providers): move providers to UI

ui/lib/providers/openai.ts

@@ -0,0 +1,88 @@
+import { ChatOpenAI, OpenAIEmbeddings } from '@langchain/openai'
+import { getOpenaiApiKey } from '../config'
+import { ChatModelProvider, EmbeddingModelProvider } from '.'
+
+const openaiChatModels: Record<string, string>[] = [
+  {
+    displayName: 'GPT-3.5 Turbo',
+    key: 'gpt-3.5-turbo',
+  },
+  {
+    displayName: 'GPT-4',
+    key: 'gpt-4',
+  },
+  {
+    displayName: 'GPT-4 turbo',
+    key: 'gpt-4-turbo',
+  },
+  {
+    displayName: 'GPT-4 omni',
+    key: 'gpt-4o',
+  },
+  {
+    displayName: 'GPT-4 omni mini',
+    key: 'gpt-4o-mini',
+  }
+]
+
+const openaiEmbeddingModels: Record<string, string>[] = [
+    {
+        displayName: 'Text Embedding 3 Small',
+        key: 'text-embedding-3-small',
+    }, 
+    {
+        displayName: 'Text Embedding 3 Large',
+        key: 'text-embedding-3-large',
+    }
+]
+
+export const loadOpenAIChatModels = async () => {
+    const openaiApiKey = getOpenaiApiKey()
+
+    if (!openaiApiKey) return {}
+
+    try {
+        const chatModels: Record<string, ChatModelProvider> = {}
+
+        openaiChatModels.forEach(model => {
+            chatModels[model.key] = {
+                displayName: model.displayName,
+                model: new ChatOpenAI({
+                    openAIApiKey: openaiApiKey,
+                    modelName: model.key,
+                    temperature: 0.7
+                })
+            }
+        })
+
+        return chatModels
+    } catch(err) {
+        console.error(`Error loading OpenAI models: ${err}`)
+        return {}
+    }
+}
+
+export const loadOpenAIEmbeddingModels = async () => {
+    const openaiApiKey = getOpenaiApiKey()
+
+    if (!openaiApiKey) return {}
+
+    try {
+        const embeddingModels: Record<string, EmbeddingModelProvider> = {}
+
+        openaiEmbeddingModels.forEach(model => {
+            embeddingModels[model.key] = {
+                displayName: model.displayName,
+                model: new OpenAIEmbeddings({
+                    openAIApiKey: openaiApiKey,
+                    modelName: model.key,
+                })
+            }
+        })
+
+        return embeddingModels
+    } catch(err) {
+        console.error(`Error loading OpenAI embeddings models: ${err}`)
+        return {}
+    }
+}