feat: add general chat feature (without project/agent concept)

2025-10-12 09:48:49 +08:00
parent 07704817ba
commit 348af7fee9
9 changed files with 688 additions and 0 deletions
--- a/frontend/src/api/chatApi.ts
+++ b/frontend/src/api/chatApi.ts
@@ -0,0 +1,139 @@
+/**
+ * 通用对话API
+ * 无需项目和智能体概念，纯大模型对话
+ */
+
+export interface GeneralConversation {
+  id: string
+  userId: string
+  title: string
+  modelName?: string
+  createdAt: string
+  updatedAt: string
+}
+
+export interface GeneralMessage {
+  id: string
+  conversationId: string
+  role: 'user' | 'assistant'
+  content: string
+  model?: string
+  tokens?: number
+  createdAt: string
+}
+
+export interface SendChatMessageData {
+  content: string
+  modelType: string
+  knowledgeBaseIds?: string[]
+  conversationId?: string
+}
+
+export interface ApiResponse<T = any> {
+  success: boolean
+  data?: T
+  message?: string
+}
+
+/**
+ * 发送消息（流式输出）
+ */
+export const sendMessageStream = async (
+  data: SendChatMessageData,
+  onChunk: (content: string) => void,
+  onComplete: (conversationId: string) => void,
+  onError: (error: Error) => void
+) => {
+  try {
+    console.log('🚀 [chatApi] 发送通用对话消息', data)
+
+    const response = await fetch('/api/v1/chat/stream', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(data),
+    })
+
+    if (!response.ok) {
+      throw new Error(`HTTP error! status: ${response.status}`)
+    }
+
+    const reader = response.body?.getReader()
+    if (!reader) {
+      throw new Error('Response body is null')
+    }
+
+    const decoder = new TextDecoder()
+    let buffer = ''
+    let conversationId = data.conversationId || ''
+
+    while (true) {
+      const { done, value } = await reader.read()
+
+      if (done) {
+        break
+      }
+
+      buffer += decoder.decode(value, { stream: true })
+      const lines = buffer.split('\n')
+      buffer = lines.pop() || ''
+
+      for (const line of lines) {
+        const trimmedLine = line.trim()
+        if (!trimmedLine || !trimmedLine.startsWith('data:')) {
+          continue
+        }
+
+        const dataStr = trimmedLine.slice(5).trim()
+
+        if (dataStr === '[DONE]') {
+          console.log('✅ [chatApi] 流式输出完成')
+          onComplete(conversationId)
+          return
+        }
+
+        try {
+          const chunk = JSON.parse(dataStr)
+          if (chunk.content) {
+            onChunk(chunk.content)
+          }
+          // 从第一个chunk中提取conversationId（如果是新对话）
+          if (!conversationId && chunk.conversationId) {
+            conversationId = chunk.conversationId
+          }
+        } catch (e) {
+          console.error('Failed to parse SSE chunk:', e)
+        }
+      }
+    }
+  } catch (error) {
+    console.error('❌ [chatApi] 发送消息失败:', error)
+    onError(error as Error)
+  }
+}
+
+/**
+ * 获取对话列表
+ */
+export const getConversations = async (): Promise<ApiResponse<GeneralConversation[]>> => {
+  const response = await fetch('/api/v1/chat/conversations')
+  return response.json()
+}
+
+/**
+ * 删除对话
+ */
+export const deleteConversation = async (id: string): Promise<ApiResponse> => {
+  const response = await fetch(`/api/v1/chat/conversations/${id}`, {
+    method: 'DELETE',
+  })
+  return response.json()
+}
+
+export default {
+  sendMessageStream,
+  getConversations,
+  deleteConversation,
+}
+