146 lines
3.7 KiB
Go
146 lines
3.7 KiB
Go
package services
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import (
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"ai_scheduler/internal/biz"
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"ai_scheduler/internal/data/constants"
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"ai_scheduler/internal/entitys"
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"ai_scheduler/internal/gateway"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"log"
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"math/rand"
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"sync"
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"time"
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"github.com/gofiber/websocket/v2"
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)
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// ChatHandler 聊天处理器
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type ChatService struct {
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routerBiz *biz.AiRouterBiz
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Gw *gateway.Gateway
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mu sync.Mutex
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}
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// NewChatHandler 创建聊天处理器
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func NewChatService(routerService *biz.AiRouterBiz, gw *gateway.Gateway) *ChatService {
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return &ChatService{
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routerBiz: routerService,
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Gw: gw,
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}
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}
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// ToolCallResponse 工具调用响应
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type ToolCallResponse struct {
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ID string `json:"id" example:"call_1"`
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Type string `json:"type" example:"function"`
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Function FunctionCallResponse `json:"function"`
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Result interface{} `json:"result,omitempty"`
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}
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// FunctionCallResponse 函数调用响应
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type FunctionCallResponse struct {
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Name string `json:"name" example:"get_weather"`
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Arguments interface{} `json:"arguments"`
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}
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func (h *ChatService) ChatFail(c *websocket.Conn, content string) {
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err := c.WriteMessage(websocket.TextMessage, []byte(content))
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if err != nil {
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log.Println("发送错误:", err)
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}
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_ = c.Close()
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}
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func generateClientID() string {
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// 使用时间戳+随机数确保唯一性
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timestamp := time.Now().UnixNano()
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randomBytes := make([]byte, 4)
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rand.Read(randomBytes)
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randomStr := hex.EncodeToString(randomBytes)
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return fmt.Sprintf("%d%s", timestamp, randomStr)
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}
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func (h *ChatService) Chat(c *websocket.Conn) {
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h.mu.Lock()
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clientID := generateClientID()
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h.mu.Unlock()
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client := &gateway.Client{
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ID: clientID,
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SendFunc: func(data []byte) error {
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return c.WriteMessage(websocket.TextMessage, data)
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},
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}
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h.Gw.AddClient(client)
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log.Println("client connected:", clientID)
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log.Println("客户端已连接")
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// 循环读取客户端消息
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for {
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messageType, message, err := c.ReadMessage()
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if err != nil {
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log.Println("读取错误:", err)
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break
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}
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msg, chatType := h.handleMessageToString(c, messageType, message)
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if chatType == constants.ConnStatusClosed {
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break
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}
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if chatType == constants.ConnStatusIgnore {
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continue
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}
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log.Printf("收到消息: %s", string(msg))
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var req entitys.ChatSockRequest
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if err := json.Unmarshal(msg, &req); err != nil {
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log.Println("JSON parse error:", err)
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continue
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}
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//简单协议：bind:<uid>
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if c.Headers("Sec-Websocket-Protocol") == "bind" && req.SessionID != "" {
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uid := c.Query("x-session")
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_ = h.Gw.BindUid(clientID, req.SessionID)
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log.Printf("bind %s -> uid:%s\n", clientID, uid)
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}
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err = h.routerBiz.RouteWithSocket(c, &req)
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if err != nil {
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log.Println("处理失败:", err)
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entitys.MsgSend(c, entitys.Response{
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Content: err.Error(),
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Type: entitys.ResponseText,
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})
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}
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_ = entitys.MsgSend(c, entitys.Response{
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Content: "",
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Type: entitys.ResponseEnd,
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})
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}
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h.Gw.RemoveClient(clientID)
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_ = c.Close()
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log.Println("client disconnected:", clientID)
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}
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func (h *ChatService) handleMessageToString(c *websocket.Conn, msgType int, msg any) (text []byte, chatType constants.ConnStatus) {
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switch msgType {
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case websocket.TextMessage:
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return msg.([]byte), constants.ConnStatusNormal
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case websocket.BinaryMessage:
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return msg.([]byte), constants.ConnStatusNormal
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case websocket.CloseMessage:
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return nil, constants.ConnStatusClosed
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case websocket.PingMessage:
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// 可选：回复 Pong
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c.WriteMessage(websocket.PongMessage, nil)
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return nil, constants.ConnStatusIgnore
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case websocket.PongMessage:
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return nil, constants.ConnStatusIgnore
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default:
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return nil, constants.ConnStatusIgnore
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}
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return msg.([]byte), constants.ConnStatusIgnore
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}
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