实现Widget访客端API：初始化会话、发送消息、消息轮询，前端Widget对接真实API

server/internal/handler/router.go

@@ -13,6 +13,7 @@ func SetupRoutes(r *gin.Engine) {
 	stats := NewStatisticsHandler()
 	admin := NewAdminHandler()
 	ws := NewWsHandler()
+	widget := NewWidgetHandler()
 
 	api := r.Group("/api")
 
@@ -20,10 +21,12 @@ func SetupRoutes(r *gin.Engine) {
 	api.POST("/login", auth.Login)
 	api.POST("/register", auth.Register)
 
-	// widget 接口（通过 channel_id 鉴权，简化处理）
-	widget := api.Group("/widget")
-	widget.POST("/init", func(c *gin.Context) { c.JSON(200, gin.H{"code": 0, "data": gin.H{"session_id": 1}}) })
-	widget.POST("/message", func(c *gin.Context) { c.JSON(200, gin.H{"code": 0}) })
+	// widget 接口
+	widgetApi := api.Group("/widget")
+	widgetApi.POST("/init", widget.Init)
+	widgetApi.GET("/init", widget.Init)
+	widgetApi.POST("/message", widget.SendMessage)
+	widgetApi.GET("/messages", widget.GetMessages)
 
 	// 需要认证的接口
 	authRequired := api.Group("")

server/internal/handler/widget.go

@@ -0,0 +1,134 @@
+package handler
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"kefu-sys/server/internal/model"
+)
+
+type WidgetHandler struct{}
+
+func NewWidgetHandler() *WidgetHandler { return &WidgetHandler{} }
+
+type WidgetInitReq struct {
+	ChannelKey string `json:"channel_key" form:"channel_key"`
+	VisitorName string `json:"visitor_name"`
+}
+
+type WidgetMessageReq struct {
+	SessionID uint   `json:"session_id" binding:"required"`
+	Content   string `json:"content" binding:"required"`
+	Type      string `json:"type"`
+}
+
+func (h *WidgetHandler) Init(c *gin.Context) {
+	var req WidgetInitReq
+	if err := c.ShouldBindQuery(&req); err != nil && c.ShouldBindJSON(&req) != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
+		return
+	}
+	if req.ChannelKey == "" {
+		req.ChannelKey = c.Query("channel_key")
+	}
+
+	var channel model.Channel
+	if err := model.DB.Where("script_code LIKE ?", "%"+req.ChannelKey+"%").Or("script_code LIKE ?", "%"+req.ChannelKey+"%").First(&channel).Error; err != nil {
+		// 如果没有匹配的渠道，使用第一个启用的渠道
+		if err := model.DB.Where("type = ? AND status = ?", "web", "enabled").First(&channel).Error; err != nil {
+			c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "渠道不存在"})
+			return
+		}
+	}
+
+	name := req.VisitorName
+	if name == "" {
+		name = "访客"
+	}
+
+	// 创建或查找客户
+	var customer model.Customer
+	model.DB.Where("tenant_id = ? AND name = ? AND phone = ''", channel.TenantID, name).First(&customer)
+	if customer.ID == 0 {
+		customer = model.Customer{
+			TenantID: channel.TenantID,
+			Name:     name,
+			Source:   "网页",
+			Status:   "online",
+		}
+		model.DB.Create(&customer)
+	}
+
+	// 创建会话
+	session := model.Session{
+		TenantID:   channel.TenantID,
+		ChannelID:  channel.ID,
+		CustomerID: customer.ID,
+		Status:     "waiting",
+		Priority:   "normal",
+	}
+	model.DB.Create(&session)
+
+	c.JSON(http.StatusOK, gin.H{
+		"code": 0,
+		"data": gin.H{
+			"session_id":  session.ID,
+			"customer_id": customer.ID,
+			"channel_id":  channel.ID,
+			"tenant_id":   channel.TenantID,
+		},
+	})
+}
+
+func (h *WidgetHandler) SendMessage(c *gin.Context) {
+	var req WidgetMessageReq
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
+		return
+	}
+	if req.Type == "" {
+		req.Type = "text"
+	}
+
+	var session model.Session
+	if err := model.DB.First(&session, req.SessionID).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "会话不存在"})
+		return
+	}
+
+	// 如果是等待中的会话，更新为活跃
+	if session.Status == "waiting" {
+		model.DB.Model(&session).Update("status", "active")
+	}
+
+	var maxSeq int
+	model.DB.Model(&model.Message{}).Where("session_id = ?", session.ID).Select("COALESCE(MAX(seq), 0)").Scan(&maxSeq)
+
+	custID := session.CustomerID
+	msg := model.Message{
+		SessionID:  session.ID,
+		SenderType: "visitor",
+		SenderID:   &custID,
+		Content:    req.Content,
+		Type:       req.Type,
+		Seq:        maxSeq + 1,
+		SentAt:     time.Now(),
+	}
+
+	if err := model.DB.Create(&msg).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "发送失败"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"code": 0, "data": msg})
+}
+
+func (h *WidgetHandler) GetMessages(c *gin.Context) {
+	sessionID := c.Query("session_id")
+
+	var messages []model.Message
+	model.DB.Where("session_id = ?", sessionID).Order("seq asc").Find(&messages)
+
+	c.JSON(http.StatusOK, gin.H{"code": 0, "data": messages})
+}

web/src/widgets/VisitorChat.tsx

@@ -1,63 +1,123 @@
+import { useState, useEffect, useRef } from 'react'
+import { CloseOutlined, MessageOutlined, SmileOutlined, SendOutlined, StarFilled } from '@ant-design/icons'
+
 interface Message {
-  id: string
+  id: number
   sender: 'visitor' | 'agent'
   content: string
   time: string
 }
 
-const initialMessages: Message[] = [
-  { id: '1', sender: 'agent', content: '您好！欢迎咨询客服云，请问有什么可以帮您的？', time: '10:30' },
-]
-
 const quickQuestions = ['产品功能介绍', '价格咨询', '售后服务', '合作咨询']
 
-import { useState } from 'react'
-import { CloseOutlined, MessageOutlined, SmileOutlined, PaperClipOutlined, SendOutlined, StarFilled } from '@ant-design/icons'
-
 const VisitorChat = () => {
   const [open, setOpen] = useState(false)
-  const [messages, setMessages] = useState<Message[]>(initialMessages)
+  const [sessionId, setSessionId] = useState<number | null>(null)
+  const [messages, setMessages] = useState<Message[]>([
+    { id: 0, sender: 'agent', content: '您好！欢迎咨询客服云，请问有什么可以帮您的？', time: '' },
+  ])
   const [input, setInput] = useState('')
-  const [typing, setTyping] = useState(false)
+  const [sending, setSending] = useState(false)
   const [showRating, setShowRating] = useState(false)
   const [rated, setRated] = useState(false)
+  const pollRef = useRef<number | null>(null)
 
-  const sendMessage = (text: string) => {
-    if (!text.trim()) return
-    const msg: Message = { id: Date.now().toString(), sender: 'visitor', content: text, time: new Date().toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' }) }
-    setMessages(prev => [...prev, msg])
+  const initSession = async () => {
+    try {
+      const res = await fetch(`/api/widget/init?channel_key=WK_8a3f2e&visitor_name=测试访客`, { method: 'POST' })
+      const json = await res.json()
+      if (json.code === 0) {
+        setSessionId(json.data.session_id)
+      }
+    } catch (e) {
+      console.error('Init session failed:', e)
+    }
+  }
+
+  useEffect(() => {
+    if (open && !sessionId) {
+      initSession()
+    }
+    if (!open) {
+      setSessionId(null)
+      if (pollRef.current) clearInterval(pollRef.current)
+    }
+    return () => { if (pollRef.current) clearInterval(pollRef.current) }
+  }, [open])
+
+  useEffect(() => {
+    if (sessionId) {
+      pollRef.current = window.setInterval(async () => {
+        try {
+          const res = await fetch(`/api/widget/messages?session_id=${sessionId}`)
+          const json = await res.json()
+          if (json.code === 0 && json.data) {
+            const serverMsgs: Message[] = json.data.map((m: any) => ({
+              id: m.id,
+              sender: m.sender_type === 'agent' ? 'agent' : 'visitor',
+              content: m.content,
+              time: new Date(m.sent_at).toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' }),
+            }))
+            setMessages(prev => {
+              const existing = new Set(prev.map(m => m.id))
+              const welcome = prev[0]
+              // Filter out server messages that we already have; keep welcome
+              const serverOnly = serverMsgs.filter(m => !existing.has(m.id) && m.id > 0)
+              // Merge sorted
+              const merged = [welcome, ...serverOnly].sort((a, b) => a.id - b.id)
+              return merged.length > 1 ? merged : prev
+            })
+          }
+        } catch { /* ignore */ }
+      }, 2000)
+      return () => { if (pollRef.current) clearInterval(pollRef.current) }
+    }
+  }, [sessionId])
+
+  const sendMessage = async (text: string) => {
+    if (!text.trim() || sending) return
+    const content = text.trim()
     setInput('')
-    setTyping(true)
-    setTimeout(() => {
-      setTyping(false)
-      const reply: Message = { id: (Date.now() + 1).toString(), sender: 'agent', content: '感谢您的咨询，客服正在为您处理中...', time: new Date().toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' }) }
-      setMessages(prev => [...prev, reply])
-    }, 1500)
+    setSending(true)
+
+    // Add locally immediately
+    const localMsg: Message = { id: -Date.now(), sender: 'visitor', content, time: new Date().toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' }) }
+    setMessages(prev => [...prev, localMsg])
+
+    if (sessionId) {
+      try {
+        const res = await fetch('/api/widget/message', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ session_id: sessionId, content, type: 'text' }),
+        })
+        const json = await res.json()
+        if (json.code !== 0) {
+          console.error('Send failed:', json.message)
+        }
+      } catch (e) {
+        console.error('Send error:', e)
+      }
+    }
+    setSending(false)
   }
 
-  const handleEnd = () => {
-    if (!rated) {
-      setShowRating(true)
-    }
-    setOpen(false)
+  const handleOpen = () => {
+    setOpen(true)
+    setShowRating(false)
+    setRated(false)
   }
 
   return (
     <>
-      {/* 悬浮按钮 */}
       {!open && (
-        <button
-          onClick={() => { setOpen(true); setShowRating(false) }}
-          className="fixed right-5 bottom-5 w-14 h-14 rounded-full bg-blue-500 hover:bg-blue-600 text-white shadow-lg flex items-center justify-center transition-all hover:scale-110 z-50"
-        >
+        <button onClick={handleOpen} className="fixed right-5 bottom-5 w-14 h-14 rounded-full bg-blue-500 hover:bg-blue-600 text-white shadow-lg flex items-center justify-center transition-all hover:scale-110 z-50">
           <MessageOutlined className="text-xl" />
         </button>
       )}
 
-      {/* 聊天窗口 */}
       {open && (
         <div className="fixed right-5 bottom-5 w-[400px] h-[600px] bg-white rounded-xl shadow-2xl border border-neutral-200 flex flex-col z-50 overflow-hidden">
-          {/* 顶部 */}
           <div className="h-14 px-4 flex items-center justify-between bg-gradient-to-r from-blue-500 to-blue-600 flex-shrink-0">
             <div className="flex items-center gap-2.5">
               <div className="w-8 h-8 rounded-full bg-white/20 flex items-center justify-center">
@@ -65,65 +125,48 @@ const VisitorChat = () => {
               </div>
               <div>
                 <div className="text-sm font-medium text-white">客服云</div>
-                <div className="text-xs text-white/70">{typing ? '正在输入...' : '在线'}</div>
+                <div className="text-xs text-white/70">在线</div>
               </div>
             </div>
-            <CloseOutlined className="text-white cursor-pointer hover:text-white/80" onClick={handleEnd} />
+            <CloseOutlined className="text-white cursor-pointer hover:text-white/80" onClick={() => { setOpen(false); if (!rated) setShowRating(true) }} />
           </div>
 
-          {/* 消息区域 */}
           <div className="flex-1 overflow-auto p-4 space-y-3 bg-neutral-50">
             {messages.map(msg => (
               <div key={msg.id} className={`flex ${msg.sender === 'visitor' ? 'justify-end' : 'justify-start'}`}>
                 <div className={`max-w-[75%] rounded-lg px-3 py-2 text-sm ${msg.sender === 'visitor' ? 'bg-blue-500 text-white' : 'bg-white text-neutral-700 border border-neutral-200'}`}>
                   {msg.content}
-                  <div className={`text-xs mt-1 ${msg.sender === 'visitor' ? 'text-white/60' : 'text-neutral-400'}`}>{msg.time}</div>
+                  {msg.time && <div className={`text-xs mt-1 ${msg.sender === 'visitor' ? 'text-white/60' : 'text-neutral-400'}`}>{msg.time}</div>}
                 </div>
               </div>
             ))}
-            {typing && (
-              <div className="flex justify-start">
-                <div className="bg-white rounded-lg px-3 py-2 border border-neutral-200">
-                  <div className="flex gap-1">
-                    <span className="w-1.5 h-1.5 rounded-full bg-neutral-300 animate-bounce" style={{ animationDelay: '0ms' }} />
-                    <span className="w-1.5 h-1.5 rounded-full bg-neutral-300 animate-bounce" style={{ animationDelay: '150ms' }} />
-                    <span className="w-1.5 h-1.5 rounded-full bg-neutral-300 animate-bounce" style={{ animationDelay: '300ms' }} />
-                  </div>
-                </div>
-              </div>
-            )}
           </div>
 
-          {/* 快捷问题 */}
           {messages.length <= 1 && (
             <div className="px-4 py-2 border-t border-neutral-100 flex-shrink-0">
               <div className="flex flex-wrap gap-1.5">
                 {quickQuestions.map((q, i) => (
-                  <button key={i} onClick={() => sendMessage(q)} className="text-xs px-2.5 py-1 rounded-full bg-blue-50 text-blue-600 hover:bg-blue-100 transition-colors border border-blue-100">
-                    {q}
-                  </button>
+                  <button key={i} onClick={() => sendMessage(q)} className="text-xs px-2.5 py-1 rounded-full bg-blue-50 text-blue-600 hover:bg-blue-100 transition-colors border border-blue-100">{q}</button>
                 ))}
               </div>
             </div>
           )}
 
-          {/* 输入框 */}
           <div className="p-3 border-t border-neutral-100 flex-shrink-0">
             <div className="flex items-center gap-2 bg-neutral-50 rounded-lg px-3 py-1.5">
-              <SmileOutlined className="text-neutral-300 cursor-pointer hover:text-neutral-500" />
-              <PaperClipOutlined className="text-neutral-300 cursor-pointer hover:text-neutral-500" />
+              <SmileOutlined className="text-neutral-300" />
               <input
                 className="flex-1 bg-transparent outline-none text-sm text-neutral-700 placeholder:text-neutral-400"
                 placeholder="输入您的问题..."
                 value={input}
                 onChange={e => setInput(e.target.value)}
-                onKeyDown={e => { if (e.key === 'Enter') { sendMessage(input) } }}
+                onKeyDown={e => { if (e.key === 'Enter') sendMessage(input) }}
+                disabled={sending}
               />
               <SendOutlined className="text-blue-500 cursor-pointer hover:text-blue-600" onClick={() => sendMessage(input)} />
             </div>
           </div>
 
-          {/* 满意度弹窗 */}
           {showRating && (
             <div className="absolute inset-0 bg-black/40 flex items-center justify-center z-10">
               <div className="bg-white rounded-xl p-6 mx-8 w-full max-w-xs text-center">
@@ -131,11 +174,8 @@ const VisitorChat = () => {
                 <div className="text-sm text-neutral-400 mb-4">请对我们的服务进行评价</div>
                 <div className="flex justify-center gap-1.5 mb-4">
                   {[1, 2, 3, 4, 5].map(star => (
-                    <StarFilled
-                      key={star}
-                      className="text-2xl cursor-pointer text-neutral-200 hover:text-yellow-400 transition-colors"
-                      onClick={() => { setRated(true); setShowRating(false) }}
-                    />
+                    <StarFilled key={star} className="text-2xl cursor-pointer text-neutral-200 hover:text-yellow-400 transition-colors"
+                      onClick={() => { setRated(true); setShowRating(false) }} />
                   ))}
                 </div>
                 <button onClick={() => setShowRating(false)} className="text-sm text-neutral-400 hover:text-neutral-600">跳过</button>