添加消息发送API、丰富种子对话数据、Dashboard支持真实消息发送和客户名显示

server/internal/handler/router.go

@@ -41,6 +41,7 @@ func SetupRoutes(r *gin.Engine) {
 		sessions.POST("/:id/transfer", session.Transfer)
 		sessions.POST("/:id/end", session.End)
 		sessions.PUT("/:id/priority", session.UpdatePriority)
+		sessions.POST("/:id/messages", session.SendMessage)
 
 		// 客户管理
 		customers := authRequired.Group("/customers")

server/internal/handler/session.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"net/http"
+	"time"
 
 	"github.com/gin-gonic/gin"
 	"kefu-sys/server/internal/middleware"
@@ -12,6 +13,52 @@ type SessionHandler struct{}
 
 func NewSessionHandler() *SessionHandler { return &SessionHandler{} }
 
+type SendMessageReq struct {
+	Content string `json:"content" binding:"required"`
+	Type    string `json:"type"`
+}
+
+func (h *SessionHandler) SendMessage(c *gin.Context) {
+	tenantID := middleware.GetTenantID(c)
+	userID := middleware.GetUserID(c)
+	id := c.Param("id")
+
+	var req SendMessageReq
+	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.Where("id = ? AND tenant_id = ?", id, tenantID).First(&session).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "会话不存在"})
+		return
+	}
+
+	var maxSeq int
+	model.DB.Model(&model.Message{}).Where("session_id = ?", session.ID).Select("COALESCE(MAX(seq), 0)").Scan(&maxSeq)
+
+	msg := model.Message{
+		SessionID:  session.ID,
+		SenderType: "agent",
+		SenderID:   &userID,
+		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
+	}
+
+	middleware.JSON(c, msg)
+}
+
 type CreateSessionReq struct {
 	ChannelID  uint   `json:"channel_id"`
 	CustomerID uint   `json:"customer_id"`
@@ -170,7 +217,6 @@ func (h *SessionHandler) UpdatePriority(c *gin.Context) {
 
 func parseID(s string) uint {
 	var id uint
-	// Simple atoi for uint
 	for _, c := range s {
 		if c >= '0' && c <= '9' {
 			id = id*10 + uint(c-'0')