feat(user):完成用户登出功能。

controller/user.go

@@ -1,9 +1,11 @@
 package controller
 
 import (
+	"electricity_bill_calc/cache"
 	"electricity_bill_calc/exceptions"
 	"electricity_bill_calc/model"
 	"electricity_bill_calc/response"
+	"electricity_bill_calc/security"
 	"electricity_bill_calc/service"
 	"net/http"
 
@@ -11,6 +13,7 @@ import (
 )
 
 func InitializeUserHandlers(router *fiber.App) {
+	router.Delete("/login", security.MustAuthenticated, doLogout)
 	router.Post("/login", doLogin)
 }
 
@@ -47,3 +50,16 @@ func doLogin(c *fiber.Ctx) error {
 	}
 	return result.LoginSuccess(session)
 }
+
+func doLogout(c *fiber.Ctx) error {
+	result := response.NewResult(c)
+	session := c.Locals("session")
+	if session == nil {
+		return result.Success("用户会话已结束。")
+	}
+	_, err := cache.ClearSession(session.(*model.Session).Token)
+	if err != nil {
+		return result.Error(http.StatusInternalServerError, err.Error())
+	}
+	return result.Success("用户已成功登出系统。")
+}