Version:0.0.4.dev.260203

feat: 📚 完成课程导入与校验接口（赶在 token 过期前…）

- 实现课程导入接口 ✅
- 实现课程信息校验接口 🔍
- 测试通过 🧪

fix: 🐛 修了一堆 bug，15 分钟 accessToken 默默见证了时间的流逝 ⏳😭

backend/api/container.go

@@ -1,6 +1,7 @@
 package api
 
 type ApiHandlers struct {
-	UserHandler *UserHandler
-	TaskHandler *TaskHandler
+	UserHandler     *UserHandler
+	TaskHandler     *TaskHandler
+	ScheduleHandler *ScheduleHandler
 }

backend/api/schedule.go

@@ -0,0 +1,66 @@
+package api
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/LoveLosita/smartflow/backend/model"
+	"github.com/LoveLosita/smartflow/backend/respond"
+	"github.com/LoveLosita/smartflow/backend/service"
+	"github.com/gin-gonic/gin"
+)
+
+type ScheduleHandler struct {
+	// 伸出手：准备接住 Service
+	service *service.ScheduleService
+}
+
+// NewScheduleHandler 创建 ScheduleHandler 实例
+func NewScheduleHandler(service *service.ScheduleService) *ScheduleHandler {
+	return &ScheduleHandler{
+		service: service,
+	}
+}
+
+func (sa *ScheduleHandler) CheckUserCourse(c *gin.Context) {
+	//1.从请求中获取课程信息
+	var req model.UserCheckCourseRequest
+	err := c.ShouldBindJSON(&req)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, respond.WrongParamType)
+		return
+	}
+	//2.调用 service 层的 CheckSingleCourse 方法进行校验
+	result := service.CheckSingleCourse(req)
+	//3.根据校验结果返回响应
+	if result {
+		c.JSON(http.StatusOK, respond.Ok)
+	} else {
+		c.JSON(http.StatusBadRequest, respond.WrongCourseInfo)
+	}
+}
+
+func (sa *ScheduleHandler) AddUserCourses(c *gin.Context) {
+	//1.从请求中获取课程信息
+	var req model.UserImportCoursesRequest
+	err := c.ShouldBindJSON(&req)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, respond.WrongParamType)
+		return
+	}
+	//2.从上下文获取用户ID
+	userIDInterface := c.GetInt("user_id")
+	//3.调用 service 层的 AddUserCourses 方法添加课程
+	err = sa.service.AddUserCourses(req, userIDInterface)
+	if err != nil {
+		switch {
+		case errors.Is(err, respond.WrongParamType), errors.Is(err, respond.WrongCourseInfo):
+			c.JSON(http.StatusBadRequest, err)
+		default:
+			c.JSON(http.StatusInternalServerError, respond.InternalError(err))
+		}
+		return
+	}
+	//4.返回成功响应
+	c.JSON(http.StatusOK, respond.Ok)
+}