fix module removal to delete actual module records

Add a module delete API route and handler so level/module removal actions remove modules directly instead of only deleting sub-modules.

Made-with: Cursor

gen/db/compat_course_management.go

@@ -43,6 +43,11 @@ func (q *Queries) DeleteSubModuleCompat(ctx context.Context, id int64) error {
 	return err
 }
 
+func (q *Queries) DeleteModuleCompat(ctx context.Context, id int64) error {
+	_, err := q.db.Exec(ctx, `DELETE FROM modules WHERE id = $1`, id)
+	return err
+}
+
 func (q *Queries) UpdateSubModuleVideoCompat(ctx context.Context, id int64, title string, description string, videoURL string) error {
 	_, err := q.db.Exec(ctx, `
 UPDATE sub_module_videos

internal/web_server/handlers/hierarchy_handler.go

@@ -865,6 +865,18 @@ func (h *Handler) DeleteSubModule(c *fiber.Ctx) error {
 	return c.JSON(domain.Response{Message: "Sub-module deleted"})
 }
 
+func (h *Handler) DeleteModule(c *fiber.Ctx) error {
+	moduleID, err := strconv.ParseInt(c.Params("moduleId"), 10, 64)
+	if err != nil || moduleID <= 0 {
+		return c.Status(fiber.StatusBadRequest).JSON(domain.ErrorResponse{Message: "Invalid module ID", Error: "moduleId must be a positive integer"})
+	}
+
+	if err := h.analyticsDB.DeleteModuleCompat(c.Context(), moduleID); err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{Message: "Failed to delete module", Error: err.Error()})
+	}
+	return c.JSON(domain.Response{Message: "Module deleted"})
+}
+
 func (h *Handler) UpdateSubModuleVideo(c *fiber.Ctx) error {
 	videoID, err := strconv.ParseInt(c.Params("videoId"), 10, 64)
 	if err != nil || videoID <= 0 {

internal/web_server/routes.go

@@ -92,6 +92,7 @@ func (a *App) initAppRoutes() {
 	groupV1.Delete("/course-management/sub-categories/:subCategoryId", a.authMiddleware, a.RequirePermission("course_categories.delete"), h.DeleteCourseSubCategory)
 	groupV1.Post("/course-management/levels", a.authMiddleware, a.RequirePermission("subcourses.create"), h.CreateLevel)
 	groupV1.Post("/course-management/modules", a.authMiddleware, a.RequirePermission("subcourses.create"), h.CreateModule)
+	groupV1.Delete("/course-management/modules/:moduleId", a.authMiddleware, a.RequirePermission("subcourses.delete"), h.DeleteModule)
 	groupV1.Post("/course-management/sub-modules", a.authMiddleware, a.RequirePermission("subcourses.create"), h.CreateSubModule)
 	groupV1.Put("/course-management/sub-modules/:subModuleId", a.authMiddleware, a.RequirePermission("subcourses.update"), h.UpdateSubModule)
 	groupV1.Delete("/course-management/sub-modules/:subModuleId", a.authMiddleware, a.RequirePermission("subcourses.delete"), h.DeleteSubModule)