fix

server/internal/db/db.go

@@ -49,6 +49,7 @@ func AutoMigrate(db *gorm.DB) error {
 		&models.ClassCourse{},
 		&models.ClassAllowedApp{},
 		&models.ClassSeatingLayout{},
+		&models.ExamSeatingLayout{},
 		&models.StaffMyClass{},
 		&models.AppPoolEntry{},
 		&models.AppTemplate{},

server/internal/handlers/handlers_seating.go

@@ -75,6 +75,65 @@ func DeleteClassSeatingLayoutHandler(db *gorm.DB) fiber.Handler {
 	}
 }
 
+// GET /exam-rooms/:id/seating-layout
+func GetExamSeatingLayoutHandler(db *gorm.DB) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		examID, err := strconv.ParseUint(c.Params("id"), 10, 64)
+		if err != nil {
+			return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "Invalid exam room ID"})
+		}
+		var layout models.ExamSeatingLayout
+		if err := db.Where("exam_room_id = ?", examID).First(&layout).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return c.JSON(fiber.Map{"layoutJson": nil})
+			}
+			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": err.Error()})
+		}
+		return c.JSON(fiber.Map{"layoutJson": layout.LayoutJSON})
+	}
+}
+
+// PUT /exam-rooms/:id/seating-layout
+func PutExamSeatingLayoutHandler(db *gorm.DB) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		examID, err := strconv.ParseUint(c.Params("id"), 10, 64)
+		if err != nil {
+			return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "Invalid exam room ID"})
+		}
+		var body struct {
+			LayoutJSON string `json:"layoutJson"`
+		}
+		if err := c.BodyParser(&body); err != nil || body.LayoutJSON == "" {
+			return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "layoutJson is required"})
+		}
+		layout := models.ExamSeatingLayout{
+			ExamRoomID: uint(examID),
+			LayoutJSON: body.LayoutJSON,
+			UpdatedAt:  time.Now(),
+		}
+		result := db.Clauses(clause.OnConflict{
+			Columns:   []clause.Column{{Name: "exam_room_id"}},
+			DoUpdates: clause.AssignmentColumns([]string{"layout_json", "updated_at"}),
+		}).Create(&layout)
+		if result.Error != nil {
+			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": result.Error.Error()})
+		}
+		return c.JSON(fiber.Map{"ok": true})
+	}
+}
+
+// DELETE /exam-rooms/:id/seating-layout
+func DeleteExamSeatingLayoutHandler(db *gorm.DB) fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		examID, err := strconv.ParseUint(c.Params("id"), 10, 64)
+		if err != nil {
+			return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "Invalid exam room ID"})
+		}
+		db.Where("exam_room_id = ?", examID).Delete(&models.ExamSeatingLayout{})
+		return c.JSON(fiber.Map{"ok": true})
+	}
+}
+
 // GET /staff/my-classes
 func GetMyClassesHandler(db *gorm.DB) fiber.Handler {
 	return func(c *fiber.Ctx) error {

server/internal/models/models.go

@@ -106,6 +106,15 @@ type ClassSeatingLayout struct {
 
 func (ClassSeatingLayout) TableName() string { return "class_seating_layouts" }
 
+// ExamSeatingLayout lưu sơ đồ chỗ ngồi theo phòng thi
+type ExamSeatingLayout struct {
+	ExamRoomID uint      `gorm:"column:exam_room_id;primaryKey;not null" json:"examRoomId"`
+	LayoutJSON string    `gorm:"column:layout_json;type:longtext;not null" json:"layoutJson"`
+	UpdatedAt  time.Time `json:"updatedAt"`
+}
+
+func (ExamSeatingLayout) TableName() string { return "exam_seating_layouts" }
+
 // ClassAllowedApp lưu từ khóa app được mở của lớp
 type ClassAllowedApp struct {
 	ClassRkID int64  `gorm:"column:class_rk_id;primaryKey;not null" json:"classRkId"`

server/main.go

@@ -213,6 +213,9 @@ func main() {
 	staff.Post("/exam-rooms/:id/cancel", handlers.CancelExamRoomHandler(gormDB))
 	staff.Post("/exam-rooms/:id/assign-random", handlers.RandomAssignExamPapersHandler(gormDB))
 	staff.Post("/exam-rooms/:id/assign-papers-batch", handlers.AssignExamPapersBatchHandler(gormDB))
+	staff.Get("/exam-rooms/:id/seating-layout", handlers.GetExamSeatingLayoutHandler(gormDB))
+	staff.Put("/exam-rooms/:id/seating-layout", handlers.PutExamSeatingLayoutHandler(gormDB))
+	staff.Delete("/exam-rooms/:id/seating-layout", handlers.DeleteExamSeatingLayoutHandler(gormDB))
 	staff.Post("/exam-rooms/:id/send-papers", handlers.SendExamPapersHandler(gormDB))
 	staff.Get("/exam-rooms/:id/submissions", handlers.ListExamSubmissionsHandler(gormDB))
 	staff.Get("/exam-rooms/:id/submissions/download-all", handlers.DownloadAllExamSubmissionsHandler(gormDB))