feat: Implement instructor-specific course management with dedicated controller, service, types, and validation.

Backend/src/controllers/CoursesController.ts

@@ -2,11 +2,10 @@ import { Get, Body, Post, Route, Tags, SuccessResponse, Response, Delete, Contro
 import { ValidationError } from '../middleware/errorHandler';
 import { listCourseResponse } from '../types/courses.types';
 import { CoursesService } from '../services/courses.service';
-import { get } from 'http';
 
 @Route('api/courses')
 @Tags('Courses')
-export class CoursesController extends Controller {
+export class CoursesController {
     private coursesService = new CoursesService();
 
     @Get()

Backend/src/controllers/CoursesInstructorController.ts

@@ -0,0 +1,66 @@
+import { Get, Body, Post, Route, Tags, SuccessResponse, Response, Security, Put, Path, Delete, Request } from 'tsoa';
+import { ValidationError } from '../middleware/errorHandler';
+import { CoursesInstructorService } from '../services/CoursesInstructor.service';
+import {
+    createCourses,
+    createCourseResponse,
+    GetMyCourseResponse,
+    ListMyCourseResponse,
+    addinstructorCourse,
+    addinstructorCourseResponse,
+    removeinstructorCourse,
+    removeinstructorCourseResponse,
+    setprimaryCourseInstructor,
+    setprimaryCourseInstructorResponse
+} from '../types/CoursesInstructor.types';
+import { CreateCourseValidator } from "../validators/CoursesInstructor.validator";
+
+import jwt from 'jsonwebtoken';
+import { config } from '../config';
+
+@Route('api/instructors/courses')
+@Tags('CoursesInstructor')
+export class CoursesInstructorController {
+
+    @Get('')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('200', 'Courses retrieved successfully')
+    @Response('401', 'Invalid or expired token')
+    @Response('404', 'Courses not found')
+    public async listMyCourses(@Request() request: any): Promise<ListMyCourseResponse> {
+        const token = request.headers.authorization?.replace('Bearer ', '');
+        if (!token) {
+            throw new ValidationError('No token provided');
+        }
+        return await CoursesInstructorService.listMyCourses(token);
+    }
+
+    @Get('{courseId}')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('200', 'Course retrieved successfully')
+    @Response('401', 'Invalid or expired token')
+    @Response('404', 'Course not found')
+    public async getMyCourse(@Request() request: any, @Path() courseId: number): Promise<GetMyCourseResponse> {
+        const token = request.headers.authorization?.replace('Bearer ', '');
+        if (!token) {
+            throw new ValidationError('No token provided');
+        }
+        return await CoursesInstructorService.getmyCourse(token, courseId);
+    }
+
+    @Post('')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('201', 'Course created successfully')
+    @Response('400', 'Validation error')
+    @Response('500', 'Internal server error')
+    public async createCourse(@Body() body: createCourses, @Request() request: any): Promise<createCourseResponse> {
+            const token = request.headers.authorization?.replace('Bearer ', '');
+            const decoded = jwt.verify(token, config.jwt.secret) as { id: number };
+            const { error, value } = CreateCourseValidator.validate(body.data);
+            if (error) throw new ValidationError(error.details[0].message);
+            const course = await CoursesInstructorService.createCourse(value, decoded.id);
+            return course;
+    }
+
+
+}

Backend/src/services/CoursesInstructor.service.ts

@@ -0,0 +1,119 @@
+import { prisma } from '../config/database';
+import { Prisma } from '@prisma/client';
+import { config } from '../config';
+import { logger } from '../config/logger';
+import { UnauthorizedError, ValidationError, ForbiddenError } from '../middleware/errorHandler';
+import jwt from 'jsonwebtoken';
+import {
+    createCourses,
+    CreateCourseInput,
+    createCourseResponse,
+    GetMyCourseResponse,
+    ListMyCourseResponse,
+    addinstructorCourse,
+    addinstructorCourseResponse,
+    removeinstructorCourse,
+    removeinstructorCourseResponse,
+    setprimaryCourseInstructor,
+    setprimaryCourseInstructorResponse
+} from "../types/CoursesInstructor.types";
+
+export class CoursesInstructorService {
+    static async createCourse(courseData: CreateCourseInput, userId: number): Promise<createCourseResponse> {
+        try {
+            // Map custom input to Prisma format
+            const courseCreated = await prisma.course.create({
+                data: {
+                    category_id: courseData.category_id,
+                    title: courseData.title,
+                    slug: courseData.slug,
+                    description: courseData.description,
+                    thumbnail_url: courseData.thumbnail_url,
+                    price: courseData.price || 0,
+                    is_free: courseData.is_free ?? false,
+                    have_certificate: courseData.have_certificate ?? false,
+                    created_by: userId, // Required field from JWT
+                    status: 'DRAFT' // Default status
+                }
+            });
+            return {
+                code: 201,
+                message: 'Course created successfully',
+                data: courseCreated
+            };
+        } catch (error) {
+            logger.error('Failed to create course', { error });
+            throw error;
+        }
+    }
+
+    static async listMyCourses(token: string): Promise<ListMyCourseResponse> {
+        try {
+            const decoded = jwt.verify(token, config.jwt.secret) as { id: number; type: string };
+            const courseInstructors = await prisma.courseInstructor.findMany({
+                where: {
+                    user_id: decoded.id
+                },
+                include: {
+                    course: true
+                }
+            });
+
+            const courses = courseInstructors.map(ci => ci.course);
+
+            return {
+                code: 200,
+                message: 'Courses retrieved successfully',
+                data: courses,
+                total: courses.length
+            };
+        } catch (error) {
+            logger.error('Failed to retrieve courses', { error });
+            throw error;
+        }
+    }
+
+    static async getmyCourse(token: string, courseId: number): Promise<GetMyCourseResponse> {
+        try {
+            const decoded = jwt.verify(token, config.jwt.secret) as { id: number; type: string };
+
+            // Check if user is instructor of this course
+            const courseInstructor = await prisma.courseInstructor.findFirst({
+                where: {
+                    user_id: decoded.id,
+                    course_id: courseId
+                },
+                include: {
+                    course: {
+                        include: {
+                            chapters: {
+                                include: {
+                                    lessons: {
+                                        include: {
+                                            attachments: true,
+                                            progress: true,
+                                            quiz: true
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            });
+
+            if (!courseInstructor) {
+                throw new ForbiddenError('You are not an instructor of this course');
+            }
+
+            return {
+                code: 200,
+                message: 'Course retrieved successfully',
+                data: courseInstructor.course
+            };
+        } catch (error) {
+            logger.error('Failed to retrieve course', { error });
+            throw error;
+        }
+    }
+}

Backend/src/services/courses.service.ts

@@ -2,7 +2,6 @@ import { prisma } from '../config/database';
 import { Prisma } from '@prisma/client';
 import { config } from '../config';
 import { logger } from '../config/logger';
-import jwt from 'jsonwebtoken';
 import {listCourseResponse, getCourseResponse } from '../types/courses.types';
 import { UnauthorizedError, ValidationError, ForbiddenError } from '../middleware/errorHandler';
 

Backend/src/types/CoursesInstructor.types.ts

@@ -1,7 +1,25 @@
 import { Course, Prisma, User } from '@prisma/client';
 
-export interface createCourses{
+// Custom type for TSOA - avoiding complex Prisma types
-    data: Prisma.CourseCreateInput;
+export interface CreateCourseInput {
+    category_id?: number;
+    title: {
+        th: string;
+        en: string;
+    };
+    slug: string;
+    description: {
+        th: string;
+        en: string;
+    };
+    thumbnail_url?: string;
+    price?: number;
+    is_free?: boolean;
+    have_certificate?: boolean;
+}
+
+export interface createCourses {
+    data: CreateCourseInput;
 }
 
 export interface createCourseResponse {
@@ -23,7 +41,7 @@ export interface GetMyCourseResponse {
     data: Course;
 }
 
-export interface UpdateMyCourse{
+export interface UpdateMyCourse {
     data: Prisma.CourseUpdateInput;
 }
 
@@ -43,7 +61,7 @@ export interface submitCourseResponse {
     message: string;
 }
 
-export interface submitCourse{
+export interface submitCourse {
     courseId: number;
     submitted_by: number;
 }
@@ -56,11 +74,10 @@ export interface submitCourseResponse {
 export interface listCourseinstructorResponse {
     code: number;
     message: string;
-    data: User[];
+    data: Course[];
-    total: number;
 }
 
-export interface addinstructorCourse{
+export interface addinstructorCourse {
     user_id: number;
     course_id: number;
 }
@@ -70,7 +87,7 @@ export interface addinstructorCourseResponse {
     message: string;
 }
 
-export interface removeinstructorCourse{
+export interface removeinstructorCourse {
     user_id: number;
     course_id: number;
 }
@@ -80,7 +97,7 @@ export interface removeinstructorCourseResponse {
     message: string;
 }
 
-export interface setprimaryCourseInstructor{
+export interface setprimaryCourseInstructor {
     user_id: number;
     course_id: number;
 }

Backend/src/validators/CoursesInstructor.validator.ts

@@ -4,3 +4,20 @@ export const addInstructorCourseValidator = Joi.object({
     user_id: Joi.number().required(),
     course_id: Joi.number().required(),
 });
+
+export const CreateCourseValidator = Joi.object({
+    category_id: Joi.number().required(),
+    title: Joi.object({
+        th: Joi.string().required(),
+        en: Joi.string().required(),
+    }).required(),
+    slug: Joi.string().required(),
+    description: Joi.object({
+        th: Joi.string().required(),
+        en: Joi.string().required(),
+    }).required(),
+    thumbnail_url: Joi.string().required(),
+    price: Joi.number().required(),
+    is_free: Joi.boolean().required(),
+    have_certificate: Joi.boolean().required(),
+});