feat: Introduce API endpoints and refactor service methods for adding, removing, listing, and setting primary course instructors.

Backend/src/controllers/CoursesInstructorController.ts

@@ -15,7 +15,8 @@ import {
     UpdateMyCourse,
     UpdateMyCourseResponse,
     DeleteMyCourseResponse,
-    submitCourseResponse
+    submitCourseResponse,
+    listinstructorCourseResponse
 } from '../types/CoursesInstructor.types';
 import { CreateCourseValidator } from "../validators/CoursesInstructor.validator";
 
@@ -105,5 +106,55 @@ export class CoursesInstructorController {
         return await CoursesInstructorService.sendCourseForReview({ token, course_id: courseId });
     }
 
+    @Get('listinstructor/{courseId}')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('200', 'Instructors retrieved successfully')
+    @Response('401', 'Invalid or expired token')
+    @Response('404', 'Instructors not found')
+    public async listInstructorCourses(@Request() request: any, @Path() courseId: number): Promise<listinstructorCourseResponse> {
+        const token = request.headers.authorization?.replace('Bearer ', '');
+        if (!token) {
+            throw new ValidationError('No token provided');
+        }
+        return await CoursesInstructorService.listInstructorsOfCourse({ token, course_id: courseId });
+    }
 
+    @Post('add-instructor/{courseId}/{userId}')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('200', 'Instructor added successfully')
+    @Response('401', 'Invalid or expired token')
+    @Response('404', 'Instructor not found')
+    public async addInstructor(@Request() request: any, @Path() courseId: number, @Path() userId: number): Promise<addinstructorCourseResponse> {
+        const token = request.headers.authorization?.replace('Bearer ', '');
+        if (!token) {
+            throw new ValidationError('No token provided');
+        }
+        return await CoursesInstructorService.addInstructorToCourse({ token, course_id: courseId, user_id: userId });
+    }
+
+    @Post('remove-instructor/{courseId}/{userId}')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('200', 'Instructor removed successfully')
+    @Response('401', 'Invalid or expired token')
+    @Response('404', 'Instructor not found')
+    public async removeInstructor(@Request() request: any, @Path() courseId: number, @Path() userId: number): Promise<removeinstructorCourseResponse> {
+        const token = request.headers.authorization?.replace('Bearer ', '');
+        if (!token) {
+            throw new ValidationError('No token provided');
+        }
+        return await CoursesInstructorService.removeInstructorFromCourse({ token, course_id: courseId, user_id: userId });
+    }
+
+    @Post('set-primary-instructor/{courseId}/{userId}')
+    @Security('jwt', ['instructor'])
+    @SuccessResponse('200', 'Primary instructor set successfully')
+    @Response('401', 'Invalid or expired token')
+    @Response('404', 'Primary instructor not found')
+    public async setPrimaryInstructor(@Request() request: any, @Path() courseId: number, @Path() userId: number): Promise<setprimaryCourseInstructorResponse> {
+        const token = request.headers.authorization?.replace('Bearer ', '');
+        if (!token) {
+            throw new ValidationError('No token provided');
+        }
+        return await CoursesInstructorService.setPrimaryInstructor({ token, course_id: courseId, user_id: userId });
+    }
 }

Backend/src/services/CoursesInstructor.service.ts

@@ -19,7 +19,8 @@ import {
     submitCourseResponse,
     listinstructorCourseResponse,
     sendCourseForReview,
-    getmyCourse
+    getmyCourse,
+    listinstructorCourse,
 } from "../types/CoursesInstructor.types";
 
 export class CoursesInstructorService {
@@ -186,7 +187,7 @@ export class CoursesInstructorService {
 
 
 
-    async addInstructorToCourse(addinstructorCourse: addinstructorCourse): Promise<addinstructorCourseResponse> {
+    static async addInstructorToCourse(addinstructorCourse: addinstructorCourse): Promise<addinstructorCourseResponse> {
         try {
             const decoded = jwt.verify(addinstructorCourse.token, config.jwt.secret) as { id: number; type: string };
             await prisma.courseInstructor.create({
@@ -205,7 +206,7 @@ export class CoursesInstructorService {
         }
     }
 
-    async removeInstructorFromCourse(removeinstructorCourse: removeinstructorCourse): Promise<removeinstructorCourseResponse> {
+    static async removeInstructorFromCourse(removeinstructorCourse: removeinstructorCourse): Promise<removeinstructorCourseResponse> {
         try {
             const decoded = jwt.verify(removeinstructorCourse.token, config.jwt.secret) as { id: number; type: string };
             await prisma.courseInstructor.delete({
@@ -226,12 +227,12 @@ export class CoursesInstructorService {
         }
     }
 
-    async listInstructorsOfCourse(setprimaryCourseInstructor: setprimaryCourseInstructor): Promise<listinstructorCourseResponse> {
+    static async listInstructorsOfCourse(listinstructorCourse: listinstructorCourse): Promise<listinstructorCourseResponse> {
         try {
-            const decoded = jwt.verify(setprimaryCourseInstructor.token, config.jwt.secret) as { id: number; type: string };
+            const decoded = jwt.verify(listinstructorCourse.token, config.jwt.secret) as { id: number; type: string };
             const courseInstructors = await prisma.courseInstructor.findMany({
                 where: {
-                    course_id: setprimaryCourseInstructor.course_id,
+                    course_id: listinstructorCourse.course_id,
                 },
                 include: {
                     user: true,
@@ -248,7 +249,7 @@ export class CoursesInstructorService {
         }
     }
 
-    async setPrimaryInstructor(setprimaryCourseInstructor: setprimaryCourseInstructor): Promise<setprimaryCourseInstructorResponse> {
+    static async setPrimaryInstructor(setprimaryCourseInstructor: setprimaryCourseInstructor): Promise<setprimaryCourseInstructorResponse> {
         try {
             const decoded = jwt.verify(setprimaryCourseInstructor.token, config.jwt.secret) as { id: number; type: string };
             await prisma.courseInstructor.update({

Backend/src/types/CoursesInstructor.types.ts

@@ -101,6 +101,7 @@ export interface listCourseinstructorResponse {
 
 export interface addinstructorCourse {
     token: string;
+    user_id: number;
     course_id: number;
 }
 
@@ -119,6 +120,11 @@ export interface listinstructorCourseResponse {
     }[];
 }
 
+export interface listinstructorCourse {
+    token: string;
+    course_id: number;
+}
+
 export interface removeinstructorCourse {
     token: string;
     user_id: number;