feat: Implement chapter and lesson management with new services and types, and introduce Minio service.

Backend/src/controllers/CategoriesController.ts

@@ -1,7 +1,7 @@
 import { Get, Body, Post, Route, Tags, SuccessResponse, Response, Delete, Controller, Security, Request, Put, Path } from 'tsoa';
 import { ValidationError } from '../middleware/errorHandler';
 import { CategoryService } from '../services/categories.service';
-import { createCategory, createCategoryResponse, deleteCategoryResponse, updateCategory, updateCategoryResponse, listCategoriesResponse } from '../types/categories.type';
+import { createCategory, createCategoryResponse, deleteCategoryResponse, updateCategory, updateCategoryResponse, listCategoriesResponse } from '../types/Categories.type';
 
 @Route('api/categories')
 @Tags('Categories')

Backend/src/controllers/CoursesController.ts

@@ -1,6 +1,6 @@
 import { Get, Body, Post, Route, Tags, SuccessResponse, Response, Delete, Controller, Security, Request, Put, Path } from 'tsoa';
 import { ValidationError } from '../middleware/errorHandler';
-import { listCourseResponse } from '../types/courses.types';
+import { listCourseResponse } from '../types/Courses.types';
 import { CoursesService } from '../services/courses.service';
 
 @Route('api/courses')

Backend/src/services/ChaptersLesson.service.ts

@@ -0,0 +1,56 @@
+import { prisma } from '../config/database';
+import { Prisma } from '@prisma/client';
+import { config } from '../config';
+import { logger } from '../config/logger';
+import { UnauthorizedError, ValidationError, ForbiddenError, NotFoundError } from '../middleware/errorHandler';
+import jwt from 'jsonwebtoken';
+import {
+    LessonAttachmentData,
+    LessonData,
+    ChapterData,
+    CreateLessonInput,
+    UpdateLessonInput,
+    CreateChapterInput,
+    UpdateChapterInput,
+    ChaptersRequest,
+    DeleteChapterRequest,
+    ReorderChapterRequest,
+    ListChaptersResponse,
+    GetChapterResponse,
+    CreateChapterResponse,
+    UpdateChapterResponse,
+    DeleteChapterResponse,
+    ReorderChapterResponse,
+    ChapterWithLessonsResponse,
+    ListLessonsRequest,
+    GetLessonRequest,
+    CreateLessonRequest,
+    UpdateLessonRequest,
+    DeleteLessonRequest,
+    ReorderLessonsRequest,
+    ListLessonsResponse,
+    GetLessonResponse,
+    CreateLessonResponse,
+    UpdateLessonResponse,
+    DeleteLessonResponse,
+    ReorderLessonsResponse,
+} from "../types/ChaptersLesson.typs";
+
+export class ChaptersLessonService {
+    async listChapters(request: ChaptersRequest): Promise<ListChaptersResponse> {
+        try {
+            const { token, course_id } = request;
+            const decodedToken = jwt.verify(token, config.jwt.secret) as { id: number };
+            const user = await prisma.user.findUnique({ where: { id: decodedToken.id } });
+            if (!user) {
+                throw new UnauthorizedError('Invalid token');
+            }
+            const chapters = await prisma.chapter.findMany({ where: { course_id } });
+            return { code: 200, message: 'Chapters fetched successfully', data: chapters as ChapterData[], total: chapters.length };
+        } catch (error) {
+            logger.error(`Error fetching chapters: ${error}`);
+            throw error;
+        }
+    }
+
+}

Backend/src/services/CoursesInstructor.service.ts

@@ -143,7 +143,7 @@ export class CoursesInstructorService {
 
             const course = await prisma.course.update({
                 where: {
-                    id: courseInstructorId.user_id
+                    id: courseId
                 },
                 data: courseData
             });
@@ -167,7 +167,7 @@ export class CoursesInstructorService {
 
             const course = await prisma.course.delete({
                 where: {
-                    id: courseInstructorId.user_id
+                    id: courseId
                 }
             });
             return {

Backend/src/services/categories.service.ts

@@ -3,7 +3,7 @@ import { Prisma } from '@prisma/client';
 import { config } from '../config';
 import { logger } from '../config/logger';
 import jwt from 'jsonwebtoken';
-import { createCategory, createCategoryResponse, deleteCategoryResponse, updateCategory, updateCategoryResponse, listCategoriesResponse, Category } from '../types/categories.type';
+import { createCategory, createCategoryResponse, deleteCategoryResponse, updateCategory, updateCategoryResponse, listCategoriesResponse, Category } from '../types/Categories.type';
 import { UnauthorizedError, ValidationError, ForbiddenError } from '../middleware/errorHandler';
 
 export class CategoryService {

Backend/src/services/courses.service.ts

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

Backend/src/types/ChaptersLesson.typs.ts

@@ -0,0 +1,320 @@
+
+// ============================================
+// Multi-language Types
+// ============================================
+
+import { MultiLanguageText } from './index';
+
+// Use MultiLanguageText from index.ts for consistency
+export type MultiLangText = MultiLanguageText;
+
+// ============================================
+// Lesson Types (for nested inclusion)
+// ============================================
+
+export interface LessonAttachmentData {
+    id: number;
+    lesson_id: number;
+    file_name: string;
+    file_path: string;
+    file_size: number;
+    mime_type: string;
+    description: MultiLanguageText | null;
+    sort_order: number;
+    created_at: Date;
+}
+
+export interface QuizData {
+    id: number;
+    lesson_id: number;
+    title: MultiLanguageText;
+    description: MultiLanguageText | null;
+    passing_score: number;
+    time_limit: number | null;
+    shuffle_questions: boolean;
+    shuffle_choices: boolean;
+    show_answers_after_completion: boolean;
+    created_at: Date;
+    created_by: number;
+    updated_at: Date | null;
+    updated_by: number | null;
+}
+
+export interface LessonProgressData {
+    id: number;
+    user_id: number;
+    lesson_id: number;
+    is_completed: boolean;
+    completed_at: Date | null;
+    video_progress_seconds: number;
+    video_duration_seconds: number | null;
+    video_progress_percentage: number | null;
+    last_watched_at: Date | null;
+    created_at: Date;
+    updated_at: Date | null;
+}
+
+export interface LessonData {
+    id: number;
+    chapter_id: number;
+    title: MultiLanguageText;
+    content: MultiLanguageText | null;
+    type: 'VIDEO' | 'QUIZ';
+    duration_minutes: number | null;
+    sort_order: number;
+    is_sequential: boolean;
+    prerequisite_lesson_ids: number[] | null;
+    require_pass_quiz: boolean;
+    is_published: boolean;
+    created_at: Date;
+    updated_at: Date | null;
+    attachments?: LessonAttachmentData[];
+    quiz?: QuizData | null;
+    progress?: LessonProgressData[];
+}
+
+// ============================================
+// Chapter Types
+// ============================================
+
+export interface ChapterData {
+    id: number;
+    course_id: number;
+    title: MultiLanguageText;
+    description: MultiLanguageText | null;
+    sort_order: number;
+    is_published: boolean;
+    created_at: Date;
+    updated_at: Date | null;
+    lessons?: LessonData[];
+}
+
+// ============================================
+// Request Types
+// ============================================
+
+export interface ChaptersRequest {
+    token: string;
+    course_id: number;
+}
+
+export interface GetChapterRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+}
+
+export interface CreateChapterInput {
+    title: MultiLanguageText;
+    description?: MultiLanguageText;
+    sort_order?: number;
+    is_published?: boolean;
+}
+
+export interface CreateChapterRequest {
+    token: string;
+    course_id: number;
+    data: CreateChapterInput;
+}
+
+export interface UpdateChapterInput {
+    title?: MultiLanguageText;
+    description?: MultiLanguageText;
+    sort_order?: number;
+    is_published?: boolean;
+}
+
+export interface UpdateChapterRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+    data: UpdateChapterInput;
+}
+
+export interface DeleteChapterRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+}
+
+export interface ReorderChapterRequest {
+    token: string;
+    course_id: number;
+    chapter_ids: number[]; // Ordered array of chapter IDs
+}
+
+// ============================================
+// Response Types
+// ============================================
+
+export interface ListChaptersResponse {
+    code: number;
+    message: string;
+    data: ChapterData[];
+    total: number;
+}
+
+export interface GetChapterResponse {
+    code: number;
+    message: string;
+    data: ChapterData;
+}
+
+export interface CreateChapterResponse {
+    code: number;
+    message: string;
+    data: ChapterData;
+}
+
+export interface UpdateChapterResponse {
+    code: number;
+    message: string;
+    data: ChapterData;
+}
+
+export interface DeleteChapterResponse {
+    code: number;
+    message: string;
+}
+
+export interface ReorderChapterResponse {
+    code: number;
+    message: string;
+    data: ChapterData[];
+}
+
+// ============================================
+// Chapter with Full Lessons (for detailed view)
+// ============================================
+
+export interface ChapterWithLessonsResponse {
+    code: number;
+    message: string;
+    data: ChapterData & {
+        lessons: LessonData[];
+    };
+}
+
+// ============================================
+// Lesson Request Types
+// ============================================
+
+export interface ListLessonsRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+}
+
+export interface GetLessonRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+    lesson_id: number;
+}
+
+export interface CreateLessonInput {
+    title: MultiLanguageText;
+    content?: MultiLanguageText;
+    type: 'VIDEO' | 'QUIZ';
+    duration_minutes?: number;
+    sort_order?: number;
+    is_sequential?: boolean;
+    prerequisite_lesson_ids?: number[];
+    require_pass_quiz?: boolean;
+    is_published?: boolean;
+}
+
+export interface CreateLessonRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+    data: CreateLessonInput;
+}
+
+export interface UpdateLessonInput {
+    title?: MultiLanguageText;
+    content?: MultiLanguageText;
+    type?: 'VIDEO' | 'QUIZ';
+    duration_minutes?: number;
+    sort_order?: number;
+    is_sequential?: boolean;
+    prerequisite_lesson_ids?: number[];
+    require_pass_quiz?: boolean;
+    is_published?: boolean;
+}
+
+export interface UpdateLessonRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+    lesson_id: number;
+    data: UpdateLessonInput;
+}
+
+export interface DeleteLessonRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+    lesson_id: number;
+}
+
+export interface ReorderLessonsRequest {
+    token: string;
+    course_id: number;
+    chapter_id: number;
+    lesson_ids: number[]; // Ordered array of lesson IDs
+}
+
+// ============================================
+// Lesson Response Types
+// ============================================
+
+export interface ListLessonsResponse {
+    code: number;
+    message: string;
+    data: LessonData[];
+    total: number;
+}
+
+export interface GetLessonResponse {
+    code: number;
+    message: string;
+    data: LessonData;
+}
+
+export interface CreateLessonResponse {
+    code: number;
+    message: string;
+    data: LessonData;
+}
+
+export interface UpdateLessonResponse {
+    code: number;
+    message: string;
+    data: LessonData;
+}
+
+export interface DeleteLessonResponse {
+    code: number;
+    message: string;
+}
+
+export interface ReorderLessonsResponse {
+    code: number;
+    message: string;
+    data: LessonData[];
+}
+
+// ============================================
+// Lesson with Full Details (attachments, quiz, progress)
+// ============================================
+
+export interface LessonWithDetailsResponse {
+    code: number;
+    message: string;
+    data: LessonData & {
+        attachments: LessonAttachmentData[];
+        quiz: QuizData | null;
+        progress: LessonProgressData[];
+    };
+}