feat: add recommended courses and quiz multiple attempts
- Add is_recommended field to Course model - Add allow_multiple_attempts field to Quiz model - Create RecommendedCoursesController for admin management - List all approved courses - Get course by ID - Toggle recommendation status - Add is_recommended filter to CoursesService.ListCourses - Add allow_multiple_attempts to quiz update and response types - Update ChaptersLessonService.updateQuiz to support allow_multiple_attempts
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JakkrapartXD
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17 changed files with 3963 additions and 5 deletions
235
Backend/src/services/RecommendedCourses.service.ts
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235
Backend/src/services/RecommendedCourses.service.ts
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import { prisma } from '../config/database';
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import { config } from '../config';
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import { logger } from '../config/logger';
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import { NotFoundError, ValidationError } from '../middleware/errorHandler';
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import jwt from 'jsonwebtoken';
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import { getPresignedUrl } from '../config/minio';
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import {
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ListApprovedCoursesResponse,
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GetCourseByIdResponse,
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ToggleRecommendedResponse,
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RecommendedCourseData
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} from '../types/RecommendedCourses.types';
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import { auditService } from './audit.service';
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import { AuditAction } from '@prisma/client';
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export class RecommendedCoursesService {
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/**
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* List all approved courses (for admin to manage recommendations)
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*/
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static async listApprovedCourses(): Promise<ListApprovedCoursesResponse> {
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try {
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const courses = await prisma.course.findMany({
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where: { status: 'APPROVED' },
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orderBy: [
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{ is_recommended: 'desc' },
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{ updated_at: 'desc' }
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],
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include: {
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category: {
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select: { id: true, name: true }
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},
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creator: {
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select: { id: true, username: true, email: true }
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},
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instructors: {
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include: {
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user: {
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select: { id: true, username: true, email: true }
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}
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}
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},
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chapters: {
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include: {
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lessons: true
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}
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}
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}
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});
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const data = await Promise.all(courses.map(async (course) => {
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let thumbnail_presigned_url: string | null = null;
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if (course.thumbnail_url) {
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try {
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thumbnail_presigned_url = await getPresignedUrl(course.thumbnail_url, 3600);
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} catch (err) {
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logger.warn(`Failed to generate presigned URL for thumbnail: ${err}`);
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}
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}
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return {
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id: course.id,
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title: course.title as { th: string; en: string },
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slug: course.slug,
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description: course.description as { th: string; en: string },
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thumbnail_url: thumbnail_presigned_url,
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price: Number(course.price),
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is_free: course.is_free,
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have_certificate: course.have_certificate,
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is_recommended: course.is_recommended,
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status: course.status,
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created_at: course.created_at,
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updated_at: course.updated_at,
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creator: course.creator,
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category: course.category ? {
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id: course.category.id,
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name: course.category.name as { th: string; en: string }
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} : null,
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instructors: course.instructors.map(i => ({
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user_id: i.user_id,
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is_primary: i.is_primary,
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user: i.user
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})),
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chapters_count: course.chapters.length,
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lessons_count: course.chapters.reduce((sum, ch) => sum + ch.lessons.length, 0)
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} as RecommendedCourseData;
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}));
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return {
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code: 200,
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message: 'Approved courses retrieved successfully',
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data,
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total: data.length
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};
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} catch (error) {
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logger.error('Failed to list approved courses', { error });
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throw error;
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}
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}
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/**
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* Get course by ID (for admin to view details)
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*/
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static async getCourseById(courseId: number): Promise<GetCourseByIdResponse> {
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try {
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const course = await prisma.course.findUnique({
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where: { id: courseId },
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include: {
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category: {
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select: { id: true, name: true }
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},
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creator: {
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select: { id: true, username: true, email: true }
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},
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instructors: {
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include: {
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user: {
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select: { id: true, username: true, email: true }
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}
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}
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},
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chapters: {
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include: {
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lessons: true
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}
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}
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}
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});
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if (!course) {
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throw new NotFoundError('Course not found');
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}
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if (course.status !== 'APPROVED') {
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throw new ValidationError('Course is not approved');
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}
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// Generate presigned URL for thumbnail
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let thumbnail_presigned_url: string | null = null;
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if (course.thumbnail_url) {
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try {
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thumbnail_presigned_url = await getPresignedUrl(course.thumbnail_url, 3600);
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} catch (err) {
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logger.warn(`Failed to generate presigned URL for thumbnail: ${err}`);
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}
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}
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const data: RecommendedCourseData = {
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id: course.id,
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title: course.title as { th: string; en: string },
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slug: course.slug,
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description: course.description as { th: string; en: string },
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thumbnail_url: thumbnail_presigned_url,
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price: Number(course.price),
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is_free: course.is_free,
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have_certificate: course.have_certificate,
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is_recommended: course.is_recommended,
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status: course.status,
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created_at: course.created_at,
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updated_at: course.updated_at,
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creator: course.creator,
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category: course.category ? {
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id: course.category.id,
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name: course.category.name as { th: string; en: string }
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} : null,
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instructors: course.instructors.map(i => ({
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user_id: i.user_id,
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is_primary: i.is_primary,
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user: i.user
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})),
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chapters_count: course.chapters.length,
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lessons_count: course.chapters.reduce((sum, ch) => sum + ch.lessons.length, 0)
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};
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return {
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code: 200,
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message: 'Course retrieved successfully',
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data
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};
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} catch (error) {
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logger.error('Failed to get course by ID', { error });
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throw error;
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}
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}
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/**
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* Toggle course recommendation status
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*/
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static async toggleRecommended(
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token: string,
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courseId: number,
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isRecommended: boolean
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): Promise<ToggleRecommendedResponse> {
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try {
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const decoded = jwt.verify(token, config.jwt.secret) as { id: number };
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const course = await prisma.course.findUnique({ where: { id: courseId } });
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if (!course) {
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throw new NotFoundError('Course not found');
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}
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if (course.status !== 'APPROVED') {
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throw new ValidationError('Only approved courses can be recommended');
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}
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const updatedCourse = await prisma.course.update({
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where: { id: courseId },
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data: { is_recommended: isRecommended }
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});
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// Audit log
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await auditService.logSync({
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userId: decoded.id,
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action: isRecommended ? AuditAction.UPDATE_COURSE : AuditAction.UPDATE_COURSE,
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entityType: 'Course',
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entityId: courseId,
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oldValue: { is_recommended: course.is_recommended },
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newValue: { is_recommended: isRecommended },
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metadata: { action: 'toggle_recommended' }
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});
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return {
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code: 200,
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message: `Course ${isRecommended ? 'marked as recommended' : 'unmarked as recommended'} successfully`,
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data: {
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id: updatedCourse.id,
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is_recommended: updatedCourse.is_recommended
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}
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};
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} catch (error) {
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logger.error('Failed to toggle recommended status', { error });
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throw error;
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}
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}
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}
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