update
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Ken
335
controllers/chapterController.js
Normal file
335
controllers/chapterController.js
Normal file
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const { Chapter, Subject, Lesson } = require('../models');
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const { cacheUtils } = require('../config/redis');
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/**
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* Chapter Controller - Quản lý chương học
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*/
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class ChapterController {
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/**
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* Get all chapters with pagination
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*/
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async getAllChapters(req, res, next) {
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try {
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const { page = 1, limit = 20, subject_id, is_published } = req.query;
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const offset = (page - 1) * limit;
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const cacheKey = `chapters:list:${page}:${limit}:${subject_id || 'all'}:${is_published || 'all'}`;
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const cached = await cacheUtils.get(cacheKey);
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if (cached) {
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return res.json({
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success: true,
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data: cached,
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cached: true,
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});
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}
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const where = {};
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if (subject_id) where.subject_id = subject_id;
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if (is_published !== undefined) where.is_published = is_published === 'true';
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const { count, rows } = await Chapter.findAndCountAll({
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where,
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include: [
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{
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model: Subject,
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as: 'subject',
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attributes: ['id', 'subject_name', 'subject_code'],
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},
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],
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limit: parseInt(limit),
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offset: parseInt(offset),
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order: [['display_order', 'ASC'], ['chapter_number', 'ASC']],
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});
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const result = {
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chapters: rows,
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pagination: {
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total: count,
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page: parseInt(page),
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limit: parseInt(limit),
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totalPages: Math.ceil(count / limit),
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},
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};
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await cacheUtils.set(cacheKey, result, 1800);
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res.json({
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success: true,
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data: result,
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cached: false,
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});
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} catch (error) {
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next(error);
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}
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}
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/**
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* Get chapter by ID
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*/
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async getChapterById(req, res, next) {
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try {
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const { id } = req.params;
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const { include_lessons } = req.query;
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const cacheKey = `chapter:${id}:${include_lessons || 'no'}`;
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const cached = await cacheUtils.get(cacheKey);
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if (cached) {
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return res.json({
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success: true,
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data: cached,
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cached: true,
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});
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}
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const includeOptions = [
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{
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model: Subject,
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as: 'subject',
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attributes: ['id', 'subject_name', 'subject_code', 'description'],
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},
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];
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if (include_lessons === 'true') {
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includeOptions.push({
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model: Lesson,
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as: 'lessons',
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where: { is_published: true },
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required: false,
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order: [['display_order', 'ASC']],
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});
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}
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const chapter = await Chapter.findByPk(id, {
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include: includeOptions,
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});
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if (!chapter) {
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return res.status(404).json({
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success: false,
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message: 'Chapter not found',
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});
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}
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await cacheUtils.set(cacheKey, chapter, 3600);
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res.json({
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success: true,
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data: chapter,
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cached: false,
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});
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} catch (error) {
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next(error);
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}
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}
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/**
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* Create new chapter
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*/
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async createChapter(req, res, next) {
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try {
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const {
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subject_id,
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chapter_number,
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chapter_title,
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chapter_description,
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duration_minutes,
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is_published,
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display_order,
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} = req.body;
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// Validate required fields
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if (!subject_id || !chapter_number || !chapter_title) {
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return res.status(400).json({
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success: false,
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message: 'subject_id, chapter_number, and chapter_title are required',
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});
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}
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// Check if subject exists
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const subject = await Subject.findByPk(subject_id);
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if (!subject) {
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return res.status(404).json({
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success: false,
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message: 'Subject not found',
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});
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}
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const chapter = await Chapter.create({
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subject_id,
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chapter_number,
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chapter_title,
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chapter_description,
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duration_minutes,
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is_published: is_published !== undefined ? is_published : false,
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display_order: display_order || 0,
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});
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// Clear cache
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await cacheUtils.deletePattern('chapters:*');
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res.status(201).json({
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success: true,
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data: chapter,
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message: 'Chapter created successfully',
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});
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} catch (error) {
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next(error);
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}
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}
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/**
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* Update chapter
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*/
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async updateChapter(req, res, next) {
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try {
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const { id } = req.params;
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const {
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chapter_number,
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chapter_title,
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chapter_description,
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duration_minutes,
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is_published,
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display_order,
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} = req.body;
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const chapter = await Chapter.findByPk(id);
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if (!chapter) {
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return res.status(404).json({
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success: false,
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message: 'Chapter not found',
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});
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}
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await chapter.update({
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...(chapter_number !== undefined && { chapter_number }),
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...(chapter_title !== undefined && { chapter_title }),
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...(chapter_description !== undefined && { chapter_description }),
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...(duration_minutes !== undefined && { duration_minutes }),
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...(is_published !== undefined && { is_published }),
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...(display_order !== undefined && { display_order }),
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});
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// Clear cache
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await cacheUtils.deletePattern('chapters:*');
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await cacheUtils.deletePattern(`chapter:${id}*`);
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res.json({
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success: true,
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data: chapter,
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message: 'Chapter updated successfully',
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});
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} catch (error) {
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next(error);
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}
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}
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/**
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* Delete chapter
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*/
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async deleteChapter(req, res, next) {
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try {
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const { id } = req.params;
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const chapter = await Chapter.findByPk(id);
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if (!chapter) {
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return res.status(404).json({
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success: false,
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message: 'Chapter not found',
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});
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}
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// Check if chapter has lessons
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const lessonsCount = await Lesson.count({ where: { chapter_id: id } });
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if (lessonsCount > 0) {
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return res.status(400).json({
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success: false,
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message: `Cannot delete chapter. It has ${lessonsCount} lesson(s). Delete lessons first.`,
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});
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}
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await chapter.destroy();
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// Clear cache
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await cacheUtils.deletePattern('chapters:*');
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await cacheUtils.deletePattern(`chapter:${id}*`);
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res.json({
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success: true,
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message: 'Chapter deleted successfully',
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});
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} catch (error) {
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next(error);
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}
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}
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/**
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* Get lessons in a chapter
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*/
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async getLessonsByChapter(req, res, next) {
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try {
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const { id } = req.params;
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const { page = 1, limit = 20, is_published } = req.query;
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const offset = (page - 1) * limit;
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const cacheKey = `chapter:${id}:lessons:${page}:${limit}:${is_published || 'all'}`;
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const cached = await cacheUtils.get(cacheKey);
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if (cached) {
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return res.json({
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success: true,
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data: cached,
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cached: true,
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});
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}
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const chapter = await Chapter.findByPk(id);
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if (!chapter) {
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return res.status(404).json({
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success: false,
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message: 'Chapter not found',
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});
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}
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const where = { chapter_id: id };
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if (is_published !== undefined) where.is_published = is_published === 'true';
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const { count, rows } = await Lesson.findAndCountAll({
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where,
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limit: parseInt(limit),
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offset: parseInt(offset),
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order: [['display_order', 'ASC'], ['lesson_number', 'ASC']],
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});
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const result = {
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chapter: {
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id: chapter.id,
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chapter_title: chapter.chapter_title,
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chapter_number: chapter.chapter_number,
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},
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lessons: rows,
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pagination: {
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total: count,
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page: parseInt(page),
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limit: parseInt(limit),
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totalPages: Math.ceil(count / limit),
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},
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};
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await cacheUtils.set(cacheKey, result, 1800);
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res.json({
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success: true,
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data: result,
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cached: false,
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});
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} catch (error) {
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next(error);
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}
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}
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}
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module.exports = new ChapterController();
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Reference in New Issue
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