387 lines
15 KiB
Vue
387 lines
15 KiB
Vue
<script setup lang="ts">
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/**
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* @file learning.vue
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* @description หน้าเรียนออนไลน์ (Classroom Interface)
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* จัดการแสดงผลวิดีโอรายการบทเรียน และติดตามความคืบหน้า
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* ออกแบบให้เหมือนระบบ LMS มาตรฐาน
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*/
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definePageMeta({
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layout: false, // Custom layout defined within this component
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middleware: 'auth'
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})
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useHead({
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title: 'ห้องเรียนออนไลน์ - e-Learning'
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})
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const route = useRoute()
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const { t } = useI18n()
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const { fetchCourseLearningInfo, fetchLessonContent, saveVideoProgress, markLessonComplete, checkLessonAccess } = useCourse()
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// State
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const sidebarOpen = ref(false)
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const courseId = computed(() => Number(route.query.course_id))
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// ==========================================
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// 1. ตัวแปร State (สถานะของ UI)
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// ==========================================
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// courseData: เก็บข้อมูลโครงสร้างคอร์ส (บทเรียนต่างๆ)
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const courseData = ref<any>(null)
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// currentLesson: บทเรียนที่กำลังเรียนอยู่ปัจจุบัน
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const currentLesson = ref<any>(null)
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const isLoading = ref(true) // โหลดข้อมูลคอร์ส
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const isLessonLoading = ref(false) // โหลดเนื้อหาบทเรียน
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// Video Player State (สถานะวิดีโอ)
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const videoRef = ref<HTMLVideoElement | null>(null)
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const isPlaying = ref(false)
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const videoProgress = ref(0)
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const currentTime = ref(0)
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const duration = ref(0)
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const saveProgressInterval = ref<any>(null) // ตัวแปรเก็บ setInterval สำหรับบันทึกความคืบหน้าอัตโนมัติ
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// Helper for localization
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const getLocalizedText = (text: any) => {
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if (!text) return ''
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if (typeof text === 'string') return text
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return text.th || text.en || ''
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}
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const toggleSidebar = () => {
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sidebarOpen.value = !sidebarOpen.value
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}
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// Logic loadLesson แยกออกมา
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const handleLessonSelect = (lessonId: number) => {
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loadLesson(lessonId)
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// Close sidebar on mobile when selecting a lesson
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if (import.meta.client && window.innerWidth <= 1024) {
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sidebarOpen.value = false
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}
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}
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// Data Fetching
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// ==========================================
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// 2. ฟังก์ชันโหลดข้อมูล (Data Fetching)
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// ==========================================
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// โหลดโครงสร้างคอร์สและบทเรียนทั้งหมด
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const loadCourseData = async () => {
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if (!courseId.value) return
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isLoading.value = true
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try {
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const res = await fetchCourseLearningInfo(courseId.value)
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if (res.success) {
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courseData.value = res.data
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// Auto-load logic: ถ้ายังไม่ได้เลือกบทเรียน ให้โหลดบทแรกที่ไม่ล็อคมาแสดง
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if (!currentLesson.value) {
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const firstChapter = res.data.chapters[0]
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if (firstChapter && firstChapter.lessons.length > 0) {
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// Find first unlocked or just first
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const availableLesson = firstChapter.lessons.find((l: any) => !l.is_locked) || firstChapter.lessons[0]
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loadLesson(availableLesson.id)
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}
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}
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}
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} catch (error) {
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console.error('Error loading course:', error)
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} finally {
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isLoading.value = false
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}
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}
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const loadLesson = async (lessonId: number) => {
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if (currentLesson.value?.id === lessonId) return
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// Clear previous video state
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isPlaying.value = false
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videoProgress.value = 0
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currentTime.value = 0
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if (videoRef.value) {
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videoRef.value.pause()
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videoRef.value.currentTime = 0
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}
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isLessonLoading.value = true
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try {
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// Optional: Check access first
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const accessRes = await checkLessonAccess(courseId.value, lessonId)
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if (accessRes.success && !accessRes.data.is_accessible) {
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alert(t('classroom.notAvailable'))
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isLessonLoading.value = false
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return
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}
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const res = await fetchLessonContent(courseId.value, lessonId)
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if (res.success) {
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currentLesson.value = res.data
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// Restore progress if available
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if (res.progress) {
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// Wait for video metadata to load usually, but set state
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// We might set currentTime once metadata loaded
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if (res.progress.video_progress_seconds > 0) {
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currentTime.value = res.progress.video_progress_seconds
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// We will apply this to videoRef locally when it is ready
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}
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}
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}
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} catch (error) {
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console.error('Error loading lesson:', error)
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} finally {
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isLessonLoading.value = false
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}
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}
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const onVideoMetadataLoaded = () => {
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if (videoRef.value && currentLesson.value) {
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// Restore time if needed
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if (currentTime.value > 0) {
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videoRef.value.currentTime = currentTime.value
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}
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}
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}
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const togglePlay = () => {
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if (!videoRef.value) return
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if (isPlaying.value) videoRef.value.pause()
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else videoRef.value.play()
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isPlaying.value = !isPlaying.value
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}
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const updateProgress = () => {
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if (!videoRef.value) return
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currentTime.value = videoRef.value.currentTime
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duration.value = videoRef.value.duration
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videoProgress.value = (currentTime.value / duration.value) * 100
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// Throttle save progress logic is handled in watcher or separate interval usually,
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// but let's check if we should save periodically here for simplicity or use specific events
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}
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const videoSrc = computed(() => {
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if (!currentLesson.value) return ''
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const content = getLocalizedText(currentLesson.value.content)
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// Check if content looks like a URL (starts with http/https or /)
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// And doesn't contain obvious text indicators
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if (content && (content.startsWith('http') || content.startsWith('/')) && !content.includes(' ')) {
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return content
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}
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return ''
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})
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// ==========================================
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// 3. ระบบบันทึกความคืบหน้า (Progress Tracking)
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// ==========================================
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// บันทึกอัตโนมัติทุกๆ 10 วินาทีเมื่อเล่นวิดีโอ
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watch(() => isPlaying.value, (playing) => {
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if (playing) {
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saveProgressInterval.value = setInterval(() => {
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if (videoRef.value && currentLesson.value) {
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// Send integers to avoid potential backend float issues
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saveVideoProgress(
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currentLesson.value.id,
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Math.floor(videoRef.value.currentTime),
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Math.floor(videoRef.value.duration || 0)
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)
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}
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}, 10000) // Every 10 seconds
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} else {
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clearInterval(saveProgressInterval.value)
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// Save one last time on pause
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if (videoRef.value && currentLesson.value) {
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saveVideoProgress(
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currentLesson.value.id,
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Math.floor(videoRef.value.currentTime),
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Math.floor(videoRef.value.duration || 0)
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)
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}
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}
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})
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// เมื่อวิดีโอจบ ให้บันทึกว่าเรียนจบ (Complete)
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const onVideoEnded = async () => {
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isPlaying.value = false
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if (currentLesson.value) {
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await markLessonComplete(courseId.value, currentLesson.value.id)
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// โหลดข้อมูลคอร์สใหม่เพื่ออัปเดตสถานะติ๊กถูกด้านข้าง
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await loadCourseData()
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// Auto play next logic could go here
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}
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}
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const formatTime = (time: number) => {
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const m = Math.floor(time / 60)
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const s = Math.floor(time % 60)
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return `${m}:${s.toString().padStart(2, '0')}`
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}
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const currentTimeDisplay = computed(() => formatTime(currentTime.value))
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const durationDisplay = computed(() => formatTime(duration.value || 0))
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const seek = (e: MouseEvent) => {
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if (!videoRef.value) return
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const rect = (e.currentTarget as HTMLElement).getBoundingClientRect()
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const percent = (e.clientX - rect.left) / rect.width
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videoRef.value.currentTime = percent * videoRef.value.duration
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}
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onMounted(() => {
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loadCourseData()
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})
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onBeforeUnmount(() => {
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clearInterval(saveProgressInterval.value)
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})
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</script>
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<template>
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<q-layout view="hHh LpR lFf" class="bg-[var(--bg-body)] text-[var(--text-main)]">
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<!-- Header -->
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<q-header bordered class="bg-[var(--bg-surface)] border-b border-gray-200 dark:border-white/5 text-[var(--text-main)] h-14">
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<q-toolbar>
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<q-btn flat round dense icon="menu" class="lg:hidden mr-2" @click="toggleSidebar" />
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<NuxtLink
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to="/dashboard/my-courses"
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class="inline-flex items-center gap-2 text-slate-900 dark:text-white hover:text-blue-600 dark:hover:text-blue-300 transition-all font-black text-sm md:text-base group mr-4"
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>
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<q-icon name="arrow_back" size="24px" class="transition-transform group-hover:-translate-x-1" />
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<span>{{ $t('classroom.backToDashboard') }}</span>
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</NuxtLink>
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<q-toolbar-title class="text-base font-bold text-center lg:text-left truncate text-slate-900 dark:text-white">
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{{ courseData ? getLocalizedText(courseData.course.title) : $t('classroom.loadingTitle') }}
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</q-toolbar-title>
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<div class="flex items-center gap-2">
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<!-- Right actions -->
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</div>
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</q-toolbar>
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</q-header>
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<!-- Sidebar (Curriculum) -->
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<q-drawer
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v-model="sidebarOpen"
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show-if-above
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bordered
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side="left"
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:width="320"
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:breakpoint="1024"
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class="bg-[var(--bg-surface)]"
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content-class="bg-[var(--bg-surface)]"
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>
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<div v-if="courseData" class="h-full scroll">
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<q-list class="pb-10">
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<template v-for="chapter in courseData.chapters" :key="chapter.id">
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<q-item-label header class="bg-slate-100 dark:bg-slate-800 text-[var(--text-main)] font-bold sticky top-0 z-10 border-b dark:border-white/5 text-sm py-4">
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{{ getLocalizedText(chapter.title) }}
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</q-item-label>
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<q-item
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v-for="lesson in chapter.lessons"
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:key="lesson.id"
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clickable
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v-ripple
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:active="currentLesson?.id === lesson.id"
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active-class="bg-blue-50 text-blue-700 dark:bg-blue-900/20 dark:text-blue-200 font-medium"
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class="border-b border-gray-50 dark:border-white/5"
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@click="!lesson.is_locked && handleLessonSelect(lesson.id)"
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:disable="lesson.is_locked"
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>
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<q-item-section avatar v-if="lesson.is_locked">
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<q-icon name="lock" size="xs" color="grey" />
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</q-item-section>
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<q-item-section>
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<q-item-label class="text-sm md:text-base line-clamp-2 text-[var(--text-main)]">
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{{ getLocalizedText(lesson.title) }}
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</q-item-label>
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</q-item-section>
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<q-item-section side>
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<q-icon v-if="lesson.progress?.is_completed" name="check_circle" color="positive" size="xs" />
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<q-icon v-else-if="currentLesson?.id === lesson.id" name="play_circle" color="primary" size="xs" />
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<q-icon v-else name="radio_button_unchecked" color="grey-4" size="xs" />
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</q-item-section>
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</q-item>
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</template>
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</q-list>
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</div>
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<div v-else-if="isLoading" class="p-6 text-center text-slate-500">
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<q-spinner color="primary" size="2em" />
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<div class="mt-2 text-xs">{{ $t('classroom.loadingCurriculum') }}</div>
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</div>
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</q-drawer>
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<!-- Main Content -->
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<q-page-container class="bg-white dark:bg-slate-900">
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<q-page class="flex flex-col h-full bg-slate-50 dark:bg-[#0B0F1A]">
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<!-- Video Player & Content Area -->
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<div class="w-full max-w-7xl mx-auto p-4 md:p-6 flex-grow">
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<!-- Video Player -->
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<div v-if="currentLesson" class="bg-black rounded-xl overflow-hidden shadow-lg mb-6 aspect-video relative group">
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<video
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ref="videoRef"
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v-if="videoSrc"
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:src="videoSrc"
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class="w-full h-full object-contain"
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@click="togglePlay"
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@timeupdate="updateProgress"
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@loadedmetadata="onVideoMetadataLoaded"
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@ended="onVideoEnded"
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/>
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<div v-else class="flex items-center justify-center h-full text-white/50 bg-slate-900">
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<div class="text-center">
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<q-icon name="article" size="xl" />
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<p class="mt-2">{{ $t('classroom.readingMaterial') }}</p>
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</div>
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</div>
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<!-- Custom Controls Overlay (Simplified) -->
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<div class="absolute bottom-0 left-0 right-0 p-4 bg-gradient-to-t from-black/80 to-transparent transition-opacity opacity-0 group-hover:opacity-100" v-if="videoSrc">
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<div class="flex items-center gap-4 text-white">
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<q-btn flat round dense :icon="isPlaying ? 'pause' : 'play_arrow'" @click.stop="togglePlay" />
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<div class="relative flex-grow h-1 bg-white/30 rounded cursor-pointer" @click="seek">
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<div class="absolute top-0 left-0 h-full bg-blue-500 rounded" :style="{ width: videoProgress + '%' }"></div>
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</div>
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<span class="text-xs font-mono">{{ currentTimeDisplay }} / {{ durationDisplay }}</span>
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</div>
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</div>
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</div>
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<!-- Lesson Info -->
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<div v-if="currentLesson" class="bg-[var(--bg-surface)] p-6 rounded-2xl shadow-sm border border-[var(--border-color)] mt-6">
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<!-- ใช้สีจากตัวแปรกลาง: จะแยกโหมดให้อัตโนมัติ (สว่าง=ดำ / มืด=ขาว) -->
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<h1 class="text-2xl md:text-3xl font-bold mb-3 text-[var(--text-main)]">{{ getLocalizedText(currentLesson.title) }}</h1>
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<p class="text-[var(--text-secondary)] text-base md:text-lg" v-if="currentLesson.description">{{ getLocalizedText(currentLesson.description) }}</p>
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<!-- Lesson Content Area -->
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<div v-if="!videoSrc && currentLesson.content" class="mt-6 prose dark:prose-invert max-w-none p-6 bg-[var(--bg-elevated)] rounded-xl border border-[var(--border-color)]">
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<div v-html="getLocalizedText(currentLesson.content)" class="text-base md:text-lg leading-relaxed text-[var(--text-main)]"></div>
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</div>
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</div>
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</div>
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</q-page>
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</q-page-container>
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</q-layout>
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</template>
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<style>
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.mobile-hide-label .q-btn__content span {
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display: none;
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}
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@media (min-width: 768px) {
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.mobile-hide-label .q-btn__content span {
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display: inline;
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margin-left: 8px;
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}
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}
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</style>
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