twotalesanimation
a834caa511
Deploy Vault CMS / deploy (push) Failing after 38s
Watch progress and unlocking: - Player samples the playhead and reports the ranges actually played, so skipped sections earn no credit and early plays are not lost - Server merges ranges into compact segment rows; progress never regresses - Single 80% unlock rule enforced server-side (lib/watch-progress.ts); the Unlock button and automatic unlock now agree - Lock state and progress bar update live from each progress save - Playlist is derived from the video, so unlocks work for shared playlists and for links from watch history and liked videos - First/previous video decided by playlist position, not index numbers Access control: - Video API and HLS/MP4 routes require a signed-in viewer who is enrolled and has the video unlocked; thumbnails require sign-in - Enrolment sync reads course codes from the allow-list, not the request - /api/admin/meta is admin-only - Account status, role and levels are re-checked from the database during a session, so deactivated students lose access within a minute Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
688 lines
24 KiB
TypeScript
688 lines
24 KiB
TypeScript
'use client';
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import React from 'react';
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import { useSearchParams, useRouter } from 'next/navigation';
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import { usePlaylist } from '@/hooks/usePlaylist';
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import { useVideo } from '@/hooks/useVideo';
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import {
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Card,
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CardContent,
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CardFooter,
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CardHeader,
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CardTitle,
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} from '@/components/ui/card';
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import { Badge } from '@/components/ui/badge';
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import { SegmentedProgressBar, WatchSegment } from '@/components/segmented-progress-bar';
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import { AppSidebar } from '@/components/app-sidebar';
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import { SiteHeader } from '@/components/site-header';
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import { CommentsSection } from '@/components/comments-section';
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import { formatDistanceToNow } from 'date-fns';
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import { Lock, Heart, Edit } from 'lucide-react';
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import { SidebarInset, SidebarProvider } from '@/components/ui/sidebar';
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import { Button } from '@/components/ui/button';
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import { HlsPlayer } from '@/components/hls';
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import { useSession } from 'next-auth/react';
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import Image from 'next/image';
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import { toast } from 'sonner';
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type VideoFromApi = {
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id: string;
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title: string;
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description?: string | null;
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durationSec?: number | null;
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duration?: string | null;
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thumbnail?: string | null;
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url?: string | null;
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locked?: boolean;
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createdAt?: string | null;
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transcodingStatus?: string;
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videoUrls?: {
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hlsUrl: string | null;
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mp4Url: string;
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};
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uploader?: {
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id: string;
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name?: string;
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image?: string;
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} | null;
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};
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type ProgressResult = {
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progress?: { percent?: number };
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segments?: WatchSegment[];
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unlockedNext?: { id: string; title: string } | null;
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};
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type TrackedVideo = { videoId: string; durationSec: number | null };
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/**
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* Records which parts of a video were actually played and reports them to
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* /api/progress.
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*
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* It samples the <video> element on a timer rather than relying on media
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* events, so it keeps working when the element is swapped (one per video) or
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* when playback starts before anything else on the page has settled. A sample
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* only counts as watched when the playhead moved forward by no more than the
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* wall-clock time that passed, which excludes seeks and scrubbing.
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*/
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export function useWatchTracker(
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videoRef: React.RefObject<HTMLVideoElement | null>,
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opts: {
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sendIntervalMs?: number;
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sampleIntervalMs?: number;
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onResult?: (videoId: string, result: ProgressResult) => void;
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} = {}
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) {
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const sendIntervalMs = opts.sendIntervalMs ?? 5000;
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const sampleIntervalMs = opts.sampleIntervalMs ?? 500;
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const onResultRef = React.useRef(opts.onResult);
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React.useEffect(() => {
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onResultRef.current = opts.onResult;
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});
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const activeRef = React.useRef<TrackedVideo | null>(null);
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const rangesRef = React.useRef<Array<[number, number]>>([]);
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const lastSampleRef = React.useRef<{ el: HTMLVideoElement; time: number; wall: number } | null>(null);
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const lastPosRef = React.useRef(0);
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const elementDurationRef = React.useRef(0);
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const dirtyRef = React.useRef(false);
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const reset = React.useCallback((next: TrackedVideo | null) => {
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activeRef.current = next;
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rangesRef.current = [];
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lastSampleRef.current = null;
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lastPosRef.current = 0;
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elementDurationRef.current = 0;
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dirtyRef.current = false;
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}, []);
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const sample = React.useCallback(() => {
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const el = videoRef.current;
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if (!activeRef.current || !el || typeof el.currentTime !== 'number') {
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lastSampleRef.current = null;
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return;
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}
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const prev = lastSampleRef.current;
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const now = el.currentTime;
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const wall = performance.now();
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lastSampleRef.current = { el, time: now, wall };
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// First sample of a new element: nothing to compare against yet.
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if (!prev || prev.el !== el) return;
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lastPosRef.current = now;
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if (Number.isFinite(el.duration) && el.duration > 0) {
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elementDurationRef.current = el.duration;
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}
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if (el.seeking) return;
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const delta = now - prev.time;
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if (delta <= 0) return; // paused, or jumped backwards
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// Real playback cannot outrun the clock (timers may fire late in
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// background tabs, hence wall-clock time rather than the interval).
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const elapsedSec = (wall - prev.wall) / 1000;
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const maxAdvance = elapsedSec * Math.max(1, el.playbackRate || 1) + 0.75;
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if (delta > maxAdvance) return; // jumped forwards
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const ranges = rangesRef.current;
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const last = ranges[ranges.length - 1];
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if (last && Math.abs(last[1] - prev.time) < 0.01) {
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last[1] = now; // still in the same stretch of playback
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} else {
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ranges.push([prev.time, now]);
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}
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dirtyRef.current = true;
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}, [videoRef]);
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const flush = React.useCallback(async (keepalive = false) => {
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const active = activeRef.current;
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if (!active || !dirtyRef.current || rangesRef.current.length === 0) return;
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const duration = active.durationSec || Math.floor(elementDurationRef.current);
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if (!duration || duration <= 0) return; // metadata not loaded yet; try again next tick
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// Everything played this session is resent each time; the server merges,
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// so a dropped request loses nothing.
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const ranges = rangesRef.current.map(([s, e]) => [s, e]);
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dirtyRef.current = false;
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try {
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const res = await fetch('/api/progress', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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keepalive,
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body: JSON.stringify({
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videoId: active.videoId,
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ranges,
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lastPos: Math.floor(lastPosRef.current),
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duration,
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}),
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});
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const stillActive = activeRef.current?.videoId === active.videoId;
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if (!res.ok) {
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if (res.status === 404) {
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// Video was deleted: stop tracking it.
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if (stillActive) reset(null);
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} else if (stillActive) {
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dirtyRef.current = true;
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}
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return;
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}
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const json = await res.json().catch(() => null);
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if (json) onResultRef.current?.(active.videoId, json);
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} catch {
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if (activeRef.current?.videoId === active.videoId) dirtyRef.current = true;
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}
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}, [reset]);
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/** Begin tracking a video. Anything recorded for a previous video is dropped. */
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const start = React.useCallback((video: TrackedVideo) => reset(video), [reset]);
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/** Send what is left for the current video, then stop tracking it. */
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const stop = React.useCallback(() => {
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void flush(true);
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reset(null);
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}, [flush, reset]);
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React.useEffect(() => {
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const sampleTimer = window.setInterval(sample, sampleIntervalMs);
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const sendTimer = window.setInterval(() => void flush(), sendIntervalMs);
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// Leaving or hiding the page: get the latest progress out while we can.
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const flushNow = () => {
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sample();
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void flush(true);
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};
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const onVisibility = () => {
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if (document.visibilityState === 'hidden') flushNow();
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};
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document.addEventListener('visibilitychange', onVisibility);
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window.addEventListener('pagehide', flushNow);
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return () => {
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window.clearInterval(sampleTimer);
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window.clearInterval(sendTimer);
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document.removeEventListener('visibilitychange', onVisibility);
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window.removeEventListener('pagehide', flushNow);
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};
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}, [sample, flush, sampleIntervalMs, sendIntervalMs]);
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return { start, stop };
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}
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export default function Page() {
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const search = useSearchParams();
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const router = useRouter();
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const playlistIdParam = search.get('playlistId') ?? undefined;
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const videoId = search.get('videoId') ?? undefined;
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const { video, isLoading: videoLoading, error: videoError } = useVideo(videoId);
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// Links from watch history and liked videos carry no playlist; use the video's own.
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const { playlist, isLoading: playlistLoading } = usePlaylist(
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playlistIdParam ?? (video as any)?.playlistId ?? undefined
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);
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// Segments state for current video and playlist videos
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const [currentSegments, setCurrentSegments] = React.useState<WatchSegment[]>([]);
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const [playlistSegments, setPlaylistSegments] = React.useState<Record<string, WatchSegment[]>>({});
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const [currentProgress, setCurrentProgress] = React.useState(0);
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// Per-user unlock state
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const [userUnlocks, setUserUnlocks] = React.useState<Set<string>>(new Set()); // Set of unlocked videoIds
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const [unlockingVideo, setUnlockingVideo] = React.useState<string | null>(null); // videoId being unlocked
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const videoRef = React.useRef<HTMLVideoElement | null>(null);
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const trackedVideoIdRef = React.useRef<string | null>(null);
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const userUnlocksRef = React.useRef(userUnlocks);
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React.useEffect(() => {
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userUnlocksRef.current = userUnlocks;
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}, [userUnlocks]);
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// Every progress update returns the server's view: percentage, merged
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// segments, and the next video if this one just unlocked it.
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const handleProgressResult = React.useCallback((id: string, result: ProgressResult) => {
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const segments = result.segments;
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if (segments) {
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setPlaylistSegments((prev) => ({ ...prev, [id]: segments }));
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}
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if (id === trackedVideoIdRef.current) {
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if (segments) setCurrentSegments(segments);
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if (typeof result.progress?.percent === 'number') setCurrentProgress(result.progress.percent);
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}
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const unlocked = result.unlockedNext;
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if (unlocked && !userUnlocksRef.current.has(unlocked.id)) {
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setUserUnlocks((prev) => new Set(prev).add(unlocked.id));
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toast.success(`Unlocked: ${unlocked.title}`);
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}
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}, []);
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const tracker = useWatchTracker(videoRef, { onResult: handleProgressResult });
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const { start: startTracking, stop: stopTracking } = tracker;
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// Load saved progress for the current video. Live updates then arrive with
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// each progress save, so there is no need to poll.
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React.useEffect(() => {
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if (!videoId) return;
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let cancelled = false;
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const fetchSegments = async () => {
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try {
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const [res, progressRes] = await Promise.all([
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fetch(`/api/progress/segments?videoId=${videoId}`),
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fetch(`/api/progress?videoId=${videoId}`),
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]);
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if (cancelled) return;
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if (res.ok) {
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const data = await res.json();
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if (!cancelled) setCurrentSegments(data.segments ?? []);
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}
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if (progressRes.ok) {
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const data = await progressRes.json();
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if (!cancelled) setCurrentProgress(data.percent ?? 0);
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}
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} catch (err) {
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console.error('Failed to fetch segments:', err);
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}
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};
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setCurrentSegments([]);
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setCurrentProgress(0);
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fetchSegments();
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return () => {
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cancelled = true;
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};
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}, [videoId]);
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// Fetch segments for all playlist videos
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React.useEffect(() => {
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if (!playlist?.videos || playlist.videos.length === 0) return;
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const fetchPlaylistSegments = async () => {
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const segments: Record<string, WatchSegment[]> = {};
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for (const video of playlist.videos) {
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try {
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const res = await fetch(`/api/progress/segments?videoId=${video.id}`);
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if (res.ok) {
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const data = await res.json();
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segments[video.id] = data.segments ?? [];
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}
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} catch (err) {
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console.error(`Failed to fetch segments for video ${video.id}:`, err);
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}
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}
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// Keep anything newer that arrived from a progress save in the meantime.
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setPlaylistSegments((prev) => ({ ...segments, ...prev }));
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};
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setPlaylistSegments({});
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fetchPlaylistSegments();
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}, [playlist?.videos]);
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// Fetch user's VideoUnlock records
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React.useEffect(() => {
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const fetchUserUnlocks = async () => {
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try {
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const res = await fetch('/api/user/unlocks');
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if (res.ok) {
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const data = await res.json();
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const unlockedVideoIds = (data.unlocks?.map((u: any) => u.videoId) ?? []) as string[];
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// Merge, in case a progress save unlocked something while this loaded.
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setUserUnlocks((prev) => new Set([...prev, ...unlockedVideoIds]));
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}
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} catch (err) {
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console.error('Failed to fetch user unlocks:', err);
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}
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};
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fetchUserUnlocks();
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}, []);
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// Track whichever video is loaded; switching videos flushes the old one first.
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const loadedVideoId = video?.id ? String(video.id) : null;
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const loadedVideoDuration: number | null = video?.durationSec ?? null;
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React.useEffect(() => {
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if (!loadedVideoId) return;
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trackedVideoIdRef.current = loadedVideoId;
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startTracking({ videoId: loadedVideoId, durationSec: loadedVideoDuration });
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return () => {
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stopTracking();
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trackedVideoIdRef.current = null;
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};
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}, [loadedVideoId, loadedVideoDuration, startTracking, stopTracking]);
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const current: VideoFromApi = (video as VideoFromApi) ?? {
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id: 'loading',
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title: 'Loading…',
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duration: '0:00',
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thumbnail: '/01.jpg',
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url: '',
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};
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const fmt = (v: VideoFromApi) => {
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if (v.duration) return v.duration;
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if (!v.durationSec && v.durationSec !== 0) return '';
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const mins = Math.floor((v.durationSec ?? 0) / 60);
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const secs = Math.floor((v.durationSec ?? 0) % 60)
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.toString()
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.padStart(2, '0');
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return `${mins}:${secs}`;
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};
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// A video is open when it is the first in the playlist, marked instant
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// access, or unlocked for this user. The lecturer's lock overrides all three.
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const firstVideoId: string | undefined = playlist?.videos?.[0]?.id;
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const isAccessible = (v: VideoFromApi) =>
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!v.locked &&
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(!!(v as any).instantAccess || v.id === firstVideoId || userUnlocks.has(v.id));
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const openVideo = (v: VideoFromApi) => {
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router.push(`/videoplayer?playlistId=${playlist?.id}&videoId=${v.id}`);
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};
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// The server decides whether the unlock is earned and explains when it is not.
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const handleUnlock = async (v: VideoFromApi) => {
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if (unlockingVideo === v.id || v.locked) return;
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setUnlockingVideo(v.id);
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try {
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const res = await fetch('/api/user/unlocks', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ videoId: v.id }),
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});
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const data = await res.json().catch(() => ({}));
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if (!res.ok) {
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toast.error(data?.error ?? 'Could not unlock this video. Please try again.');
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return;
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}
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setUserUnlocks((prev) => new Set(prev).add(v.id));
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openVideo(v);
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} catch (err) {
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console.error('Error unlocking video:', err);
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toast.error('Could not unlock this video. Please try again.');
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} finally {
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setUnlockingVideo(null);
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}
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};
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const [isLiked, setIsLiked] = React.useState(false);
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const { data: session } = useSession();
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const isAdmin = (session as any)?.user?.role === 'admin' || (session as any)?.user?.role === 'superadmin';
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React.useEffect(() => {
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// Check if current video is liked on load
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if (current.id) {
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const checkLike = async () => {
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try {
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const res = await fetch(`/api/likes?videoId=${current.id}`);
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if (res.ok) {
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const data = await res.json();
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setIsLiked(data.isLiked);
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}
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} catch (err) {
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console.error('Failed to check if video is liked', err);
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}
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};
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checkLike();
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}
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}, [current.id]);
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const handleLike = async () => {
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const newLikedState = !isLiked;
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setIsLiked(newLikedState);
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try {
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const res = await fetch('/api/likes', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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videoId: current.id,
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isLiked: newLikedState,
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}),
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});
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if (!res.ok) {
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// Revert on error
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setIsLiked(!newLikedState);
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console.error('Failed to toggle like');
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}
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} catch (err) {
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// Revert on error
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setIsLiked(!newLikedState);
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console.error('Error toggling like', err);
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}
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};
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return (
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<SidebarProvider
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style={
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{
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'--sidebar-width': 'calc(var(--spacing) * 72)',
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'--header-height': 'calc(var(--spacing) * 12)',
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} as React.CSSProperties
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}
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>
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<AppSidebar variant="inset" />
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<SidebarInset>
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<SiteHeader />
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<div className="flex flex-1 flex-col">
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<div className="@container/main flex flex-1 gap-4 p-4 lg:p-6">
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<div className="flex-1 min-w-0">
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<Card className="mb-4">
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<CardContent className="p-0">
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<div className="relative w-full overflow-hidden">
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{videoLoading ? (
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<div className="flex items-center justify-center h-80">Loading video…</div>
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) : current.url ? (
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// HLS player with MP4 fallback
|
|
// Prefers HLS if transcoding is complete, falls back to MP4
|
|
<HlsPlayer
|
|
src={current.videoUrls?.hlsUrl || current.url}
|
|
fallbackSrc={current.url}
|
|
videoId={current.id}
|
|
ref={videoRef}
|
|
/>
|
|
) : (
|
|
<div className="flex items-center justify-center h-80 px-6 text-center">
|
|
{videoError?.message && !/^HTTP \d+$/.test(videoError.message)
|
|
? videoError.message
|
|
: 'Video not available'}
|
|
</div>
|
|
)}
|
|
</div>
|
|
</CardContent>
|
|
|
|
<CardFooter className="flex flex-col gap-4">
|
|
<div className="flex items-start justify-between w-full gap-4">
|
|
<div className="flex-1 flex gap-3">
|
|
{current.uploader?.image && (
|
|
<div className="relative w-12 h-12 rounded-full overflow-hidden shrink-0">
|
|
<Image
|
|
src={current.uploader.image}
|
|
alt={current.uploader.name ?? 'Uploader'}
|
|
fill
|
|
unoptimized
|
|
className="object-cover"
|
|
/>
|
|
</div>
|
|
)}
|
|
<div className="flex-1 min-w-0">
|
|
<CardTitle className="text-lg">{current.title}</CardTitle>
|
|
{current.uploader?.name && (
|
|
<p className="text-sm text-muted-foreground mt-1">
|
|
{current.uploader.name}
|
|
</p>
|
|
)}
|
|
{current.createdAt && (
|
|
<p className="text-xs text-muted-foreground">
|
|
Uploaded {formatDistanceToNow(new Date(current.createdAt), { addSuffix: true })}
|
|
</p>
|
|
)}
|
|
</div>
|
|
</div>
|
|
<div className="flex gap-2 shrink-0">
|
|
{isAdmin && (
|
|
<Button
|
|
variant="ghost"
|
|
size="sm"
|
|
onClick={() => router.push(`/admin/videos/${current.id}/edit`)}
|
|
>
|
|
<Edit className="w-4 h-4" />
|
|
Edit
|
|
</Button>
|
|
)}
|
|
<Button
|
|
variant="ghost"
|
|
size="sm"
|
|
onClick={handleLike}
|
|
className={isLiked ? 'text-red-500' : ''}
|
|
>
|
|
Like
|
|
<Heart
|
|
className="w-5 h-5"
|
|
fill={isLiked ? 'currentColor' : 'none'}
|
|
/>
|
|
</Button>
|
|
</div>
|
|
</div>
|
|
{current.description && (
|
|
<p className="text-sm text-muted-foreground w-full">
|
|
{current.description}
|
|
</p>
|
|
)}
|
|
<div className="w-full mt-4 pt-4 border-t">
|
|
<SegmentedProgressBar
|
|
segments={currentSegments}
|
|
duration={current.durationSec ?? 1}
|
|
percent={currentProgress}
|
|
height="md"
|
|
showTooltip={true}
|
|
/>
|
|
</div>
|
|
</CardFooter>
|
|
</Card>
|
|
|
|
<Card>
|
|
<CardContent>
|
|
<CommentsSection videoId={current.id} />
|
|
</CardContent>
|
|
</Card>
|
|
|
|
{/* <div className="grid grid-cols-1 gap-4 md:grid-cols-2 lg:grid-cols-3">
|
|
<Card>
|
|
<CardContent>
|
|
<h3 className="font-medium">Notes</h3>
|
|
<p className="mt-2 text-sm text-muted-foreground">
|
|
Keep lesson notes, transcript links, or chapter markers here.
|
|
</p>
|
|
</CardContent>
|
|
</Card>
|
|
|
|
<Card>
|
|
<CardContent>
|
|
<h3 className="font-medium">Resources</h3>
|
|
<ul className="mt-2 text-sm text-muted-foreground list-disc ml-5">
|
|
<li>Model files</li>
|
|
<li>Reference sheets</li>
|
|
<li>Assignments</li>
|
|
</ul>
|
|
</CardContent>
|
|
</Card>
|
|
</div> */}
|
|
</div>
|
|
|
|
<aside className="w-80 hidden lg:block">
|
|
<h2 className="text-sm font-semibold mb-3">Playlist</h2>
|
|
|
|
<div className="flex flex-col gap-3">
|
|
{playlistLoading ? (
|
|
<div>Loading playlist…</div>
|
|
) : (
|
|
playlist?.videos?.map((v: VideoFromApi) => {
|
|
const active = String(v.id) === String(current.id);
|
|
const accessible = isAccessible(v);
|
|
return (
|
|
<div
|
|
key={v.id}
|
|
className={`relative rounded-md border p-2 flex flex-col gap-2 cursor-pointer transition
|
|
${
|
|
active ? 'border-primary bg-muted' : 'border-transparent hover:border-border'
|
|
}`}
|
|
onClick={() => {
|
|
if (accessible) openVideo(v);
|
|
}}
|
|
>
|
|
<div className="flex items-center gap-3">
|
|
<div className="relative w-20 h-12 shrink-0 overflow-hidden rounded">
|
|
<img src={v.thumbnail ?? '/01.jpg'} alt={v.title} className="w-full h-full object-cover" loading="lazy" />
|
|
{!accessible ? (
|
|
<div className="absolute inset-0 bg-black/40 flex items-center justify-center">
|
|
<Lock className="w-5 h-5 text-white" />
|
|
</div>
|
|
) : null}
|
|
</div>
|
|
|
|
<div className="flex-1 min-w-0">
|
|
<div className="flex items-center justify-between">
|
|
<div className="text-sm font-medium truncate">{v.title}</div>
|
|
<Badge>{fmt(v)}</Badge>
|
|
</div>
|
|
<div className="text-xs text-muted-foreground truncate mt-1">
|
|
{active ? 'Now playing' : accessible ? 'Available' : 'Locked'}
|
|
</div>
|
|
</div>
|
|
|
|
|
|
{!accessible ? (
|
|
<div className="ml-2">
|
|
<Button
|
|
size="sm"
|
|
variant={v.locked ? "secondary" : "default"}
|
|
disabled={v.locked || unlockingVideo === v.id}
|
|
onClick={(e) => {
|
|
e.stopPropagation();
|
|
handleUnlock(v);
|
|
}}
|
|
>
|
|
{unlockingVideo === v.id ? 'Unlocking...' : v.locked ? 'Locked' : 'Unlock'}
|
|
</Button>
|
|
</div>
|
|
) : null}
|
|
</div>
|
|
|
|
<SegmentedProgressBar
|
|
segments={playlistSegments[v.id] ?? []}
|
|
duration={v.durationSec ?? 1}
|
|
percent={0}
|
|
height="sm"
|
|
showTooltip={false}
|
|
/>
|
|
</div>
|
|
);
|
|
})
|
|
)}
|
|
</div>
|
|
</aside>
|
|
</div>
|
|
</div>
|
|
</SidebarInset>
|
|
</SidebarProvider>
|
|
);
|
|
}
|