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import { useCallback, useEffect, useState } from 'react';
import type { RefObject } from 'react';
import type { SubtitleTrackResponse } from '@/types';
export type SubtitleControlsArgs = {
contentId: number;
subtitles: SubtitleTrackResponse[];
playerOpen: boolean;
videoRef: RefObject<HTMLVideoElement | null>;
shakaRef: RefObject<any>;
};
export function useSubtitleControls({
contentId,
subtitles,
playerOpen,
videoRef,
shakaRef}: SubtitleControlsArgs) {
const [selectedSubtitleIndex, setSelectedSubtitleIndex] = useState<number>(-1);
const [subtitleSize, setSubtitleSize] = useState<'sm' | 'md' | 'lg'>('md');
const applySubtitleSelection = useCallback(
(index: number) => {
// Prefer Shaka-managed tracks when player is active
const shakaPlayer = shakaRef.current;
if (shakaPlayer) {
try {
const anyPlayer = shakaPlayer as any;
const tracks = anyPlayer.getTextTracks?.() || [];
if (index >= 0 && index < tracks.length) {
anyPlayer.setTextTrackVisibility(true);
anyPlayer.selectTextTrack(tracks[index]);
setSelectedSubtitleIndex(index);
try {
localStorage.setItem(`iptv_subs_${contentId}`, String(index));
} catch {}
return;
}
} catch {
// fall through to native toggle
}
}
// Fallback to native <video> text tracks (MP4/native)
const v = videoRef.current;
if (!v) {
return;
}
const tracks = v.textTracks;
// Disable all tracks first
for (let i = 0; i < tracks.length; i++) {
tracks[i].mode = 'disabled';
}
// Enable the selected track
if (index >= 0 && index < tracks.length) {
const track = tracks[index];
track.mode = 'showing';
// Force reload if track has no cues loaded yet
if (!track.cues || track.cues.length === 0) {
// Try to force reload by toggling mode
track.mode = 'disabled';
setTimeout(() => {
track.mode = 'showing';
}, 100);
}
}
setSelectedSubtitleIndex(index);
try {
localStorage.setItem(`iptv_subs_${contentId}`, String(index));
} catch {}
},
[contentId, shakaRef, videoRef]
);
const disableAllSubtitles = useCallback(() => {
// Prefer Shaka when active
const shakaPlayer = shakaRef.current;
if (shakaPlayer) {
try {
(shakaPlayer as any).setTextTrackVisibility(false);
} catch {}
setSelectedSubtitleIndex(-1);
try {
localStorage.setItem(`iptv_subs_${contentId}`, String(-1));
} catch {}
return;
}
// Fallback to native
const v = videoRef.current;
if (!v) return;
const tracks = v.textTracks;
for (let i = 0; i < tracks.length; i++) {
tracks[i].mode = 'disabled';
}
setSelectedSubtitleIndex(-1);
try {
localStorage.setItem(`iptv_subs_${contentId}`, String(-1));
} catch {}
}, [contentId, shakaRef, videoRef]);
// Enhanced subtitle setup for native player
useEffect(() => {
if (!playerOpen) return;
const setupSubtitles = () => {
try {
const v = videoRef.current;
if (!v) return;
// Wait for text tracks to be loaded
if (v.textTracks.length === 0 && subtitles.length > 0) {
return false;
}
const saved = localStorage.getItem(`iptv_subs_${contentId}`);
if (saved !== null) {
const idx = parseInt(saved, 10);
if (Number.isFinite(idx) && idx >= -1) {
if (idx === -1) {
disableAllSubtitles();
} else if (idx < Math.min(subtitles.length, v.textTracks.length)) {
applySubtitleSelection(idx);
} else {
// Saved index is out of range, reset to first available
if (subtitles.length > 0 && v.textTracks.length > 0) {
applySubtitleSelection(0);
} else {
disableAllSubtitles();
}
}
return true;
}
}
// Default: enable first subtitle if available
if (subtitles.length > 0 && v.textTracks.length > 0) {
applySubtitleSelection(0);
} else {
disableAllSubtitles();
}
return true;
} catch (err) {
console.error('🎬 Error setting up subtitles:', err);
return true; // Stop retrying on error
}
};
// Try multiple times with increasing delays for native player
let attempts = 0;
const maxAttempts = 10;
const retryTimers: ReturnType<typeof setTimeout>[] = [];
const attemptSetup = () => {
attempts++;
const success = setupSubtitles();
if (!success && attempts < maxAttempts) {
const retryTimer = setTimeout(attemptSetup, 200 * attempts); // Increasing delays: 200ms, 400ms, 600ms, etc.
retryTimers.push(retryTimer);
}
};
// Start with immediate attempt, then use delays
const timer = setTimeout(attemptSetup, 100);
return () => {
clearTimeout(timer);
retryTimers.forEach((retryTimer) => clearTimeout(retryTimer));
};
}, [applySubtitleSelection, contentId, disableAllSubtitles, playerOpen, subtitles, videoRef]);
return {
selectedSubtitleIndex,
setSelectedSubtitleIndex,
subtitleSize,
setSubtitleSize,
applySubtitleSelection,
disableAllSubtitles};
}
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