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CloudMusicContext.jsx
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250 lines (217 loc) · 6.44 KB
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import React, {
createContext,
useContext,
useState,
useRef,
useEffect,
useCallback,
} from 'react';
import piml from 'piml';
const CloudMusicContext = createContext();
export const useCloudMusic = () => useContext(CloudMusicContext);
export const CloudMusicProvider = ({ children }) => {
const [isPlaying, setIsPlaying] = useState(false);
const [currentTrackIndex, setCurrentTrackIndex] = useState(0);
const [playlist, setPlaylist] = useState([]);
const [isPlayerOpen, setIsPlayerOpen] = useState(false);
const [repeatMode, setRepeatMode] = useState('off'); // off, all, one
const [isShuffle, setIsShuffle] = useState(false);
// Volume State
const [volume, setVolumeState] = useState(1); // 0.0 to 1.0
const [isMuted, setIsMuted] = useState(false);
const [previousVolume, setPreviousVolume] = useState(1);
// Audio Ref
const audioRef = useRef(null);
// Initialize Audio Object once
if (!audioRef.current) {
audioRef.current = new Audio();
// No crossOrigin or Web Audio API nodes to avoid silence with local/opaque sources
}
const [duration, setDuration] = useState(0);
const [currentTime, setCurrentTime] = useState(0);
// Fetch playlist from PIML
useEffect(() => {
const fetchMusics = async () => {
try {
const publicUrl = process.env.PUBLIC_URL || '';
const response = await fetch(`${publicUrl}/media_player/musics.piml`);
if (response.ok) {
const text = await response.text();
const parsed = piml.parse(text);
if (parsed && parsed.musics) {
setPlaylist(parsed.musics);
}
}
} catch (error) {
console.error('Error loading musics.piml:', error);
}
};
fetchMusics();
}, []);
// Helper to get random index
const getRandomIndex = useCallback((currentIndex, length) => {
if (length <= 1) return 0;
let newIndex = currentIndex;
while (newIndex === currentIndex) {
newIndex = Math.floor(Math.random() * length);
}
return newIndex;
}, []);
const playNext = useCallback(() => {
setCurrentTrackIndex((prevIndex) => {
if (isShuffle) return getRandomIndex(prevIndex, playlist.length);
return (prevIndex + 1) % playlist.length;
});
setIsPlaying(true);
}, [playlist.length, isShuffle, getRandomIndex]);
const playPrev = useCallback(() => {
setCurrentTrackIndex((prevIndex) => {
if (isShuffle) return getRandomIndex(prevIndex, playlist.length);
return (prevIndex - 1 + playlist.length) % playlist.length;
});
setIsPlaying(true);
}, [playlist.length, isShuffle, getRandomIndex]);
const handleTrackEnded = useCallback(() => {
if (repeatMode === 'one') {
audioRef.current.currentTime = 0;
audioRef.current.play();
} else if (repeatMode === 'all') {
playNext();
} else {
if (currentTrackIndex === playlist.length - 1 && !isShuffle) {
setIsPlaying(false);
} else {
playNext();
}
}
}, [repeatMode, currentTrackIndex, playlist.length, isShuffle, playNext]);
useEffect(() => {
const audio = audioRef.current;
const handleTimeUpdate = () => {
setCurrentTime(audio.currentTime);
};
const handleLoadedMetadata = () => {
setDuration(audio.duration);
};
audio.addEventListener('ended', handleTrackEnded);
audio.addEventListener('timeupdate', handleTimeUpdate);
audio.addEventListener('loadedmetadata', handleLoadedMetadata);
return () => {
audio.removeEventListener('ended', handleTrackEnded);
audio.removeEventListener('timeupdate', handleTimeUpdate);
audio.removeEventListener('loadedmetadata', handleLoadedMetadata);
};
}, [handleTrackEnded]);
useEffect(() => {
if (playlist.length > 0 && playlist[currentTrackIndex]) {
const audio = audioRef.current;
const currentTrack = playlist[currentTrackIndex];
const publicUrl = process.env.PUBLIC_URL || '';
const trackUrl = currentTrack.url.startsWith('http')
? currentTrack.url
: `${publicUrl}${currentTrack.url}`; // Use PUBLIC_URL for local assets
if (
audio.src !== trackUrl &&
audio.src !== window.location.origin + trackUrl
) {
audio.src = trackUrl;
if (isPlaying) {
audio.play().catch((e) => console.error('Play error:', e));
}
}
}
}, [currentTrackIndex, playlist, isPlaying]);
// Handle Play/Pause side effects
useEffect(() => {
const audio = audioRef.current;
if (isPlaying) {
audio.play().catch((e) => {
console.error('Play failed', e);
setIsPlaying(false);
});
} else {
audio.pause();
}
}, [isPlaying]);
// Handle Volume
useEffect(() => {
const audio = audioRef.current;
if (audio) {
audio.volume = isMuted ? 0 : volume;
}
}, [volume, isMuted]);
const playTrack = (index) => {
setCurrentTrackIndex(index);
setIsPlaying(true);
setIsPlayerOpen(true);
};
const togglePlay = () => {
if (playlist.length === 0) return;
if (!isPlayerOpen) setIsPlayerOpen(true);
setIsPlaying(!isPlaying);
};
const toggleRepeat = () => {
setRepeatMode((prev) => {
if (prev === 'off') return 'all';
if (prev === 'all') return 'one';
return 'off';
});
};
const toggleShuffle = () => {
setIsShuffle((prev) => !prev);
};
const closePlayer = () => {
setIsPlaying(false);
setIsPlayerOpen(false);
};
const seek = (time) => {
const audio = audioRef.current;
audio.currentTime = time;
setCurrentTime(time);
};
const setVolume = (val) => {
const newVol = Math.max(0, Math.min(1, val));
setVolumeState(newVol);
if (newVol > 0 && isMuted) {
setIsMuted(false);
}
};
const toggleMute = () => {
if (isMuted) {
setIsMuted(false);
setVolumeState(previousVolume || 1); // Restore previous volume
} else {
setPreviousVolume(volume);
setIsMuted(true);
setVolumeState(0);
}
};
const value = {
isPlaying,
currentTrack: playlist[currentTrackIndex],
playlist,
isPlayerOpen,
repeatMode,
isShuffle,
volume,
isMuted,
togglePlay,
playTrack,
nextTrack: playNext,
prevTrack: playPrev,
toggleRepeat,
toggleShuffle,
closePlayer,
currentTime,
duration,
seek,
setPlaylist,
setVolume,
toggleMute,
};
return (
<CloudMusicContext.Provider value={value}>
{children}
</CloudMusicContext.Provider>
);
};