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PlaybackContext.tsx
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PlaybackContext.tsx
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import type {AVPlaybackStatus, AVPlaybackStatusToSet} from 'expo-av';
import React, {useCallback, useContext, useEffect, useMemo, useRef, useState} from 'react';
import type {View} from 'react-native';
import type {VideoWithOnFullScreenUpdate} from '@components/VideoPlayer/types';
import useCurrentReportID from '@hooks/useCurrentReportID';
import usePrevious from '@hooks/usePrevious';
import type ChildrenProps from '@src/types/utils/ChildrenProps';
import type {PlaybackContext, StatusCallback} from './types';
const Context = React.createContext<PlaybackContext | null>(null);
function PlaybackContextProvider({children}: ChildrenProps) {
const [currentlyPlayingURL, setCurrentlyPlayingURL] = useState<string | null>(null);
const [currentlyPlayingURLReportID, setCurrentlyPlayingURLReportID] = useState<string | undefined>();
const [sharedElement, setSharedElement] = useState<View | HTMLDivElement | null>(null);
const [originalParent, setOriginalParent] = useState<View | HTMLDivElement | null>(null);
const currentVideoPlayerRef = useRef<VideoWithOnFullScreenUpdate | null>(null);
const {currentReportID} = useCurrentReportID() ?? {};
const prevCurrentReportID = usePrevious(currentReportID);
const videoResumeTryNumberRef = useRef<number>(0);
const playVideoPromiseRef = useRef<Promise<AVPlaybackStatus>>();
const pauseVideo = useCallback(() => {
currentVideoPlayerRef.current?.setStatusAsync?.({shouldPlay: false});
}, [currentVideoPlayerRef]);
const stopVideo = useCallback(() => {
currentVideoPlayerRef.current?.setStatusAsync?.({shouldPlay: false, positionMillis: 0});
}, [currentVideoPlayerRef]);
const playVideo = useCallback(() => {
currentVideoPlayerRef.current?.getStatusAsync?.().then((status) => {
const newStatus: AVPlaybackStatusToSet = {shouldPlay: true};
if ('durationMillis' in status && status.durationMillis === status.positionMillis) {
newStatus.positionMillis = 0;
}
playVideoPromiseRef.current = currentVideoPlayerRef.current?.setStatusAsync(newStatus);
});
}, [currentVideoPlayerRef]);
const unloadVideo = useCallback(() => {
currentVideoPlayerRef.current?.unloadAsync?.();
}, [currentVideoPlayerRef]);
const updateCurrentlyPlayingURL = useCallback(
(url: string | null) => {
if (currentlyPlayingURL && url !== currentlyPlayingURL) {
pauseVideo();
}
setCurrentlyPlayingURLReportID(currentReportID);
setCurrentlyPlayingURL(url);
},
[currentlyPlayingURL, currentReportID, pauseVideo],
);
const shareVideoPlayerElements = useCallback(
(ref: VideoWithOnFullScreenUpdate | null, parent: View | HTMLDivElement | null, child: View | HTMLDivElement | null, shouldNotAutoPlay: boolean) => {
currentVideoPlayerRef.current = ref;
setOriginalParent(parent);
setSharedElement(child);
// Prevents autoplay when uploading the attachment
if (!shouldNotAutoPlay) {
playVideo();
}
},
[playVideo],
);
const checkVideoPlaying = useCallback(
(statusCallback: StatusCallback) => {
currentVideoPlayerRef.current?.getStatusAsync?.().then((status) => {
statusCallback('isPlaying' in status && status.isPlaying);
});
},
[currentVideoPlayerRef],
);
const resetVideoPlayerData = useCallback(() => {
(playVideoPromiseRef.current ?? Promise.resolve()).then(stopVideo).finally(() => {
videoResumeTryNumberRef.current = 0;
setCurrentlyPlayingURL(null);
setSharedElement(null);
setOriginalParent(null);
currentVideoPlayerRef.current = null;
unloadVideo();
});
}, [stopVideo, unloadVideo]);
useEffect(() => {
if (!currentReportID || !prevCurrentReportID || currentReportID === '-1' || prevCurrentReportID === '-1') {
return;
}
resetVideoPlayerData();
}, [currentReportID, prevCurrentReportID, resetVideoPlayerData]);
const contextValue = useMemo(
() => ({
updateCurrentlyPlayingURL,
currentlyPlayingURL,
currentlyPlayingURLReportID,
originalParent,
sharedElement,
currentVideoPlayerRef,
shareVideoPlayerElements,
setCurrentlyPlayingURL,
playVideo,
pauseVideo,
checkVideoPlaying,
videoResumeTryNumberRef,
}),
[
updateCurrentlyPlayingURL,
currentlyPlayingURL,
currentlyPlayingURLReportID,
originalParent,
sharedElement,
shareVideoPlayerElements,
playVideo,
pauseVideo,
checkVideoPlaying,
setCurrentlyPlayingURL,
],
);
return <Context.Provider value={contextValue}>{children}</Context.Provider>;
}
function usePlaybackContext() {
const playbackContext = useContext(Context);
if (!playbackContext) {
throw new Error('usePlaybackContext must be used within a PlaybackContextProvider');
}
return playbackContext;
}
PlaybackContextProvider.displayName = 'PlaybackContextProvider';
export {Context as PlaybackContext, PlaybackContextProvider, usePlaybackContext};