lbry-desktop/ui/component/viewers/videoViewer/view.jsx
2021-03-11 16:27:03 -05:00

319 lines
10 KiB
JavaScript

// @flow
import { ENABLE_PREROLL_ADS } from 'config';
import * as PAGES from 'constants/pages';
import * as ICONS from 'constants/icons';
import React, { useEffect, useState, useContext, useCallback } from 'react';
import { stopContextMenu } from 'util/context-menu';
import type { Player } from './internal/videojs';
import VideoJs from './internal/videojs';
import analytics from 'analytics';
import { EmbedContext } from 'page/embedWrapper/view';
import classnames from 'classnames';
import { FORCE_CONTENT_TYPE_PLAYER } from 'constants/claim';
import AutoplayCountdown from 'component/autoplayCountdown';
import usePrevious from 'effects/use-previous';
import FileViewerEmbeddedEnded from 'web/component/fileViewerEmbeddedEnded';
import FileViewerEmbeddedTitle from 'component/fileViewerEmbeddedTitle';
import LoadingScreen from 'component/common/loading-screen';
import { addTheaterModeButton } from './internal/theater-mode';
import { useGetAds } from 'effects/use-get-ads';
import Button from 'component/button';
import I18nMessage from 'component/i18nMessage';
import { useHistory } from 'react-router';
const PLAY_TIMEOUT_ERROR = 'play_timeout_error';
const PLAY_TIMEOUT_LIMIT = 2000;
type Props = {
position: number,
changeVolume: (number) => void,
changeMute: (boolean) => void,
source: string,
contentType: string,
thumbnail: string,
claim: StreamClaim,
muted: boolean,
videoPlaybackRate: number,
volume: number,
uri: string,
autoplaySetting: boolean,
autoplayIfEmbedded: boolean,
desktopPlayStartTime?: number,
doAnalyticsView: (string, number) => Promise<any>,
doAnalyticsBuffer: (string, any) => void,
claimRewards: () => void,
savePosition: (string, number) => void,
clearPosition: (string) => void,
toggleVideoTheaterMode: () => void,
setVideoPlaybackRate: (number) => void,
authenticated: boolean,
homepageData: {
PRIMARY_CONTENT_CHANNEL_IDS?: Array<string>,
ENLIGHTENMENT_CHANNEL_IDS?: Array<string>,
GAMING_CHANNEL_IDS?: Array<string>,
SCIENCE_CHANNEL_IDS?: Array<string>,
TECHNOLOGY_CHANNEL_IDS?: Array<string>,
COMMUNITY_CHANNEL_IDS?: Array<string>,
FINCANCE_CHANNEL_IDS?: Array<string>,
},
};
/*
codesandbox of idealized/clean videojs and react 16+
https://codesandbox.io/s/71z2lm4ko6
*/
function VideoViewer(props: Props) {
const {
contentType,
source,
changeVolume,
changeMute,
videoPlaybackRate,
thumbnail,
position,
claim,
uri,
muted,
volume,
autoplaySetting,
autoplayIfEmbedded,
doAnalyticsView,
doAnalyticsBuffer,
claimRewards,
savePosition,
clearPosition,
desktopPlayStartTime,
toggleVideoTheaterMode,
setVideoPlaybackRate,
homepageData,
authenticated,
} = props;
const {
PRIMARY_CONTENT_CHANNEL_IDS = [],
ENLIGHTENMENT_CHANNEL_IDS = [],
GAMING_CHANNEL_IDS = [],
SCIENCE_CHANNEL_IDS = [],
TECHNOLOGY_CHANNEL_IDS = [],
COMMUNITY_CHANNEL_IDS = [],
FINCANCE_CHANNEL_IDS = [],
} = homepageData;
const adApprovedChannelIds = [
...PRIMARY_CONTENT_CHANNEL_IDS,
...ENLIGHTENMENT_CHANNEL_IDS,
...GAMING_CHANNEL_IDS,
...SCIENCE_CHANNEL_IDS,
...TECHNOLOGY_CHANNEL_IDS,
...COMMUNITY_CHANNEL_IDS,
...FINCANCE_CHANNEL_IDS,
];
const claimId = claim && claim.claim_id;
const channelClaimId = claim && claim.signing_channel && claim.signing_channel.claim_id;
const isAudio = contentType.includes('audio');
const forcePlayer = FORCE_CONTENT_TYPE_PLAYER.includes(contentType);
const {
location: { pathname },
} = useHistory();
const [isPlaying, setIsPlaying] = useState(false);
const [showAutoplayCountdown, setShowAutoplayCountdown] = useState(false);
const [isEndededEmbed, setIsEndededEmbed] = useState(false);
const previousUri = usePrevious(uri);
const embedded = useContext(EmbedContext);
const approvedVideo = Boolean(channelClaimId) && adApprovedChannelIds.includes(channelClaimId);
const adsEnabled = ENABLE_PREROLL_ADS && !authenticated && !embedded && approvedVideo;
const [adUrl, setAdUrl, isFetchingAd] = useGetAds(adsEnabled);
/* isLoading was designed to show loading screen on first play press, rather than completely black screen, but
breaks because some browsers (e.g. Firefox) block autoplay but leave the player.play Promise pending */
const [isLoading, setIsLoading] = useState(false);
// force everything to recent when URI changes, can cause weird corner cases otherwise (e.g. navigate while autoplay is true)
useEffect(() => {
if (uri && previousUri && uri !== previousUri) {
setShowAutoplayCountdown(false);
setIsEndededEmbed(false);
setIsLoading(false);
}
}, [uri, previousUri]);
function doTrackingBuffered(e: Event, data: any) {
fetch(source, { method: 'HEAD' }).then((response) => {
data.playerPoweredBy = response.headers.get('x-powered-by');
doAnalyticsBuffer(uri, data);
});
}
function doTrackingFirstPlay(e: Event, data: any) {
let timeToStartInMs = data.secondsToLoad * 1000;
if (desktopPlayStartTime !== undefined) {
const differenceToAdd = Date.now() - desktopPlayStartTime;
timeToStartInMs += differenceToAdd;
}
analytics.playerStartedEvent(embedded);
analytics.videoStartEvent(claimId, timeToStartInMs);
doAnalyticsView(uri, timeToStartInMs).then(() => {
claimRewards();
});
}
const onEnded = React.useCallback(() => {
if (adUrl) {
setAdUrl(null);
return;
}
if (embedded) {
setIsEndededEmbed(true);
} else if (autoplaySetting) {
setShowAutoplayCountdown(true);
}
}, [embedded, setIsEndededEmbed, autoplaySetting, setShowAutoplayCountdown, adUrl, setAdUrl]);
function onPlay() {
setIsLoading(false);
setIsPlaying(true);
setShowAutoplayCountdown(false);
setIsEndededEmbed(false);
}
function handlePosition(player) {
if (player.ended()) {
clearPosition(uri);
} else {
savePosition(uri, player.currentTime());
}
}
const playerReadyDependencyList = [uri, adUrl, embedded, autoplayIfEmbedded];
if (!IS_WEB) {
playerReadyDependencyList.push(desktopPlayStartTime);
}
const onPlayerReady = useCallback((player: Player) => {
if (!embedded) {
player.muted(muted);
player.volume(volume);
player.playbackRate(videoPlaybackRate);
addTheaterModeButton(player, toggleVideoTheaterMode);
}
const shouldPlay = !embedded || autoplayIfEmbedded;
// https://blog.videojs.com/autoplay-best-practices-with-video-js/#Programmatic-Autoplay-and-Success-Failure-Detection
if (shouldPlay) {
const playPromise = player.play();
const timeoutPromise = new Promise((resolve, reject) =>
setTimeout(() => reject(PLAY_TIMEOUT_ERROR), PLAY_TIMEOUT_LIMIT)
);
Promise.race([playPromise, timeoutPromise]).catch((error) => {
if (PLAY_TIMEOUT_ERROR) {
const retryPlayPromise = player.play();
Promise.race([retryPlayPromise, timeoutPromise]).catch((error) => {
setIsLoading(false);
setIsPlaying(false);
});
} else {
setIsLoading(false);
setIsPlaying(false);
}
});
}
setIsLoading(shouldPlay); // if we are here outside of an embed, we're playing
player.on('tracking:buffered', doTrackingBuffered);
player.on('tracking:firstplay', doTrackingFirstPlay);
player.on('ended', onEnded);
player.on('play', onPlay);
player.on('pause', () => {
setIsPlaying(false);
handlePosition(player);
});
player.on('error', () => {
const error = player.error();
if (error) {
analytics.sentryError('Video.js error', error);
}
});
player.on('volumechange', () => {
if (player) {
changeVolume(player.volume());
changeMute(player.muted());
}
});
player.on('ratechange', () => {
if (player) {
setVideoPlaybackRate(player.playbackRate());
}
});
if (position) {
player.currentTime(position);
}
player.on('dispose', () => {
handlePosition(player);
});
}, playerReadyDependencyList);
return (
<div
className={classnames('file-viewer', {
'file-viewer--is-playing': isPlaying,
'file-viewer--ended-embed': isEndededEmbed,
})}
onContextMenu={stopContextMenu}
>
{showAutoplayCountdown && <AutoplayCountdown uri={uri} />}
{isEndededEmbed && <FileViewerEmbeddedEnded uri={uri} />}
{embedded && !isEndededEmbed && <FileViewerEmbeddedTitle uri={uri} />}
{/* disable this loading behavior because it breaks when player.play() promise hangs */}
{isLoading && <LoadingScreen status={__('Loading')} />}
{!isFetchingAd && adUrl && (
<>
<span className="ads__video-notify">
{__('Advertisement')}{' '}
<Button
className="ads__video-close"
icon={ICONS.REMOVE}
title={__('Close')}
onClick={() => setAdUrl(null)}
/>
</span>
<span className="ads__video-nudge">
<I18nMessage
tokens={{
sign_up: (
<Button
button="secondary"
className="ads__video-link"
label={__('Sign Up')}
navigate={`/$/${PAGES.AUTH}?redirect=${pathname}&src=video-ad`}
/>
),
}}
>
%sign_up% to turn ads off.
</I18nMessage>
</span>
</>
)}
{!isFetchingAd && (
<VideoJs
adUrl={adUrl}
source={adUrl || source}
sourceType={forcePlayer || adUrl ? 'video/mp4' : contentType}
isAudio={isAudio}
poster={isAudio || (embedded && !autoplayIfEmbedded) ? thumbnail : ''}
onPlayerReady={onPlayerReady}
startMuted={autoplayIfEmbedded}
toggleVideoTheaterMode={toggleVideoTheaterMode}
autoplay={!embedded || autoplayIfEmbedded}
/>
)}
</div>
);
}
export default VideoViewer;