Files
5chan/src/components/comment-media/comment-media.tsx
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TypeScript

import React, { memo, useState } from 'react';
import { useTranslation } from 'react-i18next';
import { CommentMediaInfo, getDisplayMediaInfoType, getHasThumbnail, getMediaDimensions } from '../../lib/utils/media-utils';
import { getHostname, parseHttpUrl } from '../../lib/utils/url-utils';
import useExpandedMediaStore from '../../stores/use-expanded-media-store';
import useFetchGifFirstFrame from '../../hooks/use-fetch-gif-first-frame';
import useIsMobile from '../../hooks/use-is-mobile';
import styles from './comment-media.module.css';
import Embed, { canEmbed } from '../embed';
import RufflePlayer from './ruffle-player';
interface MediaProps {
commentMediaInfo?: CommentMediaInfo;
deleted?: boolean;
disableToggle?: boolean;
displayHeight?: string;
displayWidth?: string;
isFloatingEmbed?: boolean;
isOutOfFeed?: boolean;
isReply?: boolean;
linkHeight?: number;
linkWidth?: number;
parentCid?: string;
purged?: boolean;
removed?: boolean;
spoiler?: boolean;
showThumbnail?: boolean;
setShowThumbnail: (showThumbnail: boolean) => void;
onMediaLoadFailureChange?: (url: string | undefined) => void;
}
type GifFrameState = ReturnType<typeof useFetchGifFirstFrame>;
const getMediaLoadFailureLabels = (url: string | undefined, t: ReturnType<typeof useTranslation>['t']) => {
const hostname = url ? getHostname(url) : undefined;
const label = t('media_failed_to_load');
const source = hostname ? t('media_failed_to_load_source', { host: hostname }) : t('media_failed_to_load_source_unknown');
const hint = t('media_failed_to_load_hint');
const openSourceLabel = t('media_failed_to_load_open_source');
const inline = hostname ? t('media_failed_to_load_inline', { host: hostname }) : t('media_failed_to_load_inline_unknown');
const statusLabel = url ? `${label}. ${source}. ${hint}. ${openSourceLabel}.` : `${label}. ${source}. ${hint}.`;
return { inline, openSourceLabel, statusLabel };
};
const MediaLoadFailure = ({ compact = false, url }: { compact?: boolean; url?: string }) => {
const { t } = useTranslation();
const { inline, openSourceLabel, statusLabel } = getMediaLoadFailureLabels(url, t);
if (compact) {
return (
<>
<img className={styles.fileDeleted} src='assets/filedeleted-res.gif' alt='' aria-hidden='true' />
<output className={styles.mediaLoadFailureStatus} aria-label={statusLabel} title={statusLabel} />
</>
);
}
return (
<output className={styles.mediaLoadFailure} aria-label={statusLabel} title={statusLabel}>
<img className={styles.fileDeleted} src='assets/filedeleted-res.gif' alt='' aria-hidden='true' />
<span className={styles.mediaLoadFailureSource}>{inline}</span>
{url && (
<a className={styles.mediaLoadFailureLink} href={url} target='_blank' rel='noopener noreferrer'>
{openSourceLabel}
</a>
)}
</output>
);
};
export const MediaLoadFailureInfo = ({ url }: { url?: string }) => {
const { t } = useTranslation();
const { inline, openSourceLabel, statusLabel } = getMediaLoadFailureLabels(url, t);
return (
<div className={styles.mediaLoadFailureInfo} title={statusLabel}>
{inline}
{url && (
<>
{' '}
<a href={url} target='_blank' rel='noopener noreferrer'>
{openSourceLabel}
</a>
</>
)}
</div>
);
};
const Thumbnail = ({
commentMediaInfo,
deleted,
displayHeight,
gifFrameState,
displayWidth,
isFloatingEmbed,
isOutOfFeed,
isReply,
purged,
removed,
spoiler,
setShowThumbnail,
}: MediaProps & { gifFrameState: GifFrameState }) => {
const isMobile = useIsMobile();
const { patternThumbnailUrl, thumbnail, type, url } = commentMediaInfo || {};
let thumbnailComponent: React.ReactNode = null;
const thumbnailDimensions = { '--width': displayWidth, '--height': displayHeight } as React.CSSProperties;
const iframeThumbnail = patternThumbnailUrl || thumbnail;
const { frameUrl: gifFrameUrl, status: gifFrameStatus } = gifFrameState;
const hasThumbnail = getHasThumbnail(commentMediaInfo, url);
const handleOpenMedia = () => setShowThumbnail(false);
if (type === 'gif') {
thumbnailComponent =
gifFrameStatus === 'loading' ? (
<button type='button' className={`${styles.gifPlaceholder} ${styles.mediaToggleButton}`} aria-label='Loading GIF thumbnail' onClick={handleOpenMedia} />
) : (
<button type='button' className={styles.mediaToggleButton} aria-label='Open GIF' onClick={handleOpenMedia}>
<img src={gifFrameUrl || url} alt='' />
</button>
);
} else if (type === 'video') {
thumbnailComponent = thumbnail ? (
<img src={thumbnail} alt='Video thumbnail' />
) : (
// show first frame of the video, as a workaround for Safari not loading thumbnails
<button type='button' className={styles.mediaToggleButton} aria-label='Open video' onClick={handleOpenMedia}>
<video src={`${url}#t=0.001`} aria-label='Video thumbnail' />
</button>
);
} else if (type === 'webpage') {
thumbnailComponent = (
<button type='button' className={styles.mediaToggleButton} aria-label='Open webpage preview' onClick={handleOpenMedia}>
<img src={thumbnail} alt='' />
</button>
);
} else if (type === 'iframe') {
thumbnailComponent = iframeThumbnail ? (
<button type='button' className={styles.mediaToggleButton} aria-label='Open embedded media preview' onClick={handleOpenMedia}>
<img src={iframeThumbnail} alt='' />
</button>
) : null;
} else if (type === 'audio') {
thumbnailComponent = <audio src={url} aria-label='Audio preview' controls />;
} else if (type === 'swf') {
thumbnailComponent = (
<button type='button' className={styles.swfPlaceholder} onClick={() => setShowThumbnail(false)}>
[SWF]
</button>
);
}
const thumbnailSmallPadding = isMobile ? styles.thumbnailMobile : styles.thumbnailReplyDesktop;
const linkWithoutThumbnail = url ? parseHttpUrl(url) : null;
const fallbackLinkLabel = url ? getHostname(url) || (url.length > 30 ? `${url.slice(0, 30)}...` : url) : '';
const noThumbnailLink =
!hasThumbnail && linkWithoutThumbnail ? (
canEmbed(linkWithoutThumbnail) ? (
<button
type='button'
className={styles.noThumbnailButton}
tabIndex={0}
onKeyDown={(e) => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault();
setShowThumbnail(false);
}
}}
onClick={() => setShowThumbnail(false)}
>
{fallbackLinkLabel}
</button>
) : (
<a href={url} target='_blank' rel='noopener noreferrer'>
{fallbackLinkLabel}
</a>
)
) : null;
return deleted || removed || purged ? (
<img className={styles.fileDeleted} src='assets/filedeleted-res.gif' alt='File deleted' />
) : spoiler ? (
<button type='button' className={styles.mediaToggleButton} aria-label='Open spoiler media' onClick={handleOpenMedia}>
<img className={styles.spoiler} src='assets/spoiler.png' alt='' />
</button>
) : isOutOfFeed ? (
<span className={`${isFloatingEmbed ? styles.floatingEmbed : styles.communityAvatar}`}>{thumbnailComponent}</span>
) : isMobile || isReply ? (
<span className={`${styles.thumbnailSmall} ${thumbnailSmallPadding}`} style={thumbnailDimensions}>
{thumbnailComponent}
{noThumbnailLink}
</span>
) : (
<span className={styles.thumbnailBig} style={thumbnailDimensions}>
{thumbnailComponent}
{noThumbnailLink}
</span>
);
};
const Media = ({ commentMediaInfo, disableToggle, isReply, setShowThumbnail }: MediaProps) => {
const { t } = useTranslation();
const { thumbnail, type, url } = commentMediaInfo || {};
const isMobile = useIsMobile();
const fitExpandedImagesToScreen = useExpandedMediaStore((s) => s.fitExpandedImagesToScreen);
const unmuteExpandedVideoSound = useExpandedMediaStore((s) => s.unmuteExpandedVideoSound);
const mediaClass = `${isMobile ? styles.mediaMobile : isReply ? styles.mediaDesktopReply : styles.mediaDesktopOp} ${
fitExpandedImagesToScreen ? styles.fitToScreen : ''
}`;
const mediaDimensions = getMediaDimensions(commentMediaInfo);
return (
<span className={mediaClass} data-expanded-media='true'>
{type === 'iframe' && url ? (
<Embed url={url} />
) : type === 'gif' ? (
disableToggle ? (
<img src={url} alt='' />
) : (
<button type='button' className={styles.mediaToggleButton} aria-label='Collapse GIF' onClick={() => setShowThumbnail(true)}>
<img src={url} alt='' />
</button>
)
) : type === 'video' ? (
<video src={url} aria-label={t('video')} controls autoPlay loop muted={!unmuteExpandedVideoSound} />
) : type === 'swf' && url ? (
<RufflePlayer url={url} />
) : type === 'webpage' ? (
disableToggle ? (
<img src={thumbnail} alt='' />
) : (
<button type='button' className={styles.mediaToggleButton} aria-label='Collapse webpage preview' onClick={() => setShowThumbnail(true)}>
<img src={thumbnail} alt='' />
</button>
)
) : null}
{isMobile && type && (
<div className={styles.fileInfo}>
<a href={url} target='_blank' rel='noopener noreferrer'>
{url && url.length > 30 ? url.slice(0, 30) + '...' : url}
</a>{' '}
({getDisplayMediaInfoType(type, t)}
{mediaDimensions && `, ${mediaDimensions}`})
</div>
)}
{isMobile && (type === 'iframe' || type === 'video' || type === 'audio' || type === 'swf') && (
<div className={styles.closeButton}>
<button
type='button'
className='button'
tabIndex={0}
onKeyDown={(e) => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault();
setShowThumbnail(true);
}
}}
onClick={() => setShowThumbnail(true)}
>
{t('close')}
</button>
</div>
)}
</span>
);
};
interface ImageProps {
commentMediaInfo: CommentMediaInfo;
disableToggle?: boolean;
displayHeight: string;
displayWidth: string;
initialExpanded?: boolean;
isOutOfFeed: boolean;
onMediaLoadFailureChange?: (url: string | undefined) => void;
parentCid?: string;
spoiler?: boolean;
}
const Image = ({
commentMediaInfo,
disableToggle = false,
displayHeight,
displayWidth,
initialExpanded = false,
isOutOfFeed,
onMediaLoadFailureChange,
parentCid,
spoiler,
}: ImageProps) => {
const { t } = useTranslation();
const { type, url } = commentMediaInfo || {};
const isReply = parentCid;
const isMobile = useIsMobile();
const [isImageExpanded, setIsImageExpanded] = useState(initialExpanded);
const fitExpandedImagesToScreen = useExpandedMediaStore((s) => s.fitExpandedImagesToScreen);
const mediaDimensions = getMediaDimensions(commentMediaInfo);
const mediaClass = `${isMobile ? styles.mediaMobile : isReply ? styles.mediaDesktopReply : styles.mediaDesktopOp} ${
fitExpandedImagesToScreen ? styles.fitToScreen : ''
}`;
const thumbnailSmallPadding = isMobile ? styles.thumbnailMobile : styles.thumbnailReplyDesktop;
const thumbnailDimensions = { '--width': displayWidth, '--height': displayHeight } as React.CSSProperties;
const expandedMediaAttribute = isImageExpanded ? 'true' : undefined;
const imageMediaStyle = isImageExpanded ? undefined : thumbnailDimensions;
const [failedUrl, setFailedUrl] = useState<string | undefined>();
const hasError = failedUrl === url;
const handleError = () => {
setFailedUrl(url);
onMediaLoadFailureChange?.(url);
};
const handleLoad = () => {
setFailedUrl((currentFailedUrl) => (currentFailedUrl === url ? undefined : currentFailedUrl));
onMediaLoadFailureChange?.(undefined);
};
if (spoiler && !isImageExpanded) {
const spoilerDimensions = { '--width': '150px', '--height': '150px' } as React.CSSProperties;
return (
<span
className={`${isOutOfFeed ? styles.communityAvatar : styles.thumbnailBig} ${styles.thumbnail} ${isImageExpanded && isMobile ? styles.removeFloat : ''}`}
style={spoilerDimensions}
>
<button type='button' className={styles.mediaToggleButton} aria-label='Open spoiler media' onClick={() => setIsImageExpanded(true)}>
<img className={styles.spoiler} src='assets/spoiler.png' alt='' />
</button>
</span>
);
}
return isMobile ? (
<span className={`${styles.thumbnail} ${isImageExpanded && isMobile ? styles.removeFloat : ''}`}>
<span
className={isImageExpanded ? mediaClass : `${isOutOfFeed ? styles.communityAvatar : styles.thumbnailSmall} ${thumbnailSmallPadding}`}
data-expanded-media={expandedMediaAttribute}
style={imageMediaStyle}
>
{hasError ? (
<MediaLoadFailure compact url={url} />
) : disableToggle ? (
<img src={url} onError={handleError} onLoad={handleLoad} alt='' />
) : (
<button
type='button'
className={styles.mediaToggleButton}
aria-label={isImageExpanded ? 'Collapse image' : 'Expand image'}
onClick={() => setIsImageExpanded(!isImageExpanded)}
>
<img src={url} onError={handleError} onLoad={handleLoad} alt='' />
</button>
)}
</span>
{isImageExpanded && type && (
<div className={styles.fileInfo}>
<a href={url} target='_blank' rel='noopener noreferrer'>
{url && url.length > 30 ? url.slice(0, 30) + '...' : url}
</a>{' '}
({getDisplayMediaInfoType(type, t)}
{mediaDimensions && `, ${mediaDimensions}`})
</div>
)}
{type && !isImageExpanded && <div className={styles.fileInfo}>{`${spoiler ? `${t('spoiler')} - ` : ''} ${getDisplayMediaInfoType(type, t)}`}</div>}
</span>
) : (
<span
className={isImageExpanded ? mediaClass : `${isOutOfFeed ? styles.communityAvatar : styles.thumbnailBig} ${styles.thumbnail}`}
data-expanded-media={expandedMediaAttribute}
style={imageMediaStyle}
>
{hasError ? (
<MediaLoadFailure url={url} />
) : disableToggle ? (
<img src={url} onError={handleError} onLoad={handleLoad} alt='' />
) : (
<button
type='button'
className={styles.mediaToggleButton}
aria-label={isImageExpanded ? 'Collapse image' : 'Expand image'}
onClick={() => setIsImageExpanded(!isImageExpanded)}
>
<img src={url} onError={handleError} onLoad={handleLoad} alt='' />
</button>
)}
</span>
);
};
const CommentMedia = ({
commentMediaInfo,
deleted,
disableToggle,
isFloatingEmbed,
linkHeight,
linkWidth,
parentCid,
purged,
removed,
showThumbnail,
setShowThumbnail,
spoiler,
onMediaLoadFailureChange,
}: MediaProps) => {
const isReply = parentCid;
const { t } = useTranslation();
const isMobile = useIsMobile();
const { thumbnailHeight, thumbnailWidth, url } = commentMediaInfo || {};
const gifFrameState = useFetchGifFirstFrame(commentMediaInfo?.type === 'gif' ? url : undefined);
let type = commentMediaInfo?.type;
const { status: gifFrameStatus } = gifFrameState;
if (type === 'gif' && gifFrameStatus === 'ready') {
type = 'animated gif';
} else if (type === 'gif' && gifFrameStatus === 'failed') {
type = 'static gif';
}
let displayWidth, displayHeight;
const maxThumbnailSize = isMobile || isReply ? 125 : 250;
if (linkWidth && linkHeight) {
// use the dimensions from the pkc-js API
let scale = Math.min(1, maxThumbnailSize / Math.max(linkWidth, linkHeight));
displayWidth = `${linkWidth * scale}px`;
displayHeight = `${linkHeight * scale}px`;
} else if (thumbnailHeight && thumbnailWidth) {
// use the dimensions from the thumbnail fetched by useCommentMediaInfo
let scale = Math.min(1, maxThumbnailSize / Math.max(thumbnailWidth, thumbnailHeight));
displayWidth = `${thumbnailWidth * scale}px`;
displayHeight = `${thumbnailHeight * scale}px`;
} else {
// use the default size
displayWidth = `${maxThumbnailSize}px`;
displayHeight = `${maxThumbnailSize}px`;
}
if (type === 'audio') {
displayWidth = '100%';
displayHeight = '100%';
}
const isOutOfFeed = isFloatingEmbed || spoiler || false; // virtuoso wrapper unneeded
return (
<span className={styles.content}>
{commentMediaInfo?.type === 'image' ? (
// images just enlarge when clicked, so they don't need two separate components
// when showThumbnail is explicitly false (e.g., from embed button), start expanded
<Image
commentMediaInfo={commentMediaInfo}
disableToggle={disableToggle}
displayHeight={displayHeight}
displayWidth={displayWidth}
initialExpanded={showThumbnail === false}
isOutOfFeed={isOutOfFeed}
onMediaLoadFailureChange={onMediaLoadFailureChange}
parentCid={parentCid}
spoiler={spoiler}
/>
) : (
<>
<span className={`${showThumbnail ? styles.show : styles.hide} ${styles.thumbnail}`}>
{url && (
<Thumbnail
commentMediaInfo={commentMediaInfo}
displayHeight={displayHeight}
gifFrameState={gifFrameState}
displayWidth={displayWidth}
isFloatingEmbed={isFloatingEmbed}
isOutOfFeed={isOutOfFeed}
deleted={deleted}
purged={purged}
removed={removed}
spoiler={spoiler}
setShowThumbnail={setShowThumbnail}
/>
)}
{isMobile && type && <div className={styles.fileInfo}>{`${spoiler ? `${t('spoiler')} - ` : ''} ${getDisplayMediaInfoType(type, t)}`}</div>}
</span>
{!showThumbnail && <Media commentMediaInfo={commentMediaInfo} disableToggle={disableToggle} isReply={!!parentCid} setShowThumbnail={setShowThumbnail} />}
</>
)}
</span>
);
};
export default memo(CommentMedia, (prev, next) => {
return (
prev.commentMediaInfo === next.commentMediaInfo &&
prev.deleted === next.deleted &&
prev.disableToggle === next.disableToggle &&
prev.isFloatingEmbed === next.isFloatingEmbed &&
prev.isOutOfFeed === next.isOutOfFeed &&
prev.isReply === next.isReply &&
prev.linkHeight === next.linkHeight &&
prev.linkWidth === next.linkWidth &&
prev.onMediaLoadFailureChange === next.onMediaLoadFailureChange &&
prev.parentCid === next.parentCid &&
prev.purged === next.purged &&
prev.removed === next.removed &&
prev.showThumbnail === next.showThumbnail &&
prev.setShowThumbnail === next.setShowThumbnail &&
prev.spoiler === next.spoiler
);
});