lbry-desktop/ui/component/markdownLink/view.jsx

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// @flow
import { KNOWN_APP_DOMAINS } from 'config';
import * as ICONS from 'constants/icons';
import * as React from 'react';
import { isURIValid } from 'lbry-redux';
import Button from 'component/button';
import ClaimLink from 'component/claimLink';
type Props = {
href: string,
title?: string,
embed?: boolean,
children: React.Node,
parentCommentId?: string,
isMarkdownPost?: boolean,
simpleLinks?: boolean,
};
function MarkdownLink(props: Props) {
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const { children, href, title, embed = false, parentCommentId, isMarkdownPost, simpleLinks = false } = props;
const decodedUri = decodeURI(href);
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if (!href) {
return children || null;
}
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let element = <span>{children}</span>;
// Regex for url protocol
const protocolRegex = new RegExp('^(https?|lbry|mailto)+:', 'i');
const protocol = href ? protocolRegex.exec(href) : null;
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let linkUrlObject;
try {
linkUrlObject = new URL(decodedUri);
} catch (e) {}
let lbryUrlFromLink;
if (linkUrlObject) {
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const linkDomain = linkUrlObject.host;
const isKnownAppDomainLink = KNOWN_APP_DOMAINS.includes(linkDomain);
if (isKnownAppDomainLink) {
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let linkPathname;
try {
// This could be anything
linkPathname = decodeURIComponent(
linkUrlObject.pathname.startsWith('//') ? linkUrlObject.pathname.slice(2) : linkUrlObject.pathname.slice(1)
);
} catch (e) {}
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const linkPathPlusHash = linkPathname ? `${linkPathname}${linkUrlObject.hash}` : undefined;
const possibleLbryUrl = linkPathPlusHash ? `lbry://${linkPathPlusHash.replace(/:/g, '#')}` : undefined;
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const lbryLinkIsValid = possibleLbryUrl && isURIValid(possibleLbryUrl);
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if (lbryLinkIsValid) {
lbryUrlFromLink = possibleLbryUrl;
}
}
}
// Return plain text if no valid url
// Return external link if protocol is http or https
// Return local link if protocol is lbry uri
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if (!simpleLinks && ((protocol && protocol[0] === 'lbry:' && isURIValid(decodedUri)) || lbryUrlFromLink)) {
element = (
<ClaimLink
uri={lbryUrlFromLink || decodedUri}
autoEmbed={embed}
parentCommentId={parentCommentId}
isMarkdownPost={isMarkdownPost}
>
{children}
</ClaimLink>
);
} else if (
simpleLinks ||
(protocol && (protocol[0] === 'http:' || protocol[0] === 'https:' || protocol[0] === 'mailto:'))
) {
const isLbryLink = href.startsWith('lbry://');
element = (
<Button
button="link"
iconRight={isLbryLink ? undefined : ICONS.EXTERNAL}
title={title || decodedUri}
label={children}
className="button--external-link"
navigate={isLbryLink ? href : undefined}
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href={isLbryLink ? undefined : href}
/>
);
}
return <>{element}</>;
}
export default MarkdownLink;