lbry-desktop/ui/component/markdownLink/view.jsx
2020-11-19 15:28:19 -05:00

101 lines
2.8 KiB
JavaScript

// @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) {
const { children, href, title, embed = false, parentCommentId, isMarkdownPost, simpleLinks = false } = props;
let decodedUri;
try {
decodedUri = decodeURI(href);
} catch (e) {}
if (!href || !decodedUri) {
return children || null;
}
let element = <span>{children}</span>;
// Regex for url protocol
const protocolRegex = new RegExp('^(https?|lbry|mailto)+:', 'i');
const protocol = href ? protocolRegex.exec(href) : null;
let linkUrlObject;
try {
linkUrlObject = new URL(decodedUri);
} catch (e) {}
let lbryUrlFromLink;
if (linkUrlObject) {
const linkDomain = linkUrlObject.host;
const isKnownAppDomainLink = KNOWN_APP_DOMAINS.includes(linkDomain);
if (isKnownAppDomainLink) {
let linkPathname;
try {
// This could be anything
linkPathname = decodeURIComponent(
linkUrlObject.pathname.startsWith('//') ? linkUrlObject.pathname.slice(2) : linkUrlObject.pathname.slice(1)
);
} catch (e) {}
const linkPathPlusHash = linkPathname ? `${linkPathname}${linkUrlObject.hash}` : undefined;
const possibleLbryUrl = linkPathPlusHash ? `lbry://${linkPathPlusHash.replace(/:/g, '#')}` : undefined;
const lbryLinkIsValid = possibleLbryUrl && isURIValid(possibleLbryUrl);
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
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}
href={isLbryLink ? undefined : href}
/>
);
}
return <>{element}</>;
}
export default MarkdownLink;