2021-04-01 20:36:11 -05:00
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import * as mfm from 'mfm-js';
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import { unique } from '@/prelude/array';
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// unique without hash
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// [ http://a/#1, http://a/#2, http://b/#3 ] => [ http://a/#1, http://b/#3 ]
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const removeHash = (x: string) => x.replace(/#[^#]*$/, '');
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export function extractUrlFromMfm(nodes: mfm.MfmNode[], respectSilentFlag = true): string[] {
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2021-04-10 03:50:18 -05:00
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let urls = [] as string[];
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2021-04-01 20:36:11 -05:00
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2021-04-10 03:50:18 -05:00
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mfm.inspect(nodes, (node) => {
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if (node.type === 'url') {
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urls.push(node.props.url);
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} else if (node.type === 'link' && (!respectSilentFlag || !node.props.silent)) {
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urls.push(node.props.url);
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2021-04-01 20:36:11 -05:00
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}
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2021-04-10 03:50:18 -05:00
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});
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2021-04-01 20:36:11 -05:00
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2021-04-10 03:50:18 -05:00
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urls = unique(urls);
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2021-04-01 20:36:11 -05:00
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return urls.reduce((array, url) => {
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2021-04-10 03:50:18 -05:00
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const urlWithoutHash = removeHash(url);
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if (!array.map(x => removeHash(x)).includes(urlWithoutHash)) array.push(url);
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2021-04-01 20:36:11 -05:00
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return array;
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}, [] as string[]);
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}
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