60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
import marked from 'marked';
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import DOMPurify from 'dompurify';
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import { escapeHtml } from './HTMLSanitizer';
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const TWITTER_USERNAME_REGEX = /(^|[^@\w])@(\w{1,15})\b/g;
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const TWITTER_USERNAME_REPLACEMENT =
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'$1<a href="http://twitter.com/$2" target="_blank" rel="noreferrer nofollow noopener">@$2</a>';
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const TWITTER_HASH_REGEX = /(^|\s)#(\w+)/g;
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const TWITTER_HASH_REPLACEMENT =
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'$1<a href="https://twitter.com/hashtag/$2" target="_blank" rel="noreferrer nofollow noopener">#$2</a>';
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class MessageFormatter {
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constructor(message, isATweet = false) {
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this.message = DOMPurify.sanitize(escapeHtml(message) || '');
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this.isATweet = isATweet;
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this.marked = marked;
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const renderer = {
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heading(text) {
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return `<strong>${text}</strong>`;
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},
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link(url, title, text) {
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return `<a rel="noreferrer noopener nofollow" href="${url}" class="link" title="${title ||
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''}" target="_blank">${text}</a>`;
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},
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};
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this.marked.use({ renderer });
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}
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formatMessage() {
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if (this.isATweet) {
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const withUserName = this.message.replace(
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TWITTER_USERNAME_REGEX,
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TWITTER_USERNAME_REPLACEMENT
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);
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const withHash = withUserName.replace(
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TWITTER_HASH_REGEX,
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TWITTER_HASH_REPLACEMENT
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);
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const markedDownOutput = marked(withHash);
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return markedDownOutput;
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}
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return marked(this.message);
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}
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get formattedMessage() {
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return this.formatMessage();
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}
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get plainText() {
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const strippedOutHtml = new DOMParser().parseFromString(
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this.formattedMessage,
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'text/html'
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);
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return strippedOutHtml.body.textContent || '';
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}
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}
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export default MessageFormatter;
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