Files
discord-clone/utils/parseMessageBody.ts
2023-04-20 21:19:22 -05:00

50 lines
1.7 KiB
TypeScript
Executable File

import { IChannel } from '~/types';
export default function parseBody(body: string, activeChannel: IChannel) {
if (!activeChannel.id) throw new Error('No active channel');
body = escape(body);
const rules = [
//bold, italics and paragragh rules
[/&#42;&#42;\s?([^\n]+)&#42;&#42;/g, '<b>$1</b>'],
[/&#42;\s?([^\n]+)&#42;/g, '<i>$1</i>'],
[/&#95;&#95;\s?([^\n]+)&#95;&#95;/g, '<u>$1</u>'],
[/&#126;&#126;\s?([^\n]+)&#126;&#126;/g, '<s>$1</s>'],
// code lines and blocks
[/&#96;&#96;&#96;(.+?)&#96;&#96;&#96;/g, '<pre class=\'codeblock\'><code>$1</code></pre>'],
[/(?<!&#96;)&#96;(.+?)&#96;(?!&#96;)/g, '<code class=\'inline-code\'>$1</code>'],
];
rules.forEach(([rule, template]) => {
if (!rule || !template || typeof template !== 'string') throw new Error('Rule or template is undefined or a regexp (how the actual)');
body = body.replace(rule, template);
});
/*
* Matches string in the format of: <@[cuid]>
* for example: "<@clfhiwt920003fb4jd5dbo2sy>", "<@clfhiwiah0000fb4jenr3j6l1>", and "<@clfhizvyt000nfb4j16kjnell>" would all be matched
*/
const mentionRegex = /&#60;&#64;(([a-z]|[0-9]){25})&#62;/g;
const mentions = body.match(mentionRegex);
if (mentions) {
const participants = (activeChannel.DM) ? activeChannel.dmParticipants : activeChannel.server.participants;
if (!participants) throw new Error(`participants in channel "${activeChannel.id}" not found"`);
mentions.forEach((e: string) => {
const id = e.split('&#60;&#64;')[1]?.split('&#62;')[0];
if (!id) return;
const user = participants.find((e) => e.id === id);
if (!user) return;
body = body.split(e).join(`@${user.username}`);
});
}
return body;
}
function escape(s: string) {
return s.replace(
/[^0-9A-Za-z ]/g,
c => '&#' + c.charCodeAt(0) + ';'
);
}