ChatMoreMagicLinks.user.js

// ==UserScript==
// @name         Chat More Magic Links
// @description  Some magic links are not parsed in Stack Overflow Chat. This script parses and submit expanded magic links via an edit to your latest message.
// @homepage     https://github.com/samliew/SO-mod-userscripts
// @author       @samliew
// @version      1.4.1
//
// @include      https://chat.stackoverflow.com/rooms/*
// ==/UserScript==

(function() {
    'use strict';

    const mainDomain = 'https://' + location.hostname.replace('chat.', '');
    const _fkey = $('#fkey').val();
    const _uid = CHAT.CURRENT_USER_ID;


    function updateMessage(mid, message) {

        // Fire and forget
        $.post(`/messages/${mid}`, {
            fkey: _fkey,
            text: message
        });
        //console.log('updateMessage', mid, message);
    }


    function getMessageRawString(mid) {
        return new Promise(function(resolve, reject) {
            $.get(`/messages/${mid}/history`)
                .done(function(data) {
                    const str = $('.monologue b', data).filter((i,el) => el.innerText == 'said:').next('.message-source').text().trim();
                    resolve(str);
                })
                .fail(reject);
        });
    }


    function convertMagicLinksInMessage(msg) {
        msg = msg.replace(/\[mcve\](?!\()/gi, `[Minimal, Complete, and Verifiable example](${mainDomain}/help/mcve)`);
        msg = msg.replace(/\[help\](?!\()/gi, `[help center](${mainDomain}/help)`);
        msg = msg.replace(/\[help\/on-topic\](?!\()/gi, `[help center](${mainDomain}/help/on-topic)`);
        msg = msg.replace(/\[help\/dont-ask\](?!\()/gi, `[help center](${mainDomain}/help/dont-ask)`);
        msg = msg.replace(/\[help\/behavior\](?!\()/gi, `[help center](${mainDomain}/help/behavior)`);
        msg = msg.replace(/\[meta-help\](?!\()/gi, `[help center](${mainDomain}/help/whats-meta)`);
        msg = msg.replace(/\[tour\](?!\()/gi, `[tour](${mainDomain}/tour)`);
        msg = msg.replace(/\[co(nduct|c)\](?!\()/gi, `[Code of Conduct](${mainDomain}/conduct)`);
        msg = msg.replace(/\[chat\](?!\()/gi, `[Stack Overflow Chat](https://${location.hostname})`);
        msg = msg.replace(/\[socvr\](?!\()/gi, `[SOCVR](https://chat.stackoverflow.com/rooms/41570/so-close-vote-reviewers)`);
        msg = msg.replace(/\[somu\](?!\()/gi, `[Stack Overflow Moderation Userscripts *by Samuel Liew*](https://github.com/samliew/SO-mod-userscripts/blob/master/README.md)`);
        return msg;
    }


    function checkLastMessage() {
        const lastMessage = $('.user-container.mine .message').last();

        // If last message has already been handled, ignore
        if(lastMessage.hasClass('js-magiclinks')) return;
        lastMessage.addClass('js-magiclinks');

        // If last message has already been deleted, ignore
        if(lastMessage.hasClass('cmmt-deleted')) return;

        // If last message has already been edited, ignore
        if(lastMessage.find('.edits').length > 0) return;

        // Required
        if(typeof lastMessage.attr('id') === 'undefined') return;
        const mid = Number(lastMessage.attr('id').replace(/[^\d]/g, ''));
        if(isNaN(mid)) return;

        getMessageRawString(mid)
            .then(function(rawMessage) {
                const parsedMessage = convertMagicLinksInMessage(rawMessage);
                //console.log(mid, rawMessage, parsedMessage);

                if(rawMessage.length !== parsedMessage.length && rawMessage !== parsedMessage) {
                    updateMessage(mid, parsedMessage);
                }
            });
    }


    function doPageload() {

        // Occasionally, check last message and parse it
        setInterval(checkLastMessage, 2000);
    }


    // On page load
    doPageload();

})();