music: no logic yet just soundcloud client id grabbing

src/modules/music.js

@@ -0,0 +1,46 @@
+const fetch = require("node-fetch");
+const ytdl = require("ytdl-core");
+const Eris = require("eris");
+
+const REGEX_YOUTUBE = /^(https?:\/\/)?(www\.)?(youtube\.com|youtu\.?be)\/.+$/;
+const REGEX_YOUTUBE_PLAYLIST =
+  /^(https?:\/\/)?(www\.)?(youtube\.com|youtu\.?be)\/playlist\?list=(.+)$/;
+const REGEX_YOUTUBE_PLAYLIST_SHORT = /^PL[a-zA-Z0-9-_]{1,32}$/;
+const REGEX_SOUNDCLOUD =
+  /^((https?:\/\/)?(www\.|m\.)?soundcloud\.com\/|sc:).+\/.+$/;
+const REGEX_SOUNDCLOUD_PLAYLIST =
+  /^((https?:\/\/)?(www\.|m\.)?soundcloud\.com\/|sc:).+\/(sets\/.+|likes|tracks)$/;
+const REGEX_FILE =
+  /^(https?:\/\/)?.*\..*\/.+\.(mp3|ogg|flac|wav|webm|mp4|mov|mkv)$/;
+
+let SOUNDCLOUD_CLIENTID;
+
+hf.voiceStorage = hf.voiceStorage || new Eris.Collection();
+
+// https://stackoverflow.com/a/12646864 § "Updating to ES6 / ECMAScript 2015"
+function shuffleArray(array) {
+  for (let i = array.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [array[i], array[j]] = [array[j], array[i]];
+  }
+}
+
+async function getSoundcloudClientID() {
+  if (SOUNDCLOUD_CLIENTID != null) {
+    return SOUNDCLOUD_CLIENTID;
+  }
+  const page = await fetch("https://soundcloud.com").then((res) => res.text());
+  const scripts = page
+    .match(/<script crossorigin src="(.+?)"><\/script>/g)
+    .reverse();
+  for (const script of scripts) {
+    const url = script.match(/src="(.+?)"/)[1];
+    const contents = await fetch(url).then((res) => res.text());
+    if (/,client_id:"(.+?)",/.test(contents)) {
+      const client_id = contents.match(/,client_id:"(.+?)",/)[1];
+      SOUNDCLOUD_CLIENTID = client_id;
+      return SOUNDCLOUD_CLIENTID;
+    }
+  }
+  return null;
+}