Add Last.fm API calls

.gitignore

@@ -0,0 +1,3 @@
+# JetBrains IDEs
+/.idea
+/node_modules

lib/BansheeBot.js

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+/**
+ * @author Timur Kuzhagaliyev <tim.kuzh@gmail.com>
+ * @copyright 2017
+ * @license GPL-3.0
+ */
+
+const Discord = require("discord.js");
+const LastFmNode = require('lastfm').LastFmNode;
+
+class BansheeBot {
+
+    /**
+     * @param {{discordToken: string, lastFmApiKey: string, lastFmSecret: string, lastFmUserAgent: string, lastFmUsername: string}} config
+     */
+    constructor(config) {
+        this.config = config;
+        this.client = new Discord.Client();
+        this.lastfm = new LastFmNode({
+            api_key: this.config.lastFmApiKey,
+            secret: this.config.lastFmSecret,
+            useragent: this.config.lastFmUserAgent,
+        });
+    }
+
+    start() {
+        return Promise.resolve()
+
+            .then(() => console.log('Connecting to Discord...'))
+            .then(() => this.client.login(this.config.discordToken))
+            .then(() => console.log('Connected!'))
+
+            .then(() => console.log('Searching for the music channel...'))
+            .then(() => this.client.channels.find(channel => channel.name && channel.name.match(/^music/i)))
+            .then(channel => {
+                if (!channel) throw new Error('Could not find the music channel!');
+                this.musicChannel = channel;
+            })
+
+            .then(() => console.log('Connecting to Last.fm stream...'))
+            .then(() => lastfm.stream(this.config.lastFmUsername))
+            .then(lastFmStream => {
+                lastFmStream.on('nowPlaying', (track) => {
+                    this.musicChannel.send('Now playing: ' + track.name);
+                });
+            })
+
+            .catch(error => console.error(error));
+    }
+
+}
+
+module.exports = BansheeBot;

now-playing-bot.js

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+/**
+ * @author Timur Kuzhagaliyev <tim.kuzh@gmail.com>
+ * @copyright 2017
+ * @license MIT
+ */
+
+const BansheeBot = require('./lib/BansheeBot');
+
+let config = {
+    discordToken: process.env.BOT_TOKEN,
+    lastFmApiKey: process.env.LASTFM_API_KEY,
+    lastFmSecret: process.env.LASTFM_SECRET,
+    lastFmUserAgent: process.env.LASTFM_USER_AGENT,
+    lastFmUsername: process.env.LASTFM_USERNAME
+};
+let bot = new BansheeBot(config);
+bot.start();

package-lock.json

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+{
+  "name": "BansheeBot",
+  "version": "0.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "lastfm": {
+      "version": "0.9.2",
+      "resolved": "https://registry.npmjs.org/lastfm/-/lastfm-0.9.2.tgz",
+      "integrity": "sha1-0Ayi47MOtITlEHkodVJZAOTXfYg=",
+      "requires": {
+        "underscore": "1.6.0"
+      }
+    },
+    "underscore": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.6.0.tgz",
+      "integrity": "sha1-izixDKze9jM3uLJOT/htRa6lKag="
+    }
+  }
+}

package.json

@@ -8,6 +8,7 @@
   },
   "dependencies": {
     "discord.js": "11.1.0",
+    "lastfm": "^0.9.2",
     "request": "2.81.0"
   }
 }