Merge pull request #10 from epai/songlinkify

Add "songlinkify" function

functions/songlinkify.js

@@ -0,0 +1,38 @@
+/*
+ * Songlinkify spotify and youtube links.
+*/
+var request = require('request');
+
+// First, checks if it isn't implemented yet.
+if (!String.format) {
+  String.format = function(format) {
+    var args = Array.prototype.slice.call(arguments, 1);
+    return format.replace(/{(\d+)}/g, function(match, number) {
+      return typeof args[number] != 'undefined'
+        ? args[number]
+        : match
+      ;
+    });
+  };
+}
+
+/* detects any youtube or spotify links */
+module.exports.matchPattern = /\b((https?:\/\/)?(www\.)?open\.spotify\.com\/track[^\s]+)|((https?:\/\/)?(www\.)?youtube\.com\/watch[^\s]+)|((https?:\/\/)?(www\.)?m\.youtube\.com\/watch[^\s]+)\b/g
+
+module.exports.action = function(api, message, cb) {
+  var allSongLinks = message.body.match(module.exports.matchPattern);
+  var targetUrl = "http://music.hms.space/get_music_info?link="
+  for (var i=0; i < allSongLinks.length; i++) {
+    var link = allSongLinks[i];
+    request(targetUrl + link, function(err, res, body) {
+      if (!err && res.statusCode === 200) {
+        var data = JSON.parse(body);
+        if (data['songlink'] !== '') {
+          var frankie_msg = String.format("{0} - {1}:  {2}" + Array(30).join(" "),
+            data['artists'][0], data['title'], data['songlink']);
+          api.sendMessage(frankie_msg, message.threadID);
+        }
+      }
+    });
+  }
+}