module/nickserv: Made nickserv less async (fixes #95). (#172)

Changed arrow func to function for logging.

Now using regex for nickserv success message tests.

conf/nickserv.example.json

@@ -1,3 +1,5 @@
 {
-	"password" : "dicks"
+  "nickserv": "nickserv",
+  "password" : "dicks",
+  "successtext": "^You are now identified for "
 }

modules/nickserv.js

@@ -1,31 +1,48 @@
-var config = null;
-var bot = null;
+let config = null;
+let bot = null;
+let log = null;
 
-module.exports.init = function(b) {
-	bot = b;
+// Only respond to a nickserv notice once.
+let identified = false;
 
-	bot.getConfig('nickserv.json', function(err, conf) {
-		console.log(err);
-		if(err) return;
+module.exports.init = function (b) {
+  bot = b;
+  log = this.log;
 
-		config = conf;
+  bot.getConfig('nickserv.json', (err, conf) => {
+    if (err) {
+      log.error(err);
+      return;
+    }
 
-		bot.sayTo(config.nickserv || 'nickserv', 'identify', bot.client.nick, config.password);
-	});
-}
+    config = conf;
 
-module.exports.run_register = function(r, parts, reply) {
-	console.log(config);
-	if(config === null) {
-		reply("Please configure a password");
-		return;
-	}
+    bot.sayTo(config.nickserv || 'nickserv', 'identify', bot.client.nick, config.password);
+  });
+};
 
-	if(parts.length < 1) {
-		reply("Usage: !register <email address>");
-		return;
-	}
+module.exports.pmnotice = (text, from) => {
+  const nickServText = config.nickservsuccess || '^You are now identified for ';
 
-	bot.sayTo(config.nickserv || 'nickserv', 'register', config.password, parts[0]);
-	reply("Registered!");
-}
+  if (!identified && from.toLowerCase() === (config.nickserv || 'nickserv')
+      && new RegExp(nickServText, 'i').test(text)) {
+    bot.joinChannels();
+    identified = true;
+    log.info('Identified with nickserv, rejoining channels.');
+  }
+};
+
+module.exports.run_register = (r, parts, reply) => {
+  if (config === null) {
+    reply('Please configure a password');
+    return;
+  }
+
+  if (parts.length < 1) {
+    reply('Usage: !register <email address>');
+    return;
+  }
+
+  bot.sayTo(config.nickserv || 'nickserv', 'register', config.password, parts[0]);
+  reply('Registered!');
+};