simple dart bot that joins irc.freenode.net/#dart

dartIrcbot.dart

#import("dart:io");
#import("dart:utf");

class Bot {
  Socket socket;
  bool sendNick = true;
  Bot() {
   socket = new Socket("irc.freenode.net",6667);
   socket.onError = (e) {
     print("onError: ${e}");
   };
   
   socket.onConnect = () {
     print("onConnect: ");
   };
   
   socket.onData = () {
     print("onData: ");
     var available = socket.available();
     if (available > 0) {
       ByteArray buffer = new ByteArray(available);
       int numBytes = socket.readList(buffer, 0, available);
       print("numBytes = ${numBytes}");
       String data = decodeUtf8(buffer, 0, numBytes);
       print("data = ${data}");
       
       if (!sendNick) {
         List<String> server_response = data.split(' ');
         print("server_response = ${server_response}");
         String command_reply = server_response[0];
         print("command_reply = ${command_reply}");
         switch (command_reply) {
           case 'PING':
             print("responding to ping");
             ircPong(server_response[1]);
             break;
         }
       }
     }
   };
   
   socket.onWrite = () {
     print("onWrite: ");
     
     if (sendNick) {
       String n = "NICK dartBot\r\n";
       String u = "USER dartBot irc.freenode.net bla :dartBot\r\n";
       var nn = encodeUtf8(n);
       var uu = encodeUtf8(u);
       socket.writeList(nn, 0, nn.length);
       socket.writeList(uu, 0, uu.length);
       
       String j = "JOIN #dart\r\n";
       var jj = encodeUtf8(j);
       socket.writeList(jj, 0, jj.length);
       sendNick = false; 
     } 
     
   };
   
  }
  
  ircPong(String s) {
    print("ircPong(String ${s})");
    StringBuffer sb = new StringBuffer();
    String p = s.trim();
    sb.add("PONG ${p}");
    String pong = sb.toString();
    print ("ircPong = ${pong}");
    var pp = encodeUtf8(pong);
    socket.writeList(pp, 0, pp.length);
  }
}



void main() {
  Bot b = new Bot();
  
  print("Hello World");
}