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#import("dart:io");
#import("dart:utf");
#import('dart:json');
#import('dart:isolate', prefix:'isolate');
String API_KEY = "INSERT_KEY_HERE";

class Bot {
  Socket socket;
  bool sendNick = true;
  String botName = "dartBot";
  String botChannel = "#dartnews";
  String ircServer = "irc.freenode.net";
  String superUser = ':ficode!~ficode@gateway/tor-sasl/ficode';
  Bot() {
   socket = new Socket(ircServer,6667);
   socket.onError = (e) {};
   socket.onConnect = () {};
   socket.onData = () {
     var available = socket.available();
     if (available > 0) {
       ByteArray buffer = new ByteArray(available);
       int numBytes = socket.readList(buffer, 0, available);
       String data = decodeUtf8(buffer, 0, numBytes);
       
       if (!sendNick) {
         List<String> server_response = data.split(' ');
         String command_reply = server_response[0];
         switch (command_reply) {
           case 'PING':
             ircPong(server_response[1]);
             break;
             
           case superUser:
             if (server_response[1] == "PRIVMSG") {
               if (server_response[3] == ":printnews\r\n") {
                 isolate.spawnFunction(isolated_dart_news_stream).call("").then((Map m) {
                   m.forEach((k,String v) {
                     v = v.replaceAll('\r\n', "").replaceAll('\r', "").replaceAll("\n", "");
                     var send_to_channel = encodeUtf8("PRIVMSG ${botChannel} :${v} \r\n");
                     socket.writeList(send_to_channel, 0, send_to_channel.length);
                   });
                 });
               }
             }
             break;
         }
       }
     }
   };
   socket.onWrite = () {
     if (sendNick) {
       var nick = encodeUtf8("NICK ${botName}\r\n");
       var user = encodeUtf8("USER ${botName} ${ircServer} bla :${botName}\r\n");
       socket.writeList(nick, 0, nick.length);
       socket.writeList(user, 0, user.length);
       
       
       var join = encodeUtf8("JOIN ${botChannel}\r\n");
       socket.writeList(join, 0, join.length);
       sendNick = false; 
     } 
   }; 
  }
  
  ircPong(String s) {
    var pongEncoded = encodeUtf8("PONG ${s.trim()}");
    socket.writeList(pongEncoded, 0, pongEncoded.length);
  }
}

void isolated_dart_news_stream() {
  isolate.port.receive((msg, reply) {
    dart_news_stream().then((m) {
      reply.send(m);
      print(m); /// send news
      isolate.port.close();
    });
  });
}

void isolate_goo_gl_shortner() {
  isolate.port.receive((msg, reply) {
    goo_gl_shortner(msg).then((m) {
      reply.send(m);
      print(m);
      isolate.port.close();
    });
  });
}

void isolate_goog_gl_shortner_proc() {
  isolate.port.receive((msg, reply) {
    var dart_news = {};
    var args = ["-X", "POST","https://www.googleapis.com/urlshortener/v1/url", 
                "-H","Content-Type: application/json", "-d",'{"longUrl": "${msg["url"]}"}'];
    Process short_url_proc = new Process.run("curl", args, new ProcessOptions(),
      (errorCode, stdout, stderr) {
      if (errorCode == 0) {
        Map short_url_map = JSON.parse(stdout);
        dart_news[short_url_map["id"]] = "g+/#dartlang: ${msg["title"].trim()} ${short_url_map["id"]}";
      } 
      reply.send(dart_news);
      isolate.port.close();
    });
  });
}

Future goo_gl_shortner(dart_items) {
  Completer completer = new Completer();
  Map dart_news = {};
  List<Future> shortner_procs = new List<Future>();
  dart_items.forEach((item) => shortner_procs.add(isolate.spawnFunction(isolate_goog_gl_shortner_proc).call(item)));
  
  Futures.wait(shortner_procs).transform((List<Map> values) {
    values.forEach((Map m) => m.getKeys().forEach((k) => dart_news[k] = m[k]));
    completer.complete(dart_news);
  });
  
  return completer.future;
}

Future dart_news_stream() {
  Completer complete = new Completer();
  // Since we do not have https in HttpClient, going to run with curl for now.
  String activity_query = "%23dartlang";
  String gplus_url = "https://www.googleapis.com/plus/v1/activities?query=${activity_query}&pp=1&key=${API_KEY}";
  
  Map dart_news = {};
  Process p = new Process.run("curl", [gplus_url], new ProcessOptions(),
    (exitCode, stdout, stderr) {
    if (exitCode == 0) {
      Map dart_gplus_activities = JSON.parse(stdout);
      List<Map> dart_items = dart_gplus_activities["items"];
      isolate.spawnFunction(isolate_goo_gl_shortner).call(dart_items).then((Map m) => complete.complete(m));
    }
  });

  return complete.future;
}


void main() {
  Bot b = new Bot();
}