import org.jivesoftware.smack.*
import org.jivesoftware.smack.packet.*
import org.jivesoftware.smack.filter.*
import java.text.*

def gmailId,gmailPwd,targetId
if(args.length==2){
  gmailId=args[0]
  gmailPwd=args[1]
}else{
  print 'gmail id:       '
  gmailId=System.in.readLine()
  print 'gmail password: '
  gmailPwd=System.in.readLine()
}

XMPPConnection g
succ=false
for(i in 0..5){
  try{
    println 'connecting to google talk server..'
    g = new XMPPConnection("talk.google.com", 5222,"gmail.com")
    g.login(gmailId,gmailPwd)
    succ=true
    break
  }catch(Exception e){
    println 'Exception: '+e.message
    //e.printStackTrace()
  }
}

if(!succ){
  println 'fail.'
  System.exit(0)
}

println 'isConnected:' +g.isConnected()
println 'isAuthenticated:'+g.isAuthenticated() 
println 'isAnonymous:'+g.isAnonymous() 
println 'isUsingTLS:'+g.isUsingTLS()

def iter=g.roster.entries
while(iter.hasNext()){
  println iter.next()
}

g.addPacketListener(new EchoDate(g),new MyFilter())

chat=g.createChat(gmailId+'@gmail.com')
println 'thread id:'+ chat.getThreadID()
chat.setFilteredOnThreadID(false)
chat.sendMessage('hi, there. My name is robot Jove. Now is '+new Date())
while(true)
  chat.nextMessage()

class EchoDate implements PacketListener{
  def connection
  def df=new SimpleDateFormat('MM/dd/yy HH:mm:ss.SSS')
  EchoDate(connection){this.connection=connection}
  void processPacket(Packet packet){
    if(packet instanceof Message){
      def from=packet.from
      
      if(from.indexOf('jovezhong@gmail.com')>=0){
        println 'got ack'
        return
      }  

      def txt=packet.body
      println "get message from ${from}: ${txt}"
      
      def msg=new Message(from)  
      switch(txt){
        case 'exit':
          connection.close()
          System.exit(0)
        case 'hi':
          msg.body='hi :) type help for usage'
          break
        case 'bye':
          msg.body='bye~ Have a good day! :)'
          break    
        case 'help':
          msg.body='I am the first robot made by Jove(jovezhong@gmail.com). However he is such an *idiot* that I have only little A.I :( .\nnow: for current timestamp'  
          break
        case 'now':
          msg.body="now is ${df.format(new Date())}"    
          break
        default:  
          msg.body=":-( what do you mean by ' *${txt}* '? type help for usage"
      }
      println "send reply:${msg.body}"
      connection.sendPacket(msg)
    }
  }           
}

class MyFilter implements PacketFilter{
  public boolean accept(Packet packet) {return true}
}