package mug13;

/*
* This is the network inteface used by the client in the Grinnell MUG.
*
* @author Brett McMillian
* @author Louisa Poythress
* @author Michael Billups
*
* @Version 1.3 -	Can send and receive objects to and from the server.
*
*/

import java.io.*;
import java.net.*;

public class Client
{

//***************
// Fields
//***************
	Socket clientSocket = null;
	ObjectOutputStream oosFromClient;
	ObjectInputStream oisFromServer;
	//Client username
	String name;
	
//***************
// Constructors
//***************

	public Client(String name)
		throws UnknownHostException, IOException, ClassNotFoundException
	{
		this.name = name;
		
		//Setup a BufferedReader to read the port# and
		//IP Address of the server from specs.txt
		int port = 0;
		String ipAddress;
		FileReader fr = new FileReader("specs.txt");
		BufferedReader br = new BufferedReader(fr);
		InetAddress address = null;
			
		try {
			br.skip(6);
			Integer intPort = new Integer(br.readLine());
			port = intPort.intValue();
			br.skip(4);
			ipAddress = br.readLine();
			address = InetAddress.getByName(ipAddress);
		}
		catch (UnknownHostException e) {
			System.err.println("Don't know about host.");
			System.exit(1);
		} 
		catch (IOException e) {
			System.err.println("Couldn't get I/O for the connection.");
			System.exit(1);
		}
		
		//Create a new socket with IP address address on port# port
		this.clientSocket = new Socket(address, port);

		//Open an output stream.
		this.oosFromClient = new ObjectOutputStream(clientSocket.getOutputStream());

		//Open an input stream.
		this.oisFromServer = new ObjectInputStream(clientSocket.getInputStream());

	}
	
//***************
// Methods
//***************	
	public boolean login(String pswd)
		throws UnknownHostException, IOException, ClassNotFoundException
	{
		//Send username and password to the Server.
		this.oosFromClient.writeObject(this.name);
		this.oosFromClient.writeObject(pswd);
		this.oosFromClient.writeObject("login");
	
		//Receive instructions back from the server.
		String loginTest = (String) this.oisFromServer.readObject();
		
		if (loginTest.equals("Login Failed"))
			return false;
		
		return true;
	}	
	
	public void setAccount(String pswd)
		throws UnknownHostException, IOException, ClassNotFoundException
	{
		//Send username and password to the Server.
		this.oosFromClient.writeObject(this.name);
		this.oosFromClient.writeObject(pswd);
		this.oosFromClient.writeObject("update");
	}
	
	public void getInstructions(Action act)
		throws UnknownHostException, IOException, ClassNotFoundException
	{
		//Send interaction to the Server.
		this.oosFromClient.writeObject(act.getSubject());
		this.oosFromClient.writeObject(act.getVerb());
		if (act.getObject() == null)
			this.oosFromClient.writeObject("none");
		else
			this.oosFromClient.writeObject(act.getObject());
	}

	public void broadcast(String message, String[] listOfPeople)
		throws UnknownHostException, IOException, ClassNotFoundException
	{
		//Tell the server that there is an incoming broadcast.
		oosFromClient.writeObject("broadcast");
		oosFromClient.writeObject("");
		oosFromClient.writeObject("");
		
		//Send the broadcast.
		oosFromClient.writeObject(message);
		oosFromClient.writeObject(listOfPeople);
	}
	
	//Get the input stream for the client
	//Note: Used for creating the ReceiveThread
	public ObjectInputStream getIS()
	{
		return this.oisFromServer;
	}

	public void closeConnection()
		throws UnknownHostException, IOException, ClassNotFoundException
	{
		//Tell the server to drop the connection with the client
		this.oosFromClient.writeObject("exit");
		this.oosFromClient.writeObject("");
		this.oosFromClient.writeObject("");
		
		//Close input and output streams.
		this.oosFromClient.close();
		this.oisFromServer.close();
		
		//Close the connection to the server.
		this.clientSocket.close();
	}

}