/**
 * 
 */
package com.beem.project.beem;

import java.util.LinkedList;
import java.util.List;

import android.app.Activity;
import android.app.Application;
import android.app.ProgressDialog;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteException;

import com.beem.project.beem.service.aidl.IBeemConnectionListener;
import com.beem.project.beem.service.aidl.IXmppConnection;
import com.beem.project.beem.service.aidl.IXmppFacade;

/**
 * The Beem application. This class has some methods utiliy needs by the activities.
 * @author darisk
 */
public class BeemApplication extends Application {

    private static BeemApplication mBeemApp;
    private static final Intent SERVICE_INTENT = new Intent();
    private IXmppFacade mFacade;
    private Context mApplicationContext;
    private Resources mPrivateResources;
    private List<Message> mQueue = new LinkedList<Message>();
    private boolean mIsConnected;
    private IXmppConnection mConnection;
    private ProgressDialog mProgressDialog;
    private ConnectionListener mConnectionListener = new ConnectionListener();

    static {
	SERVICE_INTENT.setComponent(new ComponentName("com.beem.project.beem", "com.beem.project.beem.BeemService"));
    }

    private ServiceConnection mServConn = new ServiceConnection() {

	@Override
	public void onServiceDisconnected(ComponentName name) {
	    mFacade = null;
	    mIsConnected = false;
	}

	@Override
	public void onServiceConnected(ComponentName name, IBinder service) {
	    mIsConnected = true;
	    mFacade = IXmppFacade.Stub.asInterface(service);
	    try {
		mConnection = mFacade.createConnection();
		if (!mConnection.isAuthentificated()) {
		    mProgressDialog.show();
		    mConnection.addConnectionListener(mConnectionListener);
		    mApplicationContext.startService(BeemApplication.SERVICE_INTENT);
		}
	    } catch (RemoteException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	    }
	    synchronized (mQueue) {
		for (Message msg : mQueue) {
		    msg.sendToTarget();
		}
		mQueue.clear();
	    }
	}
    };

    /**
     * Constructor.
     */
    public BeemApplication() {
	// TODO Auto-generated constructor stub
    }

    /**
     * Get the Beem application for an activity.
     * @param activity the activity which want the Beem application
     * @return the Beem application
     */
    public static BeemApplication getApplication(Activity activity) {
	if (mBeemApp == null) {
	    mBeemApp = new BeemApplication();
	}
	mBeemApp.mProgressDialog = new ProgressDialog(activity);
	mBeemApp.mProgressDialog.setTitle("Beem");
	mBeemApp.mProgressDialog.setIcon(R.drawable.logo);
	mBeemApp.mProgressDialog.setMessage("Connexion en cours");
	mBeemApp.mApplicationContext = activity.getApplication();
	mBeemApp.mPrivateResources = activity.getResources();
	mBeemApp.onCreate();
	return mBeemApp;
    }

    /**
     * Start the beem service.
     */
    public synchronized void startBeemService() {
	if (!mIsConnected) {
	    // the connection will be made on service connect
	    mApplicationContext.bindService(BeemApplication.SERVICE_INTENT, mServConn, BIND_AUTO_CREATE);
	}
    }

    /**
     * Stop the Beem service.
     */
    public synchronized void stopBeemService() {
	if (mIsConnected) {
	    Intent intent = new Intent();
	    intent.setComponent(new ComponentName("com.beem.project.beem", "com.beem.project.beem.BeemService"));
	    mApplicationContext.unbindService(mServConn);
	    mApplicationContext.stopService(intent);
	    mIsConnected = false;
	}
    }

    /**
     * Get the facade to use to access the Beem service.
     * @return the facade or null if the application is not connected to the beem service.
     */
    public IXmppFacade getXmppFacade() {
	return mFacade;
    }

    /**
     * Add a methode to execute when the application is connected to the Beem service.
     * @param target the handler which will execute the callback
     * @param callback the callback to execute
     */
    public void callWhenServiceConnected(Handler target, Runnable callback) {
	Message msg = Message.obtain(target, callback);
	if (!mIsConnected) {
	    msg.sendToTarget();
	} else {
	    startBeemService();
	    synchronized (mQueue) {
		mQueue.add(msg);
	    }
	}
    }

    /**
     * Tell if we are connected with the Beem Service.
     * @return true if connected false otherwise
     */
    public boolean isConnected() {
	return mIsConnected;
    }

    /**
     * Connection listener use to hide the progress dialog.
     * @author darisk
     */
    private class ConnectionListener extends IBeemConnectionListener.Stub {

	/**
	 * Constructor.
	 */
	public ConnectionListener() {

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void connectionClosed() throws RemoteException {
	    // TODO Auto-generated method stub

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void connectionClosedOnError() throws RemoteException {
	    // TODO Auto-generated method stub
	    // afficher une notification et reafficher le progress dialog
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void onConnect() throws RemoteException {
	    // TODO Auto-generated method stub
	    mProgressDialog.dismiss();
	    mFacade.changeStatus();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void reconnectingIn(int seconds) throws RemoteException {
	    // TODO Auto-generated method stub
	    mProgressDialog.show();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void reconnectionFailed() throws RemoteException {
	    // TODO Auto-generated method stub

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void reconnectionSuccessful() throws RemoteException {
	    // TODO Auto-generated method stub

	}

    }

}
