package com.beem.project.beem.ui;

import java.util.ArrayList;

import android.app.ListActivity;

import android.content.ComponentName;

import android.content.Intent;

import android.content.IntentFilter;

import android.content.ServiceConnection;

import android.os.Bundle;

import android.os.IBinder;

import android.os.RemoteException;

import android.view.KeyEvent;

import android.view.View;

import android.view.View.OnKeyListener;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.CheckedTextView;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.AdapterView.OnItemClickListener;

import com.beem.project.beem.BeemService;

import com.beem.project.beem.R;

import com.beem.project.beem.service.Contact;

import com.beem.project.beem.service.aidl.IRoster;

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

import com.beem.project.beem.utils.BeemBroadcastReceiver;

/**

 * That activity permit to manage user groups.

 * @author nikita

 */

public class GroupList extends ListActivity {

    private static final Intent SERVICE_INTENT = new Intent();

    private final ServiceConnection mServConn = new BeemServiceConnection();

    private BeemBroadcastReceiver mReceiver;

    private IXmppFacade mXmppFacade;

    private IRoster mRoster;

    private String mJID;

    private ArrayAdapter<String> mGroups;

    private Contact mContact;

    private TextView mText;

    private final ArrayList<String> mStrings = new ArrayList<String>();

    static {

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

    }

    /**

     * Constructor.

     */

    public GroupList() {

    }

    @Override

    public void onCreate(Bundle savedInstanceState) {

	super.onCreate(savedInstanceState);

	setContentView(R.layout.group_list);

	mReceiver = new BeemBroadcastReceiver(mServConn);

	mContact = getIntent().getParcelableExtra("contact");

	mJID = mContact.getJID();

	final ListView listView = getListView();

	listView.setItemsCanFocus(false);

	listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

	listView.setOnItemClickListener(new GroupOnItemClickListener());

	mText = (TextView) findViewById(R.id.GroupListText);

	mText.setOnKeyListener(new GroupListOnKeyListener());

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void onResume() {

	super.onResume();

	this.registerReceiver(mReceiver, new IntentFilter(BeemBroadcastReceiver.BEEM_CONNECTION_CLOSED));

	bindService(new Intent(this, BeemService.class), mServConn, BIND_AUTO_CREATE);

	mReceiver.setBinded();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void onPause() {

	super.onPause();

	this.unregisterReceiver(mReceiver);

	if (mReceiver.isBinded())

	    unbindService(mServConn);

    }

    /**

     * init activity list adapter.

     */

    private void setAdapter() {

	try {

	    for (String group : mRoster.getGroupsNames()) {

		mStrings.add(group);

	    }

	    mGroups = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice, mStrings);

	    setListAdapter(mGroups);

	    mContact = mRoster.getContact(mJID);

	    for (String group : mContact.getGroups()) {

		getListView().setItemChecked(mGroups.getPosition(group), true);

	    }

	} catch (RemoteException e) {

	    e.printStackTrace();

	}

    }

    /**

     * Event when group is added.

     */

    private class GroupListOnKeyListener implements OnKeyListener {

	/**

	 * Constructor.

	 */

	public GroupListOnKeyListener() {

	}

	@Override

	public boolean onKey(View v, int keyCode, KeyEvent event) {

	    if (event.getAction() == KeyEvent.ACTION_DOWN) {

		switch (keyCode) {

		    case KeyEvent.KEYCODE_DPAD_CENTER:

		    case KeyEvent.KEYCODE_ENTER:

			if (mText.getText().length() == 0)

			    return false;

			String groupname = mText.getText().toString();

			mGroups.add(groupname);

			mText.setText(null);

			return true;

		    default:

			return false;

		}

	    }

	    return false;

	}

    }

    /**

     * Event click on list group contact.

     */

    private class GroupOnItemClickListener implements OnItemClickListener {

	/**

	 * Constructor.

	 */

	public GroupOnItemClickListener() {

	}

	@Override

	public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) {

	    CheckedTextView textView = (CheckedTextView) v;

	    if (!textView.isChecked()) {

		try {

		    mRoster.addContactToGroup(textView.getText().toString(), mJID);

		} catch (RemoteException e) {

		    e.printStackTrace();

		}

	    } else {

		try {

		    mRoster.removeContactFromGroup(textView.getText().toString(), mJID);

		} catch (RemoteException e) {

		    e.printStackTrace();

		}

	    }

	}

    }

    /**

     * The ServiceConnection used to connect to the Beem service.

     */

    private class BeemServiceConnection implements ServiceConnection {

	/**

	 * Constructor.

	 */

	public BeemServiceConnection() {

	}

	@Override

	public void onServiceConnected(ComponentName name, IBinder service) {

	    mXmppFacade = IXmppFacade.Stub.asInterface(service);

	    try {

		mRoster = mXmppFacade.getRoster();

		setAdapter();

	    } catch (RemoteException e) {

		e.printStackTrace();

	    }

	}

	@Override

	public void onServiceDisconnected(ComponentName name) {

	    mXmppFacade = null;

	    mRoster = null;

	}

    }

}