package com.beem.project.beem.ui;

import java.util.List;

import org.jivesoftware.smack.util.StringUtils;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.RemoteException;
import android.text.util.Linkify;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ScrollView;
import android.widget.TextView;

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.Message;
import com.beem.project.beem.service.PresenceAdapter;
import com.beem.project.beem.service.aidl.IBeemRosterListener;
import com.beem.project.beem.service.aidl.IChat;
import com.beem.project.beem.service.aidl.IChatManager;
import com.beem.project.beem.service.aidl.IChatManagerListener;
import com.beem.project.beem.service.aidl.IMessageListener;
import com.beem.project.beem.service.aidl.IRoster;
import com.beem.project.beem.service.aidl.IXmppFacade;

/**
 * This activity class provides the view for instant messaging after selecting a correspondant.
 * @author barbu
 */

public class SendIM extends Activity implements OnClickListener, OnKeyListener {

    private static final String TAG = "SEND_IM";
    private EditText mToSend;
    private SendIMDialogSmiley mSmyDialog;
    private SharedPreferences mSet;
    private Handler mHandler;
    private Contact mContact;
    private String mContactName;
    private IChatManager mChatManager;
    private IChatManagerListener mChatManagerListener;
    private IMessageListener mMessageListener;
    private IChat mChat;
    private TextView mText;
    private TextView mLogin;
    private TextView mChatState;
    private ScrollView mScrolling;
    private char mSpeak;

    private final ServiceConnection mServConn = new BeemServiceConnection();
    private IXmppFacade xmppFacade;
    public IRoster mRoster;
    private TextView mStatusText;

    /**
     * Constructor.
     */
    public SendIM() {
	super();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void onClick(View view) {
	sendText();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onCreate(Bundle saveBundle) {
	super.onCreate(saveBundle);
	setTheme(R.style.OldTheme);
	setContentView(R.layout.sendim);
	mHandler = new Handler();
	mChatManagerListener = new OnChatListener();
	mMessageListener = new OnMessageListener();
	mToSend = (EditText) findViewById(R.id.userText);
	mSet = getSharedPreferences("lol", MODE_PRIVATE);
	mSmyDialog = new SendIMDialogSmiley(this, mSet);
	mToSend.setOnClickListener(this);
	mToSend.setOnKeyListener(this);
	mLogin = (TextView) findViewById(R.id.sendimlogin);
	mChatState = (TextView) findViewById(R.id.sendimchatstate);
	try {
	    mContact = new Contact(getIntent().getData());
	    if (mRoster != null)
		mContact = mRoster.getContact(mContact.getJID());
	} catch (RemoteException e) {
	    // TODO Auto-generated catch block
	    e.printStackTrace();
	}
	mText = (TextView) findViewById(R.id.sendimlist);
	mScrolling = (ScrollView) findViewById(R.id.sendimscroll);
	mStatusText = (TextView) findViewById(R.id.sendimstatus);
	setViewHeader();
    }

    /**
     * Set the header information in the window.
     */
    private void setViewHeader() {
	Drawable avatar = getResources().getDrawable(R.drawable.avatar);
	ImageView imgV = (ImageView) findViewById(R.id.sendimavatar);
	imgV.setImageDrawable(avatar);
	mStatusText.setTextSize(12);
	mContactName = mContact.getName();
	if (mContactName == null || "".equals(mContactName)) {
	    mContactName = mContact.getJID();
	    mContactName = StringUtils.parseName(mContactName);
	    if ("".equals(mContactName))
		mContactName = mContact.getJID();
	}
	mLogin.setText(mContactName);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public final boolean onCreateOptionsMenu(Menu menu) {
	super.onCreateOptionsMenu(menu);
	MenuInflater inflater = getMenuInflater();
	inflater.inflate(R.menu.sendimmenu, menu);
	return true;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onDestroy() {
	super.onDestroy();
	if (mChatManager != null) {
	    try {
		mChatManager.removeChatCreationListener(mChatManagerListener);
		// TODO trouver quand detruire le chat
		// mChatManager.destroyChat(mChat);
	    } catch (RemoteException e) {
		Log.e(TAG, "mchat manager and SendIM destroy", e);
	    }
	}
    }

    /**
     * {@inheritDoc}
     */
    @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:
		    sendText();
		    return true;
		default:
		    return false;
	    }
	}
	return false;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onNewIntent(Intent intent) {
	super.onNewIntent(intent);
	mContact = new Contact(intent.getData());
	try {
	    if (mRoster != null)
		mContact = mRoster.getContact(mContact.getJID());
	} catch (RemoteException e) {
	    // TODO Auto-generated catch block
	    e.printStackTrace();
	}
	setViewHeader();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public final boolean onOptionsItemSelected(MenuItem item) {
	switch (item.getItemId()) {
	    case R.id.sendim_smiley:
		mSmyDialog.show();
		return true;
	    default:
		return false;
	}
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onPause() {
	super.onPause();
	try {
	    if (mChat != null)
		mChat.setOpen(false);
	} catch (RemoteException e) {
	    Log.d(TAG, "Error while closing chat", e);
	}
	unbindService(mServConn);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onResume() {
	super.onResume();
	bindService(new Intent(this, BeemService.class), mServConn, BIND_AUTO_CREATE);
	mScrolling.fullScroll(ScrollView.FOCUS_DOWN);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void onStart() {
	super.onStart();
	// TODO cancel the notification if any
	try {
	    if (mRoster != null)
		mContact = mRoster.getContact(mContact.getJID());
	} catch (RemoteException e) {
	    // TODO Auto-generated catch block
	    e.printStackTrace();
	}
	setViewHeader();

    }

    private class BeemServiceConnection implements ServiceConnection {
	BeemRosterListener mBeemRosterListener = new BeemRosterListener();

	@Override
	public void onServiceConnected(ComponentName name, IBinder service) {
	    xmppFacade = IXmppFacade.Stub.asInterface(service);
	    try {
		if (mChatManager == null) {
		    mChatManager = xmppFacade.getChatManager();
		    mChatManager.addChatCreationListener(mChatManagerListener);
		}
		mRoster = xmppFacade.getRoster();
		if (mRoster != null) {
		    mRoster.addRosterListener(mBeemRosterListener);
		    // mContact.setStatus(mRoster.getPresence(mContact.getJID()));
		    if (mRoster.getContact(mContact.getJID()) != null) {
			mContact = mRoster.getContact(mContact.getJID());
			mStatusText.setText(mContact.getMsgState());
		    }
		}
		switchChat(mContact);
	    } catch (RemoteException e) {
		Log.e(TAG, "Error during chat manager creation", e);
	    }
	}

	@Override
	public void onServiceDisconnected(ComponentName name) {
	    xmppFacade = null;
	    try {
		mRoster.removeRosterListener(mBeemRosterListener);
	    } catch (RemoteException e) {
		e.printStackTrace();
	    }
	}
    }

    /**
     * Send a message to the contact over the XMPP connection. Also display it on activity view. TODO : Gerer
     * l'exception si la connexion se coupe pendant la conversation
     */
    private void sendText() {
	String text = mToSend.getText().toString();
	if (!text.equals("")) {
	    Message msg = new Message(mContact.getJID(), Message.MSG_TYPE_CHAT);
	    msg.setBody(text);
	    try {
		// TODO: PAs connecter au serveur BING grosse Error !
		// INTERDICTION !
		mChat.sendMessage(msg);
		if (mSpeak != 1)
		    mText.append(getString(R.string.SendIMYouSay, text));
		else
		    mText.append(getString(R.string.SendIMSameSpeaker, text));
		mToSend.setText(null);
		mScrolling.fullScroll(ScrollView.FOCUS_DOWN);
		mToSend.requestFocus();
		mSpeak = 1;
	    } catch (RemoteException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	    }
	}
    }

    /**
     * Show the message history.
     * @param messages list of message to display
     */
    private void showMessageList(List<Message> messages) {
	mText.setText("");
	mSpeak = 0;
	for (Message message : messages) {
	    String from = message.getFrom();
	    if (from == null) {
		if (mSpeak != 1)
		    mText.append(getString(R.string.SendIMYouSay, message.getBody()));
		else
		    mText.append(getString(R.string.SendIMYouSay, message.getBody()));
		mSpeak = 1;
	    } else {
		if (mSpeak != 2)
		    mText.append(getString(R.string.SendIMSays, mContactName, message.getBody()));
		else
		    mText.append(getString(R.string.SendIMSameSpeaker, message.getBody()));
		mSpeak = 2;
	    }
	}
	mScrolling.fullScroll(ScrollView.FOCUS_DOWN);
    }

    /**
     * Change the correspondant of the chat.
     * @param newContact New contact to chat with
     * @throws RemoteException if an errors occurs in the connection with the service
     */
    private void switchChat(Contact newContact) throws RemoteException {
	if (mChat != null)
	    mChat.setOpen(false);
	mChat = mChatManager.createChat(newContact, mMessageListener);
	showMessageList(mChat.getMessages());
	mChat.setOpen(true);
	mContact = newContact;
	mToSend.requestFocus();
    }

    /**
     * Listener for chat creation. (maybe not necessary)
     * @author darisk
     */
    private class OnChatListener extends IChatManagerListener.Stub {
	/**
	 * {@inheritDoc}
	 */
	@Override
	public void chatCreated(IChat chat, boolean locally) throws RemoteException {
	    Log.i("LOG", "chatCreated");
	}

    }

    private class BeemRosterListener extends IBeemRosterListener.Stub {

	@Override
	public void onEntriesAdded(List<String> addresses) throws RemoteException {
	    // TODO Auto-generated method stub

	}

	@Override
	public void onEntriesDeleted(List<String> addresses) throws RemoteException {
	    // TODO Auto-generated method stub

	}

	@Override
	public void onEntriesUpdated(List<String> addresses) throws RemoteException {
	    // TODO Auto-generated method stub

	}

	@Override
	public void onPresenceChanged(PresenceAdapter presence) throws RemoteException {
	    if (mContact.getJID().equals(StringUtils.parseBareAddress(presence.getFrom()))) {
		mContact.setStatus(mRoster.getPresence(StringUtils.parseBareAddress(presence.getFrom())));
		mHandler.post(new RunnableChange());
	    }
	}

	private class RunnableChange implements Runnable {
	    @Override
	    public void run() {
		mStatusText.setText(mContact.getMsgState());
		Linkify.addLinks(mStatusText, Linkify.WEB_URLS);
	    }
	}

	@Override
	public void onEntryDeleteFromGroup(String group, String jid) throws RemoteException {
	    // TODO Auto-generated method stub

	}

    }

    /**
     * Listener for new chat messages.
     * @author darisk
     */
    private class OnMessageListener extends IMessageListener.Stub {

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void processMessage(IChat chat, Message msg) throws RemoteException {

	    if (chat != mChat)
		return;
	    final Message m = msg;
	    Log.d("Message Type", "Le type du message : " + m.getType());
	    mHandler.post(new Runnable() {

		@Override
		public void run() {
		    if (m.getBody() != null) {
			if (m.getType() == Message.MSG_TYPE_ERROR) {
			    mText.append(getString(R.string.SendIMErrorMsg, m.getBody()));
			    mSpeak = 0;
			} else if (mSpeak == 2)
			    mText.append(getString(R.string.SendIMSameSpeaker, m.getBody()));
			else
			    mText.append(getString(R.string.SendIMSays, mContactName, m.getBody()));
			mScrolling.fullScroll(ScrollView.FOCUS_DOWN);
			mToSend.requestFocus();
			mSpeak = 2;
		    }
		}
	    });
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void stateChanged(IChat chat) throws RemoteException {
	    if (chat != mChat)
		return;
	    final String state = chat.getState();
	    Log.d("ChatState", "Action du correspondant : <--- " + chat.getState() + " --->");
	    mHandler.post(new Runnable() {

		@Override
		public void run() {
		    mChatState.setText(state);
		}
	    });
	}
    }

}
