/*

    BEEM is a videoconference application on the Android Platform.

    Copyright (C) 2009 by Frederic-Charles Barthelery,

                          Jean-Manuel Da Silva,

                          Nikita Kozlov,

                          Philippe Lago,

                          Jean Baptiste Vergely,

                          Vincent Veronis.

    This file is part of BEEM.

    BEEM is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation, either version 3 of the License, or

    (at your option) any later version.

    BEEM is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with BEEM.  If not, see <http://www.gnu.org/licenses/>.

    Please send bug reports with examples or suggestions to

    contact@beem-project.com or http://dev.beem-project.com/

    Epitech, hereby disclaims all copyright interest in the program "Beem"

    written by Frederic-Charles Barthelery,

               Jean-Manuel Da Silva,

               Nikita Kozlov,

               Philippe Lago,

               Jean Baptiste Vergely,

               Vincent Veronis.

    Nicolas Sadirac, November 26, 2009

    President of Epitech.

    Flavien Astraud, November 26, 2009

    Head of the EIP Laboratory.

 */

package com.beem.project.beem;

import java.util.HashMap;

import java.util.Map;

import org.jivesoftware.smack.Roster;

import org.jivesoftware.smack.Roster.SubscriptionMode;

import org.jivesoftware.smack.XMPPConnection;

import org.jivesoftware.smack.provider.ProviderManager;

import org.jivesoftware.smackx.packet.ChatStateExtension;

import org.jivesoftware.smackx.provider.DelayInfoProvider;

import org.jivesoftware.smackx.provider.DiscoverInfoProvider;

import org.jivesoftware.smackx.provider.DiscoverItemsProvider;

import org.jivesoftware.smackx.pubsub.provider.EventProvider;

import org.jivesoftware.smackx.pubsub.provider.ItemProvider;

import org.jivesoftware.smackx.pubsub.provider.ItemsProvider;

import org.jivesoftware.smackx.pubsub.provider.PubSubProvider;

import android.app.Notification;

import android.app.Service;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import android.net.ConnectivityManager;

import android.os.Bundle;

import android.os.Handler;

import android.os.HandlerThread;

import android.os.IBinder;

import android.os.Looper;

import android.os.Message;

import android.os.RemoteException;

import android.util.Log;

import com.beem.project.beem.service.XmppConnectionAdapter;

import com.beem.project.beem.smack.avatar.AvatarMetadataProvider;

import com.beem.project.beem.smack.avatar.AvatarProvider;

import com.beem.project.beem.smack.caps.CapsProvider;

import com.beem.project.beem.ui.BeemNotification;

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

import com.beem.project.beem.utils.BeemConnectivity;

import com.beem.project.beem.utils.Status;

/**

 * This class is for the Beem service. It must contains every global informations needed to maintain the background

 * service. The connection to the xmpp server will be made asynchronously when the service will start.

 * @author darisk

 */

public class BeemService extends Service {

    /** The id to use for status notification. */

    public static final int NOTIFICATION_STATUS_ID = 100;

    private static final String TAG = "BeemService";

    private static final int MESSAGE_CONNECT = 0x1;

    private static final int MESSAGE_DISCONNECT = 0x2;

    private static final int MESSAGE_SEND_MSG = 0x3;

    private static final int MESSAGE_SYNC = 0x4;

    private Map<String, XmppConnectionAdapter> mConnection = new HashMap<String, XmppConnectionAdapter>();

    private Map<String, BeemConnection> mBeemConnection = new HashMap<String, BeemConnection>();

    private boolean mOnOffReceiverIsRegistered;

    private Handler mHandler;

    private Looper mServiceLooper;

    private BeemBroadcastReceiver mReceiver = new BeemBroadcastReceiver();

    private BeemServicePreferenceListener mPreferenceListener = new BeemServicePreferenceListener();

    private BeemServiceBroadcastReceiver mOnOffReceiver = new BeemServiceBroadcastReceiver();

    /**

     * Constructor.

     */

    public BeemService() {

    }

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

	if (intent != null) {

	    handleIntent(intent);

	}

	return Service.START_STICKY;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public IBinder onBind(Intent intent) {

	return null;

    }

    @Override

    public boolean onUnbind(Intent intent) {

	Log.d(TAG, "ONUNBIND()");

	boolean isConnected = true;

	for (XmppConnectionAdapter connection : mConnection.values()) {

	    if (!connection.getAdaptee().isConnected())

		isConnected = false;

	}

	if (!isConnected) {

	    this.stopSelf();

	}

	return true;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void onCreate() {

	super.onCreate();

	Log.d(TAG, "ONCREATE");

	HandlerThread thread = new HandlerThread("BeemServiceThread");

	thread.start();

	mServiceLooper = thread.getLooper();

	mHandler = new BeemServiceHandler(mServiceLooper);

	registerReceiver(mReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));

	configure(ProviderManager.getInstance());

	BeemNotification.BindNotification(this);

	Roster.setDefaultSubscriptionMode(SubscriptionMode.manual);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void onDestroy() {

	super.onDestroy();

	unregisterReceiver(mReceiver);

	if (mOnOffReceiverIsRegistered)

	    unregisterReceiver(mOnOffReceiver);

	for (XmppConnectionAdapter connection : mConnection.values()) {

	    if (connection.isAuthentificated() && BeemConnectivity.isConnected(this))

		connection.disconnect();

	}

	Log.d(TAG, "ONDESTROY");

    }

    public XmppConnectionAdapter getConnection(String accountName) {

	return mConnection.get(accountName);

    }

    /**

     * Show a notification using the preference of the user.

     * @param id the id of the notification.

     * @param notif the notification to show

     */

    public void sendNotification(int id, Notification notif) {

	//	if (mSettings.getBoolean(BeemApplication.NOTIFICATION_VIBRATE_KEY, true))

	//	    notif.defaults |= Notification.DEFAULT_VIBRATE;

	//	notif.defaults |= Notification.DEFAULT_LIGHTS;

	//	String ringtoneStr = mSettings.getString(BeemApplication.NOTIFICATION_SOUND_KEY, "");

	//	notif.sound = Uri.parse(ringtoneStr);

	//	mNotificationManager.notify(id, notif);

    }

    /**

     * Reset the status to online after a disconnect.

     */

    public void resetStatus() {

	for (BeemConnection beemco : mBeemConnection.values()) {

	    Editor edit = beemco.getSettings().edit();

	    edit.putInt(BeemApplication.STATUS_KEY, 1);

	    edit.commit();

	}

    }

    /**

     * Initialize Jingle from an XmppConnectionAdapter.

     * @param adaptee XmppConnection used for jingle.

     */

    public void initJingle(XMPPConnection adaptee) {

    }

    /**

     * Get the preference of the service.

     * @return the preference

     */

    public SharedPreferences getServicePreference(String accountName) {

	Log.e(TAG, "Account name:" + accountName);

	return mBeemConnection.get(accountName).getSettings();

    }

    /**

     * A sort of patch from this thread: http://www.igniterealtime.org/community/thread/31118. Avoid ClassCastException

     * by bypassing the classloading shit of Smack.

     * @param pm The ProviderManager.

     */

    private void configure(ProviderManager pm) {

	Log.d(TAG, "configure");

	// Service Discovery # Items

	pm.addIQProvider("query", "http://jabber.org/protocol/disco#items", new DiscoverItemsProvider());

	// Service Discovery # Info

	pm.addIQProvider("query", "http://jabber.org/protocol/disco#info", new DiscoverInfoProvider());

	// Privacy

	//pm.addIQProvider("query", "jabber:iq:privacy", new PrivacyProvider());

	// Delayed Delivery only the new version

	pm.addExtensionProvider("delay", "urn:xmpp:delay", new DelayInfoProvider());

	// Service Discovery # Items

	pm.addIQProvider("query", "http://jabber.org/protocol/disco#items", new DiscoverItemsProvider());

	// Service Discovery # Info

	pm.addIQProvider("query", "http://jabber.org/protocol/disco#info", new DiscoverInfoProvider());

	// Chat State

	ChatStateExtension.Provider chatState = new ChatStateExtension.Provider();

	pm.addExtensionProvider("active", "http://jabber.org/protocol/chatstates", chatState);

	pm.addExtensionProvider("composing", "http://jabber.org/protocol/chatstates", chatState);

	pm.addExtensionProvider("paused", "http://jabber.org/protocol/chatstates", chatState);

	pm.addExtensionProvider("inactive", "http://jabber.org/protocol/chatstates", chatState);

	pm.addExtensionProvider("gone", "http://jabber.org/protocol/chatstates", chatState);

	// capabilities

	pm.addExtensionProvider("c", "http://jabber.org/protocol/caps", new CapsProvider());

	//Pubsub

	pm.addIQProvider("pubsub", "http://jabber.org/protocol/pubsub", new PubSubProvider());

	pm.addExtensionProvider("items", "http://jabber.org/protocol/pubsub", new ItemsProvider());

	pm.addExtensionProvider("items", "http://jabber.org/protocol/pubsub", new ItemsProvider());

	pm.addExtensionProvider("item", "http://jabber.org/protocol/pubsub", new ItemProvider());

	pm.addExtensionProvider("items", "http://jabber.org/protocol/pubsub#event", new ItemsProvider());

	pm.addExtensionProvider("item", "http://jabber.org/protocol/pubsub#event", new ItemProvider());

	pm.addExtensionProvider("event", "http://jabber.org/protocol/pubsub#event", new EventProvider());

	//TODO rajouter les manquants pour du full pubsub

	//PEP avatar

	pm.addExtensionProvider("metadata", "urn:xmpp:avatar:metadata", new AvatarMetadataProvider());

	pm.addExtensionProvider("data", "urn:xmpp:avatar:data", new AvatarProvider());

	//         PEPProvider pep  = new PEPProvider();

	//         AvatarMetadataProvider avaMeta  = new AvatarMetadataProvider();

	//         pep.registerPEPParserExtension("urn:xmpp:avatar:metadata", avaMeta);

	//         pm.addExtensionProvider("event", "http://jabber.org/protocol/pubsub#event", pep);

	/*

	 * // Private Data Storage pm.addIQProvider("query", "jabber:iq:private", new

	 * PrivateDataManager.PrivateDataIQProvider()); // Time try { pm.addIQProvider("query", "jabber:iq:time",

	 * Class.forName("org.jivesoftware.smackx.packet.Time")); } catch (ClassNotFoundException e) {

	 * Log.w("TestClient", "Can't load class for org.jivesoftware.smackx.packet.Time"); } // Roster Exchange

	 * pm.addExtensionProvider("x", "jabber:x:roster", new RosterExchangeProvider()); // Message Events

	 * pm.addExtensionProvider("x", "jabber:x:event", new MessageEventProvider()); // XHTML

	 * pm.addExtensionProvider("html", "http://jabber.org/protocol/xhtml-im", new XHTMLExtensionProvider()); //

	 * Group Chat Invitations pm.addExtensionProvider("x", "jabber:x:conference", new

	 * GroupChatInvitation.Provider()); // Data Forms pm.addExtensionProvider("x", "jabber:x:data", new

	 * DataFormProvider()); // MUC User pm.addExtensionProvider("x", "http://jabber.org/protocol/muc#user", new

	 * MUCUserProvider()); // MUC Admin pm.addIQProvider("query", "http://jabber.org/protocol/muc#admin", new

	 * MUCAdminProvider()); // MUC Owner pm.addIQProvider("query", "http://jabber.org/protocol/muc#owner", new

	 * MUCOwnerProvider()); // Version try { pm.addIQProvider("query", "jabber:iq:version",

	 * Class.forName("org.jivesoftware.smackx.packet.Version")); } catch (ClassNotFoundException e) { // Not sure

	 * what's happening here. Log.w("TestClient", "Can't load class for org.jivesoftware.smackx.packet.Version"); }

	 * // VCard pm.addIQProvider("vCard", "vcard-temp", new VCardProvider()); // Offline Message Requests

	 * pm.addIQProvider("offline", "http://jabber.org/protocol/offline", new OfflineMessageRequest.Provider()); //

	 * Offline Message Indicator pm.addExtensionProvider("offline", "http://jabber.org/protocol/offline", new

	 * OfflineMessageInfo.Provider()); // Last Activity pm.addIQProvider("query", "jabber:iq:last", new

	 * LastActivity.Provider()); // User Search pm.addIQProvider("query", "jabber:iq:search", new

	 * UserSearch.Provider()); // SharedGroupsInfo pm.addIQProvider("sharedgroup",

	 * "http://www.jivesoftware.org/protocol/sharedgroup", new SharedGroupsInfo.Provider()); // JEP-33: Extended

	 * Stanza Addressing pm.addExtensionProvider("addresses", "http://jabber.org/protocol/address", new

	 * MultipleAddressesProvider()); // FileTransfer pm.addIQProvider("si", "http://jabber.org/protocol/si", new

	 * StreamInitiationProvider()); pm.addIQProvider("query", "http://jabber.org/protocol/bytestreams", new

	 * BytestreamsProvider()); pm.addIQProvider("open", "http://jabber.org/protocol/ibb", new IBBProviders.Open());

	 * pm.addIQProvider("close", "http://jabber.org/protocol/ibb", new IBBProviders.Close());

	 * pm.addExtensionProvider("data", "http://jabber.org/protocol/ibb", new IBBProviders.Data());

	 * pm.addIQProvider("command", COMMAND_NAMESPACE, new AdHocCommandDataProvider());

	 * pm.addExtensionProvider("malformed-action", COMMAND_NAMESPACE, new

	 * AdHocCommandDataProvider.MalformedActionError()); pm.addExtensionProvider("bad-locale", COMMAND_NAMESPACE,

	 * new AdHocCommandDataProvider.BadLocaleError()); pm.addExtensionProvider("bad-payload", COMMAND_NAMESPACE, new

	 * AdHocCommandDataProvider.BadPayloadError()); pm.addExtensionProvider("bad-sessionid", COMMAND_NAMESPACE, new

	 * AdHocCommandDataProvider.BadSessionIDError()); pm.addExtensionProvider("session-expired", COMMAND_NAMESPACE,

	 * new AdHocCommandDataProvider.SessionExpiredError());

	 */

    }

    /**

     * Listen on preference changes.

     */

    public class BeemServicePreferenceListener implements SharedPreferences.OnSharedPreferenceChangeListener {

	/**

	 * ctor.

	 */

	public BeemServicePreferenceListener() {

	}

	@Override

	public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {

	    if ("settings_away_chk".equals(key)) {

		if (sharedPreferences.getBoolean("settings_away_chk", false)) {

		    mOnOffReceiverIsRegistered = true;

		    registerReceiver(mOnOffReceiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));

		    registerReceiver(mOnOffReceiver, new IntentFilter(Intent.ACTION_SCREEN_ON));

		} else {

		    mOnOffReceiverIsRegistered = false;

		    unregisterReceiver(mOnOffReceiver);

		}

	    } else if (BeemApplication.STATUS_TEXT_KEY.equals(key)) {

		BeemNotification.BindNotification(BeemService.this);

	    }

	}

    }

    /**

     * Listen on some Intent broadcast, ScreenOn and ScreenOff.

     */

    private class BeemServiceBroadcastReceiver extends BroadcastReceiver {

	private String mOldStatus;

	private int mOldMode;

	/**

	 * Constructor.

	 */

	public BeemServiceBroadcastReceiver() {

	}

	@Override

	public void onReceive(final Context context, final Intent intent) {

	    String intentAction = intent.getAction();

	    if (intentAction.equals(Intent.ACTION_SCREEN_OFF)) {

		for (Map.Entry<String, XmppConnectionAdapter> item : mConnection.entrySet()) {

		    XmppConnectionAdapter connection = item.getValue();

		    mOldMode = connection.getPreviousMode();

		    mOldStatus = connection.getPreviousStatus();

		    if (connection.isAuthentificated())

			connection.changeStatus(Status.CONTACT_STATUS_AWAY, mBeemConnection.get(item.getKey())

			    .getSettings().getString("settings_away_message", "Away"));

		}

	    } else if (intentAction.equals(Intent.ACTION_SCREEN_ON)) {

		for (XmppConnectionAdapter connection : mConnection.values()) {

		    if (connection.isAuthentificated())

			connection.changeStatus(mOldMode, mOldStatus);

		}

	    }

	}

    }

    private void handleIntent(Intent intent) {

	Message msg = null;

	String action = intent.getAction();

	if (BeemIntent.ACTION_CONNECT.equals(action)) {

	    msg = mHandler.obtainMessage(MESSAGE_CONNECT, intent.getExtras());

	} else if (BeemIntent.ACTION_DISCONNECT.equals(action)) {

	    msg = mHandler.obtainMessage(MESSAGE_DISCONNECT, intent.getExtras());

	} else if (BeemIntent.ACTION_SEND_MESSAGE.equals(action)) {

	    msg = mHandler.obtainMessage(MESSAGE_SEND_MSG, intent.getExtras());

	} else if (BeemIntent.ACTION_SYNC.equals(action)) {

	    msg = mHandler.obtainMessage(MESSAGE_SYNC, intent.getExtras());

	} else {

	    Log.w(TAG, "Unknown intent " + intent);

	}

	if (msg != null)

	    mHandler.sendMessage(msg);

    }

    private class BeemServiceHandler extends Handler {

	public BeemServiceHandler(Looper looper) {

	    super(looper);

	}

	@Override

	public void handleMessage(Message msg) {

	    Bundle b = (Bundle) msg.obj;

	    switch (msg.what) {

		case MESSAGE_CONNECT:

		    handleConnect(b.getString(BeemIntent.EXTRA_ACCOUNT));

		    break;

		case MESSAGE_DISCONNECT:

		    handleDisconnect(b);

		    break;

		case MESSAGE_SEND_MSG:

		    String account = b.getString(BeemIntent.EXTRA_ACCOUNT);

		    XmppConnectionAdapter con = mConnection.get(account);

		    if (con != null) {

			con.handleMessage(msg);

		    }

		    break;

		case MESSAGE_SYNC:

		    BeemNotification.StartSyncNotification(getBaseContext());

		    String accountName = b.getString(BeemIntent.EXTRA_ACCOUNT);

		    //TODO: Connect with option to not show status

		    handleConnect(accountName);

		    XmppConnectionAdapter co = mConnection.get(accountName);

		    if (co != null) {

			BeemSync sync = new BeemSync(getBaseContext());

			if (co.getAdaptee() != null)

			    sync.manageRoster(co.getAdaptee().getRoster(), accountName);

		    }

		    BeemNotification.StopSyncNotification(getBaseContext());

		    break;

		default:

		    Log.w(TAG, "Unknown message " + msg);

	    }

	}

    }

    private void handleConnect(String accountName) {

	Intent res = new Intent(BeemIntent.ACTION_DISCONNECTED);

	res.putExtra(BeemIntent.EXTRA_MESSAGE, R.string.contact_status_msg_offline);

	res.putExtra(BeemIntent.EXTRA_ACCOUNT, accountName);

	if (mConnection.containsKey(accountName)) {

	    res.setAction(BeemIntent.ACTION_CONNECTED);

	} else {

	    if (accountName == null) {

		//connect all

	    } else {

		BeemConnection beemco = new BeemConnection(BeemService.this.getSharedPreferences(accountName,

		    MODE_PRIVATE), mPreferenceListener);

		if (beemco.getSettings().getBoolean("settings_away_chk", false)) {

		    mOnOffReceiverIsRegistered = true;

		    registerReceiver(mOnOffReceiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));

		    registerReceiver(mOnOffReceiver, new IntentFilter(Intent.ACTION_SCREEN_ON));

		}

		mBeemConnection.put(accountName, beemco);

		XmppConnectionAdapter beemcoAdapter = new XmppConnectionAdapter(beemco.getConnectionConfiguration(),

		    beemco.getJid(), beemco.getPassword(), this);

		try {

		    Log.i(TAG, "Starting connection of " + accountName);

		    if (beemcoAdapter.connectSync()) {

			mConnection.put(accountName, beemcoAdapter);

			res.setAction(BeemIntent.ACTION_CONNECTED);

			Log.e(TAG, "Account configuration : " + accountName + " DONE");

		    } else {

			Log.w(TAG, "Unable to connect " + accountName);

			res.putExtra(BeemIntent.EXTRA_MESSAGE, beemcoAdapter.getErrorMessage());

		    }

		} catch (RemoteException e) {

		    res.putExtra(BeemIntent.EXTRA_MESSAGE, beemcoAdapter.getErrorMessage());

		    Log.e(TAG, "Unable to connect " + accountName, e);

		}

	    }

	}

	sendBroadcast(res);

    }