package org.linphone;
/*
LinphoneActivity.java
Copyright (C) 2012  Belledonne Communications, Grenoble, France

This program 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 2
of the License, or (at your option) any later version.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
import static android.content.Intent.ACTION_MAIN;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;

import org.linphone.LinphoneManager.AddressType;
import org.linphone.LinphoneSimpleListener.LinphoneOnCallStateChangedListener;
import org.linphone.LinphoneSimpleListener.LinphoneOnMessageReceivedListener;
import org.linphone.LinphoneSimpleListener.LinphoneOnRegistrationStateChangedListener;
import org.linphone.compatibility.Compatibility;
import org.linphone.core.CallDirection;
import org.linphone.core.LinphoneAddress;
import org.linphone.core.LinphoneCall;
import org.linphone.core.LinphoneCall.State;
import org.linphone.core.LinphoneCallLog;
import org.linphone.core.LinphoneCallLog.CallStatus;
import org.linphone.core.LinphoneCore;
import org.linphone.core.LinphoneCore.RegistrationState;
import org.linphone.core.LinphoneCoreFactory;
import org.linphone.core.Log;
import org.linphone.mediastream.Version;
import org.linphone.setup.SetupActivity;
import org.linphone.ui.AddressText;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.Fragment.SavedState;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.KeyEvent;
import android.view.OrientationEventListener;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * @author Sylvain Berfini
 */
public class LinphoneActivity extends FragmentActivity implements OnClickListener, ContactPicked, 
										LinphoneOnCallStateChangedListener, 
										LinphoneOnMessageReceivedListener,
										LinphoneOnRegistrationStateChangedListener {
    public static final String PREF_FIRST_LAUNCH = "pref_first_launch";
	private static final int SETTINGS_ACTIVITY = 123;
    private static final int FIRST_LOGIN_ACTIVITY = 101;
	private static final int callActivity = 19;
	
	private static LinphoneActivity instance;
	
	private StatusFragment statusFragment;
	private TextView missedCalls, missedChats;
	private ImageView history, contacts, dialer, settings, chat;
	private FragmentsAvailable currentFragment;
	private Fragment dialerFragment, messageListenerFragment;
	private SavedState dialerSavedState;
	private ChatStorage chatStorage;
	private boolean preferLinphoneContacts = false;
	private Handler mHandler = new Handler();
	private List<Contact> contactList, sipContactList;
	private Cursor contactCursor, sipContactCursor;
	private OrientationEventListener mOrientationHelper;
	
	static final boolean isInstanciated() {
		return instance != null;
	}
	
	public static final LinphoneActivity instance() {
		if (instance != null) return instance;
		throw new RuntimeException("LinphoneActivity not instantiated yet");
	}
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
        
        if (!LinphoneManager.isInstanciated()) {
			Log.e("No service running: avoid crash by starting the launcher", this.getClass().getName());
			// super.onCreate called earlier
			finish();
			startActivity(getIntent().setClass(this, LinphoneLauncherActivity.class));
			return;
		}
        
        boolean useFirstLoginActivity = getResources().getBoolean(R.bool.useFirstLoginActivity);
        SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
        if (useFirstLoginActivity && !pref.getBoolean(getString(R.string.first_launch_suceeded_once_key), false)) {
			startActivityForResult(new Intent().setClass(this, SetupActivity.class), FIRST_LOGIN_ACTIVITY);
		}

        setContentView(R.layout.main);
        instance = this;		
        initButtons();
		
        currentFragment = FragmentsAvailable.DIALER;
        if (savedInstanceState == null) {
	        if (findViewById(R.id.fragmentContainer) != null) {
	        	dialerFragment = new DialerFragment();
	            dialerFragment.setArguments(getIntent().getExtras());
	            getSupportFragmentManager().beginTransaction()
	                    .add(R.id.fragmentContainer, dialerFragment).commit();
	        }
        }
        
        int missedCalls = LinphoneManager.getLc().getMissedCallsCount();
		displayMissedCalls(missedCalls);
		
		int rotation = Compatibility.getRotation(getWindowManager().getDefaultDisplay());
		// Inverse landscape rotation to initiate linphoneCore correctly
		if (rotation == 270)
			rotation = 90;
		else if (rotation == 90)
			rotation = 270;
		
		LinphoneManager.getLc().setDeviceRotation(rotation);
		mAlwaysChangingPhoneAngle = rotation;
	}
	
	private void initButtons() {
		history = (ImageView) findViewById(R.id.history);
        history.setOnClickListener(this);
        contacts  = (ImageView) findViewById(R.id.contacts);
        contacts.setOnClickListener(this);
        dialer = (ImageView) findViewById(R.id.dialer);
        dialer.setOnClickListener(this);
		dialer.setSelected(true);
        settings = (ImageView) findViewById(R.id.settings);
        settings.setOnClickListener(this);
        chat = (ImageView) findViewById(R.id.chat);
		chat.setOnClickListener(this);
		missedCalls = (TextView) findViewById(R.id.missedCalls);
		missedChats = (TextView) findViewById(R.id.missedChats);
	}
	
	private void changeCurrentFragment(FragmentsAvailable newFragmentType, Bundle extras) {
		changeCurrentFragment(newFragmentType, extras, false);
	}
	
	@SuppressWarnings("incomplete-switch")
	private void changeCurrentFragment(FragmentsAvailable newFragmentType, Bundle extras, boolean withoutAnimation) {		
		if (newFragmentType == currentFragment && newFragmentType != FragmentsAvailable.CHAT) {
			return;
		}
		
		if (currentFragment == FragmentsAvailable.DIALER) {
			dialerSavedState = getSupportFragmentManager().saveFragmentInstanceState(dialerFragment);
		}
		
		Fragment newFragment = null;
		
		switch (newFragmentType) {
		case HISTORY:
			newFragment = new HistoryFragment();
			break;
		case HISTORY_DETAIL:
			newFragment = new HistoryDetailFragment();
			break;
		case CONTACTS:
			newFragment = new ContactsFragment();
			break;
		case CONTACT:
			newFragment = new ContactFragment();
			break;
		case DIALER:
			newFragment = new DialerFragment();
			if (extras == null) {
				newFragment.setInitialSavedState(dialerSavedState);
			}
			dialerFragment = newFragment;
			break;
		case SETTINGS:
			break;
		case CHAT:
			newFragment = new ChatFragment();
			messageListenerFragment = newFragment;
			break;
		case CHATLIST:
			newFragment = new ChatListFragment();
			break;
		}
		
		if (newFragment != null) {
			newFragment.setArguments(extras);
			if (Version.isXLargeScreen(this)) {
				changeFragmentForTablets(newFragment, newFragmentType, withoutAnimation);
			} else {
				changeFragment(newFragment, newFragmentType, withoutAnimation);
			}
		}
	}
	
	private void changeFragment(Fragment newFragment, FragmentsAvailable newFragmentType, boolean withoutAnimation) {
		if (statusFragment != null) {
			statusFragment.closeStatusBar();
		}
		
		FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

		if (!withoutAnimation && !getResources().getBoolean(R.bool.disable_animations) && currentFragment.shouldAnimate()) {
			if (newFragmentType.isRightOf(currentFragment)) {
				transaction.setCustomAnimations(R.anim.slide_in_right_to_left, R.anim.slide_out_right_to_left, R.anim.slide_in_left_to_right, R.anim.slide_out_left_to_right);
			} else {
				transaction.setCustomAnimations(R.anim.slide_in_left_to_right, R.anim.slide_out_left_to_right, R.anim.slide_in_right_to_left, R.anim.slide_out_right_to_left);
			}
		}
		try {
			getSupportFragmentManager().popBackStackImmediate(newFragmentType.toString(), FragmentManager.POP_BACK_STACK_INCLUSIVE);
		} catch (java.lang.IllegalStateException e) {
			
		}
		
		transaction.addToBackStack(newFragmentType.toString());
		transaction.replace(R.id.fragmentContainer, newFragment);
		transaction.commitAllowingStateLoss();
		getSupportFragmentManager().executePendingTransactions();
		
		currentFragment = newFragmentType;
	}
	
	private void changeFragmentForTablets(Fragment newFragment, FragmentsAvailable newFragmentType, boolean withoutAnimation) {
		if (statusFragment != null) {
			statusFragment.closeStatusBar();
		}
		
		FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

		if (newFragmentType.shouldAddItselfToTheRightOf(currentFragment)) {
			LinearLayout ll = (LinearLayout) findViewById(R.id.fragmentContainer2);
			ll.setVisibility(View.VISIBLE);
			
			transaction.addToBackStack(newFragmentType.toString());
			transaction.replace(R.id.fragmentContainer2, newFragment);
		} else {
			if (!withoutAnimation && !getResources().getBoolean(R.bool.disable_animations) && currentFragment.shouldAnimate()) {
				if (newFragmentType.isRightOf(currentFragment)) {
					transaction.setCustomAnimations(R.anim.slide_in_right_to_left, R.anim.slide_out_right_to_left, R.anim.slide_in_left_to_right, R.anim.slide_out_left_to_right);
				} else {
					transaction.setCustomAnimations(R.anim.slide_in_left_to_right, R.anim.slide_out_left_to_right, R.anim.slide_in_right_to_left, R.anim.slide_out_right_to_left);
				}
			}
			
			LinearLayout ll = (LinearLayout) findViewById(R.id.fragmentContainer2);
			ll.setVisibility(View.GONE);
			
			try {
				getSupportFragmentManager().popBackStackImmediate(newFragmentType.toString(), FragmentManager.POP_BACK_STACK_INCLUSIVE);
			} catch (java.lang.IllegalStateException e) {
				
			}
			
			transaction.addToBackStack(newFragmentType.toString());
			transaction.replace(R.id.fragmentContainer, newFragment);
		}
		transaction.commitAllowingStateLoss();
		getSupportFragmentManager().executePendingTransactions();
		
		currentFragment = newFragmentType;
	}
	
	public void displayHistoryDetail(String sipUri, LinphoneCallLog log) {
		LinphoneAddress lAddress = LinphoneCoreFactory.instance().createLinphoneAddress(sipUri);
		Uri uri = LinphoneUtils.findUriPictureOfContactAndSetDisplayName(lAddress, getContentResolver());
		
		String displayName = lAddress.getDisplayName();
		String pictureUri = uri == null ? null : uri.toString();
		
		String status;
		if (log.getDirection() == CallDirection.Outgoing) {
			status = "Outgoing";
		} else {
			if (log.getStatus() == CallStatus.Missed) {
				status = "Missed";
			} else {
				status = "Incoming";
			}
		}
		
		String callTime = secondsToDisplayableString(log.getCallDuration());
		String callDate = log.getStartDate();
		
		Fragment fragment2 = getSupportFragmentManager().findFragmentById(R.id.fragmentContainer2);
		if (fragment2 != null && fragment2.isVisible() && currentFragment == FragmentsAvailable.HISTORY_DETAIL) {
			HistoryDetailFragment historyDetailFragment = (HistoryDetailFragment) fragment2;
			historyDetailFragment.changeDisplayedHistory(sipUri, displayName, pictureUri, status, callTime, callDate);
		} else {	
			Bundle extras = new Bundle();
			extras.putString("SipUri", sipUri);
			if (displayName != null) {
				extras.putString("DisplayName", displayName);
				extras.putString("PictureUri", pictureUri);
			}
			extras.putString("CallStatus", status);
			extras.putString("CallTime", callTime);
			extras.putString("CallDate", callDate);
			
			changeCurrentFragment(FragmentsAvailable.HISTORY_DETAIL, extras);
		}
	}
	
	private String secondsToDisplayableString(int secs) {
		SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
		Calendar cal = Calendar.getInstance();
		cal.set(0, 0, 0, 0, 0, secs);
		return dateFormat.format(cal.getTime());
	}
	
	public void displayContact(Contact contact) {
		Fragment fragment2 = getSupportFragmentManager().findFragmentById(R.id.fragmentContainer2);
		if (fragment2 != null && fragment2.isVisible() && currentFragment == FragmentsAvailable.CONTACT) {
			ContactFragment contactFragment = (ContactFragment) fragment2;
			contactFragment.changeDisplayedContact(contact);
		} else {		
			Bundle extras = new Bundle();
			extras.putSerializable("Contact", contact);
			changeCurrentFragment(FragmentsAvailable.CONTACT, extras);
		}
	}
	
	public void displayContacts() {
		changeCurrentFragment(FragmentsAvailable.CONTACTS, null);
	}
	
	public void displayContactsForEdition(String sipAddress) {
		Bundle extras = new Bundle();
		extras.putBoolean("EditOnClick", true);
		extras.putString("SipAddress", sipAddress);
		changeCurrentFragment(FragmentsAvailable.CONTACTS, extras);
	}
	
	public void displayChat(String sipUri) {
		LinphoneAddress lAddress = LinphoneCoreFactory.instance().createLinphoneAddress(sipUri);
		Uri uri = LinphoneUtils.findUriPictureOfContactAndSetDisplayName(lAddress, getContentResolver());
		String displayName = lAddress.getDisplayName();
		String pictureUri = uri == null ? null : uri.toString();
		
		if (currentFragment == FragmentsAvailable.CHATLIST || currentFragment == FragmentsAvailable.CHAT) {
			Fragment fragment2 = getSupportFragmentManager().findFragmentById(R.id.fragmentContainer2);
			if (fragment2 != null && fragment2.isVisible() && currentFragment == FragmentsAvailable.CHAT) {
				ChatFragment chatFragment = (ChatFragment) fragment2;
				chatFragment.changeDisplayedChat(sipUri, displayName, pictureUri);
			} else {
				Bundle extras = new Bundle();
				extras.putString("SipUri", sipUri);
				if (lAddress.getDisplayName() != null) {
					extras.putString("DisplayName", displayName);
					extras.putString("PictureUri", pictureUri);
				}
				changeCurrentFragment(FragmentsAvailable.CHAT, extras);
			}
		} else {
			changeCurrentFragment(FragmentsAvailable.CHATLIST, null);
			displayChat(sipUri);
		}
		LinphoneService.instance().resetMessageNotifCount();
		LinphoneService.instance().removeMessageNotification();
		displayMissedChats(getChatStorage().getUnreadMessageCount());
	}

	@Override
	public void onClick(View v) {
		int id = v.getId();
		resetSelection();
		
		if (id == R.id.history) {
			changeCurrentFragment(FragmentsAvailable.HISTORY, null);
			history.setSelected(true);
			LinphoneManager.getLc().resetMissedCallsCount();
			displayMissedCalls(0);
		}
		else if (id == R.id.contacts) {
			changeCurrentFragment(FragmentsAvailable.CONTACTS, null);
			contacts.setSelected(true);
		}
		else if (id == R.id.dialer) {
			changeCurrentFragment(FragmentsAvailable.DIALER, null);
			dialer.setSelected(true);
		}
		else if (id == R.id.settings) {
//			if (Version.sdkAboveOrEqual(Version.API11_HONEYCOMB_30)) {
//				changeCurrentFragment(FragmentsAvailable.SETTINGS, null);
//				settings.setSelected(true);
//			} else {
				Intent intent = new Intent(ACTION_MAIN);
				intent.setClass(this, PreferencesActivity.class);
				startActivityForResult(intent, SETTINGS_ACTIVITY);
				if (FragmentsAvailable.SETTINGS.isRightOf(currentFragment)) {
					Compatibility.overridePendingTransition(this, R.anim.slide_in_right_to_left, R.anim.slide_out_right_to_left);
				} else {
					Compatibility.overridePendingTransition(this, R.anim.slide_in_left_to_right, R.anim.slide_out_left_to_right);
				}
//			}
		}
		else if (id == R.id.chat) {
			changeCurrentFragment(FragmentsAvailable.CHATLIST, null);
			chat.setSelected(true);
		}
	}
	
	private void resetSelection() {
		history.setSelected(false);
		contacts.setSelected(false);
		dialer.setSelected(false);
		settings.setSelected(false);
		chat.setSelected(false);
	}
	
	@SuppressWarnings("incomplete-switch")
	public void selectMenu(FragmentsAvailable menuToSelect) {
		currentFragment = menuToSelect;
		resetSelection();
		
		switch (menuToSelect) {
		case HISTORY:
		case HISTORY_DETAIL:
			history.setSelected(true);
			break;
		case CONTACTS:
		case CONTACT:
			contacts.setSelected(true);
			break;
		case DIALER:
			dialer.setSelected(true);
			break;
		case SETTINGS:
			settings.setSelected(true);
			break;
		case CHAT:
		case CHATLIST:
			chat.setSelected(true);
			break;
		}
	}

	public void updateDialerFragment(DialerFragment fragment) {
		dialerFragment = fragment;
		// Hack to maintain ADJUST_PAN flag
		getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
	}
	
	public void updateChatFragment(ChatFragment fragment) {
		messageListenerFragment = fragment;
		// Hack to maintain ADJUST_PAN flag
		getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
	}
	
	public void updateStatusFragment(StatusFragment fragment) {
		statusFragment = fragment;
		
		if (LinphoneManager.getLc().getDefaultProxyConfig() != null) {
			statusFragment.registrationStateChanged(LinphoneManager.getLc().getDefaultProxyConfig().getState());
		}
	}
	
	public StatusFragment getStatusFragment() {
		return statusFragment;
	}

	public ArrayList<String> getChatList() {
		return getChatStorage().getChatList();
	}
	
	public List<ChatMessage> getChatMessages(String correspondent) {
		return getChatStorage().getMessages(correspondent);
	}
	
	public void removeFromChatList(String sipUri) {
		getChatStorage().removeDiscussion(sipUri);
	}
	
	@Override
	public void onMessageReceived(LinphoneAddress from, String message) {
		int id = getChatStorage().saveMessage(from.asStringUriOnly(), "", message);
		
		ChatFragment chatFragment = ((ChatFragment) messageListenerFragment);
		if (messageListenerFragment != null && messageListenerFragment.isVisible() && chatFragment.getSipUri().equals(from.asStringUriOnly())) {
			chatFragment.onMessageReceived(from, message);
			getChatStorage().markMessageAsRead(id);
		} else if (LinphoneService.isReady()) {
			displayMissedChats(getChatStorage().getUnreadMessageCount());
		}
		LinphoneUtils.findUriPictureOfContactAndSetDisplayName(from, getContentResolver());
		LinphoneService.instance().displayMessageNotification(from.asStringUriOnly(), from.getDisplayName(), message);
	}
	
	public void updateMissedChatCount() {
		displayMissedChats(getChatStorage().getUnreadMessageCount());
	}
	
	public void onMessageSent(String to, String message) {
		getChatStorage().saveMessage("", to, message);
	}

	@Override
	public void onRegistrationStateChanged(RegistrationState state) {
		if (statusFragment != null) {
			statusFragment.registrationStateChanged(state);
		}
	}
	
	private void displayMissedCalls(final int missedCallsCount) {
		mHandler.post(new Runnable() {
			@Override
			public void run() {
				if (missedCallsCount > 0) {
					missedCalls.setText(missedCallsCount + "");
					missedCalls.setVisibility(View.VISIBLE);
					if (!getResources().getBoolean(R.bool.disable_animations)) {
						missedCalls.startAnimation(AnimationUtils.loadAnimation(LinphoneActivity.this, R.anim.bounce));
					}
				} else {
					missedCalls.clearAnimation();
					missedCalls.setVisibility(View.GONE);
				}
			}
		});
	}
	
	private void displayMissedChats(final int missedChatCount) {
		mHandler.post(new Runnable() {
			@Override
			public void run() {
				if (missedChatCount > 0) {
					missedChats.setText(missedChatCount + "");
					if (missedChatCount > 99) {
						missedChats.setTextSize(12);
					} else {
						missedChats.setTextSize(20);
					}
					missedChats.setVisibility(View.VISIBLE);
					if (!getResources().getBoolean(R.bool.disable_animations)) {
						missedChats.startAnimation(AnimationUtils.loadAnimation(LinphoneActivity.this, R.anim.bounce));
					}
				} else {
					missedChats.clearAnimation();
					missedChats.setVisibility(View.GONE);
				}
			}
		});
	}

	@Override
	public void onCallStateChanged(LinphoneCall call, State state, String message) {
		if (state == State.IncomingReceived) {
			startActivity(new Intent(this, IncomingCallActivity.class));
		} else if (state == State.OutgoingInit) {
			if (call.getCurrentParamsCopy().getVideoEnabled()) {
				startVideoActivity(call);
			} else {
				startIncallActivity(call);
			}
		} else if (state == State.CallEnd || state == State.Error || state == State.CallReleased) {
			resetClassicMenuLayoutAndGoBackToCallIfStillRunning();
		}
		
		int missedCalls = LinphoneManager.getLc().getMissedCallsCount();
		displayMissedCalls(missedCalls);
	}

	@Override
	public void setAddresGoToDialerAndCall(String number, String name, Uri photo) {
		Bundle extras = new Bundle();
		extras.putString("SipUri", number);
		extras.putString("DisplayName", name);
		extras.putString("Photo", photo == null ? null : photo.toString());
		changeCurrentFragment(FragmentsAvailable.DIALER, extras);
		
		AddressType address = new AddressText(this, null);
		address.setDisplayedName(name);
		address.setText(number);
		if (LinphoneManager.getLc().getCallsNb() == 0) {
			LinphoneManager.getInstance().newOutgoingCall(address);
		}
	}
	
	public void setAddressAndGoToDialer(String number) {
		Bundle extras = new Bundle();
		extras.putString("SipUri", number);
		changeCurrentFragment(FragmentsAvailable.DIALER, extras);
	}

	@Override
	public void goToDialer() {
		changeCurrentFragment(FragmentsAvailable.DIALER, null);
	}

	public void onRegistrationStateChanged(RegistrationState state, String message) {
		if (statusFragment != null) {
			statusFragment.registrationStateChanged(state);
		}
	}

	public void startVideoActivity(LinphoneCall currentCall) {
		Intent intent = new Intent(this, InCallActivity.class);
		intent.putExtra("VideoEnabled", true);
		startOrientationSensor();
		startActivityForResult(intent, callActivity);
	}
	
	public void startIncallActivity(LinphoneCall currentCall) {
		Intent intent = new Intent(this, InCallActivity.class);
		intent.putExtra("VideoEnabled", false);
		startOrientationSensor();
		startActivityForResult(intent, callActivity);
	}
	
	/**
	 * Register a sensor to track phoneOrientation changes
	 */
	private synchronized void startOrientationSensor() {
		if (mOrientationHelper == null) {
			mOrientationHelper = new LocalOrientationEventListener(this);
		}
		mOrientationHelper.enable();
	}
	
	private int mAlwaysChangingPhoneAngle = -1;
	private class LocalOrientationEventListener extends OrientationEventListener {
		public LocalOrientationEventListener(Context context) {
			super(context);
		}
		@Override
		public void onOrientationChanged(final int o) {
			if (o == OrientationEventListener.ORIENTATION_UNKNOWN) {
				return;
			}

			int degrees = 270;
			if (o < 45 || o >315) degrees = 0;
			else if (o < 135) degrees = 90;
			else if (o < 225) degrees = 180;

			if (mAlwaysChangingPhoneAngle == degrees) {
				return;
			}
			mAlwaysChangingPhoneAngle = degrees;

			Log.d("Phone orientation changed to ", degrees);
			int rotation = (360 - degrees) % 360;
			LinphoneCore lc = LinphoneManager.getLcIfManagerNotDestroyedOrNull();
			if (lc != null){
				lc.setDeviceRotation(rotation);
				LinphoneCall currentCall = lc.getCurrentCall();
				if (currentCall != null && currentCall.cameraEnabled() && currentCall.getCurrentParamsCopy().getVideoEnabled()) {
					lc.updateCall(currentCall, null);
				}
			}
		}
	}

	public void showPreferenceErrorDialog(String message) {
		
	}
	
	public List<Contact> getAllContacts() {
		return contactList;
	}
	
	public List<Contact> getSIPContacts() {
		return sipContactList;
	}

	public Cursor getAllContactsCursor() {
		return contactCursor;
	}
	
	public Cursor getSIPContactsCursor() {
		return sipContactCursor;
	}
	
	public void setLinphoneContactsPrefered(boolean isPrefered) {
		preferLinphoneContacts = isPrefered;
	}
	
	public boolean isLinphoneContactsPrefered() {
		return preferLinphoneContacts;
	}
	
	private void prepareContactsInBackground() {
		contactCursor = Compatibility.getContactsCursor(getContentResolver());
		sipContactCursor = Compatibility.getSIPContactsCursor(getContentResolver());
		contactList = new ArrayList<Contact>();
		sipContactList = new ArrayList<Contact>();
		Thread sipContactsHandler = new Thread(new Runnable() {
			@Override
			public void run() {
				
				for (int i = 0; i < sipContactCursor.getCount(); i++) {
					Contact contact = Compatibility.getContact(getContentResolver(), sipContactCursor, i);
					sipContactList.add(contact);
				}
			}
		});
		sipContactsHandler.start();
		
		Thread contactsHandler = new Thread(new Runnable() {
			@Override
			public void run() {
				
				for (int i = 0; i < contactCursor.getCount(); i++) {
					Contact contact = Compatibility.getContact(getContentResolver(), contactCursor, i);
					contactList.add(contact);
				}
			}
		});
		contactsHandler.start();
	}
	
	private void initInCallMenuLayout(boolean callTransfer) {
		selectMenu(FragmentsAvailable.DIALER);
		if (dialerFragment != null) {
			((DialerFragment) dialerFragment).resetLayout(callTransfer);
		}
	}
	
	public void resetClassicMenuLayoutAndGoBackToCallIfStillRunning() {
		mHandler.post(new Runnable() {
			@Override
			public void run() {
				if (dialerFragment != null) {
					((DialerFragment) dialerFragment).resetLayout(false);
				}
				
				if (LinphoneManager.getLc().getCallsNb() > 0) {
					LinphoneCall call = LinphoneManager.getLc().getCalls()[0];
					if (call.getCurrentParamsCopy().getVideoEnabled()) {
						startVideoActivity(call);
					} else {
						startIncallActivity(call);
					}
				}
			}
		});
	}
	
	public FragmentsAvailable getCurrentFragment() {
		return currentFragment;
	}
	
	public ChatStorage getChatStorage() {
		if (chatStorage == null) {
			chatStorage = new ChatStorage(this);
		}
		return chatStorage;
	}
	
	public void exit() {
		finish();
		stopService(new Intent(ACTION_MAIN).setClass(this, LinphoneService.class));
	}
	
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(resultCode, requestCode, data);
		if (resultCode == Activity.RESULT_FIRST_USER && requestCode == SETTINGS_ACTIVITY) {
			if (data.getExtras().getBoolean("Exit", false)) {
				exit();
			} else {
				FragmentsAvailable newFragment = (FragmentsAvailable) data.getExtras().getSerializable("FragmentToDisplay");
				changeCurrentFragment(newFragment, null, true);
				selectMenu(newFragment);
			}
		}
		else if (requestCode == callActivity) {
			boolean callTransfer = data == null ? false : data.getBooleanExtra("Transfer", false);
			if (LinphoneManager.getLc().getCallsNb() > 0) {
				initInCallMenuLayout(callTransfer); 
			} else {
				resetClassicMenuLayoutAndGoBackToCallIfStillRunning();
			}
		}
	}
	
	@Override
	protected void onResume() {		
		super.onResume();
        
        LinphoneManager.addListener(this);
        
        prepareContactsInBackground();
		
		if (chatStorage != null) {
			chatStorage.close();
		}
		chatStorage = new ChatStorage(this);
		
		updateMissedChatCount();
		displayMissedCalls(LinphoneManager.getLc().getMissedCallsCount());
		
		if (LinphoneManager.getLc().getCalls().length > 0) {
			LinphoneCall call = LinphoneManager.getLc().getCalls()[0];
			LinphoneCall.State callState = call.getState();
			if (callState == State.IncomingReceived) {
				startActivity(new Intent(this, IncomingCallActivity.class));
			}
		}
	}
	
	@Override
	protected void onDestroy() {
		LinphoneManager.removeListener(this);
		
		if (chatStorage != null) {
			chatStorage.close();
			chatStorage = null;
		}
		
		if (mOrientationHelper != null) {
			mOrientationHelper.disable();
			mOrientationHelper = null;
		}
		
		instance = null;
		super.onDestroy();
		
		unbindDrawables(findViewById(R.id.topLayout));
	    System.gc();
	}
	
	private void unbindDrawables(View view) {
        if (view != null && view.getBackground() != null) {
        	view.getBackground().setCallback(null);
        }
        if (view instanceof ViewGroup && !(view instanceof AdapterView)) {
            for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
            	unbindDrawables(((ViewGroup) view).getChildAt(i));
            }
            ((ViewGroup) view).removeAllViews();
        }
	}
	
	@Override
	protected void onNewIntent(Intent intent) {
		super.onNewIntent(intent);
		
		Bundle extras = intent.getExtras();
		if (extras != null && extras.getBoolean("GoToChat", false)) {
			LinphoneService.instance().removeMessageNotification();
			String sipUri = extras.getString("ChatContactSipUri");
			displayChat(sipUri);
		} else if (extras != null && extras.getBoolean("Notification", false)) {
			if (LinphoneManager.getLc().getCallsNb() > 0) {
				LinphoneCall call = LinphoneManager.getLc().getCalls()[0];
				if (call.getCurrentParamsCopy().getVideoEnabled()) {
					startVideoActivity(call);
				} else {
					startIncallActivity(call);
				}
			}
		}
	}
	
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if (keyCode == KeyEvent.KEYCODE_BACK && currentFragment == FragmentsAvailable.DIALER) {
			if (LinphoneUtils.onKeyBackGoHome(this, keyCode, event)) {
				return true;
			}
		}
		if (keyCode == KeyEvent.KEYCODE_MENU && statusFragment != null) {
			statusFragment.openOrCloseStatusBar();
		}
		return super.onKeyDown(keyCode, event);
	}
}

interface ContactPicked {
	void setAddresGoToDialerAndCall(String number, String name, Uri photo);
	void goToDialer();
}