package de.tudarmstadt.informatik.hostage.ui;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningServiceInfo;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.net.ConnectivityManager;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
import android.widget.ViewAnimator;
import de.tudarmstadt.informatik.hostage.HoneyService;
import de.tudarmstadt.informatik.hostage.HoneyService.LocalBinder;
import de.tudarmstadt.informatik.hostage.R;
import de.tudarmstadt.informatik.hostage.commons.HelperUtils;
import de.tudarmstadt.informatik.hostage.logging.DatabaseHandler;

public class MainActivity extends Activity {

	public static final String BROADCAST = "de.tudarmstadt.informatik.hostage.BROADCAST";
	public static final String PREF_NAME = "de.tudarmstadt.informatik.hostage.SESSION_DATA";
	public static final String LISTENER = "_LISTENER";
	public static final String HANDLER_COUNT = "_HANDLER_COUNT";

	public static final int LIGHT_GREY = 0x01;
	public static final int LIGHT_GREEN = 0x02;
	public static final int LIGHT_RED = 0x03;
	public static final int LIGHT_YELLOW = 0x04;

	private HoneyService mService;
	private SharedPreferences pref;
	private Editor editor;
	private DatabaseHandler dbh;

	private ViewAnimator viewAnimator;
	private GestureDetector gestureDetector;

	private Animation animFlipInLR;
	private Animation animFlipOutLR;
	private Animation animFlipInRL;
	private Animation animFlipOutRL;

	private ListView listView;
	private ListViewAdapter adapter;
	
	private String protocolClicked;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		initViewAnimator();
		initListView();
		pref = getSharedPreferences(MainActivity.PREF_NAME, Context.MODE_PRIVATE);
		dbh = new DatabaseHandler(getApplicationContext());
		editor = pref.edit();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	    // Handle item selection
	    switch (item.getItemId()) {
	        case R.id.action_settings:
	            startActivity(new Intent(this, SettingsActivity.class));
	        default:
	            return super.onOptionsItemSelected(item);
	    }
	}

	@Override
	protected void onStart() {
		super.onStart();
		registerReceiver();
		registerNetReceiver();
		if (isServiceRunning()) {
			bindService(getServiceIntent(), mConnection, BIND_AUTO_CREATE);
		}
	}

	@Override
	protected void onStop() {
		if (isServiceRunning()) {
			unbindService(mConnection);
		}
		unregisterNetReceiver();
		unregisterReceiver();
		super.onStop();
	}
	
	@Override
	protected void onDestroy(){
		super.onDestroy();
		if(!isServiceRunning()){
			deleteSessionData();
		}
	}

	@Override
	protected void onResume() {
		super.onResume();
		updateConnectionInfo();
	}


	public void buttonOnOffClick(View view) {
		if (((ToggleButton) view).isChecked()) {
			if (isParanoid()) {
				protocolClicked = "PANIC";
			} else {
				protocolClicked = "SMB";
			}			
			startAndBind();
		} else {
			mService.stopListeners();
			stopAndUnbind();
		}
	}

	private void startAndBind() {
		startService(getServiceIntent());
		bindService(getServiceIntent(), mConnection, BIND_AUTO_CREATE);
	}

	private void stopAndUnbind() {
		unbindService(mConnection);
		stopService(getServiceIntent());
	}
	
	private ServiceConnection mConnection = new ServiceConnection() {

		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			mService = ((LocalBinder) service).getService();
			if(protocolClicked != null && protocolClicked.equals("PANIC")){
				mService.startListeners();
			}else{
				mService.toggleListener(protocolClicked);
			}
			protocolClicked = null;
			updateUI();
		}

		@Override
		public void onServiceDisconnected(ComponentName name) {
			mService = null;			
		}

	};
	
	private Intent getServiceIntent() {
		return new Intent(this, HoneyService.class);
	}

	private boolean isParanoid() {
		return ((CheckBox) findViewById(R.id.checkBoxParanoid)).isChecked();
	}

	private void initListView() {
		ArrayList<HashMap<String, String>> data = new ArrayList<HashMap<String, String>>();
		for (String protocol : getResources().getStringArray(R.array.protocols)) {
			HashMap<String, String> d = new HashMap<String, String>();
			d.put("light", String.valueOf(R.drawable.light_grey));
			d.put("protocol", protocol);
			d.put("connections", "-");
			data.add(d);
		}
		listView = (ListView) findViewById(R.id.listViewProtocols);
		adapter = new ListViewAdapter(getLayoutInflater(), data);
		listView.setAdapter(adapter);
		listView.setOnTouchListener(new OnTouchListener() {

			@Override
			public boolean onTouch(View v, MotionEvent event) {
				return gestureDetector.onTouchEvent(event);
			}

		});
		listView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				String protocolName = (String) ((HashMap<?, ?>) adapter
						.getItem(position)).get("protocol");
				if (isServiceRunning()) {
					mService.toggleListener(protocolName);	
					if(!mService.hasRunningListeners())
						stopAndUnbind();
				}else{
					protocolClicked = protocolName;
					startAndBind();
				}											
			}
		});
	}

	private boolean isServiceRunning() {
		ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
		for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
			if (service.service.getClassName().equals(HoneyService.class.getName())) {
				return true;
			}
		}
		return false;
	}
	
	// Delete session data
	private void deleteSessionData(){
    	editor.clear();
    	editor.commit();
	}

	private void registerReceiver() {
		LocalBroadcastManager.getInstance(this).registerReceiver(mReceiver,
				new IntentFilter(BROADCAST));
	}

	private void unregisterReceiver() {
		LocalBroadcastManager.getInstance(this).unregisterReceiver(mReceiver);
	}
	
	private BroadcastReceiver mReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
			updateUI();
		}
	};

	private void registerNetReceiver() {
	    // register BroadcastReceiver on network state changes
	    final IntentFilter intent = new IntentFilter();
	    intent.addAction(android.net.ConnectivityManager.CONNECTIVITY_ACTION); //"android.net.conn.CONNECTIVITY_CHANGE"
	    registerReceiver(netReceiver, intent);
	}

	private void unregisterNetReceiver() {
		LocalBroadcastManager.getInstance(this).unregisterReceiver(netReceiver);
	}

	private BroadcastReceiver netReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
			if (isServiceRunning()) {
				Toast.makeText(getApplicationContext(),"Connection changed! Services stopped!", Toast.LENGTH_LONG).show();
				mService.stopListeners();
				stopAndUnbind();
			}
			deleteSessionData();
			updateConnectionInfo();
			updateUI();
		}
	};	

	private void updateUI() {		
		boolean activeListeners = false;
		boolean activeHandlers = false;
		boolean yellowLight = false;
		
		for(String protocol : getResources().getStringArray(R.array.protocols)){
			if(pref.getBoolean(protocol + LISTENER, false)){
				activeListeners = true;
				int handlerCount = pref.getInt(protocol + HANDLER_COUNT, 0);
				if(handlerCount > 0){
					activeHandlers = true;
					updateProtocolLight(LIGHT_RED, protocol);
					updateProtocolConnections(handlerCount, protocol);
				} else{
					if(dbh.bssidSeen(protocol, HelperUtils.getBSSID(getApplicationContext()))){
						updateProtocolLight(LIGHT_YELLOW, protocol);
						yellowLight = true;
					} else{
						updateProtocolLight(LIGHT_GREEN, protocol);						
					}
					updateProtocolConnections(0, protocol);
				}
			}else{
				updateProtocolLight(LIGHT_GREY, protocol);
			}
		}

		if (activeListeners) {
			if (activeHandlers) {
				updateStatusLight(LIGHT_RED);
			} else {
				if(yellowLight){
					updateStatusLight(LIGHT_YELLOW);
				} else {
					updateStatusLight(LIGHT_GREEN);
				}					
			}
			((ToggleButton) findViewById(R.id.toggleButtonOnOff))
					.setChecked(true);
			findViewById(R.id.checkBoxParanoid).setEnabled(false);
		} else {
			updateStatusLight(LIGHT_GREY);
			((ToggleButton) findViewById(R.id.toggleButtonOnOff))
					.setChecked(false);
			findViewById(R.id.checkBoxParanoid).setEnabled(true);
		}
	}

	private void updateStatusLight(int light) {
		switch (light) {
		case LIGHT_GREY:
			((ImageView) findViewById(R.id.imageViewLight))
					.setImageResource(R.drawable.light_grey_large);
			break;
		case LIGHT_GREEN:
			((ImageView) findViewById(R.id.imageViewLight))
					.setImageResource(R.drawable.light_green_large);
			break;
		case LIGHT_RED:
			((ImageView) findViewById(R.id.imageViewLight))
					.setImageResource(R.drawable.light_red_large);
			break;
		case LIGHT_YELLOW:
			((ImageView) findViewById(R.id.imageViewLight))
					.setImageResource(R.drawable.light_yellow_large);
			break;
		}
	}

	private void updateProtocolLight(int light, String protocolName) {
		for (int i = 0; i < adapter.getCount(); ++i) {
			HashMap<String, String> d = (HashMap<String, String>) adapter
					.getItem(i);
			if (d.get("protocol").equals(protocolName)) {
				switch (light) {
				case LIGHT_GREY:
					d.put("light", String.valueOf(R.drawable.light_grey));
					d.put("connections", "-");
					break;
				case LIGHT_GREEN:
					d.put("light", String.valueOf(R.drawable.light_green));
					break;
				case LIGHT_RED:
					d.put("light", String.valueOf(R.drawable.light_red));
					break;
				case LIGHT_YELLOW:
					d.put("light", String.valueOf(R.drawable.light_yellow));
					break;
				}
			}
		}
		adapter.notifyDataSetChanged();
	}

	private void updateProtocolConnections(int connections, String protocolName) {
		for (int i = 0; i < adapter.getCount(); ++i) {
			HashMap<String, String> d = ((HashMap<String, String>) adapter
					.getItem(i));
			if (d.get("protocol").equals(protocolName)) {
				d.put("connections", String.valueOf(connections));
			}
		}
		adapter.notifyDataSetChanged();
	}

	private void updateConnectionInfo() {
		TextView ssidView = (TextView) findViewById(R.id.textViewSSIDValue);
		TextView bssidView = (TextView) findViewById(R.id.textViewBSSIDValue);
		TextView internalIPView = (TextView) findViewById(R.id.textViewInternalIPValue);
		TextView externalIPView = (TextView) findViewById(R.id.textViewExternalIPValue);
		
		String ssid = HelperUtils.getSSID(this);
		String bssid = HelperUtils.getBSSID(this);
		String internalIP = HelperUtils.getInternalIP(this);
		String externalIP = HelperUtils.getExternalIP(this);

		if (ssid != null)
			ssidView.setText(ssid);
		else
			ssidView.setText("-");
		
		if (bssid != null)
			bssidView.setText(bssid);
		else
			bssidView.setText("-");
		
		if (internalIP != null)
			internalIPView.setText(internalIP);
		else
			internalIPView.setText("-");
		
		if (externalIP != null)
			externalIPView.setText(externalIP);
		else
			externalIPView.setText("-");		

		ssidView.invalidate();
		bssidView.invalidate();
		internalIPView.invalidate();
	}


	/*############# AB HIER KOMMEN HILFSFUNKTIONEN FÜR GESTEN ##################*/
	
	@Override
	public boolean onTouchEvent(MotionEvent event) {
		return gestureDetector.onTouchEvent(event);
	}
	
	private void initViewAnimator() {
		viewAnimator = (ViewAnimator) findViewById(R.id.viewAnimator);
		gestureDetector = new GestureDetector(this, simpleOnGestureListener);

		animFlipInLR = AnimationUtils.loadAnimation(this,
				R.anim.in_left_to_right);
		animFlipOutLR = AnimationUtils.loadAnimation(this,
				R.anim.out_left_to_right);
		animFlipInRL = AnimationUtils.loadAnimation(this,
				R.anim.in_right_to_left);
		animFlipOutRL = AnimationUtils.loadAnimation(this,
				R.anim.out_right_to_left);
	}
	
	private void swipeRightToLeft() {
		if (viewAnimator.getDisplayedChild() == 0) {
			viewAnimator.setInAnimation(animFlipInRL);
			viewAnimator.setOutAnimation(animFlipOutRL);
			viewAnimator.setDisplayedChild(1);
		}
	}

	private void swipeLeftToRight() {
		if (viewAnimator.getDisplayedChild() == 1) {
			viewAnimator.setInAnimation(animFlipInLR);
			viewAnimator.setOutAnimation(animFlipOutLR);
			viewAnimator.setDisplayedChild(0);
		}
	}

	SimpleOnGestureListener simpleOnGestureListener = new SimpleOnGestureListener() {
		@Override
		public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
				float velocityY) {
			float sensitvity = 50;
			if ((e1.getX() - e2.getX()) > sensitvity) {
				swipeRightToLeft();
			} else if ((e2.getX() - e1.getX()) > sensitvity) {
				swipeLeftToRight();
			}

			return true;
		}
	};
	
	public void showLog(View view){
		startActivity(new Intent(this, ViewLog.class));
	}


}