package de.tudarmstadt.informatik.hostage.ui2.fragment;

import java.util.ArrayList;

import android.app.AlertDialog;
import android.app.Fragment;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CompoundButton;
import android.widget.ListView;
import android.widget.Switch;
import android.widget.TextView;
import de.tudarmstadt.informatik.hostage.Handler;
import de.tudarmstadt.informatik.hostage.R;
import de.tudarmstadt.informatik.hostage.commons.HelperUtils;
import de.tudarmstadt.informatik.hostage.persistence.HostageDBOpenHelper;
import de.tudarmstadt.informatik.hostage.ui2.activity.MainActivity;
import de.tudarmstadt.informatik.hostage.ui2.adapter.ServicesListAdapter;
import de.tudarmstadt.informatik.hostage.ui2.model.ServicesListItem;

/**
 * Created by Daniel Lazar on 05.02.14.
 */
public class ServicesFragment extends Fragment {

	private Switch mServicesSwitchService;
	private TextView mServicesTextName;

	private View rootView;

	private CompoundButton.OnCheckedChangeListener switchChangeListener = null;

	private BroadcastReceiver mReceiver;

	private ServicesListAdapter adapter;

	private ArrayList<ServicesListItem> protocolList;

	private HostageDBOpenHelper dbh = new HostageDBOpenHelper(MainActivity.getContext());

	private String[] protocols;

	private SharedPreferences mConnectionInfo;

	private boolean mReceiverRegistered = false;

	private void assignViews() {
		mServicesSwitchService = (Switch) rootView.findViewById(R.id.service_switch_connection);
		mServicesTextName = (TextView) rootView.findViewById(R.id.services_text_name);

		rootView.findViewById(R.id.services_button_connection_info).setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				ConnectionInfoDialogFragment connectionInfoDialogFragment = new ConnectionInfoDialogFragment();
				connectionInfoDialogFragment.show(getFragmentManager().beginTransaction(), connectionInfoDialogFragment.getTag());
			}
		});

	}

	public void updateUI() {
		if (!HelperUtils.isWifiConnected(getActivity())) {
			mServicesSwitchService.setOnCheckedChangeListener(null);
			setStateNotConnected();
			setStateNotActive();
			mServicesSwitchService.setOnCheckedChangeListener(switchChangeListener);
		} else {
			if (MainActivity.getInstance().getHostageService().hasRunningListeners()) {
				setStateActive();
			}

			mServicesTextName.setText(HelperUtils.getSSID(getActivity()));
		}

	}

	public ServicesFragment() {
	}

	private void registerBroadcastReceiver() {
		if (!mReceiverRegistered) {
			mReceiver = new BroadcastReceiver() {
				@Override
				public void onReceive(Context context, Intent intent) {
					String sender = intent.getStringExtra("SENDER");
					String[] values = intent.getStringArrayExtra("VALUES");

					if (sender.equals(Handler.class.getName()) && values[0].equals(getString(R.string.broadcast_started))) {
						for (ServicesListItem item : protocolList) {
							if (item.protocol.equals(values[1])) {
								item.attacks = dbh.numBssidSeen(item.protocol, mConnectionInfo.getString(getString(R.string.connection_info_bssid), null));
							}
						}
					}

					if (!MainActivity.getInstance().getHostageService().hasRunningListeners()) {
						setStateNotActive();
					} else {
						setStateActive();
					}

					adapter.notifyDataSetChanged();
				}
			};

			LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mReceiver, new IntentFilter(getString(R.string.broadcast)));
			this.mReceiverRegistered = true;
		}
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

		super.onCreateView(inflater, container, savedInstanceState);

		rootView = inflater.inflate(R.layout.fragment_services, container, false);
		assignViews();

		protocols = getResources().getStringArray(R.array.protocols);
		mConnectionInfo = getActivity().getSharedPreferences(getString(R.string.connection_info), Context.MODE_PRIVATE);

		updateUI();

		ListView list = (ListView) rootView.findViewById(R.id.services_list_view);

		protocolList = new ArrayList<ServicesListItem>();
		int i = 0;
		for (String protocol : protocols) {
			protocolList.add(new ServicesListItem(protocol));
			protocolList.get(i).attacks = dbh.numBssidSeen(protocolList.get(i).protocol,
					mConnectionInfo.getString(getString(R.string.connection_info_bssid), null));
			i++;
		}

		mServicesSwitchService = (Switch) rootView.findViewById(R.id.service_switch_connection);

		if (switchChangeListener == null) {
			switchChangeListener = new CompoundButton.OnCheckedChangeListener() {
				public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
					if (!HelperUtils.isWifiConnected(getActivity())) {
						new AlertDialog.Builder(getActivity()).setTitle(R.string.information).setMessage(R.string.wifi_not_connected_msg)
								.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
									public void onClick(DialogInterface dialog, int which) {

									}
								}).setIcon(android.R.drawable.ic_dialog_info).show();

						setStateNotActive();
						setStateNotConnected();
					} else {
						if (MainActivity.getInstance().isServiceBound()) {
							if (isChecked) {
								for (String protocol : protocols) {
									if (!MainActivity.getInstance().getHostageService().isRunning(protocol)) {
										MainActivity.getInstance().getHostageService().startListener(protocol);
									}
								}
								setStateActive();
							} else {
								MainActivity.getInstance().getHostageService().stopListeners();
								MainActivity.getInstance().stopAndUnbind();
								setStateNotActive();
							}
						}
					}
				}

			};
		}
		mServicesSwitchService.setOnCheckedChangeListener(switchChangeListener);

		adapter = new ServicesListAdapter(getActivity().getBaseContext(), protocolList);
		adapter.setActivity(this.getActivity(), this.mServicesSwitchService, this.switchChangeListener);
		list.setAdapter(adapter);

		registerBroadcastReceiver();

		return rootView;

	};

	@Override
	public void onStart() {
		super.onStart();
		registerBroadcastReceiver();
		mServicesSwitchService.setOnCheckedChangeListener(switchChangeListener);
	}

	private void unregisterBroadcastReceiver() {
		if (mReceiverRegistered) {
			LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(mReceiver);
			this.mReceiverRegistered = false;
		}
	}

	private void setStateActive() {
		mServicesSwitchService.setChecked(true);
	}

	private void setStateNotConnected() {
		mServicesTextName.setText(R.string.not_connected);
	}

	private void setStateNotActive() {
		mServicesSwitchService.setChecked(false);
	}

	@Override
	public void onStop() {
		super.onStop();
		mServicesSwitchService.setOnCheckedChangeListener(null);
	}

	@Override
	public void onDestroy() {
		super.onDestroy();
		unregisterBroadcastReceiver();
	}

}