/*
 * Copyright (C) 2010 Herbert von Broeuschmeul
 * Copyright (C) 2010 BluetoothGPS4Droid Project
 * 
 * This file is part of BluetoothGPS4Droid.
 *
 * BluetoothGPS4Droid 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.
 * 
 * BluetoothGPS4Droid 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 BluetoothGPS4Droid. If not, see <http://www.gnu.org/licenses/>.
 */

package org.broeuschmeul.android.gps.bluetooth.provider;

import java.util.Set;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.preference.Preference.OnPreferenceChangeListener;
import android.util.Log;

/**
 * A PreferenceActivity Class used to configure, start and stop the NMEA tracker service.
 * 
 * @author Herbert von Broeuschmeul
 *
 */
public class BluetoothGpsActivity extends PreferenceActivity implements OnPreferenceChangeListener, OnSharedPreferenceChangeListener {
	private SharedPreferences sharedPref ;
	private BluetoothAdapter bluetoothAdapter = null;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		addPreferencesFromResource(R.xml.pref);      
		sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
		sharedPref.registerOnSharedPreferenceChangeListener(this);
		bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
	}

	/* (non-Javadoc)
	 * @see android.app.Activity#onResume()
	 */
	@Override
	protected void onResume() {
		this.updateDevicePreferenceList();
		super.onResume();
	}

	private void updateDevicePreferenceSummary(){
		// update bluetooth device summary
		String deviceName = "";
		ListPreference prefDevices = (ListPreference)findPreference(BluetoothGpsProviderService.PREF_BLUETOOTH_DEVICE);
		String deviceAddress = sharedPref.getString(BluetoothGpsProviderService.PREF_BLUETOOTH_DEVICE, null);
		if (BluetoothAdapter.checkBluetoothAddress(deviceAddress)){
			deviceName = bluetoothAdapter.getRemoteDevice(deviceAddress).getName();
		}
		prefDevices.setSummary(getString(R.string.pref_bluetooth_device_summary, deviceName));
	}   

	private void updateDevicePreferenceList(){
		// update bluetooth device summary
		updateDevicePreferenceSummary();
		// update bluetooth device list
		ListPreference prefDevices = (ListPreference)findPreference(BluetoothGpsProviderService.PREF_BLUETOOTH_DEVICE);
		Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();        
		String[] entryValues = new String[pairedDevices.size()];
		String[] entries = new String[pairedDevices.size()];
		int i = 0;
		// Loop through paired devices
		for (BluetoothDevice device : pairedDevices) {
			// Add the name and address to the ListPreference enties and entyValues
			Log.e("BT test", "device: "+device.getName() + " -- " + device.getAddress());
			entryValues[i] = device.getAddress();
			entries[i] = device.getName();
			i++;
		}
        prefDevices.setEntryValues(entryValues);
        prefDevices.setEntries(entries);
        Preference pref = (Preference)findPreference(BluetoothGpsProviderService.PREF_TRACK_RECORDING);
        pref.setEnabled(sharedPref.getBoolean(BluetoothGpsProviderService.PREF_START_GPS_PROVIDER, false));
        pref = (Preference)findPreference(BluetoothGpsProviderService.PREF_MOCK_GPS_NAME);
        String mockProvider = sharedPref.getString(BluetoothGpsProviderService.PREF_MOCK_GPS_NAME, getString(R.string.defaultMockGpsName));
        pref.setSummary(getString(R.string.pref_mock_gps_name_summary,mockProvider));
        pref = (Preference)findPreference(BluetoothGpsProviderService.PREF_CONNECTION_RETRIES);
        String maxConnRetries = sharedPref.getString(BluetoothGpsProviderService.PREF_CONNECTION_RETRIES, getString(R.string.defaultConnectionRetries));
        pref.setSummary(getString(R.string.pref_connection_retries_summary,maxConnRetries));
        pref = (Preference)findPreference(BluetoothGpsProviderService.PREF_GPS_LOCATION_PROVIDER);
        if (sharedPref.getBoolean(BluetoothGpsProviderService.PREF_REPLACE_STD_GPS, true)){
        	String s = getString(R.string.pref_gps_location_provider_summary);
        	pref.setSummary(s);
        	Log.e("BT test", "loc. provider: "+s);
        	Log.e("BT test", "loc. provider: "+pref.getSummary());               	
        } else {
        	String s = getString(R.string.pref_mock_gps_name_summary, mockProvider);
        	pref.setSummary(s);
        	Log.e("BT test", "loc. provider: "+s);
        	Log.e("BT test", "loc. provider: "+pref.getSummary());  
        } 
        this.onContentChanged();
    }

	@Override
	protected void onDestroy() {
		super.onDestroy();
		sharedPref.unregisterOnSharedPreferenceChangeListener(this);
	}

	@Override
	public boolean onPreferenceChange(Preference preference, Object newValue) {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
			String key) {
		if (BluetoothGpsProviderService.PREF_START_GPS_PROVIDER.equals(key)){
			boolean val = false;
			if (val = sharedPreferences.getBoolean(key, false)){
				startService(new Intent(BluetoothGpsProviderService.ACTION_START_GPS_PROVIDER));
			} else {
				startService(new Intent(BluetoothGpsProviderService.ACTION_STOP_GPS_PROVIDER));
			}
			CheckBoxPreference pref = (CheckBoxPreference)findPreference(key);
			if (pref.isChecked() != val){
				pref.setChecked(val);
			}
		} else if (BluetoothGpsProviderService.PREF_TRACK_RECORDING.equals(key)){
			boolean val = false;
			if (val = sharedPreferences.getBoolean(key, false)){
				startService(new Intent(BluetoothGpsProviderService.ACTION_START_TRACK_RECORDING));
			} else {
				startService(new Intent(BluetoothGpsProviderService.ACTION_STOP_TRACK_RECORDING));
			}
			CheckBoxPreference pref = (CheckBoxPreference)findPreference(key);
			if (pref.isChecked() != val){
				pref.setChecked(val);
			}
		} else if (BluetoothGpsProviderService.PREF_BLUETOOTH_DEVICE.equals(key)){
			updateDevicePreferenceSummary();
		}
		this.updateDevicePreferenceList();
	}	
}