package apt.tutorial;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

public class DetailForm extends Activity {
  EditText name=null;
  EditText address=null;
  EditText notes=null;
  EditText feed=null;
  RadioGroup types=null;
  VehicleHelper helper=null;
  String vehicleId=null;
  TextView location=null;
  LocationManager locMgr=null;
  double latitude=0.0d;
  double longitude=0.0d;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.detail_form);
    
    locMgr=(LocationManager)getSystemService(LOCATION_SERVICE);
    helper=new VehicleHelper(this);
    
    name=(EditText)findViewById(R.id.name);
    address=(EditText)findViewById(R.id.addr);
    notes=(EditText)findViewById(R.id.notes);
    types=(RadioGroup)findViewById(R.id.types);
    feed=(EditText)findViewById(R.id.feed);
    location=(TextView)findViewById(R.id.location);
    
    vehicleId=getIntent().getStringExtra(VehicleList.ID_EXTRA);
    
    if (vehicleId!=null) {
      load();
    }
  }
  
  @Override
  public void onPause() {
    save();
    
    super.onPause();
  }
  
  @Override
  public void onDestroy() {
    helper.close();
    locMgr.removeUpdates(onLocationChange);
    
    super.onDestroy();
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    new MenuInflater(this).inflate(R.menu.details_option, menu);

    return(super.onCreateOptionsMenu(menu));
  }

  @Override
  public boolean onPrepareOptionsMenu(Menu menu) {
    if (vehicleId==null) {
      menu.findItem(R.id.location).setEnabled(false);
      menu.findItem(R.id.map).setEnabled(false);
    }

    return(super.onPrepareOptionsMenu(menu));
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId()==R.id.feed) {
      if (isNetworkAvailable()) {
        Intent i=new Intent(this, FeedActivity.class);
        
        i.putExtra(FeedActivity.FEED_URL, feed.getText().toString());
        startActivity(i);
      }
      else {
        Toast
          .makeText(this, "Sorry, the Internet is not available",
                    Toast.LENGTH_LONG)
          .show();
      }
    
      return(true);
    }
    else if (item.getItemId()==R.id.location) {
      locMgr.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                                    0, 0, onLocationChange);
      
      return(true);
    }
    else if (item.getItemId()==R.id.map) {
      Intent i=new Intent(this, VehicleMap.class);
      
      i.putExtra(VehicleMap.EXTRA_LATITUDE, latitude);
      i.putExtra(VehicleMap.EXTRA_LONGITUDE, longitude);
      i.putExtra(VehicleMap.EXTRA_NAME, name.getText().toString());
      
      startActivity(i);
      
      return(true);
    }

    return(super.onOptionsItemSelected(item));
  }
  
  private boolean isNetworkAvailable() {
    ConnectivityManager cm=(ConnectivityManager)getSystemService(CONNECTIVITY_SERVICE);
    NetworkInfo info=cm.getActiveNetworkInfo();
    
    return(info!=null);
  }
  
  private void load() {
    Cursor c=helper.getById(vehicleId);

    c.moveToFirst();    
    name.setText(helper.getName(c));
    address.setText(helper.getAddress(c));
    notes.setText(helper.getNotes(c));
    feed.setText(helper.getFeed(c));
    
    if (helper.getType(c).equals("sit_down")) {
      types.check(R.id.sit_down);
    }
    else if (helper.getType(c).equals("take_out")) {
      types.check(R.id.take_out);
    }
    else {
      types.check(R.id.delivery);
    }
    
    latitude=helper.getLatitude(c);
    longitude=helper.getLongitude(c);
    
    location.setText(String.valueOf(latitude)
                      +", "
                      +String.valueOf(longitude));
    
    c.close();
  }
  
  private void save() {
    if (name.getText().toString().length()>0) {
      String type=null;
      
      switch (types.getCheckedRadioButtonId()) {
        case R.id.sit_down:
          type="sit_down";
          break;
        case R.id.take_out:
          type="take_out";
          break;
        default:
          type="delivery";
          break;
      }
  
      if (vehicleId==null) {
        helper.insert(name.getText().toString(),
                      address.getText().toString(), type,
                      notes.getText().toString(),
                      feed.getText().toString());
      }
      else {
        helper.update(vehicleId, name.getText().toString(),
                      address.getText().toString(), type,
                      notes.getText().toString(),
                      feed.getText().toString());
      }
    }
  }
  
  LocationListener onLocationChange=new LocationListener() {
    public void onLocationChanged(Location fix) {
      helper.updateLocation(vehicleId, fix.getLatitude(),
                            fix.getLongitude());
      location.setText(String.valueOf(fix.getLatitude())
                      +", "
                      +String.valueOf(fix.getLongitude()));
      locMgr.removeUpdates(onLocationChange);
      
      Toast
        .makeText(DetailForm.this, "Location saved",
                  Toast.LENGTH_LONG)
        .show();
    }
    
    public void onProviderDisabled(String provider) {
      // required for interface, not used
    	Toast.makeText(DetailForm.this,
    	   "Provider disabled by the user. GPS turned off",
    			Toast.LENGTH_LONG).show();
    }
    
    public void onProviderEnabled(String provider) {
      // required for interface, not used
    	Toast.makeText(DetailForm.this,
    		"Provider enabled by the user. GPS turned on",
   	             Toast.LENGTH_LONG).show();
    }
    
    public void onStatusChanged(String provider, int status,
                                  Bundle extras) {
      // required for interface, not used
    	Toast.makeText(DetailForm.this, "Provider status changed",
    	      Toast.LENGTH_LONG).show();
    }
  };
}