package dk.thoerup.traininfo;

import java.util.ArrayList;
import java.util.List;

import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

import android.view.View;
import android.widget.ListView;
import dk.thoerup.traininfo.util.MessageBox;

public class TrainInfoList extends ListActivity  {
	public static final int GOTLOCATION = 1;
	public static final int GOTSTATIONLIST = 2;
	public static final int NOPROVIDER = 3;
	public static final int FIXTIMEOUT = 4;
	public static final int LOOKUPSTATIONFAILED = 5;
	
	public static final int DLG_PROGRESS = 1;
	
	/** Called when the activity is first created. */
	ProgressDialog dialog;
	StationLocator locator = null;
	LocatorTask locatorTask = new LocatorTask();
	
	boolean isRunning = false;
	List<StationBean> stations = new ArrayList<StationBean>();
	
	
	StationListAdapter adapter = null;
	@SuppressWarnings("unchecked")
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		StationLocator.removeMockLocation(this);
		//StationLocator.injectMockLocation(this);
		
		adapter = new StationListAdapter(this);
		setListAdapter(adapter);
		
		locator = new StationLocator(this, stationsFetched);
		if (savedInstanceState == null) {
			startLookup();
		} else {
			stations = (ArrayList<StationBean>) savedInstanceState.getSerializable("stations");
			adapter.setStations(stations);
		}
	}
	
    @Override 
    public void onSaveInstanceState(Bundle outState) 
    {
    	if (dialog != null && dialog.isShowing())
    		dialog.dismiss();
    	outState.putSerializable("stations", (ArrayList<StationBean>) stations);
    }
	
	

	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case DLG_PROGRESS:
			ProgressDialog dlg = new ProgressDialog(this);
			dlg.setMessage("Wait for location fix");
			dlg.setCancelable(false);
			return dlg;
		default:
			return super.onCreateDialog(id);		
		}
		
	}
	
	

	@Override
	protected void onPrepareDialog(int id, Dialog dialog) {
		super.onPrepareDialog(id, dialog);
		switch (id) {
		case DLG_PROGRESS:
			this.dialog = (ProgressDialog) dialog;
			break;
		}
	}

	public void startLookup() {
		isRunning = true;
		showDialog(DLG_PROGRESS);
		
		locator.locateStations();
		stationsFetched.sendEmptyMessageDelayed(FIXTIMEOUT, 20000);
	}


	Handler stationsFetched = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case GOTLOCATION:
				dialog.setMessage("Finding nearby stations");
				locatorTask.execute();
				break;
			case GOTSTATIONLIST:
				dialog.dismiss();
				if (locator.getStations().size() == 0)
					MessageBox.showMessage(TrainInfoList.this,"Error loading station list!");
				stations = locator.getStations();
				adapter.setStations( stations );
				break;
			case NOPROVIDER:
				dialog.dismiss();
				MessageBox.showMessage(TrainInfoList.this,"No location provider enabled. Plase enable gps.");
				break;
			case FIXTIMEOUT:
				dialog.dismiss();
				if (isRunning) {
					locator.abortLocationListener();
					MessageBox.showMessage(TrainInfoList.this,"GPS fix timed out");
				}
				break;
			case LOOKUPSTATIONFAILED:
				dialog.dismiss();
				MessageBox.showMessage(TrainInfoList.this,"Error on finding nearby stations");
				break;
			}
			isRunning = false;
		}
	};
	
	
	
	@Override
	protected void onListItemClick(ListView l, View v, int position, long id) {
		super.onListItemClick(l, v, position, id);
		
		
		StationBean station = stations.get(position);
		
		
		Intent intent = new Intent(this, DepartureList.class);
		intent.putExtra("name", station.getName());
		intent.putExtra("address", station.getAddress());
		intent.putExtra("distance", station.getDistance());
		intent.putExtra("latitude", station.getLatitude());
		intent.putExtra("longitude", station.getLongitude());
		startActivity(intent);
	}

	
	class LocatorTask extends AsyncTask<Void,Void,Void> {
		@Override
		protected void onPreExecute() {

			super.onPreExecute();
		}
		
		@Override
		protected Void doInBackground(Void... params) {
			locator.findNearestStations();
			
			return null;
		}

		@Override
		protected void onPostExecute(Void result) {
			super.onPostExecute(result);

		}
	}
}