package dk.thoerup.traininfo;

import static dk.thoerup.traininfo.R.string.departurelist_fetcharrivals;
import static dk.thoerup.traininfo.R.string.departurelist_fetchdepartures;
import static dk.thoerup.traininfo.R.string.generic_cancel;
import static dk.thoerup.traininfo.R.string.generic_retry;

import java.text.NumberFormat;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import dk.thoerup.android.traininfo.common.DepartureBean;
import dk.thoerup.android.traininfo.common.DepartureEntry;
import dk.thoerup.android.traininfo.common.MetroBean;
import dk.thoerup.android.traininfo.common.MetroBean.MetroEntry;
import dk.thoerup.android.traininfo.common.StationBean.StationEntry;
import dk.thoerup.traininfo.provider.DepartureProvider;
import dk.thoerup.traininfo.provider.MetroProvider;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.util.MessageBox;

public class DepartureList extends ListActivity {

	public static final int DLG_PROGRESS = 1;
	static final int MENU_MAP = 100;
	static final int MENU_NOTIFICATIONS = 101;
	static final int MENU_METROMAP= 102;
	
	
	DepartureListAdapter adapter;
	DepartureProvider provider;
	DepartureBean departures;
	
	MetroBean metroBean;
	MetroProvider metro;
	
	int selectedItemId;
	//DepartureBean currentDeparture;
	
	ProgressDialog pgDialog;
	
	DepartureFetcher fetcher;
	MetroFetcher metroFetcher;

	StationEntry station;
	
	String trainType = "REGIONAL";
	
	boolean arrival = false;

	int commFailCounter = 0;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.departurelist);
		
		adapter = new DepartureListAdapter(this);
		setListAdapter(adapter);
		
		Intent launchedBy = getIntent();
	
		station = (StationEntry) launchedBy.getSerializableExtra("stationbean");
		
		((TextView) findViewById(R.id.stationName)).setText( station.getName() );


		((TextView) findViewById(R.id.stationAddr)).setText( station.getAddress() );
		
		final Button departureBtn = (Button) findViewById(R.id.departurebtn);
		final Button arrivalBtn = (Button) findViewById(R.id.arrivalbtn);
		final Button metroBtn = (Button) findViewById(R.id.metrobtn);
		final Button regionalBtn = (Button) findViewById(R.id.regionalbtn);
		final Button stogBtn = (Button) findViewById(R.id.stogbtn);
		
		final View metroView = findViewById(R.id.metroonly);
		
		departureBtn.setOnClickListener( new OnClickListener() {
			@Override
			public void onClick(View arg0) {	
				arrivalBtn.setBackgroundResource(R.drawable.custom_button);
				departureBtn.setBackgroundResource(R.drawable.custom_button_hilight);
				metroBtn.setBackgroundResource(R.drawable.custom_button);
				
				getListView().setVisibility( View.VISIBLE );		
				metroView.setVisibility( View.GONE );
				arrival = false;
				startDepartureFetcher();
			}
		});
		arrivalBtn.setOnClickListener( new OnClickListener() {
			@Override
			public void onClick(View arg0) {	
				arrivalBtn.setBackgroundResource(R.drawable.custom_button_hilight);
				departureBtn.setBackgroundResource(R.drawable.custom_button);
				metroBtn.setBackgroundResource(R.drawable.custom_button);
				
				getListView().setVisibility( View.VISIBLE );		
				metroView.setVisibility( View.GONE );
				arrival = true;			
				startDepartureFetcher();
			}
		});
		
		regionalBtn.setOnClickListener( new OnClickListener() {
			@Override
			public void onClick(View arg0) {	
				regionalBtn.setBackgroundResource(R.drawable.custom_button_hilight);
				stogBtn.setBackgroundResource(R.drawable.custom_button);				
				metroBtn.setBackgroundResource(R.drawable.custom_button);
				
				departureBtn.setVisibility( View.VISIBLE );
				arrivalBtn.setVisibility( View.VISIBLE );
				
				getListView().setVisibility( View.VISIBLE );		
				metroView.setVisibility( View.GONE );
				trainType = "REGIONAL";
				startDepartureFetcher();
			}
		});
		stogBtn.setOnClickListener( new OnClickListener() {
			@Override
			public void onClick(View arg0) {	
				regionalBtn.setBackgroundResource(R.drawable.custom_button);
				stogBtn.setBackgroundResource(R.drawable.custom_button_hilight);				
				metroBtn.setBackgroundResource(R.drawable.custom_button);


				departureBtn.setVisibility( View.VISIBLE );
				arrivalBtn.setVisibility( View.VISIBLE );
				
				getListView().setVisibility( View.VISIBLE );		
				metroView.setVisibility( View.GONE );
				trainType = "STOG";			
				startDepartureFetcher();
			}
		});

		
		
		metroBtn.setOnClickListener( new OnClickListener() {			
			@Override
			public void onClick(View v) {
				regionalBtn.setBackgroundResource(R.drawable.custom_button);
				stogBtn.setBackgroundResource(R.drawable.custom_button);				
				metroBtn.setBackgroundResource(R.drawable.custom_button_hilight);
				
				departureBtn.setVisibility( View.GONE );
				arrivalBtn.setVisibility( View.GONE );
				
				getListView().setVisibility( View.GONE );		
				metroView.setVisibility( View.VISIBLE );
				startMetroFetcher();
			}
		});
		
		
		
		
		// findViewById(R.id.header).setOnClickListener( mapLauncher );
		
		int distance = station.getCalcdist();
		if (distance != 0) {
			NumberFormat format = NumberFormat.getNumberInstance();
			format.setMaximumFractionDigits(1);
			format.setMinimumFractionDigits(1);
		
			((TextView) findViewById(R.id.stationDistance)).setText( format.format((double)distance/1000.0) + " km." );
		} else {
			((TextView) findViewById(R.id.stationDistance)).setVisibility(View.GONE);
		}
	
		ProviderFactory.purgeOldEntries(); //cleanup before fetching more data
		
		Log.e("Station", station.toCSV() );
		
		if (station.isMetro() == false) {
			metroBtn.setVisibility( View.GONE );
		}
	
		metro = ProviderFactory.getMetroProvider();
		
		if (station.isRegional() == false ) {
			regionalBtn.setVisibility(View.GONE);
		}
		
		if (station.isStrain() == false ) {
			stogBtn.setVisibility(View.GONE);
		}
		
		if (station.isRegional() == true && station.isStrain() == false ) {
			if ( station.isMetro() == false ) 
				regionalBtn.setVisibility(View.GONE);
			trainType = "REGIONAL";			
		}		

		if (station.isRegional() == false  && station.isStrain() == true) {
			if (station.isMetro() == false)
				stogBtn.setVisibility(View.GONE);

			stogBtn.setBackgroundResource(R.drawable.custom_button_hilight);
			trainType = "STOG";
			
		}
				
		
		if (station.isRegional() == false && station.isStrain() == false) {
			getListView().setVisibility( View.GONE );		
			metroView.setVisibility( View.VISIBLE );
			
			departureBtn.setVisibility( View.GONE );
			arrivalBtn.setVisibility(View.GONE);
			metroBtn.setVisibility( View.GONE );		
			
			
			
			if (savedInstanceState == null) {
				startMetroFetcher();
			} else {
				metroBean = (MetroBean) savedInstanceState.getSerializable("metro");
				loadMetroData();
			}
			
		} else {
			provider = ProviderFactory.getDepartureProvider();
			
			if (savedInstanceState == null) {
				startDepartureFetcher();
			} else {
				departures = (DepartureBean) savedInstanceState.getSerializable("departures");
				
				if ( (departures != null) && (departures.entries != null) ) {
					adapter.setDepartures(departures.entries);
				}
				selectedItemId = savedInstanceState.getInt("selectedItemId");
				
				if ( hasNotifications() ) {
					findViewById(R.id.notifIcon).setVisibility(View.VISIBLE);
				}
				
			}
		}
	}
	
	boolean hasNotifications() {
		return (departures != null && departures.notifications.size() > 0);
	}
	
    @Override 
    public void onSaveInstanceState(Bundle outState) 
    {
    	if (pgDialog != null && pgDialog.isShowing())
    		dismissDialog(DLG_PROGRESS);

    	outState.putInt("selectedItemId", selectedItemId);
    	
    	outState.putSerializable("departures",  departures);
    	outState.putSerializable("metro", metroBean);
    }
    
    
	
	@Override
	protected void onDestroy() {
		super.onDestroy();
		
		if (fetcher != null) {
			fetcher.cancel(true);
		}
		
		if (metroFetcher != null) {
			metroFetcher.cancel(true);
		}
	}

	@Override
	protected void onListItemClick(ListView l, View v, int position, long id) {
		super.onListItemClick(l, v, position, id);
		
		selectedItemId = position;
		
		DepartureEntry dep = departures.entries.get(selectedItemId);
	
		Intent intent = new Intent(this, TimetableList.class);
		intent.putExtra("departure", dep);
		
		startActivity(intent);
				
	}
	

	@Override
	protected void onPrepareDialog(int id, Dialog dialog) {
		super.onPrepareDialog(id, dialog);
		
		switch (id) {
		case DLG_PROGRESS:
			pgDialog = (ProgressDialog) dialog;
			int messageId = arrival == false ? departurelist_fetchdepartures : departurelist_fetcharrivals;
			pgDialog.setMessage( getString(messageId) );
			break;
		}
	}
	
	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case DLG_PROGRESS:

			ProgressDialog dlg = new ProgressDialog(this);
			dlg.setCancelable(true);
			return dlg;			
		default:
			return super.onCreateDialog(id);		
		}
	}
	
	



	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuItem item;
		
		item = menu.add(0, MENU_MAP, 0, getString(R.string.departurelist_showonmap) );
		item.setIcon(android.R.drawable.ic_menu_mapmode);
		
		item = menu.add(0, MENU_NOTIFICATIONS, 0, getString(R.string.departurelist_notifications) );
		item.setIcon(android.R.drawable.ic_menu_info_details);			
		
		boolean notifEnabled = hasNotifications();
		item.setEnabled(notifEnabled);
		
		if (station.isMetro()) {
			item = menu.add(0, MENU_METROMAP, 0, "Metro" ); //TODO:translate!?!
			item.setIcon(android.R.drawable.ic_menu_mapmode);			
		}
		

		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {		
		boolean res;
		switch(item.getItemId()) {
		case MENU_MAP:
			Uri uri = Uri.parse("geo:" + station.getLatitude() + "," + station.getLongitude() + "?z=16");
			startActivity( new Intent(Intent.ACTION_VIEW, uri));
			res = true;
			break;
		case MENU_NOTIFICATIONS:
			Intent i = new Intent(this,dk.thoerup.traininfo.NotificationList.class);
			i.putExtra(NotificationList.EXTRA_NOTIFICATIONS, departures.notifications);
			startActivity(i);
			res = true;
			break;
		case MENU_METROMAP:
			Intent metroMap = new Intent(this,dk.thoerup.traininfo.MetroMap.class);
			startActivity(metroMap);
			res = true;
			break;			
		default:
			res = super.onOptionsItemSelected(item); 
		}
		return res;
	}

	void startDepartureFetcher() {
		showDialog(DLG_PROGRESS);
		fetcher = new DepartureFetcher(); 
		fetcher.execute(station.getId());
	}
	
	void startMetroFetcher() {
		showDialog(DLG_PROGRESS);
		metroFetcher = new MetroFetcher(); 
		metroFetcher.execute(station.getId());		
	}
	
	class DialogDismisser implements View.OnClickListener {

		Dialog dlg;
		public DialogDismisser(Dialog d) {
			dlg = d;
		}
		
		@Override
		public void onClick(View v) {
			if (dlg.isShowing())
				dlg.dismiss();
		}	
	}
	
	/*View.OnClickListener mapLauncher = new View.OnClickListener() {
		@Override
		public void onClick(View v) {			
			Uri uri = Uri.parse("geo:" + station.getLatitude() + "," + station.getLongitude());
			startActivity( new Intent(Intent.ACTION_VIEW, uri));
		}
	};*/


	
	class DepartureFetcher extends AsyncTask<Integer, Void, Void> {

		@Override
		protected void onPostExecute(Void result) {
			super.onPostExecute(result);
			
			
			pgDialog.dismiss();
			
			if (departures != null) {
				commFailCounter = 0;
				DepartureList.this.getListView().setVisibility(View.GONE); //Experimental, inspired by http://osdir.com/ml/Android-Developers/2010-04/msg01198.html
				adapter.setDepartures(departures.entries);
				DepartureList.this.getListView().setVisibility(View.VISIBLE);
				
				
				// handle notification icon.								
				if ( hasNotifications() ) {
					View notifIcon = findViewById(R.id.notifIcon);
					notifIcon.setVisibility(View.VISIBLE);
					notifIcon.setClickable(true);
					notifIcon.setOnClickListener( new View.OnClickListener() {						
						@Override
						public void onClick(View v) {
							Intent i = new Intent(DepartureList.this, dk.thoerup.traininfo.NotificationList.class);
							i.putExtra(NotificationList.EXTRA_NOTIFICATIONS, departures.notifications);
							startActivity(i);							
						}
					});
				} 				
				
				if (departures.entries.size() != 0) {
					int msgId = (arrival==false) ? R.string.departurelist_nodepartures : R.string.departurelist_noarrivals; 
					MessageBox.showMessage(DepartureList.this, getString(msgId), false);
				}
			} else { // communication or parse error
				commFailCounter++;
				AlertDialog.Builder builder = new AlertDialog.Builder(DepartureList.this);						
				builder.setMessage("Error finding departures");
				builder.setCancelable(true);
				if (commFailCounter < 3) {
					builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
						public void onClick(DialogInterface dialog, int id) {
							dialog.dismiss();
							startDepartureFetcher();
							
						}
					});
				}
				builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int id) {
						dialog.dismiss();
						DepartureList.this.finish();
					}							
				});
				
				try {
					builder.show();
				} catch (android.view.WindowManager.BadTokenException e) {					
					Log.i("DepartureList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
				}				
			}
		}

		@Override
		protected Void doInBackground(Integer... params) {
			departures = provider.lookupDepartures(params[0], DepartureList.this.arrival, trainType);
			return null;
		}
		
	}
	
	public void loadMetroData() {
		((TextView) findViewById(R.id.operations)).setText( metroBean.operationInfo );
		((TextView) findViewById(R.id.plan)).setText( metroBean.plan );
		
		
		TableLayout table = (TableLayout) findViewById(R.id.metrotable);
		table.removeAllViews();
		
		TableRow head = new TableRow(this);
		
		TextView h1 = new TextView(this);
		h1.setText("Metro");
		h1.setTextSize(16);
		h1.setTypeface( Typeface.defaultFromStyle(Typeface.BOLD));
		
		
		TableRow.LayoutParams params = new TableRow.LayoutParams();
		params.span = 2;
		head.addView(h1, params);
		
		
		
		TextView h2 = new TextView(this);
		h2.setTextSize(16);
		h2.setTypeface( Typeface.defaultFromStyle(Typeface.BOLD));
		h2.setText("Om minutter");
		
		params = new TableRow.LayoutParams();
		params.weight = 2;
		head.addView(h2,params);

		
		
		table.addView(head);

		for (MetroEntry entry : metroBean.entries) {
			TableRow row = new TableRow(this);
			
			Log.e("Test", "" + entry.destination);
			
			TextView v1 = new TextView(this);
			v1.setTextSize(16);
			v1.setText( entry.metro );			
			row.addView(v1);
			
			TextView v2 = new TextView(this);
			v2.setTextSize(16);
			v2.setText( entry.destination );
			row.addView(v2);
		
			TextView v3 = new TextView(this);
			v3.setTextSize(16);
			v3.setText( entry.minutes );
			row.addView(v3);
			
			table.addView(row);
			
		}
		findViewById(R.id.rootView).requestLayout();
	}
	
	class MetroFetcher extends AsyncTask<Integer, Void, Void> {
		
		@Override
		protected void onPostExecute(Void result) {
			super.onPostExecute(result);
			
			
			
			pgDialog.dismiss();
			
			if (metroBean != null) {
				loadMetroData();
			} else { // communication or parse error
				commFailCounter++;
				AlertDialog.Builder builder = new AlertDialog.Builder(DepartureList.this);						
				builder.setMessage("Error finding metro data");
				builder.setCancelable(true);
				if (commFailCounter < 3) {
					builder.setPositiveButton(getString(generic_retry), new DialogInterface.OnClickListener() {
						public void onClick(DialogInterface dialog, int id) {
							dialog.dismiss();
							startMetroFetcher();
							
						}
					});
				}
				builder.setNegativeButton(getString(generic_cancel), new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int id) {
						dialog.dismiss();
						DepartureList.this.finish();
					}							
				});
				
				try {
					builder.show();
				} catch (android.view.WindowManager.BadTokenException e) {					
					Log.i("DepartureList", "BadTokenException"); // this can happen if the user switched away from this activity, while doInBackground was running
				}				
			}
		}

		@Override
		protected Void doInBackground(Integer... params) {			
			metroBean = metro.lookupMetroInfo(params[0]);
			return null;
		}
		
	}

}