package dk.thoerup.side9;

import java.net.URL;
import java.net.URLConnection;

import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.ConnectivityManager;
import android.net.Uri;
import android.util.Log;
import android.widget.RemoteViews;

public class Side9WidgetProvider extends AppWidgetProvider  {


	//The data needs to be static, since BroadcastReceivers (which WidgetProviders extends) are only valid during onReceive()
	private static Side9Data usedData;
	private static Bitmap usedBitmap; 
	private static long timestamp;

	final static long UDPATESPAN = 3*60*60*1000;


	static  {
		timestamp = 0L;
	}

	public Side9WidgetProvider() {
		Log.i("Side9Pigen", "WidgetProvider constructor called");
	}

	private void setImage(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds, Bitmap image) {
		// Perform this loop procedure for each App Widget that belongs to this provider
		final int N = appWidgetIds.length; 
		for (int i=0; i<N; i++) {
			int appWidgetId = appWidgetIds[i];

			RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.side9widget);

			if (image != null) {
				views.setImageViewBitmap(R.id.side9picture, image);
			} else {
				views.setImageViewResource(R.id.side9picture, R.drawable.side9logo);
			}
			//views.setTextViewText(R.id.caption, newData.caption);


			// Launch a browser when user clicks on the image
			Intent viewIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://ekstrabladet.dk/side9/"));
			viewIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
			PendingIntent pending = PendingIntent.getActivity(context, 0, viewIntent, Intent.FLAG_ACTIVITY_NEW_TASK);		            
			views.setOnClickPendingIntent(R.id.side9picture, pending);		            

			// Tell the AppWidgetManager to perform an update on the current App Widget
			appWidgetManager.updateAppWidget(appWidgetId, views);

			Log.i("Side9Pigen", "done " + appWidgetId);
		}	
	}

	@Override
	public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
		super.onUpdate(context, appWidgetManager, appWidgetIds);

		Log.i("Side9Pigen", "onUpdate:");

		if (usedBitmap == null) { //load default view
			usedBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.side9logo);
		}



		ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (connMgr.getBackgroundDataSetting() == false)
		{
			Log.i("Side9Pigen", "background data disabled");
			return;
		}

		if (System.currentTimeMillis() > (timestamp+UDPATESPAN) ) {
			Log.i("Side9Pigen", "time elapsed, force XML reload");
			usedData = null;
		}

		try {
			Side9Data newData = Side9Xml.loadXml();

			if (! newData.equals(usedData)) {


				Log.i("Side9Pigen", "(Re)loading image:" + newData.url);

				URL imgUrl = new URL( newData.url );	        

				URLConnection conn = imgUrl.openConnection();
				conn.setConnectTimeout(2500);
				Bitmap image = BitmapFactory.decodeStream( conn.getInputStream() );

				usedData = newData; // if we made it to here without exceptions, save the new data
				usedBitmap = image;
				timestamp = System.currentTimeMillis();

			} // endif

		} catch (Exception e) {
			Log.e("Side9Pigen", "update failed", e);
		}

		setImage(context,appWidgetManager,appWidgetIds, usedBitmap);
		Log.i("Side9Pigen", "update completed");
	}


	//Called when the last widget is removed/disabled
	@Override
	public void onDisabled(Context context) {
		super.onDisabled(context);

		usedData = null; //free memory
		usedBitmap = null;
	}

}