package dk.thoerup.side9;

import java.io.IOException;
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;
	
	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(Side9Xml.BASEURL));
            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.e("Side9Pigen", "onUpdate:");
		
		ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (connMgr.getBackgroundDataSetting() == false)
		{
			Log.i("Side9Pigen", "background data disabled");
			return;
		}
		
        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();
		        Bitmap image = BitmapFactory.decodeStream( conn.getInputStream() );
		        
		        setImage(context,appWidgetManager,appWidgetIds, image);
		        
		        usedData = newData; // if we made it to here without exceptions, save the new data
		        
        	} // endif

        	
        } catch (Exception e) {
        	Log.e("Side9Pigen", "update failed", e);
        	
        	if (usedData == null) {
        		setImage(context,appWidgetManager,appWidgetIds, null);
        	}
        }
	}

	
	//Called when the last widget is removed/disabled
	@Override
	public void onDisabled(Context context) {
		super.onDisabled(context);
		
		usedData = null; //free memory
	}

}