package org.r3pek.k9datakiller;

import java.util.List;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.preference.PreferenceManager;
import android.widget.Toast;

public class StatusChanger extends BroadcastReceiver {
	
    @Override
    public void onReceive(Context context, Intent intent) {
    	if (intent.getAction().equals(Constants.INTENT_K9DATAKILLER_CHANGESTATUS))
    		changeStatus(context);
    }
    
    private static boolean isReceiverAvailable(Context context, String action) {
        final PackageManager packageManager = context.getPackageManager();
        final Intent intent = new Intent(action);
        List<ResolveInfo> list = packageManager.queryBroadcastReceivers(intent, 0);
        return list.size() > 0;
    }
    
    private void changeStatus(Context context) {
    	/* Check if K-9 is installed */
    	if (!isReceiverAvailable(context, Constants.INTENT_K9_SERVICE)) {
    		Toast.makeText(context, context.getString(R.string.k9notinstalled), Toast.LENGTH_LONG).show();
    		return;
    	}
    	
    	/* Get status from preferences as K-9 doesn't support reading the status */
    	SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
    	boolean syncEnable = prefs.getBoolean(Constants.PREF_WIDGET_STATUS, true);

    	/* Ask K-9 to change the setting */
		Intent i = new Intent(Constants.INTENT_K9_SERVICE);
		i.putExtra(Constants.INTENT_K9_SERVICE_EXTRA, syncEnable ? "NEVER" : "WHEN_CHECKED");
		context.sendBroadcast(i);
		
		/* Update our preferences to reflect the new value */
		syncEnable = !syncEnable;
		Editor ed = prefs.edit();
		ed.putBoolean(Constants.PREF_WIDGET_STATUS, syncEnable);
		ed.commit();
		
		/* Notify our widget that the changed has been made */
        i = new Intent(Constants.INTENT_K9DATAKILLER_STATUSCHANGED);
        context.sendBroadcast(i);
		
        /* Tell the user about it */
		String status = syncEnable ? context.getString(R.string.enabled) : context.getString(R.string.disabled);
		Toast.makeText(context, context.getString(R.string.toast_text) + " " + status, Toast.LENGTH_LONG).show();
    }
 }