package fr.drangies.cordova.serial;

import org.apache.cordova.CallbackContext;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.hardware.usb.UsbManager;
import android.util.Log;
import org.apache.cordova.PluginResult;

/**
 * Custom {@link BroadcastReceiver} that can talk through a cordova {@link CallbackContext}
 * @author Xavier Seignard <xavier.seignard@gmail.com>
 */
public class UsbBroadcastReceiver extends BroadcastReceiver {
	// logging tag
	private final String TAG = UsbBroadcastReceiver.class.getSimpleName();
	// usb permission tag name
// 	private static final String USB_PERMISSION = "cn.wch.wchusbdriver.USB_PERMISSION";
	public static final String USB_PERMISSION ="fr.drangies.cordova.serial.USB_PERMISSION";
	// cordova callback context to notify the success/error to the cordova app
	private CallbackContext callbackContext;
	// cordova activity to use it to unregister this broadcast receiver
	private Activity activity;
	
	/**
	 * Custom broadcast receiver that will handle the cordova callback context
	 * @param callbackContext
	 * @param activity
	 */
	public UsbBroadcastReceiver(CallbackContext callbackContext, Activity activity) {
		this.callbackContext = callbackContext;
		this.activity = activity;
	}

	
	/**
	 * Handle permission answer
	 * @param context
	 * @param intent
	 * @see android.content.BroadcastReceiver#onReceive(android.content.Context, android.content.Intent)
	 */
	@Override
	public void onReceive(Context context, Intent intent) {
		String action = intent.getAction();
		if (USB_PERMISSION.equals(action)) {
			// deal with the user answer about the permission
			if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
				Log.d(TAG, "Permission to connect to the device was accepted!");
				callbackContext.success("Permission to connect to the device was accepted!");
			} 
			else {
				Log.d(TAG, "Permission to connect to the device was denied!");
				callbackContext.error("Permission to connect to the device was denied!");
			}
			// unregister the broadcast receiver since it's no longer needed
			activity.unregisterReceiver(this);
		} else if (action.equals(UsbManager.ACTION_USB_DEVICE_DETACHED)) {
			PluginResult result = new PluginResult(PluginResult.Status.OK);
			result.setKeepCallback(true);
			callbackContext.sendPluginResult(result);
			//activity.unregisterReceiver(this);
		} else if (action.equals(UsbManager.ACTION_USB_DEVICE_ATTACHED)) {
			PluginResult result = new PluginResult(PluginResult.Status.OK);
			result.setKeepCallback(true);
			callbackContext.sendPluginResult(result);
			//activity.unregisterReceiver(this);
		}
	}	
}