package org.apache.cordova.USBPrinter;

import java.util.ArrayList;
import java.util.List;

import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import android.util.Log;
import android.widget.Toast;

public class UsbPrinterUtil {

	private static final String TAG = "UsbPrinter";

	private final Context mContext;
	private final UsbManager mUsbManager;
	private volatile List<UsbDevice> mUsbPrinterList = null;

	private static String ACTION_USB_PERMISSION = "com.posin.usbdevice.USB_PERMISSION";

	public static interface OnUsbPermissionCallback {
		public void onUsbPermissionEvent(UsbDevice dev, boolean granted);
	}

	private OnUsbPermissionCallback onPermissionCallback = null;

	final BroadcastReceiver mReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
			Log.d(TAG, intent.getAction());
			if (ACTION_USB_PERMISSION.equals(intent.getAction())) {
				UsbDevice device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
				if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
					if (onPermissionCallback != null)
						onPermissionCallback.onUsbPermissionEvent(device, true);
				} else {
					if (onPermissionCallback != null)
						onPermissionCallback.onUsbPermissionEvent(device, false);
				}
				context.unregisterReceiver(this);
			}
		}
	};

	public UsbPrinterUtil(Context context) {
		mContext = context;
		mUsbManager = (UsbManager) context.getSystemService(Context.USB_SERVICE);
	}

	public List<UsbDevice> getUsbPrinterList() {
		// if (android.os.Build.MODEL.substring(0, 3).equalsIgnoreCase("TPS")) {
		if (mUsbPrinterList == null) {
			mUsbPrinterList = findAllUsbPrinter();
		}
		return mUsbPrinterList;
		// } else {
		// Log.e("_ERROR",
		// "ERROR--->Device is not support!  This Demo just developer for TPS device");
		// return null;
		// }
	}

	public boolean requestPermission(UsbDevice usbDevice, OnUsbPermissionCallback callback) {
		if (!mUsbManager.hasPermission(usbDevice)) {
			onPermissionCallback = callback;
			IntentFilter ifilter = new IntentFilter(ACTION_USB_PERMISSION);
			mContext.registerReceiver(mReceiver, ifilter);
			PendingIntent pi = PendingIntent.getBroadcast(mContext, 0, new Intent(ACTION_USB_PERMISSION), 0);
			mUsbManager.requestPermission(usbDevice, pi);
			return false;
		} else {
			return true;
		}
	}

	private List<UsbDevice> findAllUsbPrinter() {
		final List<UsbDevice> result = new ArrayList<UsbDevice>();

		Log.d(TAG, "find usb printer...");
		for (final UsbDevice usbDevice : mUsbManager.getDeviceList().values()) {
			Log.d(TAG, String.format("usb %04X:%04X : device_id=%d, device_name=%s", usbDevice.getVendorId(), usbDevice.getProductId(), usbDevice.getDeviceId(), usbDevice.getDeviceName()));
			if (isUsbPrinterDevice(usbDevice)) {
				Log.d(TAG, String.format("usb printer %04X:%04X : device_id=%d, device_name=%s", usbDevice.getVendorId(), usbDevice.getProductId(), usbDevice.getDeviceId(), usbDevice.getDeviceName()));
				result.add(usbDevice);
			}else{
				Log.d(TAG, String.format("usb printer %04X:%04X : device_id=%d, device_name=%s", usbDevice.getVendorId(), usbDevice.getProductId(), usbDevice.getDeviceId(), usbDevice.getDeviceName()));
			}
		}

		return result;
	}

	public static boolean isUsbPrinterDevice(final UsbDevice usbDevice) {
		final int vid = usbDevice.getVendorId();
		final int pid = usbDevice.getProductId();
		return (vid == 0x6868 && pid == 0x0200) ||
				(vid == 5455 && pid == 5455) ||
				(vid == 26728 && pid == 1280) ||
				(vid == 26728 && pid == 1536) ||
				(vid == 34918) || (vid == 1137) ||
				(vid == 1659) ||
				(vid == 1137) ||
				(vid == 1155) ||
				(vid == 17224) ||
				(vid == 7358) ||
				(vid == 6790) ||
				(vid == 4070);
	}

}