/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.settings.bluetooth;

import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.os.UserHandle;

/**
 * BluetoothPairingRequest is a receiver for any Bluetooth pairing request. It
 * checks if the Bluetooth Settings is currently visible and brings up the PIN, the passkey or a
 * confirmation entry dialog. Otherwise it starts the BluetoothPairingService which
 * starts a notification in the status bar that can be clicked to bring up the same dialog.
 */
public final class BluetoothPairingRequest extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (action == null || !action.equals(BluetoothDevice.ACTION_PAIRING_REQUEST)) {
            return;
        }

        PowerManager powerManager = context.getSystemService(PowerManager.class);
        BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        int pairingVariant = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
                BluetoothDevice.ERROR);
        String deviceAddress = device != null ? device.getAddress() : null;
        String deviceName = device != null ? device.getName() : null;
        boolean shouldShowDialog = LocalBluetoothPreferences.shouldShowDialogInForeground(
                context, deviceAddress, deviceName);

        // Skips consent pairing dialog if the device was recently associated with CDM
        if (pairingVariant == BluetoothDevice.PAIRING_VARIANT_CONSENT
                && device.canBondWithoutDialog()) {
            device.setPairingConfirmation(true);
        } else if (powerManager.isInteractive() && shouldShowDialog) {
            // Since the screen is on and the BT-related activity is in the foreground,
            // just open the dialog
            // convert broadcast intent into activity intent (same action string)
            Intent pairingIntent = BluetoothPairingService.getPairingDialogIntent(context, intent,
                    BluetoothDevice.EXTRA_PAIRING_INITIATOR_FOREGROUND);

            context.startActivityAsUser(pairingIntent, UserHandle.CURRENT);
        } else {
            // Put up a notification that leads to the dialog
            intent.setClass(context, BluetoothPairingService.class);
            intent.setAction(BluetoothDevice.ACTION_PAIRING_REQUEST);
            context.startServiceAsUser(intent, UserHandle.CURRENT);
        }
    }
}