/*
 * Copyright (C) 2017 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.googlecode.android_scripting.facade.bluetooth;

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

import android.app.Service;
import android.bluetooth.BluetoothPbapClient;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothProfile;
import android.bluetooth.BluetoothUuid;
import android.os.ParcelUuid;

import com.googlecode.android_scripting.Log;
import com.googlecode.android_scripting.facade.FacadeManager;
import com.googlecode.android_scripting.jsonrpc.RpcReceiver;
import com.googlecode.android_scripting.rpc.Rpc;
import com.googlecode.android_scripting.rpc.RpcParameter;

public class BluetoothPbapClientFacade extends RpcReceiver {
  static final ParcelUuid[] UUIDS = {
    BluetoothUuid.PBAP_PSE,
  };

  private final Service mService;
  private final BluetoothAdapter mBluetoothAdapter;

  private static boolean sIsPbapClientReady = false;
  private static BluetoothPbapClient sPbapClientProfile = null;

  public BluetoothPbapClientFacade(FacadeManager manager) {
    super(manager);
    mService = manager.getService();
    mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    mBluetoothAdapter.getProfileProxy(mService, new PbapClientServiceListener(),
        BluetoothProfile.PBAP_CLIENT);
  }

  class PbapClientServiceListener implements BluetoothProfile.ServiceListener {
    @Override
    public void onServiceConnected(int profile, BluetoothProfile proxy) {
      sPbapClientProfile = (BluetoothPbapClient) proxy;
      sIsPbapClientReady = true;
    }

    @Override
    public void onServiceDisconnected(int profile) {
      sIsPbapClientReady = false;
    }
  }

  public Boolean pbapClientConnect(BluetoothDevice device) {
    if (sPbapClientProfile == null) return false;
    return sPbapClientProfile.connect(device);
  }

  public Boolean pbapClientDisconnect(BluetoothDevice device) {
    if (sPbapClientProfile == null) return false;
    return sPbapClientProfile.disconnect(device);
  }

  @Rpc(description = "Is PbapClient profile ready.")
  public Boolean bluetoothPbapClientIsReady() {
    return sIsPbapClientReady;
  }

  @Rpc(description = "Set priority of the profile")
  public void bluetoothPbapClientSetPriority(
      @RpcParameter(name = "device", description = "Mac address of a BT device.")
      String deviceStr,
      @RpcParameter(name = "priority", description = "Priority that needs to be set.")
      Integer priority)
      throws Exception {
    if (sPbapClientProfile == null) return;
    BluetoothDevice device =
        BluetoothFacade.getDevice(mBluetoothAdapter.getBondedDevices(), deviceStr);
    Log.d("Changing priority of device " + device.getAliasName() + " p: " + priority);
    sPbapClientProfile.setPriority(device, priority);
  }

  @Rpc(description = "Get priority of the profile")
  public Integer bluetoothPbapClientGetPriority(
      @RpcParameter(name = "device", description = "Mac address of a BT device.")
      String deviceStr)
      throws Exception {
    if (sPbapClientProfile == null) return BluetoothProfile.PRIORITY_UNDEFINED;
    BluetoothDevice device =
        BluetoothFacade.getDevice(mBluetoothAdapter.getBondedDevices(), deviceStr);
    return sPbapClientProfile.getPriority(device);
  }

  @Rpc(description = "Connect to an PBAP Client device.")
  public Boolean bluetoothPbapClientConnect(
      @RpcParameter(name = "device", description = "Name or MAC address of a bluetooth device.")
      String deviceStr)
      throws Exception {
    if (sPbapClientProfile == null) return false;
    try {
      BluetoothDevice device =
          BluetoothFacade.getDevice(mBluetoothAdapter.getBondedDevices(), deviceStr);
      Log.d("Connecting to device " + device.getAliasName());
      return pbapClientConnect(device);
    } catch (Exception e) {
        Log.e("bluetoothPbapClientConnect failed on getDevice " + deviceStr + " with " + e);
        return false;
    }
  }

  @Rpc(description = "Disconnect an PBAP Client device.")
  public Boolean bluetoothPbapClientDisconnect(
      @RpcParameter(name = "device", description = "Name or MAC address of a device.")
      String deviceStr) {
    if (sPbapClientProfile == null) return false;
    Log.d("Connected devices: " + sPbapClientProfile.getConnectedDevices());
    try {
        BluetoothDevice device =
            BluetoothFacade.getDevice(sPbapClientProfile.getConnectedDevices(), deviceStr);
        return pbapClientDisconnect(device);
    } catch (Exception e) {
        // Do nothing since it is disconnect and the above call should force disconnect.
        Log.e("bluetoothPbapClientConnect getDevice failed " + e);
    }
    return false;
  }

  @Rpc(description = "Get all the devices connected through PBAP Client.")
  public List<BluetoothDevice> bluetoothPbapClientGetConnectedDevices() {
    if (sPbapClientProfile == null) return new ArrayList<BluetoothDevice>();
    return sPbapClientProfile.getConnectedDevices();
  }

  @Rpc(description = "Get the connection status of a device.")
  public Integer bluetoothPbapClientGetConnectionStatus(
          @RpcParameter(name = "deviceID",
                        description = "Name or MAC address of a bluetooth device.")
          String deviceID) {
      if (sPbapClientProfile == null) {
          return BluetoothProfile.STATE_DISCONNECTED;
      }
      List<BluetoothDevice> deviceList = sPbapClientProfile.getConnectedDevices();
      BluetoothDevice device;
      try {
          device = BluetoothFacade.getDevice(deviceList, deviceID);
      } catch (Exception e) {
          Log.e(e);
          return BluetoothProfile.STATE_DISCONNECTED;
      }
      return sPbapClientProfile.getConnectionState(device);
  }

  @Override
  public void shutdown() {
  }
}