/*
 * 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 android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothMap;
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;

import java.util.List;

public class BluetoothMapFacade extends RpcReceiver {
    static final ParcelUuid[] MAP_UUIDS = {
        BluetoothUuid.MAP,
        BluetoothUuid.MNS,
        BluetoothUuid.MAS,
    };
    private final Service mService;
    private final BluetoothAdapter mBluetoothAdapter;

    private static boolean sIsMapReady = false;
    private static BluetoothMap sMapProfile = null;

    public BluetoothMapFacade(FacadeManager manager) {
        super(manager);
        mService = manager.getService();
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        mBluetoothAdapter.getProfileProxy(mService, new MapServiceListener(),
        BluetoothProfile.MAP);
    }

    class MapServiceListener implements BluetoothProfile.ServiceListener {
        @Override
        public void onServiceConnected(int profile, BluetoothProfile proxy) {
            sMapProfile = (BluetoothMap) proxy;
            sIsMapReady = true;
        }

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

    /**
     * Disconnect Map Profile.
     * @param device - the BluetoothDevice object to connect to.
     * @return if the disconnection was successfull or not.
     */
    public Boolean mapDisconnect(BluetoothDevice device) {
        if (sMapProfile.getConnectionPolicy(device) > BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
            sMapProfile.setConnectionPolicy(device, BluetoothProfile.CONNECTION_POLICY_ALLOWED);
        }
        return sMapProfile.disconnect(device);
    }

    /**
     * Is Map profile ready.
     * @return if Map profile is ready or not.
     */
    @Rpc(description = "Is Map profile ready.")
    public Boolean bluetoothMapIsReady() {
    return sIsMapReady;
    }

    /**
     * Disconnect an MAP device.
     * @param deviceID - Name or MAC address of a bluetooth device.
     * @return True if the disconnection was successful; otherwise False.
     */
    @Rpc(description = "Disconnect an MAP device.")
    public Boolean bluetoothMapDisconnect(
            @RpcParameter(name = "deviceID",
                description = "Name or MAC address of a device.")
                    String deviceID) throws Exception {
        if (sMapProfile == null) return false;
        List<BluetoothDevice> connectedMapDevices =
                sMapProfile.getConnectedDevices();
        Log.d("Connected map devices: " + connectedMapDevices);
        BluetoothDevice mDevice = BluetoothFacade.getDevice(connectedMapDevices, deviceID);
        if (!connectedMapDevices.isEmpty()
                && connectedMapDevices.get(0).equals(mDevice)) {
            if (sMapProfile.getConnectionPolicy(mDevice)
                    > BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
                sMapProfile.setConnectionPolicy(
                        mDevice, BluetoothProfile.CONNECTION_POLICY_ALLOWED);
            }
            return sMapProfile.disconnect(mDevice);
        } else {
            return false;
        }
    }

    /**
     * Get all the devices connected through MAP.
     * @return List of all the devices connected through MAP.
     */
    @Rpc(description = "Get all the devices connected through MAP.")
    public List<BluetoothDevice> bluetoothMapGetConnectedDevices() {
        if (!sIsMapReady) return null;
        return sMapProfile.getDevicesMatchingConnectionStates(
                new int[] {BluetoothProfile.STATE_CONNECTED,
                    BluetoothProfile.STATE_CONNECTING,
                    BluetoothProfile.STATE_DISCONNECTING});
    }

    /**
     * Get the currently connected remote Bluetooth device (PCE).
     * @return remote Bluetooth device which is currently conencted.
     */
    @Rpc(description =
            "Get the currently connected remote Bluetooth device (PCE).")
    public BluetoothDevice bluetoothMapGetClient() {
        if (sMapProfile == null) return null;
        return sMapProfile.getClient();
    }

    @Override
    public void shutdown() {
    }
}