/*
 * 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.BluetoothA2dpSink;
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;

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

public class BluetoothA2dpSinkFacade extends RpcReceiver {
    static final ParcelUuid[] SOURCE_UUIDS = {
        BluetoothUuid.A2DP_SOURCE,
    };

    private final Service mService;
    private final BluetoothAdapter mBluetoothAdapter;

    private static BluetoothA2dpSink sA2dpSinkProfile = null;

    public BluetoothA2dpSinkFacade(FacadeManager manager) {
        super(manager);
        mService = manager.getService();
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        mBluetoothAdapter.getProfileProxy(mService, new A2dpSinkServiceListener(),
        BluetoothProfile.A2DP_SINK);
    }

    class A2dpSinkServiceListener implements BluetoothProfile.ServiceListener {
        @Override
        public void onServiceConnected(int profile, BluetoothProfile proxy) {
            sA2dpSinkProfile = (BluetoothA2dpSink) proxy;
        }

        @Override
        public void onServiceDisconnected(int profile) {
            sA2dpSinkProfile = null;
        }
    }

    /**
     * Connect A2dp Sink profile.
     * @param device - the Bluetooth Device object to connect.
     * @return if the A2dp Sink Profile connection was successful or not.
     */
    public Boolean a2dpSinkConnect(BluetoothDevice device) {
        if (sA2dpSinkProfile == null) return false;
        return sA2dpSinkProfile.connect(device);
    }

    /**
     * Disconnect A2dp Sink profile.
     * @param device - the Bluetooth Device object to connect.
     * @return if the A2dp Sink Profile disconnection was successful or not.
     */
    public Boolean a2dpSinkDisconnect(BluetoothDevice device) {
        if (sA2dpSinkProfile == null) return false;
        return sA2dpSinkProfile.disconnect(device);
    }

    /**
     * Set priority of the profile.
     * @param deviceStr - Mac address of a Bluetooth device.
     * @param priority - Priority that needs to be set.
     */
    @Rpc(description = "Set priority of the profile")
    public void bluetoothA2dpSinkSetPriority(
            @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 (sA2dpSinkProfile == null) return;
        BluetoothDevice device =
                BluetoothFacade.getDevice(
                        mBluetoothAdapter.getBondedDevices(), deviceStr);
        Log.d("Changing priority of device "
                + device.getAlias() + " p: " + priority);
        sA2dpSinkProfile.setConnectionPolicy(device, priority);
    }

    /**
     * Get priority of the profile.
      * @param deviceStr - Mac address of a Bluetooth device.
      * @return priority of the device.
     */
    @Rpc(description = "get priority of the profile")
    public Integer bluetoothA2dpSinkGetPriority(
            @RpcParameter(name = "device", description = "Mac address of a BT device.")
                String deviceStr)
            throws Exception {
        if (sA2dpSinkProfile == null) return BluetoothProfile.CONNECTION_POLICY_UNKNOWN;
        BluetoothDevice device =
                BluetoothFacade.getDevice(
                mBluetoothAdapter.getBondedDevices(), deviceStr);
        return sA2dpSinkProfile.getConnectionPolicy(device);
    }

    /**
     * Is A2dpSink profile ready.
     * @return if the Profile is ready or not.
     */
    @Rpc(description = "Is A2dpSink profile ready.")
    public Boolean bluetoothA2dpSinkIsReady() {
        return sA2dpSinkProfile != null;
    }

    /**
     * Connect to an A2DP Sink device.
     * @param deviceStr - Name or MAC address of a bluetooth device.
     * @return connection to A2DP was successful.
     */
    @Rpc(description = "Connect to an A2DP Sink device.")
    public Boolean bluetoothA2dpSinkConnect(
            @RpcParameter(name = "device", description =
                "Name or MAC address of a bluetooth device.") String deviceStr)
            throws Exception {
        if (sA2dpSinkProfile == null) return false;
        BluetoothDevice device =
                BluetoothFacade.getDevice(
                BluetoothFacade.DiscoveredDevices, deviceStr);
        Log.d("Connecting to device " + device.getAlias());
        return a2dpSinkConnect(device);
    }

    /**
     * Disconnect to an A2DP Sink device.
     * @param deviceStr - Name or MAC address of a bluetooth device.
     * @return disconnection to A2DP was successful or not.
     */
    @Rpc(description = "Disconnect an A2DP Sink device.")
    public Boolean bluetoothA2dpSinkDisconnect(
            @RpcParameter(name = "device", description = "Name or MAC address of a device.")
                String deviceStr) {
        if (sA2dpSinkProfile == null) return false;
        Log.d("Connected devices: " + sA2dpSinkProfile.getConnectedDevices());
        BluetoothDevice device = null;
        try {
            device = BluetoothFacade.getDevice(
                    sA2dpSinkProfile.getConnectedDevices(), deviceStr);
            return a2dpSinkDisconnect(device);
        } catch (Exception e) {
            // Do nothing here. Since it is disconnect this function should force shutdown anyways.
            Log.d("bluetoothA2dpSinkDisconnect error while getDevice " + e);
        }
        return false;
    }

    /**
     * Get all the devices connected through A2DP Sink.
     * @return List of all the devices connected through A2dp Sink.
     */
    @Rpc(description = "Get all the devices connected through A2DP Sink.")
    public List<BluetoothDevice> bluetoothA2dpSinkGetConnectedDevices() {
        if (sA2dpSinkProfile == null) return new ArrayList<BluetoothDevice>();
        return sA2dpSinkProfile.getConnectedDevices();
    }

    /**
     * Get the connection status of a device.
     * @param deviceID - Name or MAC address of a bluetooth device.
     * @return connection status of the device.
     */
    @Rpc(description = "Get the connection status of a device.")
    public Integer bluetoothA2dpSinkGetConnectionStatus(
            @RpcParameter(name = "deviceID",
                description = "Name or MAC address of a bluetooth device.")
                String deviceID) {
        if (sA2dpSinkProfile == null) {
            return BluetoothProfile.STATE_DISCONNECTED;
        }
        List<BluetoothDevice> deviceList = sA2dpSinkProfile.getConnectedDevices();
        BluetoothDevice device;
        try {
            device = BluetoothFacade.getDevice(deviceList, deviceID);
        } catch (Exception e) {
            Log.e(e);
            return BluetoothProfile.STATE_DISCONNECTED;
        }
        return sA2dpSinkProfile.getConnectionState(device);
    }

    @Override
    public void shutdown() {
    }
}