// Author: Gockner, Simon
// Created: 2021-04-08
// Copyright(c) 2021 SimonG. All Rights Reserved.

using System.Collections.Generic;
using System.Linq;
using Lib.Audio.Factories;
using Lib.Audio.Interfaces;
using NAudio.CoreAudioApi;

namespace Lib.Audio
{
    public class ControllableCollector : IControllableCollector
    {
        private readonly IControllableFactory _controllableFactory;
        
        public ControllableCollector(IControllableFactory controllableFactory) => _controllableFactory = controllableFactory;

        public List<IControllable> Controllables => CreateControllables();
        private List<IControllable> CreateControllables()
        {
            MMDeviceEnumerator deviceEnumerator = new();
            MMDeviceCollection? audioDevices = deviceEnumerator.EnumerateAudioEndPoints(DataFlow.All, DeviceState.Active);

            return audioDevices.Select(a => _controllableFactory.Create(a.AudioSessionManager.AudioSessionControl)).ToList();
        }
    }
}