using System;
using System.Collections.ObjectModel;
using System.Linq;
using System.Windows.Input;
using Avalonia.Threading;
using NAudio.CoreAudioApi;
using NAudio.Wave;
using ReactiveUI;
using SoundTester.Service;
using SoundTesting;
using Splat;

namespace SoundTester.ViewModels;

public class VoiceTrackerViewModel : ViewModelBase
{
    private string _recButtonContent = "Начать проверку";
    private string _selectedDevice;
    private int _selectedDeviceIndex;
    private ObservableCollection<string> _devices;
    private float _volume = -96;
    private bool _isMonitoring = false;
    private bool _isEnabled = false;
    private WasapiCapture _wasapiCapture;
    private WasapiOut _wasapiOut;
    private BufferedWaveProvider _bufferedWaveProvider;
    private DevicesEnumerator _devicesEnumerator;
    
    
    public string SelectedDevice
    {
        get => _selectedDevice;
        set => this.RaiseAndSetIfChanged(ref _selectedDevice, value);
    }

    public int SelectedDeviceIndex
    {
        get => _selectedDeviceIndex;
        set => this.RaiseAndSetIfChanged(ref _selectedDeviceIndex, value);
    }

    public ObservableCollection<string>? Devices
    {
        get => _devices;
        set => this.RaiseAndSetIfChanged(ref _devices, value);
    }

    public float Volume
    {
        get => _volume;
        set => this.RaiseAndSetIfChanged(ref _volume, value);
    }

    public bool IsEnabled
    {
        get => _isEnabled;
        set => this.RaiseAndSetIfChanged(ref _isEnabled, value);
    }

    public string RecButtonContent
    {
        get => _recButtonContent;
        set => this.RaiseAndSetIfChanged(ref _recButtonContent, value);
    }

    public ICommand RecordCommand { get; }
    
    public VoiceTrackerViewModel(DevicesEnumerator? devicesEnumerator = null) //Конструктор
    { 
       ;
        
        _devicesEnumerator = devicesEnumerator ?? Locator.Current.GetService<DevicesEnumerator>()!;

        Devices = _devicesEnumerator!.DevicesUpdater.InputDevices;
        SelectedDevice = Devices.FirstOrDefault();
        VoiceTrackerService voiceTrackerService = new VoiceTrackerService(SelectedDevice);
        voiceTrackerService.DecibelLevelEvent += DecibelTracker;
        RecordCommand = ReactiveCommand.Create(() => voiceTrackerService.Record());
        this.WhenAnyValue(x => x.Devices, x => x.SelectedDevice)
            .WhereNotNull()
            .Subscribe(x =>
            {
                Devices = _devicesEnumerator.DevicesUpdater.InputDevices;
                IsEnabled = SelectedDeviceIndex == -1 || Devices.Count == 0 ? false : true;
            });
        
       
    }

    private void DecibelTracker(float level)
    {
        RefreshProgressBar(level);
    }
    
   

    private void RefreshProgressBar(float percentage)
    {
        Volume = percentage;
    }
}