136 lines
4.2 KiB
C#
136 lines
4.2 KiB
C#
using MudBlazor;
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namespace PlaylistShared.Pwa.Services;
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public class AudioPlayerService : IAudioPlayerService
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{
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private readonly TokenStorage _tokenStorage;
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private readonly ISnackbar _snackbar;
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private string? _currentTrackId;
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private bool _isPlaying;
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private double _currentVolume = 70;
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private double _currentProgress;
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private string _currentTime = "0:00";
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private string _totalTime = "0:00";
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public string? CurrentTrackId => _currentTrackId;
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public bool IsPlaying => _isPlaying;
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public double CurrentVolume
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{
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get => _currentVolume;
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set
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{
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_currentVolume = value;
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OnStateChanged?.Invoke();
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}
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}
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public double CurrentProgress => _currentProgress;
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public string CurrentTime => _currentTime;
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public string TotalTime => _totalTime;
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public event Action? OnStateChanged;
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public AudioPlayerService(TokenStorage tokenStorage, ISnackbar snackbar)
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{
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_tokenStorage = tokenStorage;
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_snackbar = snackbar;
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}
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// Внешние команды (вызываются из компонентов)
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public async Task LoadAndPlayAsync(string trackId, string? accessToken = null, string? sharedPlaylistId = null)
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{
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// Если accessToken не передан, пытаемся получить его из хранилища
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if (string.IsNullOrWhiteSpace(accessToken))
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{
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var tokens = await _tokenStorage.GetTokensAsync();
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accessToken = tokens.token;
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}
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// Проверяем, есть ли чем авторизоваться
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if (string.IsNullOrWhiteSpace(accessToken) && string.IsNullOrWhiteSpace(sharedPlaylistId))
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{
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_snackbar.Add("Не удалось воспроизвести трек: отсутствует токен авторизации или идентификатор расшаренного плейлиста.", Severity.Error);
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return;
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}
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_currentTrackId = trackId;
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_isPlaying = true;
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OnStateChanged?.Invoke();
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OnLoadAndPlayRequested?.Invoke(trackId, accessToken, sharedPlaylistId);
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}
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public async Task PlayAsync()
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{
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_isPlaying = true;
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OnStateChanged?.Invoke();
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OnPlayRequested?.Invoke();
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}
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public async Task PauseAsync()
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{
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_isPlaying = false;
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OnStateChanged?.Invoke();
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OnPauseRequested?.Invoke();
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}
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public async Task StopAsync()
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{
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_isPlaying = false;
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_currentTrackId = null;
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_currentProgress = 0;
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_currentTime = "0:00";
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OnStateChanged?.Invoke();
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OnStopRequested?.Invoke();
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}
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public async Task SeekToAsync(double percent)
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{
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OnSeekRequested?.Invoke(percent);
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}
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public async Task SetVolumeAsync(double volume)
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{
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_currentVolume = volume;
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OnStateChanged?.Invoke();
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OnVolumeChangeRequested?.Invoke(volume);
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}
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// События для связи с реальным AudioPlayer компонентом
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public event Func<string, string?, string?, Task>? OnLoadAndPlayRequested;
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public event Func<Task>? OnPlayRequested;
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public event Func<Task>? OnPauseRequested;
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public event Func<Task>? OnStopRequested;
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public event Func<double, Task>? OnSeekRequested;
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public event Func<double, Task>? OnVolumeChangeRequested;
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// Внутренние методы для обновления состояния из AudioPlayer
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public void SetPlayingState(bool isPlaying)
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{
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_isPlaying = isPlaying;
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OnStateChanged?.Invoke();
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}
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public void SetCurrentTrack(string? trackId)
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{
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_currentTrackId = trackId;
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OnStateChanged?.Invoke();
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}
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public void UpdateProgress(double progress, string currentTime, string totalTime)
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{
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_currentProgress = progress;
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_currentTime = currentTime;
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_totalTime = totalTime;
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OnStateChanged?.Invoke();
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}
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public void NotifyTrackEnded()
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{
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_isPlaying = false;
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_currentTrackId = null;
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_currentProgress = 0;
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_currentTime = "0:00";
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OnStateChanged?.Invoke();
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}
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} |