namespace Common.Services;

public enum ToastLevel
{
    Info,
    Success,
    Warning,
    Error
}

public class ToastMessage
{
    public Guid Id { get; } = Guid.NewGuid();
    public string Message { get; set; } = string.Empty;
    public ToastLevel Level { get; set; } = ToastLevel.Info;
    public DateTime Created { get; } = DateTime.Now;
}

public interface IToastService
{
    event Action OnChange;
    List<ToastMessage> Toasts { get; }
    void ShowToast(string message, ToastLevel level = ToastLevel.Info);
    void RemoveToast(Guid id);
}

public class ToastService : IToastService
{
    public event Action? OnChange;
    public List<ToastMessage> Toasts { get; } = new();

    public void ShowToast(string message, ToastLevel level = ToastLevel.Info)
    {
        var toast = new ToastMessage { Message = message, Level = level };
        Toasts.Add(toast);
        NotifyStateChanged();

        // Auto remove after 5 seconds
        _ = RemoveAfterDelay(toast.Id);
    }

    public void RemoveToast(Guid id)
    {
        var toast = Toasts.FirstOrDefault(t => t.Id == id);
        if (toast != null)
        {
            Toasts.Remove(toast);
            NotifyStateChanged();
        }
    }

    private async Task RemoveAfterDelay(Guid id)
    {
        await Task.Delay(5000);
        RemoveToast(id);
    }

    private void NotifyStateChanged() => OnChange?.Invoke();
}