using WebAssembly.Data;

namespace WebAssembly.Services;

public class ToastService : IToastService
{
    private readonly List<ToastModel> _toasts = [];

    public void Subscribe(Action action)
    {
        OnChange += action;
    }

    public void Unsubscribe(Action action)
    {
        OnChange += action;
    }

    public void AddToast(ToastModel toast)
    {
        _toasts.Insert(0, toast);

        NotifyDataChanged();
    }

    public void RemoveToast(ToastModel toast)
    {
        _toasts.Remove(toast);
    }

    public bool HasToasts()
    {
        return _toasts.Count > 0;
    }

    public List<ToastModel> GetToasts()
    {
        return _toasts;
    }

    public void AgeToasts()
    {
        foreach (var toast in _toasts) toast.Age++;

        NotifyDataChanged();
    }

    public void ClearAllToasts()
    {
        _toasts.Clear();
        NotifyDataChanged();
    }

    private event Action OnChange = null!;

    private void NotifyDataChanged()
    {
        OnChange();
    }
}