using System;
using System.Collections.Generic;

namespace Notes.ViewModels;

public sealed class Services:IServices
{
    private readonly Dictionary<Type, object?> map = new Dictionary<Type, object?>();
    public void Register<T>(T t)
    {
        this.map.Add(typeof(T), t);
    }

    public T? Get<T>()
    {
        this.map.TryGetValue(typeof(T), out var t);
        return (T?)t;
    }

    public T GetSafeAs<T>()
    {
        T? foo = this.Get<T?>();
        if (foo is { } t)
            return t;
        throw new InvalidOperationException($"Not find type '{typeof(T)}'");
    }
}