using System.Collections.Generic;

namespace Engine.Core.Config;

public interface IConfiguration
{
    static IConfiguration System { get; set; } = new SystemConfiguration();
    static IConfiguration Shared { get; set; } = new BasicConfiguration();

    Event<IConfiguration, ConfigUpdateArguments> OnAdded { get; }
    Event<IConfiguration, ConfigUpdateArguments> OnSet { get; }
    Event<IConfiguration, ConfigUpdateArguments> OnRemoved { get; }

    IReadOnlyDictionary<string, object?> Values { get; }

    bool Has(string key);
    object? Get(string key);
    T? Get<T>(string key, T? defaultValue = default);
    void Set<T>(string key, T value);
    void Remove<T>(string key);

    readonly record struct ConfigUpdateArguments(string Key);
}