#nullable enable

using System.Threading.Tasks;

namespace Kruzya.TelegramBot.Core.Option;

/// <summary>
/// Implements an interaction with storage for options.
/// </summary>
public interface IOptionStorageAdapter
{
    /// <summary>
    /// Loads a saved value (if exists) from storage.
    /// </summary>
    /// <param name="key"></param>
    /// <returns></returns>
    public Task<byte[]?> LoadValueAsync(IOptionKey key);

    /// <summary>
    /// Saves a passed value to storage.
    /// </summary>
    /// <param name="key">The unique chat key</param>
    /// <param name="value">The serialized value for saving</param>
    /// <returns></returns>
    public Task SaveValueAsync(IOptionKey key, byte[] value);
}