using System;

using FrostFS.Refs;
using FrostFS.SDK.Cryptography;

using Google.Protobuf;

using Microsoft.Extensions.Caching.Memory;

namespace FrostFS.SDK.Client.Mappers.GRPC;

public static class ContainerIdMapper
{
    private static readonly MemoryCacheEntryOptions _oneHourExpiration = new MemoryCacheEntryOptions()
       .SetSlidingExpiration(TimeSpan.FromHours(1))
       .SetSize(1);

    public static ContainerID ToMessage(this FrostFsContainerId model)
    {
        if (model is null)
        {
            throw new ArgumentNullException(nameof(model));
        }

        var containerId = model.GetValue() ?? throw new ArgumentNullException(nameof(model));

        if (!Caches.Containers.TryGetValue(containerId, out ContainerID? message))
        {
            message = new ContainerID
            {
                Value = ByteString.CopyFrom(Base58.Decode(containerId))
            };

            Caches.Containers.Set(containerId, message, _oneHourExpiration);
        }
        return message!;
    }

    public static FrostFsContainerId ToModel(this ContainerID message)
    {
        if (message is null)
        {
            throw new ArgumentNullException(nameof(message));
        }

        return new FrostFsContainerId(Base58.Encode(message.Value.Span));
    }
}