using System;
using System.Collections.ObjectModel;
using System.Security.Cryptography;
using System.Threading;

using FrostFS.SDK.Cryptography;

using Google.Protobuf;

using Grpc.Core.Interceptors;

namespace FrostFS.SDK.Client;

public class CallContext()
{
    private ByteString? publicKeyCache;

    internal Action<Exception>? PoolErrorHandler { get; set; }

    public ECDsa? Key { get; set; }

    public FrostFsOwner? OwnerId { get; set; }

    public FrostFsVersion? Version { get; set; }

    public CancellationToken CancellationToken { get; set; }

    public TimeSpan Timeout { get; set; }

    public DateTime? Deadline => Timeout.Ticks > 0 ? DateTime.UtcNow.Add(Timeout) : null;

    public Action<CallStatistics>? Callback { get; set; }

    public Collection<Interceptor> Interceptors { get; } = [];

    public ByteString? GetPublicKeyCache()
    {
        if (publicKeyCache == null && Key != null)
        {
            publicKeyCache = ByteString.CopyFrom(Key.PublicKey());
        }

        return publicKeyCache;
    }
}