using System.Net;

namespace CommonwealthOnline.Server;

internal enum SendOutcome { Sent, Dropped, Backpressure, NotConnected, TooLarge, Error }

internal interface IGameConnection : IAsyncDisposable
{
    string ConnectionKey { get; }
    string TransportName { get; }
    IPEndPoint RemoteEndpoint { get; }
    bool IsClosed { get; }
    ValueTask<SendOutcome> SendAsync(EncodedPacket packet, CancellationToken cancellationToken = default);
    ValueTask DisconnectAsync(int reason, string debug);
}

internal interface IServerIngress
{
    Task<bool> AcceptConnectionAsync(IGameConnection connection, CancellationToken cancellationToken);
    Task HandleMessageAsync(IGameConnection connection, ReadOnlyMemory<byte> payload, CancellationToken cancellationToken);
    Task HandleConnectionClosedAsync(IGameConnection connection);
    Task HandleTransportRejectAsync(IGameConnection connection, string reason, bool warning = false);
    Task EndSessionForTransportAsync(IGameConnection connection, string code, string reason);
    void Log(string message, string level = "info");
}