using System.Text.Json.Nodes;

namespace backend.Realtime;

public interface IRealtimeUpstream : IAsyncDisposable
{
    Task SendJsonAsync(JsonObject envelope, CancellationToken ct);
    Task<JsonObject?> ReceiveJsonAsync(CancellationToken ct);
    // Once a receive returns null because the WebSocket transitioned out of
    // the Open state, these surface why. Both stay null until that happens.
    bool IsClosed { get; }
    string? CloseReason { get; }
}