using EnvelopeGenerator.ReceiverUI.Web.Client.Api.Models;

namespace EnvelopeGenerator.ReceiverUI.Web.Client.Services;

/// <summary>
/// Holds the current receiver authentication context for the active envelope.
/// Scoped per circuit (Interactive Server) or per browser tab (Interactive WASM).
///
/// Pages observe <see cref="Changed"/> to re-render when the underlying
/// auth response transitions (e.g. requires_access_code -> requires_tfa
/// -> show_document).
/// </summary>
public class ReceiverAuthState
{
    private ReceiverAuthResponse? _current;
    public string? EnvelopeKey { get; private set; }
    public ReceiverAuthResponse? Current => _current;

    public event Action? Changed;

    public void Set(string envelopeKey, ReceiverAuthResponse? response)
    {
        EnvelopeKey = envelopeKey;
        _current = response;
        Changed?.Invoke();
    }

    public void Clear()
    {
        EnvelopeKey = null;
        _current = null;
        Changed?.Invoke();
    }
}