using System.Net;
using System.Text;

namespace BigRegister.Tests;

/// <summary>
/// Stub HttpMessageHandler shared by the ZGW source tests (no live server, no mocking
/// library) — keyed purely by request URL (method-agnostic, since no test scenario reuses a
/// URL across GET/POST). Records every request's url/body/auth-scheme for assertion.
/// Factored out of OpenZaakZaakSourceTests once OpenZaakDocumentSourceTests needed the
/// identical stub.
/// </summary>
internal sealed class ZgwStubHandler(Func<string, string> respond) : HttpMessageHandler
{
  public List<string> Requests { get; } = new();
  public List<string?> AuthSchemes { get; } = new();
  public List<string> Bodies { get; } = new();

  public string BodyOf(string url) => Bodies[Requests.LastIndexOf(url)];

  protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
  {
    var url = request.RequestUri!.ToString();
    Requests.Add(url);
    AuthSchemes.Add(request.Headers.Authorization?.Scheme);
    Bodies.Add(request.Content?.ReadAsStringAsync(cancellationToken).GetAwaiter().GetResult() ?? "");
    return Task.FromResult(new HttpResponseMessage(HttpStatusCode.OK)
    {
      Content = new StringContent(respond(url), Encoding.UTF8, "application/json"),
    });
  }
}