using System.Net;
using System.Text;
using LehrerApp.Core.Models;
using Xunit;

namespace LehrerApp.Api.Tests;

public sealed class NominatimGeocoderTests
{
    [Fact]
    public async Task GeocodeAsync_NutztStrukturierteDeutschlandSucheUndLiestDisplayName()
    {
        Uri? requestedUri = null;
        var handler = new RecordingHandler(request =>
        {
            requestedUri = request.RequestUri;
            return new HttpResponseMessage(HttpStatusCode.OK)
            {
                Content = new StringContent(
                    """[{"lat":"50.105","lon":"8.761","display_name":"Testschule, Offenbach, Deutschland"}]""",
                    Encoding.UTF8, "application/json"),
            };
        });
        var http = new HttpClient(handler) { BaseAddress = new Uri("https://nominatim.openstreetmap.org/") };
        var geocoder = new NominatimGeocoder(http);

        var result = await geocoder.GeocodeAsync(new SchoolLocationRequest
        {
            SchoolName = "Testschule", Street = "Schulweg 1", PostalCode = "63000", City = "Offenbach",
        }, CancellationToken.None);

        Assert.NotNull(result);
        Assert.Equal(50.105, result!.Latitude);
        Assert.Equal("Testschule, Offenbach, Deutschland", result.DisplayName);
        Assert.Contains("countrycodes=de", requestedUri!.Query);
        Assert.Contains("street=Schulweg%201", requestedUri.Query);
        Assert.Contains("postalcode=63000", requestedUri.Query);
    }

    private sealed class RecordingHandler(Func<HttpRequestMessage, HttpResponseMessage> response)
        : HttpMessageHandler
    {
        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request,
            CancellationToken cancellationToken) => Task.FromResult(response(request));
    }
}