using System.Net;
using System.Net.Http.Headers;
using System.Text;

namespace GerbilManager.Tests;

/// <summary>
/// POST /import/ingest-resolved/upload — Upload-Variante des Ingests: eine hochgeladene
/// resolved_import.json wird serverseitig in den Import-Quellordner gestaged und direkt ingested.
/// Damit lässt sich der Import gegen PROD fahren, ohne die Datei per SSH/docker cp in den Container
/// zu kopieren. Der Test isoliert Quell-/Fotoordner über ApiFactory in Temp-Verzeichnisse.
/// </summary>
public class ImportIngestUploadEndpointTests
{
    [Fact]
    public async Task Upload_stages_resolved_json_and_runs_ingest()
    {
        var srcDir = Path.Combine(Path.GetTempPath(), "ingest-upload-" + Guid.NewGuid().ToString("N"));
        var photoDir = Path.Combine(Path.GetTempPath(), "ingest-upload-photos-" + Guid.NewGuid().ToString("N"));
        using var factory = new ApiFactory { ImportSourcePath = srcDir, PhotosRootPath = photoDir };
        var client = factory.CreateClient();

        // Minimaler, aber valider Payload (leere Sammlungen) — genügt, um Staging + Ingest-Lauf zu prüfen.
        const string json = "{\"Gerbils\":[],\"Litters\":[],\"Contacts\":[],\"SaleContracts\":[],\"GerbilPhotos\":[]}";

        using var form = new MultipartFormDataContent();
        var file = new ByteArrayContent(Encoding.UTF8.GetBytes(json));
        file.Headers.ContentType = new MediaTypeHeaderValue("application/json");
        form.Add(file, "resolved", "resolved_import.json");

        var resp = await client.PostAsync("/import/ingest-resolved/upload", form);
        Assert.Equal(HttpStatusCode.OK, resp.StatusCode);

        var body = await resp.Content.ReadAsStringAsync();
        Assert.DoesNotContain("Error:", body); // Ingest lief, keine "file not found"-Fehlermeldung

        // Die hochgeladene Datei wurde an den erwarteten Ort gestaged.
        Assert.True(File.Exists(Path.Combine(srcDir, "resolved_import.json")));

        try { Directory.Delete(srcDir, recursive: true); } catch { /* best effort */ }
        try { Directory.Delete(photoDir, recursive: true); } catch { /* best effort */ }
    }

    [Fact]
    public async Task Upload_rejects_empty_file_with_400()
    {
        var srcDir = Path.Combine(Path.GetTempPath(), "ingest-upload-" + Guid.NewGuid().ToString("N"));
        using var factory = new ApiFactory { ImportSourcePath = srcDir };
        var client = factory.CreateClient();

        using var form = new MultipartFormDataContent();
        var file = new ByteArrayContent(Array.Empty<byte>());
        file.Headers.ContentType = new MediaTypeHeaderValue("application/json");
        form.Add(file, "resolved", "resolved_import.json");

        var resp = await client.PostAsync("/import/ingest-resolved/upload", form);
        Assert.Equal(HttpStatusCode.BadRequest, resp.StatusCode);

        try { Directory.Delete(srcDir, recursive: true); } catch { /* best effort */ }
    }
}