using System.Net;
using System.Net.Http.Headers;
using PnvPanel.IntegrationTests.TestSupport;
using Xunit;
using static PnvPanel.IntegrationTests.TestSupport.AuthTestHelper;

namespace PnvPanel.IntegrationTests.Media;

[Collection(IntegrationTestCollection.Name)]
public class MediaImageFlowTests(PnvPanelWebApplicationFactory factory)
{
    private sealed record MediaImageResponse(
        Guid Id,
        string FileName,
        string ContentType,
        long SizeBytes
    );

    /// <summary>Минимальный валидный PNG (1×1) — не важно содержимое, важен путь загрузка → отдача.</summary>
    private static readonly byte[] PngBytes = Convert.FromBase64String(
        "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg=="
    );

    private static MultipartFormDataContent ImageContent(
        byte[] bytes,
        string contentType,
        string fileName
    )
    {
        var file = new ByteArrayContent(bytes);
        file.Headers.ContentType = new MediaTypeHeaderValue(contentType);
        return new MultipartFormDataContent { { file, "file", fileName } };
    }

    [Fact]
    public async Task AdminUploadsImage_ThenAnyoneCanFetchItWithoutAuth()
    {
        using var adminClient = factory.CreateClient();
        adminClient.UseBearerToken(await LoginAsAdminAsync(adminClient));

        var uploadResponse = await adminClient.PostAsync(
            "/api/admin/media/images",
            ImageContent(PngBytes, "image/png", "shot.png")
        );
        Assert.Equal(HttpStatusCode.OK, uploadResponse.StatusCode);
        var image = await uploadResponse.ReadAsAsync<MediaImageResponse>();
        Assert.NotNull(image);
        Assert.Equal("shot.png", image!.FileName);

        // Анонимный клиент: markdown-картинку грузит обычный <img> без Authorization.
        using var anonymousClient = factory.CreateClient();
        var getResponse = await anonymousClient.GetAsync($"/api/media/images/{image.Id}");

        Assert.Equal(HttpStatusCode.OK, getResponse.StatusCode);
        Assert.Equal("image/png", getResponse.Content.Headers.ContentType?.MediaType);
        Assert.Equal(PngBytes, await getResponse.Content.ReadAsByteArrayAsync());
    }

    [Fact]
    public async Task Upload_WhenNotAdmin_ReturnsForbidden()
    {
        using var userClient = factory.CreateClient();
        var userName = $"mia_{Guid.NewGuid():N}"[..20];
        var (_, token) = await RegisterAndLoginAsync(userClient, userName, "P@ssw0rd123");
        userClient.UseBearerToken(token);

        var response = await userClient.PostAsync(
            "/api/admin/media/images",
            ImageContent(PngBytes, "image/png", "shot.png")
        );

        Assert.Equal(HttpStatusCode.Forbidden, response.StatusCode);
    }

    [Fact]
    public async Task Upload_WithUnsupportedType_ReturnsBadRequest()
    {
        using var adminClient = factory.CreateClient();
        adminClient.UseBearerToken(await LoginAsAdminAsync(adminClient));

        var response = await adminClient.PostAsync(
            "/api/admin/media/images",
            ImageContent("<svg/>"u8.ToArray(), "image/svg+xml", "x.svg")
        );

        Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
    }

    [Fact]
    public async Task GetImage_WhenUnknownId_ReturnsNotFound()
    {
        using var anonymousClient = factory.CreateClient();

        var response = await anonymousClient.GetAsync($"/api/media/images/{Guid.NewGuid()}");

        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
    }
}