using FluentAssertions;
using foodmarket.IntegrationTests.Support;
using Microsoft.Extensions.DependencyInjection;
using Xunit;

namespace foodmarket.IntegrationTests;

/// <summary>Тест абстракции <see cref="foodmarket.Api.Storage.IObjectStorage"/>:
/// в default-конфиге (Storage:Type=Local) загружаем картинку товара через
/// существующий endpoint, потом читаем по public-URL через UploadsController.
/// Проверяем что file round-trip'aет.</summary>
[Collection(ApiCollection.Name)]
public class StorageAbstractionTests
{
    private readonly ApiFactory _factory;
    public StorageAbstractionTests(ApiFactory factory) => _factory = factory;

    [Fact]
    public void Local_storage_is_default()
    {
        using var scope = _factory.Services.CreateScope();
        var storage = scope.ServiceProvider.GetRequiredService<foodmarket.Api.Storage.IObjectStorage>();
        storage.Kind.Should().Be("local");
    }

    [Fact]
    public async Task Local_storage_round_trips_bytes()
    {
        using var scope = _factory.Services.CreateScope();
        var storage = scope.ServiceProvider.GetRequiredService<foodmarket.Api.Storage.IObjectStorage>();

        var key = $"products/{Guid.NewGuid():N}/test.png";
        // Минимальный валидный 1x1 PNG.
        var png = Convert.FromBase64String(
            "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNgAAIAAAUAAen63NgAAAAASUVORK5CYII=");
        using (var ms = new MemoryStream(png))
        {
            await storage.SaveAsync(key, ms, "image/png", CancellationToken.None);
        }
        var read = await storage.OpenAsync(key, CancellationToken.None);
        read.Should().NotBeNull();
        using var output = new MemoryStream();
        await read!.Value.Stream.CopyToAsync(output);
        output.ToArray().Should().BeEquivalentTo(png);

        await storage.DeleteAsync(key, CancellationToken.None);
        var afterDelete = await storage.OpenAsync(key, CancellationToken.None);
        afterDelete.Should().BeNull();
    }

    [Fact]
    public void Public_url_pattern_is_uploads_prefix()
    {
        using var scope = _factory.Services.CreateScope();
        var storage = scope.ServiceProvider.GetRequiredService<foodmarket.Api.Storage.IObjectStorage>();
        storage.PublicUrl("products/abc/x.png").Should().Be("/uploads/products/abc/x.png");
        // Leading slash в key не должен дублировать.
        storage.PublicUrl("/products/abc/x.png").Should().Be("/uploads/products/abc/x.png");
    }
}