// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using System.IO;
using System.Text;
using System.Threading.Tasks;
using Squidex.Assets;
using Squidex.Domain.Apps.Entities.Assets.Commands;
using Squidex.Domain.Apps.Entities.Properties;
using Squidex.Infrastructure.Validation;
using Xunit;

namespace Squidex.Domain.Apps.Entities.Assets
{
    public class SvgAssetMetadataSourceTests
    {
        private readonly MemoryStream stream = new MemoryStream();
        private readonly SvgAssetMetadataSource sut = new SvgAssetMetadataSource();

        public SvgAssetMetadataSourceTests()
        {
            sut = new SvgAssetMetadataSource();
        }

        [Fact]
        public async Task Should_add_image_tag_if_svg_mime()
        {
            var svg = new DelegateAssetFile("MyImage.png", "image/svg+xml", 1024, () => stream);

            var command = new CreateAsset { File = svg };

            await sut.EnhanceAsync(command);

            Assert.Contains("image", command.Tags);
        }

        [Fact]
        public async Task Should_add_image_tag_if_svg_extension()
        {
            var svg = new DelegateAssetFile("MyImage.svg", "other", 1024, () => stream);

            var command = new CreateAsset { File = svg };

            await sut.EnhanceAsync(command);

            Assert.Contains("image", command.Tags);
        }

        [Fact]
        public async Task Should_throw_exception_if_svg_is_malicious()
        {
            var bytes = Encoding.UTF8.GetBytes(Resources.SvgInvalid);

            stream.Write(bytes);
            stream.Seek(0, SeekOrigin.Begin);

            var svg = new DelegateAssetFile("MyImage.svg", "other", 1024, () => stream);

            var command = new CreateAsset { File = svg };

            await Assert.ThrowsAsync<ValidationException>(() => sut.EnhanceAsync(command));
        }

        [Fact]
        public async Task Should_not_throw_exception_if_svg_is_not_malicious()
        {
            var bytes = Encoding.UTF8.GetBytes(Resources.SvgValid);

            stream.Write(bytes);
            stream.Seek(0, SeekOrigin.Begin);

            var svg = new DelegateAssetFile("MyImage.svg", "other", 1024, () => stream);

            var command = new CreateAsset { File = svg };

            await sut.EnhanceAsync(command);
        }
    }
}