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Better OPDS Reading Lists & Cover Generation for Webtoons (#3017)

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Co-authored-by: Zackaree <github@zackaree.com>
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Joe Milazzo 2024-06-24 20:01:50 -05:00 • committed by GitHub
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API.Tests/Services/ImageServiceTests.cs Normal file
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using System.IO;
using System.Linq;
using System.Text;
using API.Entities.Enums;
using API.Services;
using NetVips;
using Xunit;
using Image = NetVips.Image;
namespace API.Tests.Services;
public class ImageServiceTests
{
private readonly string _testDirectory = Path.Join(Directory.GetCurrentDirectory(), "../../../Services/Test Data/ImageService/Covers");
private const string OutputPattern = "_output";
private const string BaselinePattern = "_baseline";
/// <summary>
/// Run this once to get the baseline generation
/// </summary>
[Fact]
public void GenerateBaseline()
{
GenerateFiles(BaselinePattern);
}
/// <summary>
/// Change the Scaling/Crop code then run this continuously
/// </summary>
[Fact]
public void TestScaling()
{
GenerateFiles(OutputPattern);
GenerateHtmlFile();
}
private void GenerateFiles(string outputExtension)
{
// Step 1: Delete any images that have _output in the name
var outputFiles = Directory.GetFiles(_testDirectory, "*_output.*");
foreach (var file in outputFiles)
{
File.Delete(file);
}
// Step 2: Scan the _testDirectory for images
var imageFiles = Directory.GetFiles(_testDirectory, "*.*")
.Where(file => !file.EndsWith("html"))
.Where(file => !file.Contains(OutputPattern) && !file.Contains(BaselinePattern))
.ToList();
// Step 3: Process each image
foreach (var imagePath in imageFiles)
{
var fileName = Path.GetFileNameWithoutExtension(imagePath);
var dims = CoverImageSize.Default.GetDimensions();
using var sourceImage = Image.NewFromFile(imagePath, false, Enums.Access.SequentialUnbuffered);
var size = ImageService.GetSizeForDimensions(sourceImage, dims.Width, dims.Height);
var crop = ImageService.GetCropForDimensions(sourceImage, dims.Width, dims.Height);
using var thumbnail = Image.Thumbnail(imagePath, dims.Width, dims.Height,
size: size,
crop: crop);
var outputFileName = fileName + outputExtension + ".png";
thumbnail.WriteToFile(Path.Join(_testDirectory, outputFileName));
}
}
private void GenerateHtmlFile()
{
var imageFiles = Directory.GetFiles(_testDirectory, "*.*")
.Where(file => !file.EndsWith("html"))
.Where(file => !file.Contains(OutputPattern) && !file.Contains(BaselinePattern))
.ToList();
var htmlBuilder = new StringBuilder();
htmlBuilder.AppendLine("<!DOCTYPE html>");
htmlBuilder.AppendLine("<html lang=\"en\">");
htmlBuilder.AppendLine("<head>");
htmlBuilder.AppendLine("<meta charset=\"UTF-8\">");
htmlBuilder.AppendLine("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">");
htmlBuilder.AppendLine("<title>Image Comparison</title>");
htmlBuilder.AppendLine("<style>");
htmlBuilder.AppendLine("body { font-family: Arial, sans-serif; }");
htmlBuilder.AppendLine(".container { display: flex; flex-wrap: wrap; }");
htmlBuilder.AppendLine(".image-row { display: flex; align-items: center; margin-bottom: 20px; width: 100% }");
htmlBuilder.AppendLine(".image-row img { margin-right: 10px; max-width: 200px; height: auto; }");
htmlBuilder.AppendLine("</style>");
htmlBuilder.AppendLine("</head>");
htmlBuilder.AppendLine("<body>");
htmlBuilder.AppendLine("<div class=\"container\">");
foreach (var imagePath in imageFiles)
{
var fileName = Path.GetFileNameWithoutExtension(imagePath);
var baselinePath = Path.Combine(_testDirectory, fileName + "_baseline.png");
var outputPath = Path.Combine(_testDirectory, fileName + "_output.png");
var dims = CoverImageSize.Default.GetDimensions();
using var sourceImage = Image.NewFromFile(imagePath, false, Enums.Access.SequentialUnbuffered);
htmlBuilder.AppendLine("<div class=\"image-row\">");
htmlBuilder.AppendLine($"<p>{fileName} ({((double) sourceImage.Width / sourceImage.Height).ToString("F2")}) - {ImageService.WillScaleWell(sourceImage, dims.Width, dims.Height)}</p>");
htmlBuilder.AppendLine($"<img src=\"./{Path.GetFileName(imagePath)}\" alt=\"{fileName}\">");
if (File.Exists(baselinePath))
{
htmlBuilder.AppendLine($"<img src=\"./{Path.GetFileName(baselinePath)}\" alt=\"{fileName} baseline\">");
}
if (File.Exists(outputPath))
{
htmlBuilder.AppendLine($"<img src=\"./{Path.GetFileName(outputPath)}\" alt=\"{fileName} output\">");
}
htmlBuilder.AppendLine("</div>");
}
htmlBuilder.AppendLine("</div>");
htmlBuilder.AppendLine("</body>");
htmlBuilder.AppendLine("</html>");
File.WriteAllText(Path.Combine(_testDirectory, "index.html"), htmlBuilder.ToString());
}
}