PurpleCreativity/WSiPBookDownloader
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Better argument handling, make output-dir optional

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PurpleCreativity
2026-06-17 22:40:18 +02:00
parent e270e1dfcb
commit 2f29be6222
1 changed files with 37 additions and 19 deletions
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56
Program.cs
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@@ -7,9 +7,9 @@ namespace WSiPBookDownloader;
internal class BookMissingException : Exception
{
public int BookId { get; }
public uint BookId { get; }
public BookMissingException(int bookId)
public BookMissingException(uint bookId)
: base($"Book with ID {bookId} does not exist.")
{
BookId = bookId;
@@ -45,28 +45,46 @@ internal class Program
static async Task Main(string[] args)
{
if (args.Length < 2 || args.Length > 4)
var onlyCovers = args.Any(arg => arg.Equals("--only-covers", StringComparison.OrdinalIgnoreCase));
var outputDirectory = Directory.GetCurrentDirectory();
var outputDirectoryIndex = Array.FindIndex(args, arg => arg.Equals("--output-dir", StringComparison.OrdinalIgnoreCase));
if (outputDirectoryIndex > -1)
{
Log("Usage: [outputDirectory] [startBookId] [endBookId] [--only-covers]", ConsoleColor.DarkRed);
return;
if (outputDirectoryIndex + 1 >= args.Length)
{
Log("--output-dir requires a value.", ConsoleColor.DarkRed);
return;
}
outputDirectory = args[outputDirectoryIndex + 1];
if (!Directory.Exists(outputDirectory))
{
Log($"Output directory \"{outputDirectory}\" does not exist.", ConsoleColor.DarkRed);
return;
}
}
var outputDirectory = args[0];
if (!Path.Exists(outputDirectory))
{
Log($"Output directory \"{outputDirectory}\" does not exist.", ConsoleColor.DarkRed);
return;
}
var positionalArgs = args
.Except(
[
"--only-covers",
"--output-dir",
outputDirectory
], StringComparer.OrdinalIgnoreCase)
.ToArray();
var startBookId = int.Parse(args[1]);
var endBookId = (args.Length >= 3 && int.TryParse(args[2], out var parsedEndBookId))
? parsedEndBookId
var startBookId = int.Parse(positionalArgs[0]);
var endBookId = positionalArgs.Length > 1
? int.Parse(positionalArgs[1])
: startBookId;
var onlyCovers = args.FirstOrDefault(arg => arg.Equals("--only-covers", StringComparison.OrdinalIgnoreCase)) != null;
var bookIds = Enumerable.Range(startBookId, endBookId - startBookId + 1);
var bookIds = Enumerable.Range(startBookId, endBookId - startBookId + 1).Select(bookId => (uint)bookId);
var parallelOptions = new ParallelOptions { MaxDegreeOfParallelism = onlyCovers ? 100 : 10 };
Log($"Output directory: \"{outputDirectory}\"");
await Parallel.ForEachAsync(bookIds, parallelOptions, async (bookId, cancellationToken) =>
{
var outputPath = Path.Combine(outputDirectory, $"{bookId}.pdf");
@@ -104,7 +122,7 @@ internal class Program
});
}
private static async Task DownloadBookCoverJpg(int bookId, string outputDir, CancellationToken cancellationToken = default)
private static async Task DownloadBookCoverJpg(uint bookId, string outputDir, CancellationToken cancellationToken = default)
{
var outputPath = Path.Combine(outputDir, $"{bookId}.jpg");
if (File.Exists(outputPath))
@@ -126,7 +144,7 @@ internal class Program
Debug.WriteLine($"Downloaded cover for book {bookId}");
}
private static async Task DownloadBookJpg(int bookId, string outputDir, CancellationToken cancellationToken = default)
private static async Task DownloadBookJpg(uint bookId, string outputDir, CancellationToken cancellationToken = default)
{
var currentPage = 1;
while (true)
@@ -163,7 +181,7 @@ internal class Program
}
}
private static void BuildPdf(int bookId, string jpgDir, string outputPath)
private static void BuildPdf(uint bookId, string jpgDir, string outputPath)
{
var pages = Directory.GetFiles(jpgDir, "*.jpg")
.OrderBy(file => int.Parse(Path.GetFileNameWithoutExtension(file)))