public IActionResult Index(
[NotNull] [ItemNotNull] IEnumerable<IFormFile> files,
[CanBeNull] string format,
[CanBeNull] string title,
[CanBeNull] string publisher,
[CanBeNull] string website,
[CanBeNull] string stylesheetUrl,
[CanBeNull] IFormFile stylesheet)
{
if (files is null)
throw new ArgumentNullException(nameof(files));
IFormFile[] uploadedFiles = files.ToArray();
if (uploadedFiles.Length == 0)
return BadRequest("No files uploaded.");
if (uploadedFiles.Any(x => x.Length <= 0))
return BadRequest("Invalid file length.");
if (uploadedFiles.Any(x => x.ContentType != MicrosoftWordDocument.ToString() &&
x.FileName.EndsWith(".docx", StringComparison.OrdinalIgnoreCase) &&
x.FileName.EndsWith(".md", StringComparison.OrdinalIgnoreCase)))
return BadRequest("Invalid file format.");
if (stylesheet is IFormFile s && !s.FileName.EndsWith(".css"))
return BadRequest($"Invalid stylesheet:{stylesheet.FileName}.");
Queue<Package> packagesQueue = new Queue<Package>(uploadedFiles.Length);
foreach (IFormFile file in uploadedFiles)
{
if (file.FileName.EndsWith(".docx", StringComparison.OrdinalIgnoreCase))
{
packagesQueue.Enqueue(Package.Open(file.OpenReadStream()));
}
else if (file.FileName.EndsWith(".md", StringComparison.OrdinalIgnoreCase))
{
MDocument mDocument = new MDocument();
using (StreamReader reader = new StreamReader(file.OpenReadStream()))
{
MarkdownVisitor visitor = new MarkdownVisitor();
ReadOnlySpan<char> span;
while ((span = reader.ReadLine()) != null)
{
mDocument.Append(visitor.Visit(in span));
}
}
Package package = DocxFilePath.Create().ToPackage(FileAccess.ReadWrite);
mDocument.ToOpenXml().WriteTo(package.GetPart(Document.PartUri));
packagesQueue.Enqueue(package);
}
}
Package output =
Process(
packagesQueue,
title ?? "[REPORT TITLE]",
publisher ?? "[PUBLISHER]",
website ?? "[PUBLISHER WEBSITE]");
foreach (Package package in packagesQueue)
{
package.Close();
}
switch (format)
{
case "docx":
{
return File(output.ToStream(), MicrosoftWordDocument, $"{title ?? "result"}.docx");
}
case "html":
{
string styles = stylesheet is null ? null : new StreamReader(stylesheet.OpenReadStream()).ReadToEnd();
OpenXmlPackageVisitor ooxml = new OpenXmlPackageVisitor(output);
HtmlVisitor html = new HtmlVisitor(ooxml.Document.ChartReferences, ooxml.Document.ImageReferences);
XObject htmlResult = html.Visit(ooxml.Document.Content, ooxml.Footnotes.Content, title, stylesheetUrl, styles);
return File(Encoding.UTF8.GetBytes(htmlResult.ToString()), "text/html", $"{title ?? "result"}.html");
}
case "xml":
{
OpenXmlPackageVisitor xml = new OpenXmlPackageVisitor(output);
XElement xmlResult = xml.Document.Content;
return File(Encoding.UTF8.GetBytes(xmlResult.ToString()), "application/xml", $"{title ?? "result"}.xml");
}
default:
{
return BadRequest(ModelState);
}
}
}