public async Task <IActionResult> Convert()
{
StringValues clientParam;
StringValues keyParam;
StringValues orientationParam;
StringValues pageSizeParam;
var hasClient = Request.Query.TryGetValue("client", out clientParam);
var hasKey = Request.Query.TryGetValue("key", out keyParam);
var hasOrientation = Request.Query.TryGetValue("orientation", out orientationParam);
var hasPageSize = Request.Query.TryGetValue("pageSize", out pageSizeParam);
var client = hasClient && clientParam.Count > 0 ? clientParam[0] : "";
var key = hasKey && keyParam.Count > 0 ? keyParam[0] : "";
var orientation = hasOrientation && orientationParam.Count > 0 ? orientationParam[0] : "portrait";
var pageSize = hasPageSize && pageSizeParam.Count > 0 ? pageSizeParam[0] : "A4";
if (!_clientKeys.ContainsKey(client) || _clientKeys[client] != key)
{
return(new NotFoundResult());
}
var formData = HttpContext.Request.Form;
var files = formData.Files;
var docFile = files.Where(f => f.FileName == "doc.html").FirstOrDefault();
IActionResult response = null;
if (docFile != null)
{
var tempFolder = $"{System.IO.Path.GetTempPath()}{Guid.NewGuid()}";
Directory.CreateDirectory(tempFolder);
foreach (var file in files)
{
if (file.FileName != "doc.html")
{
await System.IO.File.WriteAllBytesAsync($"{tempFolder}/{file.FileName}", ReadAllBytes(file.OpenReadStream()));
}
}
try
{
using (var htmlSource = docFile.OpenReadStream())
using (var pdfDest = new ByteArrayOutputStream())
{
var writer = new PdfWriter(pdfDest);
var pdfDoc = new PdfDocument(writer);
pdfDoc.SetTagged();
PageSize ps = PageSize.A4;
if (pageSize == "A3")
{
ps = PageSize.A3;
}
if (orientation == "landscape")
{
ps = ps.Rotate();
}
pdfDoc.SetDefaultPageSize(ps);
var converterProperties = new ConverterProperties();
var fp = new DefaultFontProvider();
fp.AddDirectory(tempFolder);
converterProperties.SetFontProvider(fp);
converterProperties.SetImmediateFlush(true);
converterProperties.SetBaseUri(new Uri(tempFolder).AbsoluteUri);
HtmlConverter.ConvertToPdf(htmlSource, pdfDoc, converterProperties);
var bytes = pdfDest.ToArray();
response = new FileContentResult(bytes, "application/pdf");
}
}
catch (Exception ex)
{
response = StatusCode(500, new { error = ex.Message, stackTrace = ex.StackTrace });
}
Directory.Delete(tempFolder, true);
}
else
{
response = StatusCode((int)HttpStatusCode.BadRequest, new { error = "No doc file provided" });
}
return(response);
}
