public ActionResult <MergeResponse> MergePdfs(string groupId, [Required][FromBody] PdfMergeRequest request)
{
if (request.PdfIds.Length < 1)
{
return(BadRequest("Atleast one pdf must be defined, current length 0"));
}
var underlayingPdfFiles = _context.PdfFiles
.Where(x => x.GroupId == groupId && !x.Removed)
.Where(x => request.PdfIds.Any(id => x.FileId == id))
.ToList();
var missingPdfFiles = request.PdfIds.Where(x => !underlayingPdfFiles.Any(file => x == file.FileId));
if (missingPdfFiles.Any())
{
var message = $"Pdf files not found, missing files from group '{groupId}' are '{missingPdfFiles.Aggregate("", (a, b) => $"{a}, {b}").Trim(',')}'";
_logger.LogWarning($"Requested merge but it failed: {message}");
return(BadRequest(message));
}
var mergeEntity = _context.PdfFiles.Add(new PdfEntity(groupId, PdfType.Merge)).Entity;
var filePath = $"{_settings.BaseUrl}/v1/pdf/{groupId}/{mergeEntity.FileId}.pdf";
request.PdfIds.ToList().ForEach(id =>
{
_mqMessages.PdfOpened(groupId, id);
underlayingPdfFiles.Single(x => x.FileId == id).Usage.Add(new PdfOpenedEntity());
});
var entitiesToPriritize =
underlayingPdfFiles
.Where(x => !x.Processed)
.Where(x => x.IsValidForHighPriority())
.ToList();
entitiesToPriritize.ForEach(pdfEntity =>
{
pdfEntity.MarkAsHighPriority(
_backgroundJob.EnqueueWithHighPriority <IPdfQueue>(que => que.CreatePdf(pdfEntity.Id), originalJobId: pdfEntity.HangfireJobId));
});
_context.SaveChanges();
var storageFile = new StorageFileId(mergeEntity, "pdf");
mergeEntity.HangfireJobId = _backgroundJob.EnqueueWithHighPriority <IPdfMerger>(merger => merger.MergePdf(storageFile, request.PdfIds));
_context.SaveChanges();
return(Accepted(new MergeResponse(mergeEntity.FileId, filePath)));
}
public IActionResult Get([FromRoute] string groupId, [FromRoute] string pdfId, [FromRoute] string extension, [FromQuery] bool noCount)
{
if (extension != "html" && extension != "pdf")
{
return(BadRequest("Only extensions 'pdf' and 'html' are supported."));
}
var pdfEntity = _context.PdfFiles.FirstOrDefault(x => x.GroupId == groupId && x.FileId == pdfId);
if (pdfEntity == null)
{
return(_errorPages.PdfNotFoundResponse());
}
if (pdfEntity.Removed)
{
return(_errorPages.PdfRemovedResponse());
}
if (!pdfEntity.Processed)
{
if (pdfEntity.IsValidForHighPriority())
{
pdfEntity.MarkAsHighPriority(
_backgroundJobs.EnqueueWithHighPriority <IPdfQueue>(que => que.CreatePdf(pdfEntity.Id), originalJobId: pdfEntity.HangfireJobId));
_context.SaveChanges();
}
return(_errorPages.PdfIsStillProcessingResponse());
}
var pdfOrHtml = _pdfStorage.Get(new StorageFileId(groupId, pdfId, extension));
if (!noCount)
{
pdfEntity.Usage.Add(new PdfOpenedEntity());
_context.SaveChanges();
_mqMessages.PdfOpened(groupId, pdfId);
}
return(new FileStreamResult(new MemoryStream(pdfOrHtml.Data), pdfOrHtml.ContentType));
}
