TekH
5b30465126
- Removed MergeDocuments static method; integrated merge process directly in Handle() - Added null check for request.Report before merging - Cleaned up redundant return and improved flow for memory stream handling - Added DevExpress.XtraReports using directive - Clarified comment and exception messages for PDF loading and merging
72 lines
2.6 KiB
C#
72 lines
2.6 KiB
C#
#if WINDOWS
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using DevExpress.XtraReports;
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using EnvelopeGenerator.Application.Common.Extensions;
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using EnvelopeGenerator.Application.Exceptions;
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using EnvelopeGenerator.Domain.Constants;
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using GdPicture14;
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using MediatR;
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namespace EnvelopeGenerator.Application.Pdf.Behaviors;
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/// <summary>
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///
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/// </summary>
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public class PdfMergeBehavior : IPipelineBehavior<BurnPdfCommand, byte[]>
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{
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/// <summary>
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///
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/// </summary>
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/// <param name="request"></param>
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/// <param name="next"></param>
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/// <param name="cancel"></param>
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/// <returns></returns>
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/// <exception cref="NotImplementedException"></exception>
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public async Task<byte[]> Handle(BurnPdfCommand request, RequestHandlerDelegate<byte[]> next, CancellationToken cancel)
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{
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var doc = await next(cancel);
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if (request.Report is null)
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throw new InvalidOperationException("The final document report could not be merged." +
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"There may be an error related to the behavior register order." +
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"Request details:\n" + request.ToJson(Format.Json.ForDiagnostics));
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using var oDocumentStream = new MemoryStream(doc);
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using var oReportStream = new MemoryStream(request.Report);
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using var oFinalStream = new MemoryStream();
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using var oDocumentPDF = new GdPicturePDF();
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using var oReportPDF = new GdPicturePDF();
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GdPictureStatus oStatus = GdPictureStatus.OK;
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// Load the source file into memory
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oDocumentPDF.LoadFromStream(oDocumentStream, true);
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oStatus = oDocumentPDF.GetStat();
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if (oStatus != GdPictureStatus.OK)
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throw new MergeDocumentException($"Document could not be loaded: {oStatus}");
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// Load the report file into memory
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oReportPDF.LoadFromStream(oReportStream, true);
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oStatus = oReportPDF.GetStat();
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if (oStatus != GdPictureStatus.OK)
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throw new MergeDocumentException($"Report could not be loaded: {oStatus}");
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// Merge the documents
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var oMergedPDF = oDocumentPDF.Merge2Documents(oDocumentPDF, oReportPDF);
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oStatus = oMergedPDF.GetStat();
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if (oStatus != GdPictureStatus.OK)
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throw new MergeDocumentException($"Documents could not be merged: {oStatus}");
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// Convert to byte
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oMergedPDF.SaveToStream(oFinalStream);
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oStatus = oDocumentPDF.GetStat();
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if (oStatus != GdPictureStatus.OK)
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throw new MergeDocumentException($"Document could not be converted to PDF/A: {oStatus}");
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doc = oFinalStream.ToArray();
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string base64String = Convert.ToBase64String(doc);
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return doc;
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}
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}
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#endif |