TekH
a6694bfce7
Introduced endpoints for embedding attachments in PDFs and converting between standard PDFs and PDF/A formats. Added `PdfAttachmentController` and `PdfConversionController` with multipart/form-data and Base64-based support. Implemented commands, handlers, and validators for these operations. Extended `IPdfProcessor` with methods for adding attachments and PDF/A conversion. Partially implemented functionality in `DevExpressPdfProcessor`, including `ConvertFromPdfAAsync`. Added `attachment.xml` and `withoutAttachment.pdf` as resources for testing. Marked endpoints as `[Obsolete]` to indicate incomplete implementation. Improved validation and error handling for commands.
60 lines
1.8 KiB
C#
60 lines
1.8 KiB
C#
using DocumentOperator.Application.Common.Interfaces;
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using FluentValidation;
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using MediatR;
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namespace DocumentOperator.Application.ConvertToPdfA;
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/// <summary>
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/// Command to convert a standard PDF to PDF/A format
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/// </summary>
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public record ConvertToPdfACommand : IRequest<byte[]>
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{
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/// <summary>
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/// PDF document stream. Must be positioned at the beginning (Position = 0).
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/// </summary>
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public required Stream PdfStream { get; init; }
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/// <summary>
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/// Target PDF/A level (e.g., "PDF/A-1b", "PDF/A-2b", "PDF/A-3b")
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/// </summary>
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public required string PdfALevel { get; init; }
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}
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/// <summary>
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/// Handler for ConvertToPdfACommand
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/// </summary>
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public class ConvertToPdfACommandHandler(IPdfProcessor pdfProcessor)
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: IRequestHandler<ConvertToPdfACommand, byte[]>
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{
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public async Task<byte[]> Handle(ConvertToPdfACommand request, CancellationToken cancellationToken)
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{
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return await pdfProcessor.ConvertToPdfAAsync(request.PdfStream, request.PdfALevel);
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}
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}
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/// <summary>
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/// Validator for ConvertToPdfACommand
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/// </summary>
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public class ConvertToPdfACommandValidator : AbstractValidator<ConvertToPdfACommand>
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{
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private static readonly string[] ValidPdfALevels =
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{
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"PDF/A-1b", "PDF/A-1a",
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"PDF/A-2b", "PDF/A-2u", "PDF/A-2a",
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"PDF/A-3b", "PDF/A-3u", "PDF/A-3a"
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};
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public ConvertToPdfACommandValidator()
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{
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RuleFor(x => x.PdfStream)
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.NotNull()
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.WithMessage("PDF stream is required");
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RuleFor(x => x.PdfALevel)
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.NotEmpty()
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.WithMessage("PDF/A level is required")
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.Must(level => ValidPdfALevels.Contains(level, StringComparer.OrdinalIgnoreCase))
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.WithMessage($"Invalid PDF/A level. Valid values: {string.Join(", ", ValidPdfALevels)}");
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}
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}
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