TekH
eed9d46e19
- Add Origin parameter (default: BottomLeft) - Add Width/Height as alternatives to X2/Y2 - Validation: Either (X2+Y2) OR (Width+Height) required, not both - FluentValidation rules enforce mutual exclusivity
79 lines
2.7 KiB
C#
79 lines
2.7 KiB
C#
using DocumentOperator.Application.Common.Interfaces;
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using DocumentOperator.Domain.Models.ValueObjects;
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using FluentValidation;
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using MediatR;
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namespace DocumentOperator.Application.AddAnnotation;
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/// <summary>
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/// Command to add an annotation to a PDF document.
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/// </summary>
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public record AddAnnotationCommand : IRequest<byte[]>
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{
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public required Stream PdfStream { get; init; }
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public required AnnotationType AnnotationType { get; init; }
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public required int PageNumber { get; init; }
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public required (double X1, double Y1, double X2, double Y2) Rectangle { get; init; }
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public string? Content { get; init; }
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public string? Author { get; init; }
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public string? Color { get; init; }
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public TextMarkupStyle? TextMarkupStyle { get; init; }
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public AnnotationOrigin Origin { get; init; } = AnnotationOrigin.BottomLeft;
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}
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/// <summary>
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/// Handler for AddAnnotationCommand.
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/// </summary>
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public class AddAnnotationHandler(IPdfProcessor pdfProcessor) : IRequestHandler<AddAnnotationCommand, byte[]>
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{
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public async Task<byte[]> Handle(AddAnnotationCommand request, CancellationToken cancellationToken)
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{
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return await pdfProcessor.AddAnnotationAsync(
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request.PdfStream,
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request.AnnotationType,
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request.PageNumber,
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request.Rectangle,
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request.Content,
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request.Author,
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request.Color,
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request.TextMarkupStyle,
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request.Origin);
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}
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}
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/// <summary>
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/// Validator for AddAnnotationCommand.
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/// </summary>
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public class AddAnnotationValidator : AbstractValidator<AddAnnotationCommand>
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{
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public AddAnnotationValidator()
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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.PageNumber)
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.GreaterThan(0)
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.WithMessage("Page number must be greater than 0");
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RuleFor(x => x.Content)
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.NotEmpty()
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.When(x => x.AnnotationType == AnnotationType.FreeText || x.AnnotationType == AnnotationType.StickyNote)
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.WithMessage("Content is required for FreeText and StickyNote annotations");
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RuleFor(x => x.TextMarkupStyle)
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.NotNull()
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.When(x => x.AnnotationType == AnnotationType.TextMarkup)
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.WithMessage("TextMarkupStyle is required for TextMarkup annotations");
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RuleFor(x => x.Color)
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.Matches("^[0-9A-Fa-f]{6}$")
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.When(x => !string.IsNullOrWhiteSpace(x.Color))
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.WithMessage("Color must be a 6-digit hex value (e.g., 'FF0000' for red)");
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RuleFor(x => x.Rectangle)
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.Must(r => r.X2 > r.X1 && r.Y2 > r.Y1)
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.WithMessage("Rectangle coordinates must define a valid area (X2 > X1 and Y2 > Y1)");
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}
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}
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