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Refactor PDF signing logic and appearance handling

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Refactored `Pkcs11Options` by removing `DefaultCertificationLevel` and improving property documentation. Replaced `VisualSignature` in `PdfSignOptionsDto` with `Appearance` using the new `PdfSignatureAppearanceDto` class, which encapsulates signature appearance details, including font and color settings.

Enhanced `PdfSignatureCertificationLevel` enum with more descriptive values and added XML documentation. Updated `IPdfDigitalSignatureService` to support optional signature images and removed redundant methods.

Refactored `PdfDigitalSignatureService` to streamline appearance handling, validate inputs, and improve maintainability. Removed unused methods and added support for `PdfSignatureAppearanceDto`.

Simplified `PdfSignatureController` by consolidating form properties into `PdfSignOptionsDto`. Improved code readability and flexibility while removing redundant logic.
This commit is contained in:
tekh
2026-10-19 10:48:06 +02:00
parent 57a08e8a89
commit 232b341894
9 changed files with 170 additions and 255 deletions
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80
EnvelopeGenerator.Server/EnvelopeGenerator.Server/Controllers/PdfSignatureController.cs
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@@ -1,5 +1,4 @@
using EnvelopeGenerator.Application.Common.Dto;
using EnvelopeGenerator.Application.Common.Enums;
using EnvelopeGenerator.Application.Common.Interfaces.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
@@ -33,59 +32,12 @@ public class PdfSignatureController(IPdfDigitalSignatureService signatureService
/// <summary>
///
/// </summary>
public required IFormFile SignatureImageFile { get; init; }
public required IFormFile SignatureImage { get; init; }
/// <summary>
///
/// </summary>
public required string? UUID { get; init; }
/// <summary>
///
/// </summary>
public required string? Name { get; init; }
/// <summary>
///
/// </summary>
public required string? Reason { get; init; }
/// <summary>
///
/// </summary>
public required string? Location { get; init; }
/// <summary>
///
/// </summary>
public required string? Email { get; init; }
/// <summary>
///
/// </summary>
public required string? Phone { get; init; }
/// <summary>
///
/// </summary>
public required VSignature Signature { get; init; }
/// <summary>
///
/// </summary>
/// <param name="PageNumber"></param>
/// <param name="Left"></param>
/// <param name="Bottom"></param>
/// <param name="Width"></param>
/// <param name="Height"></param>
/// <param name="ShowLabels"></param>
public record VSignature(
int PageNumber = 1,
double Left = 100,
double Bottom = 100,
double Width = 220,
double Height = 80,
bool ShowLabels = true);
public PdfSignOptionsDto Options { get; init; } = new PdfSignOptionsDto();
}
/// <summary>
@@ -99,32 +51,14 @@ public class PdfSignatureController(IPdfDigitalSignatureService signatureService
[Consumes("multipart/form-data")]
public async Task<IActionResult> Sign([FromForm] SignPdfForm request, CancellationToken cancel)
{
await using var signatureImageInput = request.SignatureImageFile.OpenReadStream();
using var signatureImageBuffer = new MemoryStream();
await signatureImageInput.CopyToAsync(signatureImageBuffer, cancel);
var signOptions = new PdfSignOptionsDto
{
UUID = request.UUID,
Name = request.Name,
Reason = request.Reason,
Location = request.Location,
Email = request.Email,
Phone = request.Phone,
CertificationLevel = PdfSignatureCertificationLevel.FormFillingAndAnnotations,
VisualSignature = new PdfVisualSignatureOptionsDto(
ImageBytes: signatureImageBuffer.ToArray(),
PageNumber: request.Signature.PageNumber,
Left: request.Signature.Left,
Bottom: request.Signature.Bottom,
Width: request.Signature.Width,
Height: request.Signature.Height,
ShowLabels: request.Signature.ShowLabels)
};
await using var signatureImage = request.SignatureImage.OpenReadStream();
await using var input = request.File.OpenReadStream();
var output = new MemoryStream();
await signatureService.SignPdfAsync(input, output, signOptions, cancel);
await signatureService.SignPdfAsync(input, output, request.Options, signatureImage, cancel);
output.Position = 0;
var fileName = Path.GetFileNameWithoutExtension(request.File.FileName);
return File(output, "application/pdf", $"{fileName}-signed.pdf");