Refactor certificate generation
This commit is contained in:
Sosthene
parent
0d443be163
commit
0267892cdc
@ -210,40 +210,34 @@ export default function DocumentTables(props: IProps) {
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}
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};
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// Fetch folder data to get office/notary information
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// const folderProcess = await FolderService.getFolderByUid(folderUid, false, true);
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// const folderData = folderProcess?.processData;
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// Get the specific document that was clicked
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const documentProcess = await DocumentService.getDocumentByUid(doc.uid);
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if (!documentProcess) {
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throw new Error('Document not found');
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}
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// console.log('[DocumentTables] onDownloadCertificate: folderData', folderData);
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// Process only the files for this specific document
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for (const file of documentProcess.processData.files) {
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const fileProcess = await FileService.getFileByUid(file.uid);
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console.log('[DocumentTables] onDownloadCertificate: fileProcess', fileProcess);
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const documentProcesses = await DocumentService.getDocuments();
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documentProcesses.filter((process: any) => process.processData.folder.uid === folderUid);
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// console.log('[DocumentTables] onDownloadCertificate: documentProcesses', documentProcesses);
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for (const document of documentProcesses) {
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for (const file of document.processData.files) {
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await FileService.getFileByUid(file.uid).then((res: any) => {
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console.log('[DocumentTables] onDownloadCertificate: fileProcess', res);
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const hash = res.lastUpdatedFileState.pcd_commitment.file_blob;
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const hash = fileProcess.lastUpdatedFileState.pcd_commitment.file_blob;
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certificateData.documentHash = hash;
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MessageBus.getInstance().generateMerkleProof(res.lastUpdatedFileState, 'file_blob').then((proof) => {
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const proof = await MessageBus.getInstance().generateMerkleProof(fileProcess.lastUpdatedFileState, 'file_blob');
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console.log('[DocumentTables] onDownloadCertificate: proof', proof);
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const metadata: Metadata = {
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fileName: res.processData.file_name,
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fileName: fileProcess.processData.file_name,
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isDeleted: false,
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updatedAt: new Date(res.processData.updated_at),
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commitmentId: res.lastUpdatedFileState.commited_in,
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createdAt: new Date(res.processData.created_at),
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documentUid: doc.document_type.uid,
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updatedAt: new Date(fileProcess.processData.updated_at),
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commitmentId: fileProcess.lastUpdatedFileState.commited_in,
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createdAt: new Date(fileProcess.processData.created_at),
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documentUid: doc.uid,
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documentType: doc.document_type.name,
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merkleProof: proof
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};
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certificateData.metadata = metadata;
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});
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}
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)}
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}
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console.log('[DocumentTables] onDownloadCertificate: certificateData', certificateData);
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@ -1,5 +1,5 @@
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import { saveAs } from 'file-saver';
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import jsPDF from 'jspdf';
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import { PDFDocument, rgb, StandardFonts } from 'pdf-lib';
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export interface CustomerInfo {
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firstName: string;
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@ -49,92 +49,218 @@ export default class PdfService {
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*/
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public async generateCertificate(certificateData: CertificateData): Promise<Blob> {
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try {
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const doc = new jsPDF();
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const pdfDoc = await PDFDocument.create();
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const page = pdfDoc.addPage([595, 842]); // A4 size
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const { width, height } = page.getSize();
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const helveticaFont = await pdfDoc.embedFont(StandardFonts.Helvetica);
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const helveticaBoldFont = await pdfDoc.embedFont(StandardFonts.HelveticaBold);
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const helveticaObliqueFont = await pdfDoc.embedFont(StandardFonts.HelveticaOblique);
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let y = height - 40; // Start 40pt from the top
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const leftMargin = 20;
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const rightSectionX = 320;
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const lineSpacing = 16;
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// Notary Information Section (Top Left)
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doc.setFontSize(12);
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doc.setFont('helvetica', 'bold');
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doc.text('Notaire Validateur:', 20, 30);
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doc.setFont('helvetica', 'normal');
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doc.text(certificateData.notary.name, 20, 37);
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page.drawText('Notaire Validateur:', {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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page.drawText(certificateData.notary.name, {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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// Customer Information Section (Top Right)
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doc.setFont('helvetica', 'bold');
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doc.text('Fournisseur de Document:', 120, 30);
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doc.setFont('helvetica', 'normal');
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doc.text(`${certificateData.customer.firstName} ${certificateData.customer.lastName}`, 120, 37);
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doc.text(certificateData.customer.email, 120, 44);
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doc.text(certificateData.customer.postalAddress, 120, 51);
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let yRight = height - 40;
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page.drawText('Fournisseur de Document:', {
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x: rightSectionX,
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y: yRight,
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size: 12,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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yRight -= lineSpacing;
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page.drawText(`${certificateData.customer.firstName} ${certificateData.customer.lastName}`, {
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x: rightSectionX,
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y: yRight,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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yRight -= lineSpacing;
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page.drawText(certificateData.customer.email, {
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x: rightSectionX,
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y: yRight,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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yRight -= lineSpacing;
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page.drawText(certificateData.customer.postalAddress, {
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x: rightSectionX,
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y: yRight,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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// Centered Title
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doc.setFontSize(20);
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doc.setFont('helvetica', 'bold');
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doc.text('Certificat de Validation de Document', 105, 80, { align: 'center' });
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y -= 4 * lineSpacing; // Add more space between header and title
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const titleText = 'Certificat de Validation de Document';
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const titleWidth = helveticaBoldFont.widthOfTextAtSize(titleText, 20);
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page.drawText(titleText, {
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x: (width - titleWidth) / 2,
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y: y,
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size: 20,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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// Add a line separator
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doc.setLineWidth(0.5);
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doc.line(20, 90, 190, 90);
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// Reset font for content
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doc.setFontSize(12);
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doc.setFont('helvetica', 'normal');
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let yPosition = 110;
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page.drawLine({
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start: { x: leftMargin, y: y },
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end: { x: width - leftMargin, y: y },
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thickness: 0.5,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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// Document Information Section
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doc.setFont('helvetica', 'bold');
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doc.text('Informations du Document', 20, yPosition);
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yPosition += 10;
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doc.setFont('helvetica', 'normal');
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doc.text(`UID du Document: ${certificateData.metadata.documentUid}`, 20, yPosition);
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yPosition += 7;
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doc.text(`Type de Document: ${certificateData.metadata.documentType}`, 20, yPosition);
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yPosition += 7;
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doc.text(`UID du Dossier: ${certificateData.folderUid}`, 20, yPosition);
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yPosition += 7;
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doc.text(`Créé le: ${certificateData.metadata.createdAt.toLocaleDateString('fr-FR')}`, 20, yPosition);
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yPosition += 7;
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doc.text(`Nom du fichier: ${certificateData.metadata.fileName}`, 20, yPosition);
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yPosition += 7;
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doc.text(`ID de transaction: ${certificateData.metadata.commitmentId}`, 20, yPosition);
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yPosition += 7;
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doc.text(`Dernière modification: ${certificateData.metadata.updatedAt.toLocaleDateString('fr-FR')}`, 20, yPosition);
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yPosition += 7;
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doc.text(`Statut: ${certificateData.metadata.isDeleted ? 'Supprimé' : 'Actif'}`, 20, yPosition);
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yPosition += 15;
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page.drawText('Informations du Document', {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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page.drawText(`UID du Dossier: ${certificateData.folderUid}`, {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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page.drawText(`Type de Document: ${certificateData.metadata.documentType}`, {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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page.drawText(`Nom du fichier: ${certificateData.metadata.fileName}`, {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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page.drawText(`Créé le: ${certificateData.metadata.createdAt.toLocaleDateString('fr-FR')}`, {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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page.drawText(`Dernière modification: ${certificateData.metadata.updatedAt.toLocaleDateString('fr-FR')}`, {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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// Document Hash Section
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doc.setFont('helvetica', 'bold');
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doc.text('Intégrité du Document', 20, yPosition);
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yPosition += 10;
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page.drawText('Intégrité du Document', {
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x: leftMargin,
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y: y,
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size: 12,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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y -= lineSpacing;
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doc.setFont('helvetica', 'normal');
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doc.text(`Hash SHA256 du Document:`, 20, yPosition);
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yPosition += 7;
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// Add verification data as base64
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const verificationData = {
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documentHash: certificateData.documentHash,
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commitmentId: certificateData.metadata.commitmentId,
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merkleProof: certificateData.metadata.merkleProof || "N/A"
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};
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const verificationDataBase64 = btoa(JSON.stringify(verificationData));
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// Split hash into multiple lines if needed
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const hash = certificateData.documentHash;
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const maxWidth = 170; // Available width for text
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const hashLines = this.splitTextToFit(doc, hash, maxWidth);
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// Calculate proper chunk size based on available width and font size
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const availableWidth = width - (2 * leftMargin) - 20; // Full width minus margins and safety buffer
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const fontSize = 12;
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// Use a typical base64 character for width calculation
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const avgCharWidth = helveticaFont.widthOfTextAtSize('A', fontSize);
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const charsPerLine = Math.floor(availableWidth / avgCharWidth);
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const chunkSize = Math.max(60, Math.min(100, charsPerLine)); // More conservative limits
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for (const line of hashLines) {
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doc.text(line, 25, yPosition);
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yPosition += 7;
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const chunks = [];
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for (let j = 0; j < verificationDataBase64.length; j += chunkSize) {
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chunks.push(verificationDataBase64.slice(j, j + chunkSize));
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}
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yPosition += 8; // Extra space after hash
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chunks.forEach((chunk, index) => {
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page.drawText(chunk, {
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x: leftMargin,
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y: y - (index * 12), // Increased line spacing
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size: fontSize,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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});
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// Add explanatory text about certificate usage
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y -= (chunks.length * 12) + 40; // Space after verification data
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const explanatoryText = "Ce certificat doit être utilisé avec le document qu'il certifie pour être vérifié sur la page dédiée. Le document correspondant à ce certificat doit être téléchargé depuis LeCoffre et peut être conservé avec le certificat tant qu'il n'est pas modifié.";
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const explanatoryLines = this.splitTextToFit(helveticaObliqueFont, explanatoryText, width - (2 * leftMargin), 11);
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explanatoryLines.forEach((line, index) => {
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page.drawText(line, {
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x: leftMargin,
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y: y - (index * 14), // Slightly more spacing for readability
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size: 11,
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font: helveticaObliqueFont,
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color: rgb(0.3, 0.3, 0.3) // Slightly grayed out to distinguish from main content
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});
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});
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// Footer
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const pageCount = doc.getNumberOfPages();
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for (let i = 1; i <= pageCount; i++) {
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doc.setPage(i);
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doc.setFontSize(10);
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doc.setFont('helvetica', 'italic');
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doc.text(`Page ${i} sur ${pageCount}`, 105, 280, { align: 'center' });
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doc.text(`Généré le ${new Date().toLocaleString('fr-FR')}`, 105, 285, { align: 'center' });
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}
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const footerText1 = `Page 1 sur 1`;
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const footerText2 = `Généré le ${new Date().toLocaleString('fr-FR')}`;
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const footerWidth1 = helveticaObliqueFont.widthOfTextAtSize(footerText1, 10);
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const footerWidth2 = helveticaObliqueFont.widthOfTextAtSize(footerText2, 10);
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page.drawText(footerText1, {
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x: (width - footerWidth1) / 2,
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y: 35,
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size: 10,
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font: helveticaObliqueFont,
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color: rgb(0, 0, 0)
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});
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page.drawText(footerText2, {
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x: (width - footerWidth2) / 2,
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y: 25,
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size: 10,
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font: helveticaObliqueFont,
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color: rgb(0, 0, 0)
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});
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return doc.output('blob');
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const pdfBytes = await pdfDoc.save();
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return new Blob([pdfBytes], { type: 'application/pdf' });
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} catch (error) {
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console.error('Error generating certificate:', error);
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throw new Error('Failed to generate certificate');
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@ -143,21 +269,22 @@ export default class PdfService {
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/**
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* Split text to fit within a specified width
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* @param doc - jsPDF document instance
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* @param font - PDF font instance
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* @param text - Text to split
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* @param maxWidth - Maximum width in points
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* @param fontSize - Font size
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* @returns Array of text lines
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*/
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private splitTextToFit(doc: jsPDF, text: string, maxWidth: number): string[] {
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private splitTextToFit(font: any, text: string, maxWidth: number, fontSize: number): string[] {
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const lines: string[] = [];
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let currentLine = '';
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// Split by words first
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const words = text.split('');
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// Split by characters (pdf-lib doesn't have word-level text measurement)
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const chars = text.split('');
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for (const char of words) {
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for (const char of chars) {
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const testLine = currentLine + char;
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const testWidth = doc.getTextWidth(testLine);
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const testWidth = font.widthOfTextAtSize(testLine, fontSize);
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if (testWidth <= maxWidth) {
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currentLine = testLine;
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@ -202,92 +329,257 @@ export default class PdfService {
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*/
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public async generateNotaryCertificate(certificateData: CertificateData): Promise<Blob> {
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try {
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const doc = new jsPDF();
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// Create a new PDF document
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const pdfDoc = await PDFDocument.create();
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const page = pdfDoc.addPage([595, 842]); // A4 size
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const { width, height } = page.getSize();
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// Embed the standard font
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const helveticaFont = await pdfDoc.embedFont(StandardFonts.Helvetica);
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const helveticaBoldFont = await pdfDoc.embedFont(StandardFonts.HelveticaBold);
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const helveticaObliqueFont = await pdfDoc.embedFont(StandardFonts.HelveticaOblique);
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// Notary Information Section (Top Left)
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doc.setFontSize(12);
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doc.setFont('helvetica', 'bold');
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doc.text('Notaire Validateur:', 20, 30);
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doc.setFont('helvetica', 'normal');
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doc.text(certificateData.notary.name, 20, 37);
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page.drawText('Notaire Validateur:', {
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x: 20,
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y: height - 30,
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size: 12,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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page.drawText(certificateData.notary.name, {
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x: 20,
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y: height - 37,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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// Customer Information Section (Top Right)
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doc.setFont('helvetica', 'bold');
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doc.text('Fournisseur de Document:', 120, 30);
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doc.setFont('helvetica', 'normal');
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doc.text(`${certificateData.customer.firstName} ${certificateData.customer.lastName}`, 120, 37);
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doc.text(certificateData.customer.email, 120, 44);
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doc.text(certificateData.customer.postalAddress, 120, 51);
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page.drawText('Fournisseur de Document:', {
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x: 120,
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y: height - 30,
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size: 12,
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font: helveticaBoldFont,
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color: rgb(0, 0, 0)
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});
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page.drawText(`${certificateData.customer.firstName} ${certificateData.customer.lastName}`, {
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x: 120,
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y: height - 37,
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size: 12,
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font: helveticaFont,
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color: rgb(0, 0, 0)
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});
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||||
page.drawText(certificateData.customer.email, {
|
||||
x: 120,
|
||||
y: height - 44,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
|
||||
page.drawText(certificateData.customer.postalAddress, {
|
||||
x: 120,
|
||||
y: height - 51,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
|
||||
// Centered Title
|
||||
doc.setFontSize(20);
|
||||
doc.setFont('helvetica', 'bold');
|
||||
doc.text('Certificat Notarial de Validation de Document', 105, 80, { align: 'center' });
|
||||
const titleText = 'Certificat Notarial de Validation de Document';
|
||||
const titleWidth = helveticaBoldFont.widthOfTextAtSize(titleText, 20);
|
||||
page.drawText(titleText, {
|
||||
x: (width - titleWidth) / 2,
|
||||
y: height - 80,
|
||||
size: 20,
|
||||
font: helveticaBoldFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
|
||||
// Add a line separator
|
||||
doc.setLineWidth(0.5);
|
||||
doc.line(20, 90, 190, 90);
|
||||
page.drawLine({
|
||||
start: { x: 20, y: height - 90 },
|
||||
end: { x: width - 20, y: height - 90 },
|
||||
thickness: 0.5,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
|
||||
// Reset font for content
|
||||
doc.setFontSize(12);
|
||||
doc.setFont('helvetica', 'normal');
|
||||
|
||||
let yPosition = 110;
|
||||
let yPosition = height - 110;
|
||||
|
||||
// Document Information Section
|
||||
doc.setFont('helvetica', 'bold');
|
||||
doc.text('Informations du Document', 20, yPosition);
|
||||
yPosition += 10;
|
||||
page.drawText('Informations du Document', {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaBoldFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 10;
|
||||
|
||||
doc.setFont('helvetica', 'normal');
|
||||
doc.text(`Identifiant du Document: ${certificateData.metadata.documentUid}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`Type de Document: ${certificateData.metadata.documentType}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`Numéro de dossier: ${certificateData.folderUid}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`Créé le: ${certificateData.metadata.createdAt.toLocaleDateString('fr-FR')}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`Nom du fichier: ${certificateData.metadata.fileName}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`ID de transaction: ${certificateData.metadata.commitmentId}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`Dernière modification: ${certificateData.metadata.updatedAt.toLocaleDateString('fr-FR')}`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
doc.text(`Statut: ${certificateData.metadata.isDeleted ? 'Supprimé' : 'Actif'}`, 20, yPosition);
|
||||
yPosition += 15;
|
||||
page.drawText(`Identifiant du Document: ${certificateData.metadata.documentUid}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`Type de Document: ${certificateData.metadata.documentType}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`Numéro de dossier: ${certificateData.folderUid}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`Créé le: ${certificateData.metadata.createdAt.toLocaleDateString('fr-FR')}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`Nom du fichier: ${certificateData.metadata.fileName}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`ID de transaction: ${certificateData.metadata.commitmentId}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`Dernière modification: ${certificateData.metadata.updatedAt.toLocaleDateString('fr-FR')}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
page.drawText(`Statut: ${certificateData.metadata.isDeleted ? 'Supprimé' : 'Actif'}`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 15;
|
||||
|
||||
// Document Hash Section
|
||||
doc.setFont('helvetica', 'bold');
|
||||
doc.text('Intégrité du Document', 20, yPosition);
|
||||
yPosition += 10;
|
||||
page.drawText('Intégrité du Document', {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaBoldFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 10;
|
||||
|
||||
doc.setFont('helvetica', 'normal');
|
||||
doc.text(`Hash SHA256 du Document:`, 20, yPosition);
|
||||
yPosition += 7;
|
||||
page.drawText(`Hash SHA256 du Document:`, {
|
||||
x: 20,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
|
||||
// Split hash into multiple lines if needed
|
||||
const hash = certificateData.documentHash;
|
||||
const maxWidth = 170; // Available width for text
|
||||
const hashLines = this.splitTextToFit(doc, hash, maxWidth);
|
||||
const hashLines = this.splitTextToFit(helveticaFont, hash, maxWidth, 12);
|
||||
|
||||
for (const line of hashLines) {
|
||||
doc.text(line, 25, yPosition);
|
||||
yPosition += 7;
|
||||
page.drawText(line, {
|
||||
x: 25,
|
||||
y: yPosition,
|
||||
size: 12,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
yPosition -= 7;
|
||||
}
|
||||
yPosition += 8; // Extra space after hash
|
||||
yPosition -= 8; // Extra space after hash
|
||||
|
||||
yPosition -= 5;
|
||||
|
||||
// Footer
|
||||
const pageCount = doc.getNumberOfPages();
|
||||
for (let i = 1; i <= pageCount; i++) {
|
||||
doc.setPage(i);
|
||||
doc.setFontSize(10);
|
||||
doc.setFont('helvetica', 'italic');
|
||||
doc.text(`Page ${i} sur ${pageCount}`, 105, 280, { align: 'center' });
|
||||
doc.text(`Certificat Notarial - Généré le ${new Date().toLocaleString('fr-FR')}`, 105, 285, { align: 'center' });
|
||||
const footerText1 = `Page 1 sur 1`;
|
||||
const footerText2 = `Certificat Notarial - Généré le ${new Date().toLocaleString('fr-FR')}`;
|
||||
const footerWidth1 = helveticaObliqueFont.widthOfTextAtSize(footerText1, 10);
|
||||
const footerWidth2 = helveticaObliqueFont.widthOfTextAtSize(footerText2, 10);
|
||||
|
||||
page.drawText(footerText1, {
|
||||
x: (width - footerWidth1) / 2,
|
||||
y: 30,
|
||||
size: 10,
|
||||
font: helveticaObliqueFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
|
||||
page.drawText(footerText2, {
|
||||
x: (width - footerWidth2) / 2,
|
||||
y: 25,
|
||||
size: 10,
|
||||
font: helveticaObliqueFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
|
||||
// Add verification data as base64 in small font
|
||||
const verificationData = {
|
||||
documentHash: certificateData.documentHash,
|
||||
commitmentId: certificateData.metadata.commitmentId,
|
||||
merkleProof: certificateData.metadata.merkleProof || "N/A"
|
||||
};
|
||||
const verificationDataBase64 = btoa(JSON.stringify(verificationData));
|
||||
|
||||
// Split into chunks if too long
|
||||
const chunkSize = 80;
|
||||
const chunks = [];
|
||||
for (let j = 0; j < verificationDataBase64.length; j += chunkSize) {
|
||||
chunks.push(verificationDataBase64.slice(j, j + chunkSize));
|
||||
}
|
||||
|
||||
return doc.output('blob');
|
||||
chunks.forEach((chunk, index) => {
|
||||
page.drawText(chunk, {
|
||||
x: 20,
|
||||
y: 15 - (index * 3),
|
||||
size: 6,
|
||||
font: helveticaFont,
|
||||
color: rgb(0, 0, 0)
|
||||
});
|
||||
});
|
||||
|
||||
// Save the PDF
|
||||
const pdfBytes = await pdfDoc.save();
|
||||
return new Blob([pdfBytes], { type: 'application/pdf' });
|
||||
} catch (error) {
|
||||
console.error('Error generating notary certificate:', error);
|
||||
throw new Error('Failed to generate notary certificate');
|
||||
@ -309,4 +601,141 @@ export default class PdfService {
|
||||
throw error;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse a PDF certificate and extract document information
|
||||
* @param pdfBlob - The PDF file as a blob
|
||||
* @returns Promise<{documentHash: string, documentUid: string, commitmentId: string, merkleProof?: string}> - Extracted information
|
||||
*/
|
||||
public async parseCertificate(pdfBlob: Blob): Promise<{documentHash: string, documentUid: string, commitmentId: string, merkleProof?: string}> {
|
||||
return new Promise((resolve, reject) => {
|
||||
const fileReader = new FileReader();
|
||||
|
||||
fileReader.onload = async () => {
|
||||
try {
|
||||
// Convert PDF to text using browser's PDF capabilities
|
||||
const arrayBuffer = fileReader.result as ArrayBuffer;
|
||||
const pdfData = new Uint8Array(arrayBuffer);
|
||||
console.log("PDF data:", pdfData);
|
||||
|
||||
// Use a simple text extraction approach
|
||||
// This is a basic implementation - for production, consider using pdfjs-dist
|
||||
const text = await this.extractTextFromPdf(pdfData);
|
||||
|
||||
// Parse the extracted text to find our certificate data
|
||||
const parsedData = this.parseCertificateText(text);
|
||||
|
||||
if (!parsedData.documentHash) {
|
||||
throw new Error('Document hash not found in certificate');
|
||||
}
|
||||
|
||||
resolve(parsedData);
|
||||
} catch (error) {
|
||||
reject(error);
|
||||
}
|
||||
};
|
||||
|
||||
fileReader.onerror = () => {
|
||||
reject(new Error('Failed to read PDF file'));
|
||||
};
|
||||
|
||||
fileReader.readAsArrayBuffer(pdfBlob);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Extract text from PDF using browser capabilities
|
||||
* @param pdfData - PDF data as Uint8Array
|
||||
* @returns Promise<string> - Extracted text
|
||||
*/
|
||||
private async extractTextFromPdf(pdfData: Uint8Array): Promise<string> {
|
||||
console.log("extractTextFromPdf");
|
||||
|
||||
// Convert PDF data to string to search for base64 patterns
|
||||
const pdfString = new TextDecoder('utf-8').decode(pdfData);
|
||||
|
||||
// Look for base64 patterns in the PDF content
|
||||
// This is a simple approach that should work for our embedded data
|
||||
const base64Matches = pdfString.match(/([A-Za-z0-9+/]{80,}={0,2})/g);
|
||||
|
||||
if (base64Matches && base64Matches.length > 0) {
|
||||
console.log('Found base64 patterns in PDF:', base64Matches.length);
|
||||
// Return the longest base64 string (most likely our verification data)
|
||||
const longestBase64 = base64Matches.reduce((a, b) => a.length > b.length ? a : b);
|
||||
return longestBase64;
|
||||
}
|
||||
|
||||
// If no base64 found, return empty string
|
||||
console.log('No base64 patterns found in PDF');
|
||||
return '';
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse certificate text to extract specific fields
|
||||
* @param text - Extracted text from PDF (could be base64 or regular text)
|
||||
* @returns Parsed certificate data
|
||||
*/
|
||||
private parseCertificateText(text: string): {documentHash: string, documentUid: string, commitmentId: string, merkleProof?: string} {
|
||||
const result = {
|
||||
documentHash: '',
|
||||
documentUid: '',
|
||||
commitmentId: '',
|
||||
merkleProof: undefined as string | undefined
|
||||
};
|
||||
|
||||
// Check if the text is a base64 string (our new format)
|
||||
if (text.match(/^[A-Za-z0-9+/]+={0,2}$/)) {
|
||||
try {
|
||||
console.log('Attempting to decode base64 data:', text.substring(0, 50) + '...');
|
||||
const decodedData = atob(text);
|
||||
const verificationData = JSON.parse(decodedData);
|
||||
|
||||
console.log('Successfully decoded verification data:', verificationData);
|
||||
|
||||
if (verificationData.documentHash) {
|
||||
result.documentHash = verificationData.documentHash;
|
||||
}
|
||||
if (verificationData.commitmentId) {
|
||||
result.commitmentId = verificationData.commitmentId;
|
||||
}
|
||||
if (verificationData.merkleProof && verificationData.merkleProof !== "N/A") {
|
||||
result.merkleProof = verificationData.merkleProof;
|
||||
}
|
||||
|
||||
// If we successfully extracted data from base64, return early
|
||||
if (result.documentHash) {
|
||||
return result;
|
||||
}
|
||||
} catch (error) {
|
||||
console.log('Failed to decode base64 data:', error);
|
||||
}
|
||||
}
|
||||
|
||||
// Fallback to text parsing for older certificates
|
||||
// Extract document hash (64 character hex string)
|
||||
const hashMatch = text.match(/Hash SHA256 du Document:\s*([a-fA-F0-9]{64})/);
|
||||
if (hashMatch && hashMatch[1]) {
|
||||
result.documentHash = hashMatch[1];
|
||||
}
|
||||
|
||||
// Extract document UID
|
||||
const uidMatch = text.match(/UID du Document:\s*([^\n\r]+)/);
|
||||
if (uidMatch && uidMatch[1]) {
|
||||
result.documentUid = uidMatch[1].trim();
|
||||
}
|
||||
|
||||
// Extract commitment ID
|
||||
const commitmentMatch = text.match(/ID de transaction:\s*([^\n\r]+)/);
|
||||
if (commitmentMatch && commitmentMatch[1]) {
|
||||
result.commitmentId = commitmentMatch[1].trim();
|
||||
}
|
||||
|
||||
// Extract merkle proof
|
||||
const merkleProofMatch = text.match(/Preuve Merkle \(Blockchain\):\s*([^\n\r]+)/);
|
||||
if (merkleProofMatch && merkleProofMatch[1]) {
|
||||
result.merkleProof = merkleProofMatch[1].trim();
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user