2025-07-01 16:59:40 +02:00

311 lines
9.9 KiB
TypeScript

import { saveAs } from 'file-saver';
import jsPDF from 'jspdf';
export interface CustomerInfo {
firstName: string;
lastName: string;
postalAddress: string;
email: string;
}
export interface NotaryInfo {
name: string;
// Add more notary fields as needed
}
export interface Metadata {
fileName: string,
createdAt: Date,
isDeleted: boolean,
updatedAt: Date,
commitmentId: string,
documentUid: string;
documentType: string;
}
export interface CertificateData {
customer: CustomerInfo;
notary: NotaryInfo;
folderUid: string;
documentHash: string;
metadata: Metadata;
}
export default class PdfService {
private static instance: PdfService;
public static getInstance(): PdfService {
if (!PdfService.instance) {
PdfService.instance = new PdfService();
}
return PdfService.instance;
}
/**
* Generate a certificate PDF for a document
* @param certificateData - Data needed for the certificate
* @returns Promise<Blob> - The generated PDF as a blob
*/
public async generateCertificate(certificateData: CertificateData): Promise<Blob> {
try {
const doc = new jsPDF();
// Notary Information Section (Top Left)
doc.setFontSize(12);
doc.setFont('helvetica', 'bold');
doc.text('Notaire Validateur:', 20, 30);
doc.setFont('helvetica', 'normal');
doc.text(certificateData.notary.name, 20, 37);
// Customer Information Section (Top Right)
doc.setFont('helvetica', 'bold');
doc.text('Fournisseur de Document:', 120, 30);
doc.setFont('helvetica', 'normal');
doc.text(`${certificateData.customer.firstName} ${certificateData.customer.lastName}`, 120, 37);
doc.text(certificateData.customer.email, 120, 44);
doc.text(certificateData.customer.postalAddress, 120, 51);
// Centered Title
doc.setFontSize(20);
doc.setFont('helvetica', 'bold');
doc.text('Certificat de Validation de Document', 105, 80, { align: 'center' });
// Add a line separator
doc.setLineWidth(0.5);
doc.line(20, 90, 190, 90);
// Reset font for content
doc.setFontSize(12);
doc.setFont('helvetica', 'normal');
let yPosition = 110;
// Document Information Section
doc.setFont('helvetica', 'bold');
doc.text('Informations du Document', 20, yPosition);
yPosition += 10;
doc.setFont('helvetica', 'normal');
doc.text(`UID du Document: ${certificateData.metadata.documentUid}`, 20, yPosition);
yPosition += 7;
doc.text(`Type de Document: ${certificateData.metadata.documentType}`, 20, yPosition);
yPosition += 7;
doc.text(`UID du 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;
// Document Hash Section
doc.setFont('helvetica', 'bold');
doc.text('Intégrité du Document', 20, yPosition);
yPosition += 10;
doc.setFont('helvetica', 'normal');
doc.text(`Hash SHA256 du Document:`, 20, yPosition);
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);
for (const line of hashLines) {
doc.text(line, 25, yPosition);
yPosition += 7;
}
yPosition += 8; // Extra space after hash
// 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(`Généré le ${new Date().toLocaleString('fr-FR')}`, 105, 285, { align: 'center' });
}
return doc.output('blob');
} catch (error) {
console.error('Error generating certificate:', error);
throw new Error('Failed to generate certificate');
}
}
/**
* Split text to fit within a specified width
* @param doc - jsPDF document instance
* @param text - Text to split
* @param maxWidth - Maximum width in points
* @returns Array of text lines
*/
private splitTextToFit(doc: jsPDF, text: string, maxWidth: number): string[] {
const lines: string[] = [];
let currentLine = '';
// Split by words first
const words = text.split('');
for (const char of words) {
const testLine = currentLine + char;
const testWidth = doc.getTextWidth(testLine);
if (testWidth <= maxWidth) {
currentLine = testLine;
} else {
if (currentLine) {
lines.push(currentLine);
currentLine = char;
} else {
// If even a single character is too wide, force a break
lines.push(char);
}
}
}
if (currentLine) {
lines.push(currentLine);
}
return lines;
}
/**
* Download a certificate PDF
* @param certificateData - Data needed for the certificate
* @param filename - Optional filename for the download
*/
public async downloadCertificate(certificateData: CertificateData, filename?: string): Promise<void> {
try {
const pdfBlob = await this.generateCertificate(certificateData);
const defaultFilename = `certificate_${certificateData.metadata.documentUid}_${new Date().toISOString().split('T')[0]}.pdf`;
saveAs(pdfBlob, filename || defaultFilename);
} catch (error) {
console.error('Error downloading certificate:', error);
throw error;
}
}
/**
* Generate certificate for notary documents
* @param certificateData - Data needed for the certificate
* @returns Promise<Blob> - The generated PDF as a blob
*/
public async generateNotaryCertificate(certificateData: CertificateData): Promise<Blob> {
try {
const doc = new jsPDF();
// Notary Information Section (Top Left)
doc.setFontSize(12);
doc.setFont('helvetica', 'bold');
doc.text('Notaire Validateur:', 20, 30);
doc.setFont('helvetica', 'normal');
doc.text(certificateData.notary.name, 20, 37);
// Customer Information Section (Top Right)
doc.setFont('helvetica', 'bold');
doc.text('Fournisseur de Document:', 120, 30);
doc.setFont('helvetica', 'normal');
doc.text(`${certificateData.customer.firstName} ${certificateData.customer.lastName}`, 120, 37);
doc.text(certificateData.customer.email, 120, 44);
doc.text(certificateData.customer.postalAddress, 120, 51);
// Centered Title
doc.setFontSize(20);
doc.setFont('helvetica', 'bold');
doc.text('Certificat Notarial de Validation de Document', 105, 80, { align: 'center' });
// Add a line separator
doc.setLineWidth(0.5);
doc.line(20, 90, 190, 90);
// Reset font for content
doc.setFontSize(12);
doc.setFont('helvetica', 'normal');
let yPosition = 110;
// Document Information Section
doc.setFont('helvetica', 'bold');
doc.text('Informations du Document', 20, yPosition);
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;
// Document Hash Section
doc.setFont('helvetica', 'bold');
doc.text('Intégrité du Document', 20, yPosition);
yPosition += 10;
doc.setFont('helvetica', 'normal');
doc.text(`Hash SHA256 du Document:`, 20, yPosition);
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);
for (const line of hashLines) {
doc.text(line, 25, yPosition);
yPosition += 7;
}
yPosition += 8; // Extra space after hash
// 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 ${new Date().toLocaleString('fr-FR')}`, 105, 285, { align: 'center' });
}
return doc.output('blob');
} catch (error) {
console.error('Error generating notary certificate:', error);
throw new Error('Failed to generate notary certificate');
}
}
/**
* Download a notary certificate PDF
* @param certificateData - Data needed for the certificate
* @param filename - Optional filename for the download
*/
public async downloadNotaryCertificate(certificateData: CertificateData, filename?: string): Promise<void> {
try {
const pdfBlob = await this.generateNotaryCertificate(certificateData);
const defaultFilename = `notary_certificate_${certificateData.metadata.documentUid}_${new Date().toISOString().split('T')[0]}.pdf`;
saveAs(pdfBlob, filename || defaultFilename);
} catch (error) {
console.error('Error downloading notary certificate:', error);
throw error;
}
}
}