Function main

examples/06-metadata/document-dates.ts:13–144

()

import { formatBytes, loadFixture, saveOutput } from "../utils";

async function main() {
  console.log("Working with document dates...\n");

  // === Reading dates from existing PDFs ===
  console.log("=== Reading Dates from Existing PDF ===\n");

  const existingBytes = await loadFixture("basic", "rot0.pdf");
  const existingPdf = await PDF.load(existingBytes);

  const existingCreation = existingPdf.getCreationDate();
  const existingModification = existingPdf.getModificationDate();

  console.log("Existing PDF dates:");

  if (existingCreation) {
    console.log(`  Creation Date: ${existingCreation.toISOString()}`);
    console.log(`    Local: ${existingCreation.toLocaleString()}`);
    console.log(`    Timestamp: ${existingCreation.getTime()}`);
  } else {
    console.log("  Creation Date: (not set)");
  }

  if (existingModification) {
    console.log(`  Modification Date: ${existingModification.toISOString()}`);
    console.log(`    Local: ${existingModification.toLocaleString()}`);
  } else {
    console.log("  Modification Date: (not set)");
  }

  // === Setting dates on a new PDF ===
  console.log("\n=== Setting Dates on New PDF ===\n");

  const pdf = PDF.create();
  pdf.addPage({ size: "letter" });

  const page = pdf.getPage(0);
  if (page) {
    page.drawText("Document Date Examples", {
      x: 180,
      y: page.height - 50,
      size: 20,
      color: black,
    });
  }

  // Set creation date to a specific date/time
  const creationDate = new Date("2024-01-15T14:30:00-05:00"); // EST timezone
  pdf.setCreationDate(creationDate);
  console.log(`Set creation date: ${creationDate.toISOString()}`);

  // Set modification date to now
  const modificationDate = new Date();
  pdf.setModificationDate(modificationDate);
  console.log(`Set modification date: ${modificationDate.toISOString()}`);

  // === Different ways to create dates ===
  console.log("\n=== Different Date Creation Methods ===\n");