feat: add best-effort PDF source converters (txt, html, docx)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-30 09:12:43 +02:00
parent 16b4f28b42
commit 05ff96b8b3
2 changed files with 106 additions and 0 deletions
@@ -0,0 +1,64 @@
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import os from 'node:os';
+import { PDFDocument, StandardFonts } from 'pdf-lib';
+import { registerDocumentConverters } from '../../src/converters/document.js';
+import { resolve } from '../../src/converters/registry.js';
+
+let tmpDir;
+let pdfFixturePath;
+
+beforeAll(async () => {
+  registerDocumentConverters();
+  tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'converter-document-from-pdf-'));
+
+  const pdfDoc = await PDFDocument.create();
+  const page = pdfDoc.addPage([600, 400]);
+  const font = await pdfDoc.embedFont(StandardFonts.Helvetica);
+  page.drawText('Extractable fixture text', { x: 50, y: 350, size: 24, font });
+  const bytes = await pdfDoc.save();
+  pdfFixturePath = path.join(tmpDir, 'fixture.pdf');
+  await fs.writeFile(pdfFixturePath, bytes);
+});
+
+afterAll(async () => {
+  await fs.rm(tmpDir, { recursive: true, force: true });
+});
+
+describe('PDF source document converters', () => {
+  it('extracts text from PDF to TXT', async () => {
+    const outputPath = path.join(tmpDir, 'output.txt');
+    const entry = resolve('pdf', 'txt');
+
+    await entry.convert(pdfFixturePath, outputPath);
+
+    const text = await fs.readFile(outputPath, 'utf8');
+    expect(text).toContain('Extractable fixture text');
+  });
+
+  it('extracts text from PDF to HTML', async () => {
+    const outputPath = path.join(tmpDir, 'output.html');
+    const entry = resolve('pdf', 'html');
+
+    await entry.convert(pdfFixturePath, outputPath);
+
+    const html = await fs.readFile(outputPath, 'utf8');
+    expect(html).toContain('Extractable fixture text');
+    expect(html).toContain('<p>');
+  });
+
+  it('reconstructs PDF text into a DOCX (best-effort)', async () => {
+    const outputPath = path.join(tmpDir, 'output.docx');
+    const entry = resolve('pdf', 'docx');
+
+    await entry.convert(pdfFixturePath, outputPath);
+
+    const stat = await fs.stat(outputPath);
+    expect(stat.size).toBeGreaterThan(0);
+
+    const mammoth = await import('mammoth');
+    const result = await mammoth.default.convertToHtml({ path: outputPath });
+    expect(result.value).toContain('Extractable fixture text');
+  });
+});