implements page-numbers-plan
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import { expect, test, type Page } from '@playwright/test';
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import { PDFDocument } from 'pdf-lib';
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import {
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createEncryptedPdf,
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createPdf,
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createPreRotatedPdf,
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dropFiles,
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expectPdfDownload,
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getPageContentText,
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getPageText,
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pdfDropzone,
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trackPageErrors
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} from './helpers';
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const downloadPaginated = async (page: Page, fileName: RegExp) => {
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const downloadPromise = page.waitForEvent('download');
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await page.getByRole('button', { name: 'Paginieren & herunterladen' }).click();
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return expectPdfDownload(await downloadPromise, fileName);
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};
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test('pagination stamps every page with an Aktenzeichen and the configured start number', async ({
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page
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}) => {
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const pageErrors = trackPageErrors(page);
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await page.goto('/tools/pagination');
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await dropFiles(page, pdfDropzone(page), [
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{ name: 'akte.pdf', mimeType: 'application/pdf', buffer: await createPdf(3, 'Akte') }
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]);
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await expect(page.getByText('Seite 1 von 3')).toBeVisible();
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await page.locator('#pagination-start').fill('26');
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await page.locator('#pagination-text').fill('123 Ja 60/26');
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await expect(page.getByTestId('pagination-example')).toContainText(
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'Beispiel: 123 Ja 60/26, Bl. 26'
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);
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await page.getByRole('button', { name: 'Nächste Seite' }).click();
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await expect(page.getByText('Seite 2 von 3')).toBeVisible();
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await expect(page.getByTestId('pagination-preview')).toContainText('123 Ja 60/26, Bl. 27');
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const bytes = await downloadPaginated(page, /^akte_paginiert\.pdf$/);
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const output = await PDFDocument.load(bytes);
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expect(output.getPageCount()).toBe(3);
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expect(getPageText(output, 0)).toContain('123 Ja 60/26, Bl. 26');
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expect(getPageText(output, 1)).toContain('123 Ja 60/26, Bl. 27');
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expect(getPageText(output, 2)).toContain('123 Ja 60/26, Bl. 28');
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expect(pageErrors).toEqual([]);
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});
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test('pagination can keep the additional text on the first page only', async ({ page }) => {
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const pageErrors = trackPageErrors(page);
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await page.goto('/tools/pagination');
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await dropFiles(page, pdfDropzone(page), [
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{ name: 'akte.pdf', mimeType: 'application/pdf', buffer: await createPdf(3, 'Akte') }
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]);
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await page.locator('#pagination-start').fill('7');
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await page.locator('#pagination-text').fill('AZ 7/26');
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await page.locator('#pagination-format').selectOption('s');
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await page.getByLabel('Nur auf der ersten Seite').check();
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await expect(page.getByTestId('pagination-example')).toContainText('AZ 7/26, S. 7');
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await page.getByRole('button', { name: 'Nächste Seite' }).click();
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await expect(page.getByTestId('pagination-preview')).toHaveText('S. 8');
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const bytes = await downloadPaginated(page, /^akte_paginiert\.pdf$/);
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const output = await PDFDocument.load(bytes);
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expect(output.getPageCount()).toBe(3);
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expect(getPageText(output, 0)).toContain('AZ 7/26, S. 7');
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expect(getPageText(output, 1)).toContain('S. 8');
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expect(getPageText(output, 1)).not.toContain('AZ 7/26');
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expect(getPageText(output, 2)).toContain('S. 9');
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expect(pageErrors).toEqual([]);
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});
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test('pagination supports number-only labels and jumps to a page', async ({ page }) => {
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const pageErrors = trackPageErrors(page);
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await page.goto('/tools/pagination');
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await dropFiles(page, pdfDropzone(page), [
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{ name: 'nummern.pdf', mimeType: 'application/pdf', buffer: await createPdf(11, 'Nummern') }
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]);
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await page.locator('#pagination-start').fill('42');
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await page.locator('#pagination-format').selectOption('nummer');
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await expect(page.getByTestId('pagination-example')).toHaveText('Beispiel: 42');
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await page.getByLabel('Springe zu Seite').fill('11');
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await expect(page.getByText('Seite 11 von 11')).toBeVisible();
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await expect(page.getByTestId('pagination-preview')).toHaveText('52');
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const bytes = await downloadPaginated(page, /^nummern_paginiert\.pdf$/);
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const output = await PDFDocument.load(bytes);
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expect(output.getPageCount()).toBe(11);
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expect(getPageText(output, 0)).toContain('42');
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expect(getPageText(output, 10)).toContain('52');
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expect(pageErrors).toEqual([]);
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});
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test('pagination keeps the page number upright on rotated scans', async ({ page }) => {
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const pageErrors = trackPageErrors(page);
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await page.goto('/tools/pagination');
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await dropFiles(page, pdfDropzone(page), [
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{
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name: 'gedreht.pdf',
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mimeType: 'application/pdf',
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buffer: await createPreRotatedPdf(2, 'Gedreht')
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}
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]);
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const bytes = await downloadPaginated(page, /^gedreht_paginiert\.pdf$/);
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const output = await PDFDocument.load(bytes);
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expect(output.getPageCount()).toBe(2);
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// Page 1 is stored with /Rotate 90: the text is counter-rotated so it reads
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// horizontally on screen instead of sideways.
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const rotatedContent = getPageContentText(output, 0);
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expect(getPageText(output, 0)).toContain('Bl. 1');
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const rotatedMatrix =
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/([-\d.]+) ([-\d.]+) ([-\d.]+) ([-\d.]+) ([-\d.]+) ([-\d.]+) Tm\n<426C2E2031> Tj/.exec(
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rotatedContent
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);
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expect(rotatedMatrix).not.toBeNull();
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const [a, b, c, d, x, y] = rotatedMatrix!.slice(1).map(Number);
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// 90° counter-clockwise in user space cancels the viewer's page rotation.
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expect(Math.abs(a)).toBeLessThan(0.001);
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expect(b).toBeCloseTo(1, 3);
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expect(c).toBeCloseTo(-1, 3);
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expect(Math.abs(d)).toBeLessThan(0.001);
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// Visual bottom center of the 594×420 display: 28 pt margin, centered.
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expect(x).toBeGreaterThan(384);
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expect(x).toBeLessThan(396);
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expect(y).toBeGreaterThan(280);
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expect(y).toBeLessThan(292);
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const plainContent = getPageContentText(output, 1);
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expect(getPageText(output, 1)).toContain('Bl. 2');
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expect(plainContent).toMatch(/1 0 0 1 [-\d.]+ [-\d.]+ Tm\n<426C2E2032> Tj/);
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expect(pageErrors).toEqual([]);
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});
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test('pagination explains how to handle a password-protected PDF', async ({ page }) => {
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const pageErrors = trackPageErrors(page);
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await page.goto('/tools/pagination');
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await dropFiles(page, pdfDropzone(page), [
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{
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name: 'geschuetzt.pdf',
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mimeType: 'application/pdf',
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buffer: await createEncryptedPdf(1, 'Geschützt', 'test-passwort')
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}
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]);
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await expect(page.getByRole('alert')).toContainText('passwortgeschützt');
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await expect(page.getByRole('alert')).toContainText('Passwort entfernen');
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expect(pageErrors).toEqual([]);
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});
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test('merge hands the merged PDF over to pagination', async ({ page }) => {
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const pageErrors = trackPageErrors(page);
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await page.goto('/tools/merge');
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await dropFiles(page, pdfDropzone(page), [
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{ name: 'eins.pdf', mimeType: 'application/pdf', buffer: await createPdf(1, 'Eins') },
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{ name: 'zwei.pdf', mimeType: 'application/pdf', buffer: await createPdf(2, 'Zwei') }
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]);
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await page.getByRole('button', { name: 'Zusammenfügen & paginieren' }).click();
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await expect(page).toHaveURL(/\/tools\/pagination$/);
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await expect(page.getByText('Seite 1 von 3')).toBeVisible({ timeout: 15_000 });
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const bytes = await downloadPaginated(page, /^zusammengefuegt_paginiert\.pdf$/);
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const output = await PDFDocument.load(bytes);
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expect(output.getPageCount()).toBe(3);
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expect(getPageText(output, 0)).toContain('Bl. 1');
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expect(getPageText(output, 1)).toContain('Bl. 2');
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expect(getPageText(output, 2)).toContain('Bl. 3');
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expect(pageErrors).toEqual([]);
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});
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