✨(frontend) adapt export to divider block

We have a new block type, the divider block.
We have to adapt the export to handle this
new block type.

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+## Added
+
+- ✨(frontend) Custom block divider with export #698
+
 ## Changed
 
 - 🧑‍💻(frontend) change literal section open source #702

src/frontend/apps/e2e/__tests__/app-impress/doc-export.spec.ts

@@ -257,4 +257,47 @@ test.describe('Doc Export', () => {
 
     expect(pdfData.text).toContain('Hello World'); // This is the pdf text
   });
+
+  /**
+   * We cannot assert the line break is visible in the pdf but we can assert the
+   * line break is visible in the editor and that the pdf is generated.
+   */
+  test('it exports the doc with divider', async ({ page, browserName }) => {
+    const [randomDoc] = await createDoc(page, 'export-divider', browserName, 1);
+
+    const downloadPromise = page.waitForEvent('download', (download) => {
+      return download.suggestedFilename().includes(`${randomDoc}.pdf`);
+    });
+
+    const editor = page.locator('.ProseMirror');
+    await editor.click();
+    await editor.fill('Hello World');
+
+    // Trigger slash menu to show menu
+    await editor.locator('.bn-block-outer').last().fill('/');
+    await page.getByText('Add a horizontal line').click();
+
+    await expect(
+      editor.locator('.bn-block-content[data-content-type="divider"]'),
+    ).toBeVisible();
+
+    await page
+      .getByRole('button', {
+        name: 'download',
+      })
+      .click();
+
+    await page
+      .getByRole('button', {
+        name: 'Download',
+      })
+      .click();
+
+    const download = await downloadPromise;
+    expect(download.suggestedFilename()).toBe(`${randomDoc}.pdf`);
+
+    const pdfBuffer = await cs.toBuffer(await download.createReadStream());
+    const pdfData = await pdf(pdfBuffer);
+    expect(pdfData.text).toContain('Hello World');
+  });
 });

src/frontend/apps/impress/src/features/docs/doc-export/blocks-mapping/dividerDocx.tsx

@@ -0,0 +1,24 @@
+import { Paragraph } from 'docx';
+
+import { useCunninghamTheme } from '@/cunningham';
+
+import { DocsExporterDocx } from '../types';
+
+export const blockMappingDividerDocx: DocsExporterDocx['mappings']['blockMapping']['divider'] =
+  () => {
+    const { colorsTokens } = useCunninghamTheme.getState();
+
+    return new Paragraph({
+      spacing: {
+        before: 200,
+      },
+      border: {
+        top: {
+          color: colorsTokens()['greyscale-300'],
+          size: 1,
+          style: 'single',
+          space: 1,
+        },
+      },
+    });
+  };

src/frontend/apps/impress/src/features/docs/doc-export/blocks-mapping/dividerPDF.tsx

@@ -0,0 +1,20 @@
+import { Text } from '@react-pdf/renderer';
+
+import { useCunninghamTheme } from '@/cunningham';
+
+import { DocsExporterPDF } from '../types';
+
+export const blockMappingDividerPDF: DocsExporterPDF['mappings']['blockMapping']['divider'] =
+  () => {
+    const { colorsTokens } = useCunninghamTheme.getState();
+
+    return (
+      <Text
+        style={{
+          marginVertical: 10,
+          backgroundColor: colorsTokens()['greyscale-300'],
+          height: '2px',
+        }}
+      />
+    );
+  };

src/frontend/apps/impress/src/features/docs/doc-export/blocks-mapping/index.ts

@@ -1,3 +1,5 @@
+export * from './dividerDocx';
+export * from './dividerPDF';
 export * from './headingPDF';
 export * from './paragraphPDF';
 export * from './quoteDocx';

src/frontend/apps/impress/src/features/docs/doc-export/mappingDocx.tsx

@@ -1,12 +1,16 @@
 import { docxDefaultSchemaMappings } from '@blocknote/xl-docx-exporter';
 
-import { blockMappingQuoteDocx } from './blocks-mapping/';
+import {
+  blockMappingDividerDocx,
+  blockMappingQuoteDocx,
+} from './blocks-mapping/';
 import { DocsExporterDocx } from './types';
 
 export const docxDocsSchemaMappings: DocsExporterDocx['mappings'] = {
   ...docxDefaultSchemaMappings,
   blockMapping: {
     ...docxDefaultSchemaMappings.blockMapping,
+    divider: blockMappingDividerDocx,
     quote: blockMappingQuoteDocx,
   },
 };

src/frontend/apps/impress/src/features/docs/doc-export/mappingPDF.tsx

@@ -1,6 +1,7 @@
 import { pdfDefaultSchemaMappings } from '@blocknote/xl-pdf-exporter';
 
 import {
+  blockMappingDividerPDF,
   blockMappingHeadingPDF,
   blockMappingParagraphPDF,
   blockMappingQuotePDF,
@@ -14,6 +15,7 @@ export const pdfDocsSchemaMappings: DocsExporterPDF['mappings'] = {
     ...pdfDefaultSchemaMappings.blockMapping,
     heading: blockMappingHeadingPDF,
     paragraph: blockMappingParagraphPDF,
+    divider: blockMappingDividerPDF,
     quote: blockMappingQuotePDF,
     table: blockMappingTablePDF,
   },