/**
* PDF Export module for Atmosphere Docs.
*
* Uses html2pdf.js to convert the editor content into a downloadable PDF.
* Always exports in light mode regardless of current theme.
*/
import type { PdfExportOptions } from './types.js';
/**
* Build a self-contained HTML string suitable for PDF rendering.
* Extracted as a pure function for testability.
*/
export function buildPdfHtml(editorHtml: string, title: string): string {
return `
${editorHtml}
`;
}
/**
* Derive a safe filename from a document title.
*/
export function pdfFilename(title: string | null | undefined): string {
const clean = (title || '').trim() || 'Untitled Document';
return clean.replace(/[^a-zA-Z0-9_\- ]/g, '').replace(/\s+/g, '_');
}
/**
* Generate and download a PDF from editor content.
* This is the DOM-coupled entry point — not unit-testable.
*/
export async function exportPdf({ editorHtml, title }: PdfExportOptions): Promise {
const html2pdf = (await import('html2pdf.js')).default;
const container = document.createElement('div');
container.innerHTML = buildPdfHtml(editorHtml, title);
container.style.position = 'fixed';
container.style.left = '-9999px';
container.style.top = '0';
container.style.width = '8.5in';
container.style.background = '#fff';
container.style.color = '#1a1815';
document.body.appendChild(container);
try {
await html2pdf()
.set({
margin: [0.5, 0.5, 0.5, 0.5],
filename: `${pdfFilename(title)}.pdf`,
image: { type: 'jpeg', quality: 0.95 },
html2canvas: {
scale: 2,
useCORS: true,
backgroundColor: '#ffffff',
},
jsPDF: {
unit: 'in',
format: 'letter',
orientation: 'portrait',
},
})
.from(container)
.save();
} finally {
document.body.removeChild(container);
}
}