151060204d
- Add web worker for PDF attachment processing to improve performance and prevent UI blocking - Create add-attachments.worker.js with TypeScript definitions for type safety - Implement worker message handling with success and error responses - Update nginx.conf to use Cross-Origin-Resource-Policy instead of Cross-Origin-Embedder-Policy for better cross-origin resource sharing - Refactor add-attachments.ts to use worker-based processing with transferable objects - Update main.ts to add home logo click handler for navigation - Improve error handling with worker error event listener - Add validation checks for PDF file availability before processing attachments
70 lines
1.9 KiB
JavaScript
70 lines
1.9 KiB
JavaScript
self.importScripts('/coherentpdf.browser.min.js');
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function addAttachmentsToPDFInWorker(pdfBuffer, attachmentBuffers, attachmentNames) {
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try {
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const uint8Array = new Uint8Array(pdfBuffer);
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let pdf;
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try {
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pdf = coherentpdf.fromMemory(uint8Array, '');
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} catch (error) {
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self.postMessage({
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status: 'error',
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message: `Failed to load PDF. Error: ${error.message || error}`
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});
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return;
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}
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// Add each attachment to the PDF
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for (let i = 0; i < attachmentBuffers.length; i++) {
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try {
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const attachmentData = new Uint8Array(attachmentBuffers[i]);
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const attachmentName = attachmentNames[i];
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// Attach file at document level (page 0)
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coherentpdf.attachFileFromMemory(attachmentData, attachmentName, pdf);
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} catch (error) {
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console.warn(`Failed to attach file ${attachmentNames[i]}:`, error);
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self.postMessage({
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status: 'error',
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message: `Failed to attach file ${attachmentNames[i]}: ${error.message || error}`
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});
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coherentpdf.deletePdf(pdf);
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return;
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}
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}
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// Save the modified PDF
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const modifiedBytes = coherentpdf.toMemory(pdf, false, false);
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coherentpdf.deletePdf(pdf);
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const buffer = modifiedBytes.buffer.slice(
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modifiedBytes.byteOffset,
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modifiedBytes.byteOffset + modifiedBytes.byteLength
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);
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self.postMessage({
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status: 'success',
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modifiedPDF: buffer
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}, [buffer]);
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} catch (error) {
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self.postMessage({
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status: 'error',
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message: error instanceof Error
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? error.message
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: 'Unknown error occurred while adding attachments.'
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});
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}
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}
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self.onmessage = (e) => {
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if (e.data.command === 'add-attachments') {
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addAttachmentsToPDFInWorker(
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e.data.pdfBuffer,
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e.data.attachmentBuffers,
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e.data.attachmentNames
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);
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}
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};
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