671297320e
- Implement core PDF manipulation tools (split, merge, convert, etc.) - Add state management and UI utilities - Set up build configuration with Vite and TailwindCSS - Include essential dependencies for PDF processing - Add gitignore and basic project configuration files
61 lines
2.6 KiB
TypeScript
61 lines
2.6 KiB
TypeScript
import { showLoader, hideLoader, showAlert } from '../ui.js';
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import { downloadFile } from '../utils/helpers.js';
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import { state } from '../state.js';
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import JSZip from 'jszip';
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import { PDFDocument as PDFLibDocument } from 'pdf-lib';
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export async function extractPages() {
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// @ts-expect-error TS(2339) FIXME: Property 'value' does not exist on type 'HTMLEleme... Remove this comment to see the full error message
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const pageInput = document.getElementById('pages-to-extract').value;
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if (!pageInput.trim()) {
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showAlert('Invalid Input', 'Please enter page numbers to extract.');
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return;
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}
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showLoader('Extracting pages...');
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try {
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const totalPages = state.pdfDoc.getPageCount();
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const indicesToExtract = new Set();
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const ranges = pageInput.split(',');
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for (const range of ranges) {
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const trimmedRange = range.trim();
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if (trimmedRange.includes('-')) {
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const [start, end] = trimmedRange.split('-').map(Number);
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if (isNaN(start) || isNaN(end) || start < 1 || end > totalPages || start > end) continue;
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for (let i = start; i <= end; i++) indicesToExtract.add(i - 1);
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} else {
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const pageNum = Number(trimmedRange);
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if (isNaN(pageNum) || pageNum < 1 || pageNum > totalPages) continue;
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indicesToExtract.add(pageNum - 1);
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}
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}
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if (indicesToExtract.size === 0) {
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showAlert('Invalid Input', 'No valid pages selected for extraction.');
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hideLoader();
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return;
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}
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const zip = new JSZip();
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// @ts-expect-error TS(2362) FIXME: The left-hand side of an arithmetic operation must... Remove this comment to see the full error message
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const sortedIndices = Array.from(indicesToExtract).sort((a, b) => a - b);
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for (const index of sortedIndices) {
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const newPdf = await PDFLibDocument.create();
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const [copiedPage] = await newPdf.copyPages(state.pdfDoc, [index as number]);
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newPdf.addPage(copiedPage);
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const newPdfBytes = await newPdf.save();
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// @ts-expect-error TS(2365) FIXME: Operator '+' cannot be applied to types 'unknown' ... Remove this comment to see the full error message
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zip.file(`page-${index + 1}.pdf`, newPdfBytes);
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}
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const zipBlob = await zip.generateAsync({ type: 'blob' });
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downloadFile(zipBlob, 'extracted-pages.zip');
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} catch (e) {
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console.error(e);
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showAlert('Error', 'Could not extract pages.');
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} finally {
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hideLoader();
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}
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} |