setup i18n and ported all tools to standalone pages
This commit is contained in:
abdullahalam123
240
src/js/logic/linearize-pdf-page.ts
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240
src/js/logic/linearize-pdf-page.ts
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import { showAlert } from '../ui.js';
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import { downloadFile, formatBytes, initializeQpdf, readFileAsArrayBuffer } from '../utils/helpers.js';
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import { icons, createIcons } from 'lucide';
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import JSZip from 'jszip';
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interface PageState {
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files: File[];
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}
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const pageState: PageState = {
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files: [],
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};
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function resetState() {
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pageState.files = [];
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const fileDisplayArea = document.getElementById('file-display-area');
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if (fileDisplayArea) fileDisplayArea.innerHTML = '';
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const toolOptions = document.getElementById('tool-options');
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if (toolOptions) toolOptions.classList.add('hidden');
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const fileControls = document.getElementById('file-controls');
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if (fileControls) fileControls.classList.add('hidden');
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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if (fileInput) fileInput.value = '';
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}
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async function updateUI() {
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const fileDisplayArea = document.getElementById('file-display-area');
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const toolOptions = document.getElementById('tool-options');
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const fileControls = document.getElementById('file-controls');
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if (!fileDisplayArea) return;
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fileDisplayArea.innerHTML = '';
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if (pageState.files.length > 0) {
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pageState.files.forEach((file, index) => {
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const fileDiv = document.createElement('div');
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fileDiv.className = 'flex items-center justify-between bg-gray-700 p-3 rounded-lg text-sm';
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const infoContainer = document.createElement('div');
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infoContainer.className = 'flex flex-col overflow-hidden';
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const nameSpan = document.createElement('div');
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nameSpan.className = 'truncate font-medium text-gray-200 text-sm mb-1';
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nameSpan.textContent = file.name;
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const metaSpan = document.createElement('div');
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metaSpan.className = 'text-xs text-gray-400';
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metaSpan.textContent = formatBytes(file.size);
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infoContainer.append(nameSpan, metaSpan);
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const removeBtn = document.createElement('button');
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removeBtn.className = 'ml-4 text-red-400 hover:text-red-300 flex-shrink-0';
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removeBtn.innerHTML = '<i data-lucide="trash-2" class="w-4 h-4"></i>';
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removeBtn.onclick = function () {
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pageState.files.splice(index, 1);
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updateUI();
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};
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fileDiv.append(infoContainer, removeBtn);
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fileDisplayArea.appendChild(fileDiv);
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});
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createIcons({ icons });
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if (toolOptions) toolOptions.classList.remove('hidden');
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if (fileControls) fileControls.classList.remove('hidden');
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} else {
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if (toolOptions) toolOptions.classList.add('hidden');
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if (fileControls) fileControls.classList.add('hidden');
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}
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}
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function handleFileSelect(files: FileList | null) {
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if (files && files.length > 0) {
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const pdfFiles = Array.from(files).filter(f => f.type === 'application/pdf' || f.name.toLowerCase().endsWith('.pdf'));
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if (pdfFiles.length > 0) {
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pageState.files.push(...pdfFiles);
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updateUI();
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}
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}
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}
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async function linearizePdf() {
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const pdfFiles = pageState.files.filter(
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(file: File) => file.type === 'application/pdf'
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);
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if (!pdfFiles || pdfFiles.length === 0) {
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showAlert('No PDF Files', 'Please upload at least one PDF file.');
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return;
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}
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const loaderModal = document.getElementById('loader-modal');
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const loaderText = document.getElementById('loader-text');
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if (loaderModal) loaderModal.classList.remove('hidden');
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if (loaderText) loaderText.textContent = 'Optimizing PDFs for web view (linearizing)...';
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const zip = new JSZip();
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let qpdf: any;
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let successCount = 0;
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let errorCount = 0;
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try {
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qpdf = await initializeQpdf();
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for (let i = 0; i < pdfFiles.length; i++) {
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const file = pdfFiles[i];
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const inputPath = `/input_${i}.pdf`;
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const outputPath = `/output_${i}.pdf`;
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if (loaderText) loaderText.textContent = `Optimizing ${file.name} (${i + 1}/${pdfFiles.length})...`;
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try {
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const fileBuffer = await readFileAsArrayBuffer(file);
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const uint8Array = new Uint8Array(fileBuffer as ArrayBuffer);
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qpdf.FS.writeFile(inputPath, uint8Array);
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const args = [inputPath, '--linearize', outputPath];
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qpdf.callMain(args);
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const outputFile = qpdf.FS.readFile(outputPath, { encoding: 'binary' });
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if (!outputFile || outputFile.length === 0) {
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console.error(
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`Linearization resulted in an empty file for ${file.name}.`
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);
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throw new Error(`Processing failed for ${file.name}.`);
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}
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zip.file(`linearized-${file.name}`, outputFile, { binary: true });
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successCount++;
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} catch (fileError: any) {
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errorCount++;
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console.error(`Failed to linearize ${file.name}:`, fileError);
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} finally {
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try {
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if (qpdf?.FS) {
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if (qpdf.FS.analyzePath(inputPath).exists) {
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qpdf.FS.unlink(inputPath);
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}
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if (qpdf.FS.analyzePath(outputPath).exists) {
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qpdf.FS.unlink(outputPath);
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}
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}
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} catch (cleanupError) {
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console.warn(
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`Failed to cleanup WASM FS for ${file.name}:`,
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cleanupError
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);
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}
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}
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}
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if (successCount === 0) {
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throw new Error('No PDF files could be linearized.');
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}
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if (loaderText) loaderText.textContent = 'Generating ZIP file...';
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const zipBlob = await zip.generateAsync({ type: 'blob' });
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downloadFile(zipBlob, 'linearized-pdfs.zip');
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let alertMessage = `${successCount} PDF(s) linearized successfully.`;
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if (errorCount > 0) {
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alertMessage += ` ${errorCount} file(s) failed.`;
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}
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showAlert('Processing Complete', alertMessage, 'success', () => { resetState(); });
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} catch (error: any) {
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console.error('Linearization process error:', error);
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showAlert(
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'Linearization Failed',
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`An error occurred: ${error.message || 'Unknown error'}.`
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);
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} finally {
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if (loaderModal) loaderModal.classList.add('hidden');
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}
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}
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document.addEventListener('DOMContentLoaded', function () {
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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const dropZone = document.getElementById('drop-zone');
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const processBtn = document.getElementById('process-btn');
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const addMoreBtn = document.getElementById('add-more-btn');
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const clearFilesBtn = document.getElementById('clear-files-btn');
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const backBtn = document.getElementById('back-to-tools');
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if (backBtn) {
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backBtn.addEventListener('click', function () {
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window.location.href = import.meta.env.BASE_URL;
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});
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}
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if (fileInput && dropZone) {
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fileInput.addEventListener('change', function (e) {
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handleFileSelect((e.target as HTMLInputElement).files);
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});
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dropZone.addEventListener('dragover', function (e) {
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e.preventDefault();
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dropZone.classList.add('bg-gray-700');
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});
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dropZone.addEventListener('dragleave', function (e) {
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e.preventDefault();
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dropZone.classList.remove('bg-gray-700');
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});
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dropZone.addEventListener('drop', function (e) {
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e.preventDefault();
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dropZone.classList.remove('bg-gray-700');
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handleFileSelect(e.dataTransfer?.files);
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});
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fileInput.addEventListener('click', function () {
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fileInput.value = '';
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});
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}
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if (processBtn) {
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processBtn.addEventListener('click', linearizePdf);
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}
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if (addMoreBtn) {
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addMoreBtn.addEventListener('click', function () {
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fileInput.value = '';
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fileInput.click();
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});
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}
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if (clearFilesBtn) {
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clearFilesBtn.addEventListener('click', function () {
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resetState();
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});
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}
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});
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