feat: support multiple PDF in PDF encryption tool
This commit is contained in:
alam00000
@@ -1,236 +1,358 @@
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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 {
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downloadFile,
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formatBytes,
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initializeQpdf,
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readFileAsArrayBuffer,
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} 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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import { DecryptPdfState } from '@/types';
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const pageState: DecryptPdfState = {
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file: null,
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files: [],
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};
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function resetState() {
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pageState.file = null;
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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 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 toolOptions = document.getElementById('tool-options');
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if (toolOptions) toolOptions.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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const fileControls = document.getElementById('file-controls');
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if (fileControls) fileControls.classList.add('hidden');
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const passwordInput = document.getElementById('password-input') as HTMLInputElement;
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if (passwordInput) passwordInput.value = '';
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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if (fileInput) fileInput.value = '';
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const passwordInput = document.getElementById(
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'password-input'
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) as HTMLInputElement;
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if (passwordInput) passwordInput.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 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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if (!fileDisplayArea) return;
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fileDisplayArea.innerHTML = '';
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fileDisplayArea.innerHTML = '';
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if (pageState.file) {
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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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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 =
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'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 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 = pageState.file.name;
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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(pageState.file.size);
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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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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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resetState();
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};
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const removeBtn = document.createElement('button');
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removeBtn.className =
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'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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createIcons({ icons });
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fileDiv.append(infoContainer, removeBtn);
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fileDisplayArea.appendChild(fileDiv);
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});
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if (toolOptions) toolOptions.classList.remove('hidden');
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} else {
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if (toolOptions) toolOptions.classList.add('hidden');
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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 file = files[0];
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if (file.type === 'application/pdf' || file.name.toLowerCase().endsWith('.pdf')) {
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pageState.file = file;
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updateUI();
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}
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if (files && files.length > 0) {
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const pdfFiles = Array.from(files).filter(
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(f) =>
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f.type === 'application/pdf' || f.name.toLowerCase().endsWith('.pdf')
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);
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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 decryptPdf() {
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if (!pageState.file) {
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showAlert('No File', 'Please upload a PDF file first.');
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return;
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}
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if (pageState.files.length === 0) {
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showAlert('No File', 'Please upload at least one PDF file.');
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return;
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}
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const password = (document.getElementById('password-input') as HTMLInputElement)?.value;
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const password = (
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document.getElementById('password-input') as HTMLInputElement
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)?.value;
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if (!password) {
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showAlert('Input Required', 'Please enter the PDF password.');
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return;
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}
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if (!password) {
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showAlert('Input Required', 'Please enter the PDF password.');
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return;
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}
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const inputPath = '/input.pdf';
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const outputPath = '/output.pdf';
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let qpdf: any;
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const loaderModal = document.getElementById('loader-modal');
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const loaderText = document.getElementById('loader-text');
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let qpdf: any;
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const loaderModal = document.getElementById('loader-modal');
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const loaderText = document.getElementById('loader-text');
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try {
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if (loaderModal) loaderModal.classList.remove('hidden');
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if (loaderText) loaderText.textContent = 'Initializing decryption...';
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try {
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if (loaderModal) loaderModal.classList.remove('hidden');
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if (loaderText) loaderText.textContent = 'Initializing decryption...';
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qpdf = await initializeQpdf();
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qpdf = await initializeQpdf();
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if (pageState.files.length === 1) {
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// Single file: decrypt and download directly
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const file = pageState.files[0];
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const inputPath = '/input.pdf';
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const outputPath = '/output.pdf';
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try {
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if (loaderText) loaderText.textContent = 'Reading encrypted PDF...';
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const fileBuffer = await readFileAsArrayBuffer(pageState.file);
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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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if (loaderText) loaderText.textContent = 'Decrypting PDF...';
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const args = [inputPath, '--password=' + password, '--decrypt', outputPath];
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const args = [
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inputPath,
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'--password=' + password,
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'--decrypt',
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outputPath,
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];
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try {
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qpdf.callMain(args);
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qpdf.callMain(args);
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} catch (qpdfError: any) {
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console.error('qpdf execution error:', qpdfError);
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if (
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qpdfError.message?.includes('invalid password') ||
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qpdfError.message?.includes('password')
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) {
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throw new Error('INVALID_PASSWORD');
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}
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throw qpdfError;
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if (
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qpdfError.message?.includes('invalid password') ||
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qpdfError.message?.includes('password')
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) {
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throw new Error('INVALID_PASSWORD');
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}
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throw qpdfError;
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}
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if (loaderText) loaderText.textContent = 'Preparing download...';
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const outputFile = qpdf.FS.readFile(outputPath, { encoding: 'binary' });
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if (outputFile.length === 0) {
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throw new Error('Decryption resulted in an empty file.');
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throw new Error('Decryption resulted in an empty file.');
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}
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const blob = new Blob([outputFile], { type: 'application/pdf' });
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downloadFile(blob, `unlocked-${pageState.file.name}`);
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const blob = new Blob([new Uint8Array(outputFile)], {
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type: 'application/pdf',
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});
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downloadFile(blob, `unlocked-${file.name}`);
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if (loaderModal) loaderModal.classList.add('hidden');
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showAlert(
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'Success',
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'PDF decrypted successfully! Your download has started.',
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'success',
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() => { resetState(); }
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'Success',
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'PDF decrypted successfully! Your download has started.',
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'success',
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() => {
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resetState();
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}
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);
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} catch (error: any) {
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console.error('Error during PDF decryption:', error);
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if (loaderModal) loaderModal.classList.add('hidden');
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if (error.message === 'INVALID_PASSWORD') {
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showAlert(
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'Incorrect Password',
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'The password you entered is incorrect. Please try again.'
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);
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} else if (error.message?.includes('password')) {
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showAlert(
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'Password Error',
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'Unable to decrypt the PDF with the provided password.'
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);
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} else {
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showAlert(
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'Decryption Failed',
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`An error occurred: ${error.message || 'The password you entered is wrong or the file is corrupted.'}`
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);
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}
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} finally {
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} finally {
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try {
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if (qpdf?.FS) {
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try {
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qpdf.FS.unlink(inputPath);
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} catch (e) {
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console.warn('Failed to unlink input file:', e);
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}
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try {
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qpdf.FS.unlink(outputPath);
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} catch (e) {
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console.warn('Failed to unlink output file:', e);
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}
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}
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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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if (qpdf.FS.analyzePath(outputPath).exists)
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qpdf.FS.unlink(outputPath);
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}
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} catch (cleanupError) {
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console.warn('Failed to cleanup WASM FS:', cleanupError);
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console.warn('Failed to cleanup WASM FS:', cleanupError);
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}
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}
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} else {
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// Multiple files: decrypt all and download as ZIP
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const zip = new JSZip();
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let successCount = 0;
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let errorCount = 0;
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for (let i = 0; i < pageState.files.length; i++) {
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const file = pageState.files[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)
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loaderText.textContent = `Decrypting ${file.name} (${i + 1}/${pageState.files.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 = [
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inputPath,
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'--password=' + password,
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'--decrypt',
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outputPath,
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];
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try {
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qpdf.callMain(args);
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} catch (qpdfError: any) {
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if (
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qpdfError.message?.includes('invalid password') ||
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qpdfError.message?.includes('password')
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) {
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throw new Error(`Invalid password for ${file.name}`);
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}
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throw qpdfError;
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}
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const outputFile = qpdf.FS.readFile(outputPath, {
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encoding: 'binary',
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});
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if (!outputFile || outputFile.length === 0) {
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throw new Error(
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`Decryption resulted in an empty file for ${file.name}.`
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);
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}
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zip.file(`unlocked-${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 decrypt ${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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if (qpdf.FS.analyzePath(outputPath).exists)
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qpdf.FS.unlink(outputPath);
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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 ${file.name}:`,
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cleanupError
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);
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}
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}
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}
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if (successCount === 0) {
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throw new Error(
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'No PDF files could be decrypted. The password may be incorrect.'
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);
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}
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if (loaderText) loaderText.textContent = 'Generating ZIP file...';
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const zipBlob = await zip.generateAsync({ type: 'blob' });
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downloadFile(zipBlob, 'decrypted-pdfs.zip');
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let alertMessage = `${successCount} PDF(s) decrypted 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', () => {
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resetState();
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});
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}
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} catch (error: any) {
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console.error('Error during PDF decryption:', error);
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if (error.message === 'INVALID_PASSWORD') {
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showAlert(
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'Incorrect Password',
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'The password you entered is incorrect. Please try again.'
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);
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} else if (error.message?.includes('password')) {
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showAlert(
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'Password Error',
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'Unable to decrypt the PDF with the provided password.'
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);
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} else {
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showAlert(
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'Decryption Failed',
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`An error occurred: ${error.message || 'The password you entered is wrong or the file is corrupted.'}`
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);
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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 backBtn = document.getElementById('back-to-tools');
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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 (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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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('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('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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const files = e.dataTransfer?.files;
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if (files && files.length > 0) {
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const pdfFiles = Array.from(files).filter(function (f) {
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return f.type === 'application/pdf' || f.name.toLowerCase().endsWith('.pdf');
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});
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if (pdfFiles.length > 0) {
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const dataTransfer = new DataTransfer();
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||||
dataTransfer.items.add(pdfFiles[0]);
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handleFileSelect(dataTransfer.files);
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}
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||||
}
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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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||||
});
|
||||
|
||||
fileInput.addEventListener('click', function () {
|
||||
fileInput.value = '';
|
||||
});
|
||||
}
|
||||
fileInput.addEventListener('click', function () {
|
||||
fileInput.value = '';
|
||||
});
|
||||
}
|
||||
|
||||
if (processBtn) {
|
||||
processBtn.addEventListener('click', decryptPdf);
|
||||
}
|
||||
if (processBtn) {
|
||||
processBtn.addEventListener('click', decryptPdf);
|
||||
}
|
||||
|
||||
if (addMoreBtn) {
|
||||
addMoreBtn.addEventListener('click', function () {
|
||||
fileInput.value = '';
|
||||
fileInput.click();
|
||||
});
|
||||
}
|
||||
|
||||
if (clearFilesBtn) {
|
||||
clearFilesBtn.addEventListener('click', function () {
|
||||
resetState();
|
||||
});
|
||||
}
|
||||
});
|
||||
|
||||
@@ -1,3 +1,3 @@
|
||||
export interface DecryptPdfState {
|
||||
file: File | null;
|
||||
files: File[];
|
||||
}
|
||||
|
||||
@@ -141,6 +141,12 @@
|
||||
>
|
||||
<span data-i18n="upload.orDragAndDrop">or drag and drop</span>
|
||||
</p>
|
||||
<p
|
||||
class="text-xs text-gray-500"
|
||||
data-i18n="upload.hints.singleOrMultiplePdfs"
|
||||
>
|
||||
Single or multiple PDF files supported
|
||||
</p>
|
||||
<p class="text-xs text-gray-500" data-i18n="upload.filesNeverLeave">
|
||||
Your files never leave your device.
|
||||
</p>
|
||||
@@ -150,9 +156,28 @@
|
||||
type="file"
|
||||
class="absolute top-0 left-0 w-full h-full opacity-0 cursor-pointer"
|
||||
accept="application/pdf"
|
||||
multiple
|
||||
/>
|
||||
</div>
|
||||
|
||||
<!-- Control buttons for multi-file uploads -->
|
||||
<div id="file-controls" class="hidden mt-4 flex gap-3">
|
||||
<button
|
||||
id="add-more-btn"
|
||||
class="btn bg-indigo-600 hover:bg-indigo-700 text-white font-semibold px-4 py-2 rounded-lg flex items-center gap-2"
|
||||
>
|
||||
<i data-lucide="plus"></i>
|
||||
<span data-i18n="upload.addMore">Add More Files</span>
|
||||
</button>
|
||||
<button
|
||||
id="clear-files-btn"
|
||||
class="btn bg-gray-600 hover:bg-gray-500 text-white font-semibold px-4 py-2 rounded-lg flex items-center gap-2"
|
||||
>
|
||||
<i data-lucide="trash-2"></i>
|
||||
<span data-i18n="upload.clearAll">Clear All</span>
|
||||
</button>
|
||||
</div>
|
||||
|
||||
<div id="file-display-area" class="mt-4 space-y-2"></div>
|
||||
|
||||
<div id="tool-options" class="hidden mt-6 space-y-4">
|
||||
|
||||
Reference in New Issue
Block a user