Add visual workflow builder, fix critical bugs, and add Arabic i18n support
This commit is contained in:
alam00000
@@ -1,206 +1,222 @@
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import { showLoader, hideLoader, showAlert } from '../ui.js';
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import { downloadFile, formatBytes, readFileAsArrayBuffer, getPDFDocument } from '../utils/helpers.js';
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import {
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downloadFile,
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formatBytes,
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readFileAsArrayBuffer,
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getPDFDocument,
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} from '../utils/helpers.js';
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import { createIcons, icons } from 'lucide';
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import { PDFDocument } from 'pdf-lib';
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import { applyGreyscale } from '../utils/image-effects.js';
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import * as pdfjsLib from 'pdfjs-dist';
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pdfjsLib.GlobalWorkerOptions.workerSrc = new URL('pdfjs-dist/build/pdf.worker.min.mjs', import.meta.url).toString();
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pdfjsLib.GlobalWorkerOptions.workerSrc = new URL(
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'pdfjs-dist/build/pdf.worker.min.mjs',
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import.meta.url
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).toString();
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let files: File[] = [];
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const updateUI = () => {
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const fileDisplayArea = document.getElementById('file-display-area');
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const optionsPanel = document.getElementById('options-panel');
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const dropZone = document.getElementById('drop-zone');
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const fileDisplayArea = document.getElementById('file-display-area');
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const optionsPanel = document.getElementById('options-panel');
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const dropZone = document.getElementById('drop-zone');
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if (!fileDisplayArea || !optionsPanel || !dropZone) return;
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if (!fileDisplayArea || !optionsPanel || !dropZone) return;
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fileDisplayArea.innerHTML = '';
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fileDisplayArea.innerHTML = '';
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if (files.length > 0) {
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optionsPanel.classList.remove('hidden');
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if (files.length > 0) {
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optionsPanel.classList.remove('hidden');
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// Render files synchronously first
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files.forEach((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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// Render files synchronously first
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files.forEach((file) => {
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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 = 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 = `${formatBytes(file.size)} • Loading pages...`; // Initial state
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const metaSpan = document.createElement('div');
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metaSpan.className = 'text-xs text-gray-400';
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metaSpan.textContent = `${formatBytes(file.size)} • Loading pages...`; // Initial state
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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 = () => {
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files = [];
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updateUI();
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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 = () => {
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files = [];
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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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fileDiv.append(infoContainer, removeBtn);
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fileDisplayArea.appendChild(fileDiv);
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// Fetch page count asynchronously
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readFileAsArrayBuffer(file).then(buffer => {
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return getPDFDocument(buffer).promise;
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}).then(pdf => {
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metaSpan.textContent = `${formatBytes(file.size)} • ${pdf.numPages} page${pdf.numPages !== 1 ? 's' : ''}`;
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}).catch(e => {
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console.warn('Error loading PDF page count:', e);
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metaSpan.textContent = formatBytes(file.size);
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});
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// Fetch page count asynchronously
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readFileAsArrayBuffer(file)
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.then((buffer) => {
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return getPDFDocument(buffer).promise;
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})
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.then((pdf) => {
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metaSpan.textContent = `${formatBytes(file.size)} • ${pdf.numPages} page${pdf.numPages !== 1 ? 's' : ''}`;
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})
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.catch((e) => {
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console.warn('Error loading PDF page count:', e);
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metaSpan.textContent = formatBytes(file.size);
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});
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});
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// Initialize icons immediately after synchronous render
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createIcons({ icons });
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} else {
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optionsPanel.classList.add('hidden');
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}
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// Initialize icons immediately after synchronous render
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createIcons({ icons });
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} else {
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optionsPanel.classList.add('hidden');
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}
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};
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const resetState = () => {
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files = [];
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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if (fileInput) fileInput.value = '';
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updateUI();
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files = [];
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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if (fileInput) fileInput.value = '';
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updateUI();
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};
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async function convert() {
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if (files.length === 0) {
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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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showLoader('Converting to greyscale...');
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try {
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const pdfBytes = await readFileAsArrayBuffer(files[0]) as ArrayBuffer;
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const pdfDoc = await PDFDocument.load(pdfBytes);
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const pages = pdfDoc.getPages();
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if (files.length === 0) {
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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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showLoader('Converting to greyscale...');
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try {
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const pdfBytes = (await readFileAsArrayBuffer(files[0])) as ArrayBuffer;
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const pdfDoc = await PDFDocument.load(pdfBytes);
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const pages = pdfDoc.getPages();
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const pdfjsDoc = await getPDFDocument({ data: pdfBytes }).promise;
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const newPdfDoc = await PDFDocument.create();
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const pdfjsDoc = await getPDFDocument({ data: pdfBytes }).promise;
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const newPdfDoc = await PDFDocument.create();
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for (let i = 1; i <= pdfjsDoc.numPages; i++) {
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const page = await pdfjsDoc.getPage(i);
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const viewport = page.getViewport({ scale: 2.0 });
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const canvas = document.createElement('canvas');
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const context = canvas.getContext('2d');
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canvas.height = viewport.height;
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canvas.width = viewport.width;
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for (let i = 1; i <= pdfjsDoc.numPages; i++) {
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const page = await pdfjsDoc.getPage(i);
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const viewport = page.getViewport({ scale: 2.0 });
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const canvas = document.createElement('canvas');
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const context = canvas.getContext('2d');
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canvas.height = viewport.height;
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canvas.width = viewport.width;
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await page.render({ canvasContext: context!, viewport: viewport, canvas }).promise;
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await page.render({ canvasContext: context!, viewport: viewport, canvas })
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.promise;
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const imageData = context!.getImageData(0, 0, canvas.width, canvas.height);
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const data = imageData.data;
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const imageData = context!.getImageData(
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0,
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0,
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canvas.width,
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canvas.height
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);
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applyGreyscale(imageData);
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context!.putImageData(imageData, 0, 0);
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// Convert to greyscale
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for (let j = 0; j < data.length; j += 4) {
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const grey = Math.round(0.299 * data[j] + 0.587 * data[j + 1] + 0.114 * data[j + 2]);
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data[j] = grey;
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data[j + 1] = grey;
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data[j + 2] = grey;
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}
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const jpegBlob = await new Promise<Blob | null>((resolve) =>
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canvas.toBlob(resolve, 'image/jpeg', 0.9)
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);
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context!.putImageData(imageData, 0, 0);
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const jpegBlob = await new Promise<Blob | null>((resolve) =>
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canvas.toBlob(resolve, 'image/jpeg', 0.9)
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);
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if (jpegBlob) {
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const jpegBytes = await jpegBlob.arrayBuffer();
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const jpegImage = await newPdfDoc.embedJpg(jpegBytes);
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const newPage = newPdfDoc.addPage([viewport.width, viewport.height]);
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newPage.drawImage(jpegImage, {
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x: 0,
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y: 0,
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width: viewport.width,
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height: viewport.height,
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});
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}
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}
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const resultBytes = await newPdfDoc.save();
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downloadFile(
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new Blob([new Uint8Array(resultBytes)], { type: 'application/pdf' }),
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'greyscale.pdf'
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);
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showAlert('Success', 'PDF converted to greyscale successfully!', 'success', () => {
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resetState();
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if (jpegBlob) {
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const jpegBytes = await jpegBlob.arrayBuffer();
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const jpegImage = await newPdfDoc.embedJpg(jpegBytes);
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const newPage = newPdfDoc.addPage([viewport.width, viewport.height]);
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newPage.drawImage(jpegImage, {
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x: 0,
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y: 0,
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width: viewport.width,
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height: viewport.height,
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});
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} catch (e) {
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console.error(e);
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showAlert(
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'Error',
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'Failed to convert PDF to greyscale. The file might be corrupted.'
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);
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} finally {
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hideLoader();
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}
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}
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const resultBytes = await newPdfDoc.save();
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downloadFile(
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new Blob([new Uint8Array(resultBytes)], { type: 'application/pdf' }),
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'greyscale.pdf'
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);
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showAlert(
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'Success',
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'PDF converted to greyscale successfully!',
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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 (e) {
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console.error(e);
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showAlert(
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'Error',
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'Failed to convert PDF to greyscale. The file might be corrupted.'
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);
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} finally {
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hideLoader();
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}
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}
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document.addEventListener('DOMContentLoaded', () => {
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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 backBtn = document.getElementById('back-to-tools');
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if (backBtn) {
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backBtn.addEventListener('click', () => {
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window.location.href = import.meta.env.BASE_URL;
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});
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if (backBtn) {
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backBtn.addEventListener('click', () => {
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window.location.href = import.meta.env.BASE_URL;
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});
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}
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const handleFileSelect = (newFiles: FileList | null) => {
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if (!newFiles || newFiles.length === 0) return;
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const validFiles = Array.from(newFiles).filter(
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(file) => file.type === 'application/pdf'
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);
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if (validFiles.length === 0) {
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showAlert('Invalid File', 'Please upload a PDF file.');
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return;
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}
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const handleFileSelect = (newFiles: FileList | null) => {
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if (!newFiles || newFiles.length === 0) return;
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const validFiles = Array.from(newFiles).filter(
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(file) => file.type === 'application/pdf'
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);
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files = [validFiles[0]];
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updateUI();
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};
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if (validFiles.length === 0) {
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showAlert('Invalid File', 'Please upload a PDF file.');
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return;
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}
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if (fileInput && dropZone) {
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fileInput.addEventListener('change', (e) => {
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handleFileSelect((e.target as HTMLInputElement).files);
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});
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files = [validFiles[0]];
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updateUI();
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};
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dropZone.addEventListener('dragover', (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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if (fileInput && dropZone) {
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fileInput.addEventListener('change', (e) => {
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handleFileSelect((e.target as HTMLInputElement).files);
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});
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dropZone.addEventListener('dragleave', (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('dragover', (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('drop', (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 ?? null);
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});
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dropZone.addEventListener('dragleave', (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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fileInput.addEventListener('click', () => {
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fileInput.value = '';
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});
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}
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dropZone.addEventListener('drop', (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 ?? null);
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});
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fileInput.addEventListener('click', () => {
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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', convert);
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}
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if (processBtn) {
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processBtn.addEventListener('click', convert);
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}
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});
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