feat: add JSON to PDF and PDF to JSON conversion tools
- Introduced new pages and logic for converting JSON files to PDF and vice versa. - Implemented web workers for handling conversion processes in the background. - Updated Vite configuration to include new HTML pages for the conversion tools. - Enhanced user interface with file upload sections and status messages for conversion progress. - Added TypeScript definitions for worker communication and response handling.
This commit is contained in:
abdullahalam123
159
src/js/logic/json-to-pdf.ts
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159
src/js/logic/json-to-pdf.ts
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@@ -0,0 +1,159 @@
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import JSZip from 'jszip'
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import { downloadFile, formatBytes, readFileAsArrayBuffer } from '../utils/helpers';
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const worker = new Worker(new URL('/workers/json-to-pdf.worker.js', import.meta.url));
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let selectedFiles: File[] = []
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const jsonFilesInput = document.getElementById('jsonFiles') as HTMLInputElement
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const convertBtn = document.getElementById('convertBtn') as HTMLButtonElement
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const statusMessage = document.getElementById('status-message') as HTMLDivElement
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const fileListDiv = document.getElementById('fileList') as HTMLDivElement
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const backToToolsBtn = document.getElementById('back-to-tools') as HTMLButtonElement
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function showStatus(
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message: string,
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type: 'success' | 'error' | 'info' = 'info'
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) {
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statusMessage.textContent = message
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statusMessage.className = `mt-4 p-3 rounded-lg text-sm ${
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type === 'success'
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? 'bg-green-900 text-green-200'
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: type === 'error'
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? 'bg-red-900 text-red-200'
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: 'bg-blue-900 text-blue-200'
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}`
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statusMessage.classList.remove('hidden')
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}
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function hideStatus() {
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statusMessage.classList.add('hidden')
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}
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function updateFileList() {
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fileListDiv.innerHTML = ''
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if (selectedFiles.length === 0) {
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fileListDiv.classList.add('hidden')
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return
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}
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fileListDiv.classList.remove('hidden')
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selectedFiles.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 mb-2'
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const nameSpan = document.createElement('span')
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nameSpan.className = 'truncate font-medium text-gray-200'
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nameSpan.textContent = file.name
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const sizeSpan = document.createElement('span')
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sizeSpan.className = 'flex-shrink-0 ml-4 text-gray-400'
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sizeSpan.textContent = formatBytes(file.size)
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fileDiv.append(nameSpan, sizeSpan)
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fileListDiv.appendChild(fileDiv)
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})
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}
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jsonFilesInput.addEventListener('change', (e) => {
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const target = e.target as HTMLInputElement
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if (target.files && target.files.length > 0) {
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selectedFiles = Array.from(target.files)
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convertBtn.disabled = selectedFiles.length === 0
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updateFileList()
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if (selectedFiles.length === 0) {
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showStatus('Please select at least 1 JSON file', 'info')
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} else {
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showStatus(`${selectedFiles.length} file(s) selected. Ready to convert!`, 'info')
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}
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}
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})
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async function convertJSONsToPDF() {
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if (selectedFiles.length === 0) {
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showStatus('Please select at least 1 JSON file', 'error')
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return
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}
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try {
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convertBtn.disabled = true
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showStatus('Reading files (Main Thread)...', 'info')
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const fileBuffers = await Promise.all(
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selectedFiles.map(file => readFileAsArrayBuffer(file))
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)
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showStatus('Converting JSONs to PDFs...', 'info')
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worker.postMessage({
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command: 'convert',
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fileBuffers: fileBuffers,
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fileNames: selectedFiles.map(f => f.name)
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}, fileBuffers);
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} catch (error) {
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console.error('Error reading files:', error)
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showStatus(`❌ Error reading files: ${error instanceof Error ? error.message : 'Unknown error'}`, 'error')
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convertBtn.disabled = false
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}
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}
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worker.onmessage = async (e: MessageEvent) => {
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convertBtn.disabled = false;
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if (e.data.status === 'success') {
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const pdfFiles = e.data.pdfFiles as Array<{ name: string, data: ArrayBuffer }>;
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try {
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showStatus('Creating ZIP file...', 'info')
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const zip = new JSZip()
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pdfFiles.forEach(({ name, data }) => {
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const pdfName = name.replace(/\.json$/i, '.pdf')
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const uint8Array = new Uint8Array(data)
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zip.file(pdfName, uint8Array)
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})
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const zipBlob = await zip.generateAsync({ type: 'blob' })
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const url = URL.createObjectURL(zipBlob)
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const a = document.createElement('a')
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a.href = url
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a.download = 'jsons-to-pdf.zip'
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downloadFile(zipBlob, 'jsons-to-pdf.zip')
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showStatus('✅ JSONs converted to PDF successfully! ZIP download started.', 'success')
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selectedFiles = []
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jsonFilesInput.value = ''
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fileListDiv.innerHTML = ''
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fileListDiv.classList.add('hidden')
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convertBtn.disabled = true
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setTimeout(() => {
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hideStatus()
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}, 3000)
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} catch (error) {
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console.error('Error creating ZIP:', error)
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showStatus(`❌ Error creating ZIP: ${error instanceof Error ? error.message : 'Unknown error'}`, 'error')
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}
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} else if (e.data.status === 'error') {
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const errorMessage = e.data.message || 'Unknown error occurred in worker.';
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console.error('Worker Error:', errorMessage);
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showStatus(`❌ Worker Error: ${errorMessage}`, 'error');
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}
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};
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if (backToToolsBtn) {
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backToToolsBtn.addEventListener('click', () => {
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window.location.href = '../../index.html#tools-header'
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})
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}
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convertBtn.addEventListener('click', convertJSONsToPDF)
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// Initialize
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showStatus('Select JSON files to get started', 'info')
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155
src/js/logic/pdf-to-json.ts
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155
src/js/logic/pdf-to-json.ts
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@@ -0,0 +1,155 @@
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import JSZip from 'jszip'
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import { downloadFile, formatBytes, readFileAsArrayBuffer } from '../utils/helpers';
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const worker = new Worker(new URL('/workers/pdf-to-json.worker.js', import.meta.url));
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let selectedFiles: File[] = []
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const pdfFilesInput = document.getElementById('pdfFiles') as HTMLInputElement
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const convertBtn = document.getElementById('convertBtn') as HTMLButtonElement
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const statusMessage = document.getElementById('status-message') as HTMLDivElement
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const fileListDiv = document.getElementById('fileList') as HTMLDivElement
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const backToToolsBtn = document.getElementById('back-to-tools') as HTMLButtonElement
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function showStatus(
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message: string,
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type: 'success' | 'error' | 'info' = 'info'
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) {
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statusMessage.textContent = message
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statusMessage.className = `mt-4 p-3 rounded-lg text-sm ${
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type === 'success'
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? 'bg-green-900 text-green-200'
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: type === 'error'
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? 'bg-red-900 text-red-200'
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: 'bg-blue-900 text-blue-200'
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}`
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statusMessage.classList.remove('hidden')
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}
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function hideStatus() {
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statusMessage.classList.add('hidden')
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}
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function updateFileList() {
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fileListDiv.innerHTML = ''
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if (selectedFiles.length === 0) {
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fileListDiv.classList.add('hidden')
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return
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}
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fileListDiv.classList.remove('hidden')
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selectedFiles.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 mb-2'
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const nameSpan = document.createElement('span')
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nameSpan.className = 'truncate font-medium text-gray-200'
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nameSpan.textContent = file.name
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const sizeSpan = document.createElement('span')
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sizeSpan.className = 'flex-shrink-0 ml-4 text-gray-400'
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sizeSpan.textContent = formatBytes(file.size)
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fileDiv.append(nameSpan, sizeSpan)
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fileListDiv.appendChild(fileDiv)
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})
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}
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pdfFilesInput.addEventListener('change', (e) => {
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const target = e.target as HTMLInputElement
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if (target.files && target.files.length > 0) {
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selectedFiles = Array.from(target.files)
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convertBtn.disabled = selectedFiles.length === 0
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updateFileList()
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if (selectedFiles.length === 0) {
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showStatus('Please select at least 1 PDF file', 'info')
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} else {
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showStatus(`${selectedFiles.length} file(s) selected. Ready to convert!`, 'info')
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}
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}
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})
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async function convertPDFsToJSON() {
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if (selectedFiles.length === 0) {
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showStatus('Please select at least 1 PDF file', 'error')
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return
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}
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try {
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convertBtn.disabled = true
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showStatus('Reading files (Main Thread)...', 'info')
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const fileBuffers = await Promise.all(
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selectedFiles.map(file => readFileAsArrayBuffer(file))
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)
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showStatus('Converting PDFs to JSON..', 'info')
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worker.postMessage({
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command: 'convert',
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fileBuffers: fileBuffers,
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fileNames: selectedFiles.map(f => f.name)
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}, fileBuffers);
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} catch (error) {
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console.error('Error reading files:', error)
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showStatus(`❌ Error reading files: ${error instanceof Error ? error.message : 'Unknown error'}`, 'error')
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convertBtn.disabled = false
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}
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}
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worker.onmessage = async (e: MessageEvent) => {
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convertBtn.disabled = false;
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if (e.data.status === 'success') {
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const jsonFiles = e.data.jsonFiles as Array<{ name: string, data: ArrayBuffer }>;
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try {
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showStatus('Creating ZIP file...', 'info')
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const zip = new JSZip()
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jsonFiles.forEach(({ name, data }) => {
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const jsonName = name.replace(/\.pdf$/i, '.json')
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const uint8Array = new Uint8Array(data)
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zip.file(jsonName, uint8Array)
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})
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const zipBlob = await zip.generateAsync({ type: 'blob' })
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downloadFile(zipBlob, 'pdfs-to-json.zip')
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showStatus('✅ PDFs converted to JSON successfully! ZIP download started.', 'success')
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selectedFiles = []
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pdfFilesInput.value = ''
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fileListDiv.innerHTML = ''
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fileListDiv.classList.add('hidden')
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convertBtn.disabled = true
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setTimeout(() => {
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hideStatus()
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}, 3000)
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} catch (error) {
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console.error('Error creating ZIP:', error)
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showStatus(`❌ Error creating ZIP: ${error instanceof Error ? error.message : 'Unknown error'}`, 'error')
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}
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} else if (e.data.status === 'error') {
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const errorMessage = e.data.message || 'Unknown error occurred in worker.';
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console.error('Worker Error:', errorMessage);
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showStatus(`❌ Worker Error: ${errorMessage}`, 'error');
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}
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};
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if (backToToolsBtn) {
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backToToolsBtn.addEventListener('click', () => {
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window.location.href = '../../index.html#tools-header'
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})
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}
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convertBtn.addEventListener('click', convertPDFsToJSON)
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// Initialize
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showStatus('Select PDF files to get started', 'info')
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@@ -1,3 +1,5 @@
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import { downloadFile, formatBytes } from "../utils/helpers";
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const worker = new Worker('/workers/table-of-contents.worker.js');
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let pdfFile: File | null = null;
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@@ -46,7 +48,6 @@ interface TOCErrorResponse {
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type TOCWorkerResponse = TOCSuccessResponse | TOCErrorResponse;
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// Show status message
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function showStatus(
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message: string,
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type: 'success' | 'error' | 'info' = 'info'
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@@ -62,21 +63,10 @@ function showStatus(
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statusMessage.classList.remove('hidden');
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}
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// Hide status message
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function hideStatus() {
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statusMessage.classList.add('hidden');
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}
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// Format bytes helper
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function formatBytes(bytes: number): string {
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if (bytes === 0) return '0 Bytes';
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const k = 1024;
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const sizes = ['Bytes', 'KB', 'MB', 'GB'];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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return Math.round((bytes / Math.pow(k, i)) * 100) / 100 + ' ' + sizes[i];
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}
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// Render file display
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function renderFileDisplay(file: File) {
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fileDisplayArea.innerHTML = '';
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fileDisplayArea.classList.remove('hidden');
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@@ -97,7 +87,6 @@ function renderFileDisplay(file: File) {
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fileDisplayArea.appendChild(fileDiv);
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}
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// Handle file selection
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function handleFileSelect(file: File) {
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if (file.type !== 'application/pdf') {
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showStatus('Please select a PDF file.', 'error');
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@@ -107,10 +96,8 @@ function handleFileSelect(file: File) {
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pdfFile = file;
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generateBtn.disabled = false;
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renderFileDisplay(file);
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// showStatus(`File selected: ${file.name}`, 'success');
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}
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// Drag and drop handlers
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dropZone.addEventListener('dragover', (e) => {
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e.preventDefault();
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dropZone.classList.add('border-blue-500');
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@@ -136,7 +123,6 @@ fileInput.addEventListener('change', (e) => {
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}
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});
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// Generate table of contents
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async function generateTableOfContents() {
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if (!pdfFile) {
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showStatus('Please select a PDF file first.', 'error');
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@@ -176,7 +162,6 @@ async function generateTableOfContents() {
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}
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}
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// Handle messages from worker
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worker.onmessage = (e: MessageEvent<TOCWorkerResponse>) => {
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generateBtn.disabled = false;
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@@ -185,15 +170,7 @@ worker.onmessage = (e: MessageEvent<TOCWorkerResponse>) => {
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const pdfBytes = new Uint8Array(pdfBytesBuffer);
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const blob = new Blob([pdfBytes], { type: 'application/pdf' });
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const url = URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url;
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a.download =
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pdfFile?.name.replace('.pdf', '_with_toc.pdf') || 'output_with_toc.pdf';
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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URL.revokeObjectURL(url);
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downloadFile(blob, pdfFile?.name.replace('.pdf', '_with_toc.pdf') || 'output_with_toc.pdf');
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showStatus(
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'Table of contents generated successfully! Download started.',
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@@ -219,7 +196,6 @@ worker.onerror = (error) => {
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generateBtn.disabled = false;
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};
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// Back to tools button
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if (backToToolsBtn) {
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backToToolsBtn.addEventListener('click', () => {
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window.location.href = '../../index.html#tools-header';
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Reference in New Issue
Block a user