JS and css cleanup
This commit is contained in:
Anthony Stirling
242
src/main/resources/static/js/downloader.js
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242
src/main/resources/static/js/downloader.js
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function showErrorBanner(message, stackTrace) {
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const errorContainer = document.getElementById("errorContainer");
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errorContainer.style.display = "block"; // Display the banner
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document.querySelector("#errorContainer .alert-heading").textContent = "Error";
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document.querySelector("#errorContainer p").textContent = message;
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document.querySelector("#traceContent").textContent = stackTrace;
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}
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$(document).ready(function() {
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$('form').submit(async function(event) {
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event.preventDefault();
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const url = this.action;
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const files = $('#fileInput-input')[0].files;
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const formData = new FormData(this);
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const override = $('#override').val() || '';
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$('#submitBtn').text('Processing...');
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try {
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if (override === 'multi' || files.length > 1 && override !== 'single') {
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// Show the progress bar
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$('#progressBarContainer').show();
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// Initialize the progress bar
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//let progressBar = $('#progressBar');
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//progressBar.css('width', '0%');
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//progressBar.attr('aria-valuenow', 0);
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//progressBar.attr('aria-valuemax', files.length);
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await submitMultiPdfForm(url, files);
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} else {
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const downloadDetails = await handleSingleDownload(url, formData);
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const downloadOption = localStorage.getItem('downloadOption');
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// Handle the download action according to the selected option
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//handleDownloadAction(downloadOption, downloadDetails.blob, downloadDetails.filename);
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// Update the progress bar
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//updateProgressBar(progressBar, 1);
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}
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$('#submitBtn').text('Submit');
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} catch (error) {
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handleDownloadError(error);
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$('#submitBtn').text('Submit');
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console.error(error);
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}
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});
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});
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function handleDownloadAction(downloadOption, blob, filename) {
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const url = URL.createObjectURL(blob);
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switch (downloadOption) {
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case 'sameWindow':
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// Open the file in the same window
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window.location.href = url;
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break;
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case 'newWindow':
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// Open the file in a new window
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window.open(url, '_blank');
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break;
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default:
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// Download the file
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const link = document.createElement('a');
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link.href = url;
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link.download = filename;
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link.click();
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break;
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}
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}
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async function handleSingleDownload(url, formData) {
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try {
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const response = await fetch(url, { method: 'POST', body: formData });
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const contentType = response.headers.get('content-type');
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if (!response.ok) {
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if (contentType && contentType.includes('application/json')) {
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return handleJsonResponse(response);
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console.error('Throwing error banner, response was not okay');
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}
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throw new Error(`HTTP error! status: ${response.status}`);
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}
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const contentDisposition = response.headers.get('Content-Disposition');
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let filename = getFilenameFromContentDisposition(contentDisposition);
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const blob = await response.blob();
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if (contentType.includes('application/pdf') || contentType.includes('image/')) {
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return handleResponse(blob, filename, true);
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} else {
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return handleResponse(blob, filename);
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}
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} catch (error) {
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console.error('Error in handleSingleDownload:', error);
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throw error; // Re-throw the error if you want it to be handled higher up.
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}
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}
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function getFilenameFromContentDisposition(contentDisposition) {
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let filename;
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if (contentDisposition && contentDisposition.indexOf('attachment') !== -1) {
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filename = decodeURIComponent(contentDisposition.split('filename=')[1].replace(/"/g, '')).trim();
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} else {
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// If the Content-Disposition header is not present or does not contain the filename, use a default filename
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filename = 'download';
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}
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return filename;
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}
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async function handleJsonResponse(response) {
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const json = await response.json();
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const errorMessage = JSON.stringify(json, null, 2);
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if (errorMessage.toLowerCase().includes('the password is incorrect') || errorMessage.toLowerCase().includes('Password is not provided')) {
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alert('[[#{error.pdfPassword}]]');
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} else {
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showErrorBanner(json.error + ':' + json.message, json.trace);
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}
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}
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async function handleResponse(blob, filename, considerViewOptions = false) {
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if (!blob) return;
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const downloadOption = localStorage.getItem('downloadOption');
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if (considerViewOptions) {
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if (downloadOption === 'sameWindow') {
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const url = URL.createObjectURL(blob);
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window.location.href = url;
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return;
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} else if (downloadOption === 'newWindow') {
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const url = URL.createObjectURL(blob);
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window.open(url, '_blank');
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return;
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}
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}
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downloadFile(blob, filename);
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return { filename, blob };
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}
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function handleDownloadError(error) {
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const errorMessage = error.message;
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showErrorBanner(errorMessage);
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}
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let urls = []; // An array to hold all the URLs
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function downloadFile(blob, filename) {
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if (!(blob instanceof Blob)) {
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console.error('Invalid blob passed to downloadFile function');
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return;
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}
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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 = filename;
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a.click();
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urls.push(url); // Store the URL so it doesn't get garbage collected too soon
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return { filename, blob };
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}
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async function submitMultiPdfForm(url, files) {
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const zipThreshold = parseInt(localStorage.getItem('zipThreshold'), 10) || 4;
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const zipFiles = files.length > zipThreshold;
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let jszip = null;
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//let progressBar = $('#progressBar');
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//progressBar.css('width', '0%');
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//progressBar.attr('aria-valuenow', 0);
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//progressBar.attr('aria-valuemax', Array.from(files).length);
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if (zipFiles) {
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jszip = new JSZip();
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}
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// Get existing form data
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let formData = new FormData($('form')[0]);
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formData.delete('fileInput');
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const CONCURRENCY_LIMIT = 8;
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const chunks = [];
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for (let i = 0; i < Array.from(files).length; i += CONCURRENCY_LIMIT) {
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chunks.push(Array.from(files).slice(i, i + CONCURRENCY_LIMIT));
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}
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for (const chunk of chunks) {
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const promises = chunk.map(async file => {
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let fileFormData = new FormData();
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fileFormData.append('fileInput', file);
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// Add other form data
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for (let pair of formData.entries()) {
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fileFormData.append(pair[0], pair[1]);
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}
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try {
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const downloadDetails = await handleSingleDownload(url, fileFormData);
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console.log(downloadDetails);
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if (zipFiles) {
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jszip.file(downloadDetails.filename, downloadDetails.blob);
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} else {
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downloadFile(downloadDetails.blob, downloadDetails.filename);
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}
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//updateProgressBar(progressBar, Array.from(files).length);
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} catch (error) {
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handleDownloadError(error);
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console.error(error);
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}
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});
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await Promise.all(promises);
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}
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if (zipFiles) {
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try {
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const content = await jszip.generateAsync({ type: "blob" });
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downloadFile(content, "files.zip");
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} catch (error) {
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console.error('Error generating ZIP file: ' + error);
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}
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}
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}
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function updateProgressBar(progressBar, files) {
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let progress = ((progressBar.attr('aria-valuenow') / files.length) * 100) + (100 / files.length);
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progressBar.css('width', progress + '%');
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progressBar.attr('aria-valuenow', parseInt(progressBar.attr('aria-valuenow')) + 1);
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}
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window.addEventListener('unload', () => {
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for (const url of urls) {
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URL.revokeObjectURL(url);
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}
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});
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