293 lines
9.3 KiB
JavaScript
293 lines
9.3 KiB
JavaScript
var windowWidth = window.innerWidth;
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var menu = null;
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var menuOffcanvas = null;
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var is_mobile = function() {
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return !(window.getComputedStyle(document.getElementById('is_mobile')).display === "none");
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};
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var responsiveDisplay = function() {
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if(is_mobile()) {
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menu.classList.remove('show');
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menuOffcanvas.hide();
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} else {
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menuOffcanvas.show();
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}
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menu.classList.remove('d-md-block');
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menu.classList.remove('d-none');
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};
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var pdfjsLib = window['pdfjs-dist/build/pdf'];
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pdfjsLib.GlobalWorkerOptions.workerSrc = '/vendor/pdf.worker.js?legacy';
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var nbPDF = 0;
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var pages = [];
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var pdfRenderTasks = [];
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let filename = null
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let pdffile = null
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let deletedMetadata = [];
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var loadPDF = async function(pdfBlob, filename, pdfIndex) {
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let url = await URL.createObjectURL(pdfBlob);
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pdffile = pdfBlob
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let loadingTask = pdfjsLib.getDocument(url);
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document.querySelector('#text_document_name span').innerText = filename;
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await loadingTask.promise.then(function(pdf) {
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pdf.getMetadata().then(function(metadata) {
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console.log(metadata);
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for(fieldKey in defaultFields) {
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addMetadata(fieldKey, null, defaultFields[fieldKey]['type'], false);
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}
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for(metaKey in metadata.info) {
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if(metaKey == "Custom" || metaKey == "PDFFormatVersion" || metaKey.match(/^Is/) || metaKey == "Trapped") {
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continue;
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}
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addMetadata(metaKey, metadata.info[metaKey], "text", false);
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}
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for(metaKey in metadata.info.Custom) {
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if(metaKey == "sha256") {
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continue;
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}
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addMetadata(metaKey, metadata.info.Custom[metaKey], "text", false);
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}
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for(let pageNumber = 1; pageNumber <= pdf.numPages; pageNumber++ ) {
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pdf.getPage(pageNumber).then(function(page) {
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let pageIndex = (page.pageNumber - 1);
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pages[pageIndex] = page;
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pageRender(pageIndex);
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});
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}
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if(document.querySelector('.input-metadata input')) {
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document.querySelector('.input-metadata input').focus();
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} else {
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document.getElementById('input_metadata_key').focus();
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}
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});
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}, function (reason) {
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console.error(reason);
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});
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return loadingTask;
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}
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var pageRender = async function(pageIndex) {
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let page = pages[pageIndex];
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let viewport = page.getViewport({scale: 1});
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let sizeWidth = document.getElementById('container-pages').offsetWidth;
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let scaleWidth = sizeWidth / viewport.width;
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let viewportWidth = page.getViewport({scale: scaleWidth });
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viewport = viewportWidth;
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let canvasPDF = document.createElement('canvas');
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canvasPDF.classList.add('shadow-sm');
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document.getElementById('container-pages').appendChild(canvasPDF);
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let context = canvasPDF.getContext('2d');
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canvasPDF.height = viewport.height;
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canvasPDF.width = viewport.width;
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if(pdfRenderTasks[pageIndex]) {
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pdfRenderTasks[pageIndex].cancel();
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}
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pdfRenderTasks[pageIndex] = await page.render({
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canvasContext: context,
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viewport: viewport,
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});
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}
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var addMetadata = function(key, value, type, focus) {
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let input = document.querySelector('.input-metadata input[name="'+key+'"]');
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if(input && input.value === null) {
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input.value = value;
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}
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if(input && focus) {
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input.focus();
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}
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if(input) {
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return;
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}
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let div = document.createElement('div');
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div.classList.add('form-floating', 'mt-3', 'input-metadata');
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input = document.createElement('input');
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input.value = value;
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input.type = type;
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input.name = key;
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input.classList.add('form-control');
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let label = document.createElement('label');
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label.innerText = key;
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let deleteButton = document.createElement('div')
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deleteButton.innerHTML = "×"
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deleteButton.classList.add('delete-metadata')
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div.appendChild(input);
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div.appendChild(label);
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div.appendChild(deleteButton);
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document.getElementById('form-metadata-container').appendChild(div);
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if(focus) {
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input.focus();
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}
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}
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const deleteMetadata = function(el) {
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if (confirm("Souhaitez-vous supprimer ce champ ?") === false) return;
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const input = el.closest('.input-metadata')
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const label = input.querySelector('label').innerText
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deletedMetadata.push(label)
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input.remove()
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}
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const DL = function (d,f) {
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let a = document.createElement("a"),
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u = URL.createObjectURL(d);
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a.download = f,
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a.href = u,
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a.click(),
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setTimeout(() => URL.revokeObjectURL(u))
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}
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const save = async function () {
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const PDFDocument = window['PDFLib'].PDFDocument
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const PDFHexString = window['PDFLib'].PDFHexString
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const PDFName = window['PDFLib'].PDFName
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const arrayBuffer = await pdffile.arrayBuffer();
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const pdf = await PDFDocument.load(arrayBuffer);
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deletedMetadata.forEach(function (el) {
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pdf.getInfoDict().delete(PDFName.of(el))
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});
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([...document.getElementsByClassName('input-metadata')] || []).forEach(function (el) {
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const label = el.querySelector('label').innerText
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const input = el.querySelector('input').value
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pdf.getInfoDict().set(PDFName.of(label), PDFHexString.fromText(input));
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});
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const newPDF = new Blob([await pdf.save()], {type: "application/pdf"});
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DL(newPDF, filename)
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}
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var createEventsListener = function() {
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document.getElementById('form_metadata_add').addEventListener('submit', function(e) {
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let formData = new FormData(this);
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addMetadata(formData.get('metadata_key'), "", "text", true);
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this.classList.add('invisible');
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setTimeout(function() { document.getElementById('form_metadata_add').classList.remove('invisible'); }, 400);
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this.reset();
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e.preventDefault();
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});
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document.getElementById('input_metadata_value').addEventListener('focus', function(e) {
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if(document.getElementById('input_metadata_key').value) {
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document.querySelector('#form_metadata_add button').click();
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}
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});
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document.addEventListener('click', function (event) {
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if (event.target.closest(".delete-metadata")) {
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deleteMetadata(event.target)
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}
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})
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document.getElementById('save').addEventListener('click', function (e) {
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save()
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})
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}
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async function getPDFBlobFromCache(cacheUrl) {
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const cache = await caches.open('pdf');
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let responsePdf = await cache.match(cacheUrl);
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if(!responsePdf) {
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return null;
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}
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let pdfBlob = await responsePdf.blob();
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return pdfBlob;
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}
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async function uploadFromUrl(url) {
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history.replaceState({}, '', '/metadata');
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var response = await fetch(url);
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if(response.status != 200) {
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return;
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}
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var pdfBlob = await response.blob();
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if(pdfBlob.type != 'application/pdf' && pdfBlob.type != 'application/octet-stream') {
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return;
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}
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let dataTransfer = new DataTransfer();
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let filename = url.replace(/^.*\//, '');
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dataTransfer.items.add(new File([pdfBlob], filename, {
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type: 'application/pdf'
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}));
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document.getElementById('input_pdf_upload').files = dataTransfer.files;
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document.getElementById('input_pdf_upload').dispatchEvent(new Event("change"));
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}
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var pageUpload = async function() {
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document.querySelector('body').classList.remove('bg-light');
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document.getElementById('input_pdf_upload').value = '';
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document.getElementById('page-upload').classList.remove('d-none');
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document.getElementById('page-metadata').classList.add('d-none');
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document.getElementById('input_pdf_upload').focus();
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const cache = await caches.open('pdf');
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document.getElementById('input_pdf_upload').addEventListener('change', async function(event) {
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let filename = document.getElementById('input_pdf_upload').files[0].name;
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let response = new Response(document.getElementById('input_pdf_upload').files[0], { "status" : 200, "statusText" : "OK" });
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let urlPdf = '/pdf/'+filename;
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await cache.put(urlPdf, response);
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history.pushState({}, '', '/metadata#'+filename);
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pageMetadata(urlPdf)
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});
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}
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var pageMetadata = async function(url) {
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filename = url.replace('/pdf/', '');
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document.title = filename + ' - ' + document.title;
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document.querySelector('body').classList.add('bg-light');
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document.getElementById('page-upload').classList.add('d-none');
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document.getElementById('page-metadata').classList.remove('d-none');
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menu = document.getElementById('sidebarTools');
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menuOffcanvas = new bootstrap.Offcanvas(menu);
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responsiveDisplay();
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let pdfBlob = await getPDFBlobFromCache(url);
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if(!pdfBlob) {
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document.location = '/metadata';
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return;
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}
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createEventsListener();
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loadPDF(pdfBlob, filename, nbPDF);
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};
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(function () {
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if(window.location.hash && window.location.hash.match(/^\#http/)) {
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let hashUrl = window.location.hash.replace(/^\#/, '');
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pageUpload();
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uploadFromUrl(hashUrl);
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} else if(window.location.hash) {
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pageMetadata('/pdf/'+window.location.hash.replace(/^\#/, ''));
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} else {
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pageUpload();
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}
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window.addEventListener('hashchange', function() {
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window.location.reload();
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})
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})();
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