working UGC content upload with multi-upload support
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// Shared J621-style uploader for UGC pages.
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// Wires every `.upload-zone[data-upload]` on the page: dropzone click/drag,
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// per-file XHR to /api/uploads/, preview cards, removal, batch progress.
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// Single slots (thumbnail/version) hold one file; media is multi.
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(function () {
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function getCookie(name) {
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let cookieValue = null;
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if (document.cookie && document.cookie !== '') {
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const cookies = document.cookie.split(';');
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for (let i = 0; i < cookies.length; i++) {
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const cookie = cookies[i].trim();
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if (cookie.substring(0, name.length + 1) === (name + '=')) {
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cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
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break;
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}
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}
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}
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return cookieValue;
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}
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function init(options) {
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const opts = options || {};
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const pending = opts.pending || [];
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const csrf = getCookie('csrftoken');
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const csrfHeader = csrf ? { 'X-CSRFToken': csrf } : {};
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const zones = {};
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document.querySelectorAll('.upload-zone[data-upload]').forEach((zone) => {
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const kind = zone.dataset.upload;
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zones[kind] = {
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zone,
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kind,
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single: kind === 'thumbnail' || kind === 'version',
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drop: zone.querySelector('.drop-zone'),
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input: zone.querySelector('input[type=file]'),
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preview: zone.querySelector('.upload-preview, #media-preview'),
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batch: zone.querySelector('.upload-batch'),
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current: null,
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busy: false,
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batchTotal: 0,
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batchDone: 0,
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};
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});
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// Render uploads that survived from a previous session.
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pending.forEach((u) => {
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const z = zones[u.kind];
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if (z) addCard(u, z);
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});
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function previewCard(upload, z) {
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const card = document.createElement('div');
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card.className = 'file-preview-card';
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card.dataset.uuid = upload.uuid;
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const ct = upload.content_type || '';
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if (ct.startsWith('image/')) {
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const img = document.createElement('img');
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img.src = upload.url;
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img.alt = upload.filename || '';
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card.appendChild(img);
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} else if (ct.startsWith('video/')) {
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const video = document.createElement('video');
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video.src = upload.url;
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video.muted = true;
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video.autoplay = true;
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video.loop = true;
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card.appendChild(video);
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} else {
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const icon = document.createElement('div');
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icon.className = 'file-preview-icon';
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icon.innerHTML = '<i class="fas fa-file-archive"></i>';
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card.appendChild(icon);
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}
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const name = document.createElement('span');
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name.className = 'file-preview-name';
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name.textContent = upload.filename || '';
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card.appendChild(name);
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if (upload.removable !== false) {
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const remove = document.createElement('button');
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remove.type = 'button';
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remove.className = 'file-preview-remove';
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remove.innerHTML = '<i class="fas fa-times"></i>';
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remove.addEventListener('click', () => deleteUpload(upload.uuid, card, z));
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card.appendChild(remove);
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}
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return card;
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}
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function addCard(upload, z) {
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if (z.single) {
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z.preview.innerHTML = '';
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z.preview.appendChild(previewCard(upload, z));
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if (upload.removable !== false) z.current = upload;
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} else {
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z.preview.appendChild(previewCard(upload, z));
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}
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}
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function uploadFile(file, z) {
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const fd = new FormData();
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fd.append('file', file);
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fd.append('kind', z.kind);
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const xhr = new XMLHttpRequest();
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xhr.open('POST', '/api/uploads/');
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for (const k in csrfHeader) xhr.setRequestHeader(k, csrfHeader[k]);
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xhr.onload = function () {
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z.busy = false;
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if (!z.single) { z.batchDone++; updateBatch(z); }
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if (xhr.status !== 200) {
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try { alert(JSON.parse(xhr.responseText).error || 'Upload failed.'); }
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catch (e) { alert('Upload failed.'); }
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return;
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}
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addCard(JSON.parse(xhr.responseText), z);
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};
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xhr.onerror = function () {
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z.busy = false;
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if (!z.single) { z.batchDone++; updateBatch(z); }
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alert('Network error during upload.');
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};
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xhr.send(fd);
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}
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function deleteUpload(uuid, card, z) {
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const xhr = new XMLHttpRequest();
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xhr.open('POST', '/api/uploads/' + uuid + '/delete/');
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for (const k in csrfHeader) xhr.setRequestHeader(k, csrfHeader[k]);
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xhr.onload = function () {
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if (card && card.parentNode) card.parentNode.removeChild(card);
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if (z && z.current && z.current.uuid === uuid) z.current = null;
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if (opts.onRemove) opts.onRemove(uuid);
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};
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xhr.onerror = function () {
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alert('Network error.');
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};
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xhr.send();
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}
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function handleFiles(files, z) {
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// Single slots: take one file, replace the current upload, and
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// ignore further drops while one is in flight.
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if (z.single) {
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if (z.busy) return;
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const file = files[0];
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if (z.current) deleteUpload(z.current.uuid, null, z);
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z.busy = true;
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uploadFile(file, z);
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return;
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}
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z.batchTotal += files.length;
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updateBatch(z);
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files.forEach((file) => uploadFile(file, z));
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}
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function updateBatch(z) {
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if (!z.batch) return;
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if (z.batchTotal === 0) { z.batch.hidden = true; return; }
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z.batch.hidden = false;
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const status = z.batch.querySelector('.upload-batch-status');
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if (status) {
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status.textContent = 'Uploading ' + z.batchDone + ' of ' + z.batchTotal + ' files';
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}
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if (z.batchDone >= z.batchTotal && z.batchTotal > 0) {
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setTimeout(() => {
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z.batch.hidden = true;
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z.batchTotal = 0;
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z.batchDone = 0;
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}, 2500);
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}
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}
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Object.keys(zones).forEach((kind) => {
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const z = zones[kind];
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if (!z.drop || !z.input) return;
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z.drop.addEventListener('click', () => z.input.click());
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z.drop.addEventListener('keydown', (e) => {
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if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); z.input.click(); }
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});
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['dragenter', 'dragover'].forEach((evt) => z.drop.addEventListener(evt, (e) => {
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e.preventDefault();
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e.stopPropagation();
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z.drop.classList.add('dragover');
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}));
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['dragleave', 'drop'].forEach((evt) => z.drop.addEventListener(evt, (e) => {
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e.preventDefault();
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e.stopPropagation();
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z.drop.classList.remove('dragover');
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}));
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z.drop.addEventListener('drop', (e) => {
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if (e.dataTransfer && e.dataTransfer.files.length) {
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handleFiles(Array.from(e.dataTransfer.files), z);
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}
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});
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z.input.addEventListener('change', () => {
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handleFiles(Array.from(z.input.files), z);
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z.input.value = '';
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});
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});
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// Prevent the browser opening files dropped outside a zone.
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['dragover', 'drop'].forEach((evt) => window.addEventListener(evt, (e) => e.preventDefault()));
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if (opts.onReady) opts.onReady();
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}
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window.PacksUploads = { init: init };
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})();
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