132 lines
4.6 KiB
JavaScript
132 lines
4.6 KiB
JavaScript
document.addEventListener('DOMContentLoaded', () => {
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const form = document.getElementById('upload-form');
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if (!form) return;
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const upload = document.getElementById('file-upload');
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const uploadLink = document.getElementById('file-upload-link');
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const uploadField = document.getElementById('field-upload');
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const neverExpireCheckbox = document.getElementById('field-never_expire');
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const expireAfterDaysField = document.getElementById('field-expire_after_days');
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const autogenUrlCheckbox = document.getElementById('field-autogen_url');
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const slugField = document.getElementById('field-slug');
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neverExpireCheckbox.addEventListener('change', () => {
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expireAfterDaysField.disabled = neverExpireCheckbox.checked;
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});
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autogenUrlCheckbox.addEventListener('change', () => {
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slugField.disabled = autogenUrlCheckbox.checked;
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});
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let uploadForm;
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form.addEventListener('submit', e => {
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e.preventDefault();
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if (!uploadForm || uploadForm.isFinished()) {
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uploadForm = new UploadForm(form, upload, uploadLink, uploadField.files[0].name);
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uploadForm.updateView();
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uploadForm.start();
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}
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});
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});
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function UploadForm(form, upload, uploadLink, fileName) {
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this.form = form;
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this.upload = upload;
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this.uploadLink = uploadLink;
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this.fileName = fileName;
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this.progressBar = this.upload.querySelector('.progress-bar');
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this.progressBarContent = this.progressBar.querySelector('.content');
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this.status = this.upload.querySelector('.status');
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this.speed = this.status.querySelector('.speed');
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this.finished = false;
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this.xferSpeed = [];
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this.lastTransferTime = null;
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this.xhr = new XMLHttpRequest();
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this.xhr.responseType = 'json';
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this.xhr.upload.addEventListener('progress', e => {
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if (e.lengthComputable) {
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this.progressBar.classList.remove('undefined');
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let percent = ((e.loaded / e.total) * 100).toFixed(2) + '%';
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this.progressBar.style = `--progress: ${percent}`;
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this.progressBarContent.innerText = percent;
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this.updateSpeed(e.loaded);
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} else {
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this.progressBar.classList.add('undefined');
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}
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});
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this.xhr.upload.addEventListener('loadstart', () => {
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this.status.classList.remove('hidden');
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});
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this.xhr.addEventListener('load', () => {
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this.finished = true;
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let response = this.xhr.response;
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console.log('done', response);
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if (response.status === 'error') {
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if (response.messages) {
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this.restoreView();
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window.applyFormMessages(this.form, response.messages);
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}
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} else if (response.url) {
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this.status.innerHTML = 'Done!';
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this.uploadLink.querySelector('.content').innerText = response.url;
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this.uploadLink.classList.remove('hidden');
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} else {
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window.location.reload();
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}
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});
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this.xhr.addEventListener('error', (e) => {
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this.finished = true;
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console.error('error', e);
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this.status.innerHTML = 'Error; upload was interrupted.';
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});
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}
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UploadForm.prototype.isFinished = function () {
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return this.finished;
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}
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UploadForm.prototype.updateView = function () {
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this.upload.querySelector('.name').innerText = this.fileName;
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this.form.classList.add('hidden');
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this.upload.classList.remove('hidden');
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this.status.innerHTML = `Uploading @ <span class="speed">--</span>`;
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this.speed = this.status.querySelector('.speed');
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}
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UploadForm.prototype.restoreView = function () {
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this.status.classList.add('hidden');
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this.upload.classList.add('hidden');
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this.form.classList.remove('hidden');
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};
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UploadForm.prototype.start = function () {
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const formData = new FormData(this.form);
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this.xhr.open('POST', this.form.action);
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this.xhr.send(formData);
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}
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const units = ['K', 'M', 'G', 'T'];
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UploadForm.prototype.updateSpeed = function (loaded) {
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const time = new Date().getTime();
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if (this.lastTransferTime) {
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this.xferSpeed.push((loaded - this.lastLoaded) / (time - this.lastTransferTime));
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if (this.xferSpeed.length > 100) this.xferSpeed = this.xferSpeed.slice(1);
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let speed = this.xferSpeed.reduce((v, c) => v + c) / this.xferSpeed.length;
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let unit = 0;
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while (speed >= 1000 && unit < units.length - 1) {
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speed /= 1000;
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unit++;
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}
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this.speed.innerText = (speed).toFixed(2) + units[unit] + 'Bps';
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}
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this.lastTransferTime = time;
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this.lastLoaded = loaded;
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}
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