import {svg} from '../svg.ts'; import {htmlEscape} from 'escape-goat'; import {clippie} from 'clippie'; import {showTemporaryTooltip} from '../modules/tippy.ts'; import {GET, POST} from '../modules/fetch.ts'; import {showErrorToast} from '../modules/toast.ts'; import {createElementFromHTML, createElementFromAttrs} from '../utils/dom.ts'; import {isImageFile, isVideoFile} from '../utils.ts'; const {csrfToken, i18n} = window.config; // dropzone has its owner event dispatcher (emitter) export const DropzoneCustomEventReloadFiles = 'dropzone-custom-reload-files'; export const DropzoneCustomEventRemovedFile = 'dropzone-custom-removed-file'; export const DropzoneCustomEventUploadDone = 'dropzone-custom-upload-done'; async function createDropzone(el, opts) { const [{Dropzone}] = await Promise.all([ import(/* webpackChunkName: "dropzone" */'dropzone'), import(/* webpackChunkName: "dropzone" */'dropzone/dist/dropzone.css'), ]); return new Dropzone(el, opts); } export function generateMarkdownLinkForAttachment(file, {width, dppx} = {}) { let fileMarkdown = `[${file.name}](/attachments/${file.uuid})`; if (isImageFile(file)) { fileMarkdown = `!${fileMarkdown}`; if (width > 0 && dppx > 1) { // Scale down images from HiDPI monitors. This uses the tag because it's the only // method to change image size in Markdown that is supported by all implementations. // Make the image link relative to the repo path, then the final URL is "/sub-path/owner/repo/attachments/{uuid}" fileMarkdown = `${htmlEscape(file.name)}`; } else { // Markdown always renders the image with a relative path, so the final URL is "/sub-path/owner/repo/attachments/{uuid}" // TODO: it should also use relative path for consistency, because absolute is ambiguous for "/sub-path/attachments" or "/attachments" fileMarkdown = `![${file.name}](/attachments/${file.uuid})`; } } else if (isVideoFile(file)) { fileMarkdown = ``; } return fileMarkdown; } function addCopyLink(file) { // Create a "Copy Link" element, to conveniently copy the image or file link as Markdown to the clipboard // The "" element has a hardcoded cursor: pointer because the default is overridden by .dropzone const copyLinkEl = createElementFromHTML(`
${svg('octicon-copy', 14)} Copy link
`); copyLinkEl.addEventListener('click', async (e) => { e.preventDefault(); const success = await clippie(generateMarkdownLinkForAttachment(file)); showTemporaryTooltip(e.target, success ? i18n.copy_success : i18n.copy_error); }); file.previewTemplate.append(copyLinkEl); } /** * @param {HTMLElement} dropzoneEl */ export async function initDropzone(dropzoneEl) { const listAttachmentsUrl = dropzoneEl.closest('[data-attachment-url]')?.getAttribute('data-attachment-url'); const removeAttachmentUrl = dropzoneEl.getAttribute('data-remove-url'); const attachmentBaseLinkUrl = dropzoneEl.getAttribute('data-link-url'); let disableRemovedfileEvent = false; // when resetting the dropzone (removeAllFiles), disable the "removedfile" event let fileUuidDict = {}; // to record: if a comment has been saved, then the uploaded files won't be deleted from server when clicking the Remove in the dropzone const opts = { url: dropzoneEl.getAttribute('data-upload-url'), headers: {'X-Csrf-Token': csrfToken}, acceptedFiles: ['*/*', ''].includes(dropzoneEl.getAttribute('data-accepts')) ? null : dropzoneEl.getAttribute('data-accepts'), addRemoveLinks: true, dictDefaultMessage: dropzoneEl.getAttribute('data-default-message'), dictInvalidFileType: dropzoneEl.getAttribute('data-invalid-input-type'), dictFileTooBig: dropzoneEl.getAttribute('data-file-too-big'), dictRemoveFile: dropzoneEl.getAttribute('data-remove-file'), timeout: 0, thumbnailMethod: 'contain', thumbnailWidth: 480, thumbnailHeight: 480, }; if (dropzoneEl.hasAttribute('data-max-file')) opts.maxFiles = Number(dropzoneEl.getAttribute('data-max-file')); if (dropzoneEl.hasAttribute('data-max-size')) opts.maxFilesize = Number(dropzoneEl.getAttribute('data-max-size')); // there is a bug in dropzone: if a non-image file is uploaded, then it tries to request the file from server by something like: // "http://localhost:3000/owner/repo/issues/[object%20Event]" // the reason is that the preview "callback(dataURL)" is assign to "img.onerror" then "thumbnail" uses the error object as the dataURL and generates '' const dzInst = await createDropzone(dropzoneEl, opts); dzInst.on('success', (file, resp) => { file.uuid = resp.uuid; fileUuidDict[file.uuid] = {submitted: false}; const input = createElementFromAttrs('input', {name: 'files', type: 'hidden', id: `dropzone-file-${resp.uuid}`, value: resp.uuid}); dropzoneEl.querySelector('.files').append(input); addCopyLink(file); dzInst.emit(DropzoneCustomEventUploadDone, {file}); }); dzInst.on('removedfile', async (file) => { if (disableRemovedfileEvent) return; dzInst.emit(DropzoneCustomEventRemovedFile, {fileUuid: file.uuid}); document.querySelector(`#dropzone-file-${file.uuid}`)?.remove(); // when the uploaded file number reaches the limit, there is no uuid in the dict, and it doesn't need to be removed from server if (removeAttachmentUrl && fileUuidDict[file.uuid] && !fileUuidDict[file.uuid].submitted) { await POST(removeAttachmentUrl, {data: new URLSearchParams({file: file.uuid})}); } }); dzInst.on('submit', () => { for (const fileUuid of Object.keys(fileUuidDict)) { fileUuidDict[fileUuid].submitted = true; } }); dzInst.on(DropzoneCustomEventReloadFiles, async () => { try { const resp = await GET(listAttachmentsUrl); const respData = await resp.json(); // do not trigger the "removedfile" event, otherwise the attachments would be deleted from server disableRemovedfileEvent = true; dzInst.removeAllFiles(true); disableRemovedfileEvent = false; dropzoneEl.querySelector('.files').innerHTML = ''; for (const el of dropzoneEl.querySelectorAll('.dz-preview')) el.remove(); fileUuidDict = {}; for (const attachment of respData) { const file = {name: attachment.name, uuid: attachment.uuid, size: attachment.size}; const imgSrc = `${attachmentBaseLinkUrl}/${file.uuid}`; dzInst.emit('addedfile', file); dzInst.emit('thumbnail', file, imgSrc); dzInst.emit('complete', file); addCopyLink(file); // it is from server response, so no "type" fileUuidDict[file.uuid] = {submitted: true}; const input = createElementFromAttrs('input', {name: 'files', type: 'hidden', id: `dropzone-file-${file.uuid}`, value: file.uuid}); dropzoneEl.querySelector('.files').append(input); } if (!dropzoneEl.querySelector('.dz-preview')) { dropzoneEl.classList.remove('dz-started'); } } catch (error) { // TODO: if listing the existing attachments failed, it should stop from operating the content or attachments, // otherwise the attachments might be lost. showErrorToast(`Failed to load attachments: ${error}`); console.error(error); } }); dzInst.on('error', (file, message) => { showErrorToast(`Dropzone upload error: ${message}`); dzInst.removeFile(file); }); if (listAttachmentsUrl) dzInst.emit(DropzoneCustomEventReloadFiles); return dzInst; }