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import './hide-useless-comments.css';
import delay from 'delay';
import React from 'dom-chef';
import select from 'select-dom';
import delegate from 'delegate-it';
import * as pageDetect from 'github-url-detection';
import features from '.';
import isUselessComment from '../helpers/is-useless-comment';
async function unhide(event: delegate.Event): Promise<void> {
for (const comment of select.all('.rgh-hidden-comment')) {
comment.hidden = false;
}
await delay(10); // "Similar comments" aren't expanded without this in Safari #3830
// Expand all "similar comments" boxes
for (const similarCommentsExpandButton of select.all('.rgh-hidden-comment > summary')) {
similarCommentsExpandButton.click();
}
select('.rgh-hidden-comment')!.scrollIntoView();
event.delegateTarget.parentElement!.remove();
}
function hideComment(comment: HTMLElement): void {
comment.hidden = true;
comment.classList.add('rgh-hidden-comment');
}
function init(): void {
let uselessCount = 0;
for (const similarCommentsBox of select.all('.js-discussion .Details-element:not([data-body-version])')) {
hideComment(similarCommentsBox);
uselessCount++;
}
for (const commentText of select.all('.comment-body > p:only-child')) {
if (!isUselessComment(commentText.textContent!)) {
continue;
}
// Comments that contain useful images shouldn't be removed
if (select.exists('a img', commentText)) {
continue;
}
// Ensure that they're not by VIPs (owner, collaborators, etc)
const comment = commentText.closest<HTMLElement>('.js-timeline-item')!;
if (select.exists('.timeline-comment-label', comment)) {
continue;
}
// If the person is having a conversation, then don't hide it
const author = select('.author', comment)!.getAttribute('href')!;
// If the first comment left by the author isn't a useless comment
// (previously hidden or about to be hidden), then leave this one as well
const previousComment = select(`.js-timeline-item:not([hidden]) .unminimized-comment .author[href="${author}"]`);
if (previousComment?.closest('.js-timeline-item') !== comment) {
continue;
}
hideComment(comment);
uselessCount++;
}
if (uselessCount > 0) {
select('.discussion-timeline-actions')!.prepend(
<p className="rgh-useless-comments-note">
{`${uselessCount} unhelpful comment${uselessCount > 1 ? 's were' : ' was'} automatically hidden. `}
<button className="btn-link text-emphasized rgh-unhide-useless-comments" type="button">Show</button>
</p>,
);
delegate(document, '.rgh-unhide-useless-comments', 'click', unhide);
}
}
void features.add(__filebasename, {
include: [
pageDetect.isIssue,
],
deduplicate: 'has-rgh-inner',
init,
});
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