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import './tag-changes-link.css';
import React from 'dom-chef';
import {$, $$, elementExists} from 'select-dom';
import domLoaded from 'dom-loaded';
import {DiffIcon} from '@primer/octicons-react';
import * as pageDetect from 'github-url-detection';
import tinyVersionCompare from 'tiny-version-compare';
import features from '../feature-manager.js';
import fetchDom from '../helpers/fetch-dom.js';
import {buildRepoURL, getRepo, parseTag} from '../github-helpers/index.js';
type TagDetails = {
element: HTMLElement;
commit: string;
tag: string;
version: string;
namespace: string;
};
async function getNextPage(): Promise<DocumentFragment> {
const nextPageLink = $('.pagination a:last-child');
if (nextPageLink) {
return fetchDom(nextPageLink.href);
}
if (pageDetect.isSingleReleaseOrTag()) {
const [, tag = ''] = getRepo()!.path.split('releases/tag/', 2); // Already URL-encoded
return fetchDom(buildRepoURL(`tags?after=${tag}`));
}
return new DocumentFragment();
}
function parseTags(element: HTMLElement): TagDetails {
// Safari doesn't correctly parse links if they're loaded via AJAX #3899
const {pathname: tagUrl} = new URL($(['a[href*="/tree/"]', 'a[href*="/tag/"]'], element)!.href);
const tag = /\/(?:releases\/tag|tree)\/(.*)/.exec(tagUrl)![1];
return {
element,
tag,
commit: $('[href*="/commit/"]', element)!.textContent.trim(),
...parseTag(decodeURIComponent(tag)), // `version`, `namespace`
};
}
function getPreviousTag(current: number, allTags: TagDetails[]): string | undefined {
let unmatchedNamespaceTag: string | undefined;
for (let next = current + 1; next < allTags.length; next++) {
// Find a version on a different commit, if there are multiple tags on the same one
if (allTags[next].commit === allTags[current].commit) {
continue;
}
// Find an earlier version
if (tinyVersionCompare(allTags[current].version, allTags[next].version) < 1) {
continue;
}
if (allTags[current].namespace === allTags[next].namespace) {
return allTags[next].tag;
}
// If no matching namespace is found, just use the next one
if (!unmatchedNamespaceTag) {
unmatchedNamespaceTag = allTags[next].tag;
}
}
return unmatchedNamespaceTag;
}
async function init(): Promise<void> {
document.documentElement.classList.add('rgh-tag-changes-link');
const tagsSelector = [
// https://github.com/facebook/react/releases (release in releases list)
'.repository-content .col-md-2',
// https://github.com/facebook/react/tags (tags list)
'.Box-row .commit',
// https://github.com/facebook/react/releases/tag/v17.0.2 (single release page)
'.Box-body .border-md-bottom',
];
// Look for tags in the current page and the next page
const pages = [document, await getNextPage()];
await domLoaded;
const allTags = $$(tagsSelector, pages).map(tag => parseTags(tag));
for (const [index, container] of allTags.entries()) {
const previousTag = getPreviousTag(index, allTags);
if (!previousTag) {
continue;
}
const lastLinks = $$([
'.Link--muted[data-hovercard-type="commit"]', // Link to commit in release sidebar
'.list-style-none > .d-inline-block:last-child', // Link to source tarball under release tag
], container.element);
for (const lastLink of lastLinks) {
const currentTag = allTags[index].tag;
const compareLink = (
<a
className="Link--muted tooltipped tooltipped-n"
aria-label={`See commits between ${decodeURIComponent(previousTag)} and ${decodeURIComponent(currentTag)}`}
href={buildRepoURL(`compare/${previousTag}...${currentTag}`)}
>
<DiffIcon/> {pageDetect.isEnterprise() ? 'Commits' : <span className="ml-1 wb-break-all">Commits</span>}
</a>
);
// The page of a tag without a release still uses the old layout #5037
if (pageDetect.isEnterprise() || pageDetect.isTags() || (pageDetect.isSingleReleaseOrTag() && elementExists('.release'))) {
lastLink.after(
<li className={lastLink.className + ' rgh-changelog-link'}>
{compareLink}
</li>,
);
// Fix spacing issue when the window is < 700px wide https://github.com/refined-github/refined-github/pull/3841#issuecomment-754325056
lastLink.classList.remove('flex-auto');
continue;
}
lastLink.parentElement!.after(
<div className={'rgh-changelog-link ' + (pageDetect.isReleases() ? 'mb-md-2 mr-3 mr-md-0' : 'mr-4 mb-2')}>
{compareLink}
</div>,
);
if (pageDetect.isReleases()) {
lastLink.classList.remove('mb-2');
lastLink.parentElement!.classList.remove('mb-md-2');
}
}
}
}
void features.add(import.meta.url, {
include: [
pageDetect.isReleasesOrTags,
pageDetect.isSingleReleaseOrTag,
],
exclude: [
pageDetect.isEmptyRepoRoot,
],
deduplicate: 'has-rgh-inner',
init,
});
/*
Test URLs:
- https://github.com/refined-github/refined-github/releases
- https://github.com/refined-github/refined-github/tags
- https://github.com/refined-github/refined-github/releases/tag/23.2.5
*/
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