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import './latest-tag-button.css';
import React from 'dom-chef';
import cache from 'webext-storage-cache';
import TagIcon from 'octicon/tag.svg';
import DiffIcon from 'octicon/diff.svg';
import elementReady from 'element-ready';
import * as pageDetect from 'github-url-detection';
import features from '.';
import * as api from '../github-helpers/api';
import pluralize from '../helpers/pluralize';
import GitHubURL from '../github-helpers/github-url';
import {groupButtons} from '../github-helpers/group-buttons';
import getDefaultBranch from '../github-helpers/get-default-branch';
import {getRepoURL, getCurrentBranch, getRepoGQL, getLatestVersionTag} from '../github-helpers';
interface RepoPublishState {
latestTag: string | false;
aheadBy?: number;
}
const getRepoPublishState = cache.function(async (): Promise<RepoPublishState> => {
const {repository} = await api.v4(`
repository(${getRepoGQL()}) {
refs(first: 20, refPrefix: "refs/tags/", orderBy: {
field: TAG_COMMIT_DATE,
direction: DESC
}) {
nodes {
name
tag: target {
oid
... on Tag {
commit: target {
oid
}
}
}
}
}
defaultBranchRef {
target {
... on Commit {
history(first: 20) {
nodes {
oid
}
}
}
}
}
}
`);
if (repository.refs.nodes.length === 0) {
return {
latestTag: false
};
}
const tags = new Map<string, string>();
for (const node of repository.refs.nodes) {
tags.set(node.name, node.tag.commit?.oid ?? node.tag.oid);
}
const latestTag = getLatestVersionTag([...tags.keys()]);
const latestTagOid = tags.get(latestTag)!;
const aheadBy = repository.defaultBranchRef.target.history.nodes.findIndex((node: AnyObject) => node.oid === latestTagOid);
if (aheadBy < 0) {
return {latestTag};
}
return {latestTag, aheadBy};
}, {
maxAge: 1 / 24, // One hour
staleWhileRevalidate: 2,
cacheKey: () => `tag-ahead-by:${getRepoURL()}`
});
async function init(): Promise<false | void> {
const {latestTag, aheadBy} = await getRepoPublishState();
if (!latestTag) {
return false;
}
const breadcrumb = await elementReady('#branch-select-menu');
if (!breadcrumb) {
return;
}
const currentBranch = getCurrentBranch();
const url = new GitHubURL(location.href);
url.assign({
route: url.route || 'tree', // If route is missing, it's a repo root
branch: latestTag
});
const link = (
<a className="btn btn-sm btn-outline ml-2 flex-self-center" href={String(url)}>
<TagIcon/>
</a>
);
breadcrumb.after(link);
if (currentBranch !== latestTag) {
link.append(' ', <span className="css-truncate-target">{latestTag}</span>);
}
if (currentBranch === latestTag || aheadBy === 0) {
link.setAttribute('aria-label', 'You’re on the latest release');
link.classList.add('disabled', 'tooltipped', 'tooltipped-ne');
return;
}
const defaultBranch = await getDefaultBranch();
if (currentBranch === defaultBranch) {
link.append(<sup> +{aheadBy}</sup>);
link.setAttribute(
'aria-label',
aheadBy ?
`${defaultBranch} is ${pluralize(aheadBy, '1 commit', '$$ commits')} ahead of the latest release` :
`The HEAD of ${defaultBranch} isn’t tagged`
);
if (pageDetect.isRepoRoot()) {
const compareLink = (
<a
className="btn btn-sm btn-outline tooltipped tooltipped-ne"
href={`/${getRepoURL()}/compare/${latestTag}...${defaultBranch}`}
aria-label={`Compare ${latestTag}...${defaultBranch}`}
>
<DiffIcon/>
</a>
);
groupButtons([link, compareLink]).classList.add('flex-self-center', 'd-flex');
}
} else {
link.setAttribute('aria-label', 'Visit the latest release');
}
link.classList.add('tooltipped', 'tooltipped-ne');
}
void features.add({
id: __filebasename,
description: 'Adds link to the latest version tag on directory listings and files.',
screenshot: 'https://user-images.githubusercontent.com/1402241/74594998-71df2080-5077-11ea-927c-b484ca656e88.png'
}, {
include: [
pageDetect.isRepoTree,
pageDetect.isSingleFile
],
waitForDomReady: false,
init
});
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