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import React from 'dom-chef';
import select from 'select-dom';
import * as pageDetect from 'github-url-detection';
import PullRequestIcon from 'octicon/git-pull-request.svg';
import features from '.';
import * as api from '../github-helpers/api';
import {botSelectors} from './dim-bots';
import getDefaultBranch from '../github-helpers/get-default-branch';
import {getRepositoryInfo, getRepoGQL} from '../github-helpers';
type RepositoryReference = {
owner: string;
branchExists: boolean;
url?: string;
label: string;
};
type BranchInfo = {
baseRef: string;
baseRefName: string;
headRef: string;
headOwner: {
login: string;
};
headRefName: string;
headRepository?: {
url: string;
};
};
function normalizeBranchInfo(data: BranchInfo): {
base?: RepositoryReference;
head?: RepositoryReference;
} {
const currentRepository = getRepositoryInfo();
const base = {} as RepositoryReference; // eslint-disable-line @typescript-eslint/consistent-type-assertions
base.branchExists = Boolean(data.baseRef);
base.label = data.baseRefName;
if (base.branchExists) {
base.url = `/${currentRepository.owner!}/${currentRepository.name!}/tree/${data.baseRefName}`;
}
const head = {} as RepositoryReference; // eslint-disable-line @typescript-eslint/consistent-type-assertions
head.branchExists = Boolean(data.headRef);
head.owner = data.headOwner.login;
if (data.headOwner.login === currentRepository.owner) {
head.label = data.headRefName;
} else {
head.label = `${data.headOwner.login}:${data.headRefName}`;
}
if (head.branchExists) { // If the branch hasn't been deleted
head.url = `${data.headRepository!.url}/tree/${data.headRefName}`;
} else if (data.headRepository) { // If the repo hasn't been deleted
head.url = data.headRepository.url;
}
return {base, head};
}
function buildQuery(issueIds: string[]): string {
return `
repository(${getRepoGQL()}) {
${issueIds.map(id => `
${id}: pullRequest(number: ${id.replace(/\D/g, '')}) {
baseRef {id}
headRef {id}
baseRefName
headRefName
headRepository {url}
headOwner: headRepositoryOwner {login}
}
`).join('\n')}
}
`;
}
function createLink(reference: RepositoryReference): HTMLSpanElement {
return (
<span
className="commit-ref css-truncate user-select-contain mb-n1"
style={(reference.branchExists ? {} : {textDecoration: 'line-through'})}
>
{
reference.url ?
<a title={(reference.branchExists ? reference.label : 'Deleted')} href={reference.url}>
{reference.label}
</a> :
<span className="unknown-repo">unknown repository</span>
}
</span>
);
}
async function init(): Promise<false | void> {
const prLinks = select.all('.js-issue-row .js-navigation-open[data-hovercard-type="pull_request"]')
// Exclude bots
.filter(link => !link.parentElement?.querySelector(botSelectors.join()));
if (prLinks.length === 0) {
return false;
}
const currentRepository = getRepositoryInfo();
const query = buildQuery(prLinks.map(pr => pr.id));
const [data, defaultBranch] = await Promise.all([
api.v4(query),
getDefaultBranch()
]);
for (const prLink of prLinks) {
if (!data.repository[prLink.id].headOwner) { // 👻 @ghost user
return;
}
let branches;
let {base, head} = normalizeBranchInfo(data.repository[prLink.id]);
if (base!.label === defaultBranch) {
base = undefined;
}
if (head!.owner !== currentRepository.owner) {
head = undefined;
}
if (base && head) {
branches = <>From {createLink(head)} into {createLink(base)}</>;
} else if (head) {
branches = <>From {createLink(head)}</>;
} else if (base) {
branches = <>To {createLink(base)}</>;
} else {
continue;
}
prLink.parentElement!.querySelector('.text-small.text-gray')!.append(
<span className="issue-meta-section d-inline-block">
<PullRequestIcon/> {branches}
</span>
);
}
}
void features.add({
id: __filebasename,
description: 'Shows head and base branches in PR lists if they’re significant: The base branch is added when it’s not the repo’s default branch; The head branch is added when it’s from the same repo or the PR is by the current user.',
screenshot: 'https://user-images.githubusercontent.com/1402241/51428391-ae9ed500-1c35-11e9-8e54-6b6a424fede4.png'
}, {
include: [
pageDetect.isRepoDiscussionList
],
init
});
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