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import select from 'select-dom';
import * as api from '../libs/api';
import features from '../libs/features';
import {getDiscussionNumber, getOP, getRepoGQL} from '../libs/utils';
import onPrMergePanelOpen from '../libs/on-pr-merge-panel-open';
interface Author {
email: string;
name: string; // Used when the commit isn't linked to a GitHub user
user: {
name: string;
login: string;
};
}
let coAuthors: Author[];
async function fetchCoAuthoredData(): Promise<Author[]> {
const userInfo = await api.v4(`
repository(${getRepoGQL()}) {
pullRequest(number: ${getDiscussionNumber()}) {
commits(first: 100) {
nodes {
commit {
author {
email
name
user {
login
name
}
}
}
}
}
}
}
`);
return userInfo.repository.pullRequest.commits.nodes.map((node: AnyObject) => node.commit.author as Author);
}
function addCoAuthors(): void {
const field = select<HTMLTextAreaElement>('#merge_message_field')!;
if (field.value.includes('Co-authored-by: ')) {
// Don't affect existing information
return;
}
const addendum = new Map();
for (const {email, user, name} of coAuthors) {
if (user) {
addendum.set(user.login, `Co-authored-by: ${user.name} <${email}>`);
} else {
addendum.set(name, `Co-authored-by: ${name} <${email}>`);
}
}
addendum.delete(getOP());
if (addendum.size > 0) {
field.value += '\n\n' + [...addendum.values()].join('\n');
}
}
async function init(): Promise<void> {
coAuthors = await fetchCoAuthoredData();
onPrMergePanelOpen(addCoAuthors);
}
features.add({
id: __featureName__,
description: 'Adds `co-authored-by` to the commit when merging PRs with multiple committers.',
screenshot: 'https://user-images.githubusercontent.com/1402241/51468821-71a42100-1da2-11e9-86aa-fc2a6a29da84.png',
include: [
features.isPRConversation
],
load: features.onAjaxedPages,
init
});
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