Add a new team to all Github repos in an organization

github-add-team-to-repos.js

/*
 * Adds the specificed team to all the repos in a Github organization.
 * This is a tedious process in the UI.
 * You'll need a version of node greater than 9 to run this
 *
 * https://docs.github.com/en/rest/teams/teams#add-or-update-team-repository-permissions
 *
 * Instructions:
 * 1. Copy this file somewhere locally on your computer, e.g. ~/addteamrepos.js
 * 2. Fill in the uppercase variables below with the right values
 * 3. Run this file: `$ node ~/addteamrepos.js`
 */

const GITHUB_ORG = 'xxxxx'; /* Name of the github organization the team is under and the repos are in */
const GITHUB_ACCESS_TOKEN = 'xxxxxxxxxxxxxxxxxxxxxxx'; /* Create an access token here: https://github.com/settings/tokens */
const TEAM_SLUG = 'team-name'; /* Github team slug, this can be pulled from the URL on the website */
const TEAM_PERMISSION = 'push'; /* 'pull', 'triage', 'push', 'maintain, or 'admin' */
const REPO_OWNER = 'name-of-owner' /* Likely the same as the organization */

const { exec } = require('child_process');

function execPromise(command) {
    return new Promise((resolve, reject) => {
        exec(command, (err, stdout, stderr) => {
            if (err) {
            return reject(err);
            }
            resolve([stdout, stderr]);
        });
    });
}

async function fetchReposPage(org, page) {
    const [response] = await execPromise(
        `curl -i -H "Authorization: token ${GITHUB_ACCESS_TOKEN}" https://api.github.com/orgs/${org}/repos?page=${page}`
    );
    const nextPageRe = /link\: \<.+page\=([0-9]*)\>\; rel\=\"next\"/g;
    const nextPageMatch = nextPageRe.exec(response);
    const nextPage = nextPageMatch ? nextPageMatch[1] : null;
    const repos = JSON.parse(response.slice(response.indexOf('[')));
    return [repos, nextPage];
}

async function fetchRepos(org) {
    let repos = [];
    let page = 1;
    while (page) {
      let [currentRepos, nextPage] =  await fetchReposPage(org, page);
      repos = [...repos, ...currentRepos];
      page = nextPage;
    }
    return repos;
}

async function addTeamToRepo(teamSlug, org, repo, permission, owner) {
    const [out,err] = await execPromise(
      `curl -X PUT -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${GITHUB_ACCESS_TOKEN}" https://api.github.com/orgs/${org}/teams/${teamSlug}/repos/${owner}/${repo} -d \"{\\"permission\\":\\"${permission}\\"}\"`
    );
    console.log(out); // This allows for debugging, but is typically empty on success
    console.log(`...  Added team "${teamSlug}" to repo "${org}/${repo}" with permission "${permission}"`);
}

async function addTeamToRepos(repoNames) {
    /* Add team to each repo */
    console.log(`Adding team "${TEAM_SLUG}" to ${repoNames.length} repos with permission "${TEAM_PERMISSION}"`);
    for (let repo of repoNames) {
        await addTeamToRepo(TEAM_SLUG, GITHUB_ORG, repo, TEAM_PERMISSION, REPO_OWNER);
    }
}

(async () => {
    /* Fetch all repos names for org */
    console.log(`Fetching repos from organization "${GITHUB_ORG}"`);
    const repos = await fetchRepos(GITHUB_ORG);
    const repoNames = repos.map(r => r.name);
    console.log(`... Found ${repoNames.length} repos`)
    await addTeamToRepos(repoNames);
})();