// ==UserScript==// @name         GitHub: PR author avatar as tab icon// @namespace    https://github.com/rybak// @version      6// @description  Sets GitHub PR tab icon (favicon) to author's avatar// @author       Andrei Rybak// @homepageURL  https://github.com/rybak/github-pr-avatars-tab-icons// @license      MIT// @match        https://github.com/*/pull/*// @icon         https://github.githubassets.com/favicons/favicon-dark.png// @grant        none// ==/UserScript==/** Copyright (c) 2023 Andrei Rybak** Permission is hereby granted, free of charge, to any person obtaining a copy* of this software and associated documentation files (the "Software"), to deal* in the Software without restriction, including without limitation the rights* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell* copies of the Software, and to permit persons to whom the Software is* furnished to do so, subject to the following conditions:** The above copyright notice and this permission notice shall be included in all* copies or substantial portions of the Software.** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE* SOFTWARE.*//** Doesn't work very good, because GitHub's tab icons aren't static.* R###lts of GitHub Actions builds are reflected in the icons dynamically.*/(function() {'use strict';const LOG_PREFIX = '[PR avatars]';function error(...toLog) {console.error(LOG_PREFIX, ...toLog);}function log(...toLog) {console.log(LOG_PREFIX, ...toLog);}/** Extracts the parts 'owner_repo' and 'pull_number' out of the current page's URL.*/function getPullRequestUrlParts() {/** URL might be just a PR link:*   https://github.com/rybak/atlassian-tweaks/pull/10* or a subpage of a PR:*   https://github.com/rybak/atlassian-tweaks/pull/10/commits* R###lt will be*   'rybak/atlassian-tweaks' and '10'*/const m = document.location.pathname.match("^/(.*)/pull/(\\d+)");if (!m) {error("Cannot extract owner_repo and pull_number for REST API URL from", document.location.pathname);return null;}return {'owner_repo': m[1],'pull_number': m[2]};}/** Generates a URL for accessing the data about the pull request via GitHub's REST API.* https://docs.github.com/en/rest/pulls/pulls?apiVersion=2022-11-28#get-a-pull-request*/function getRestApiPullRequestUrl() {const parts = getPullRequestUrlParts();if (!parts) {return null;}return `https://api.github.com/repos/${parts.owner_repo}/pulls/${parts.pull_number}`;}/** Replaces favicon with the PR author's avatar.*/async function setFavicon() {const prUrl = getRestApiPullRequestUrl();if (!prUrl) {return;}try {const response = await fetch(prUrl);const json = await response.json();const avatarUrl = json.user.avatar_url;if (!avatarUrl) {error("Cannot find the avatar URL", json);return;}const faviconNodes = document.querySelectorAll('link[rel="icon"], link[rel="alternate icon"]');if (!faviconNodes || faviconNodes.length == 0) {error("Cannot find favicon elements.");return;}log("New URL", avatarUrl);faviconNodes.forEach(node => {log("Replacing old URL =", node.href);node.href = avatarUrl;});} catch (e) {error(`Cannot load ${prUrl}. Got error`, e);}}setFavicon();})();