为 GitHub 增加额外的功能。
目前为
// ==UserScript==
// @name GitHub Plus
// @name:zh-CN GitHub 增强
// @namespace http://tampermonkey.net/
// @version 0.1.3
// @description Enhance GitHub with additional features.
// @description:zh-CN 为 GitHub 增加额外的功能。
// @author PRO-2684
// @match https://github.com/*
// @run-at document-start
// @icon http://github.com/favicon.ico
// @license gpl-3.0
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_deleteValue
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// @grant GM_addValueChangeListener
// @require https://update.gf.qytechs.cn/scripts/470224/1456932/Tampermonkey%20Config.js
// ==/UserScript==
(function() {
'use strict';
/**
* The color used for logging. Matches the color of the GitHub.
* @type {string}
*/
const themeColor = "#f78166";
/**
* Regular expression to match the expanded assets URL. (https://github.com/<username>/<repo>/releases/expanded_assets/<version>)
*/
const expandedAssetsRegex = /https:\/\/github\.com\/([^/]+)\/([^/]+)\/releases\/expanded_assets\/([^/]+)/;
/**
* Data about the release. Maps `owner`, `repo` and `version` to the details of a release. Details are `Promise` objects if exist.
*/
let releaseData = {};
/**
* Rate limit data for the GitHub API.
* @type {Object}
* @property {number} limit The maximum number of requests that the consumer is permitted to make per hour.
* @property {number} remaining The number of requests remaining in the current rate limit window.
* @property {number} reset The time at which the current rate limit window resets in UTC epoch seconds.
*/
let rateLimit = {
limit: -1,
remaining: -1,
reset: -1
};
// Configuration
const configDesc = {
$default: {
autoClose: false
},
token: {
name: "Personal Access Token",
title: "Your personal access token for GitHub API, starting with `github_pat_` (used for increasing rate limit)",
type: "str",
},
debug: {
name: "Debug",
title: "Enable debug mode",
type: "bool",
},
releaseUploader: {
name: "Release Uploader",
title: "Show who uploaded a release asset",
type: "bool",
value: true,
},
releaseDownloads: {
name: "Release Downloads",
title: "Show how many times a release asset has been downloaded",
type: "bool",
value: true,
},
releaseHistogram: {
name: "Release Histogram",
title: "Show a histogram of download counts for each release asset",
type: "bool",
},
trackingPrevention: {
name: "Tracking Prevention",
title: "Prevent some tracking by GitHub",
type: "bool",
value: true,
}
};
const config = new GM_config(configDesc);
// General functions
const $ = document.querySelector.bind(document);
const $$ = document.querySelectorAll.bind(document);
/**
* Log the given arguments if debug mode is enabled.
* @param {...any} args The arguments to log.
*/
function log(...args) {
if (config.get("debug")) console.log("%c[GitHub Plus]%c", `color:${themeColor};`, "color: unset;", ...args);
}
/**
* Warn the given arguments.
* @param {...any} args The arguments to warn.
*/
function warn(...args) {
console.warn("%c[GitHub Plus]%c", `color:${themeColor};`, "color: unset;", ...args);
}
/**
* Fetch the given URL with the personal access token, if given. Also updates rate limit.
* @param {string} url The URL to fetch.
* @param {RequestInit} options The options to pass to `fetch`.
* @returns {Promise<Response>} The response from the fetch.
*/
async function fetchWithToken(url, options) {
const token = config.get("token");
if (token) {
if (!options) options = {};
if (!options.headers) options.headers = {};
options.headers.accept = "application/vnd.github+json";
options.headers["X-GitHub-Api-Version"] = "2022-11-28";
options.headers.Authorization = `Bearer ${token}`;
}
const r = await fetch(url, options);
// Update rate limit
rateLimit.limit = parseInt(r.headers.get("X-RateLimit-Limit"));
rateLimit.remaining = parseInt(r.headers.get("X-RateLimit-Remaining"));
rateLimit.reset = parseInt(r.headers.get("X-RateLimit-Reset"));
const resetDate = new Date(rateLimit.reset * 1000).toLocaleString();
log(`Rate limit: remaining ${rateLimit.remaining}/${rateLimit.limit}, resets at ${resetDate}`);
if (r.status === 403 || r.status === 429) { // If we get 403 or 429, we've hit the rate limit.
throw new Error(`Rate limit exceeded! Will reset at ${resetDate}`);
} else if (rateLimit.remaining === 0) {
warn(`Rate limit has been exhausted! Will reset at ${resetDate}`);
}
return r;
}
// Release-* features
/**
* Get the release data for the given owner, repo and version.
* @param {string} owner The owner of the repository.
* @param {string} repo The repository name.
* @param {string} version The version tag of the release.
* @returns {Promise<Object>} The release data, which resolves to an object mapping download link to details.
*/
async function getReleaseData(owner, repo, version) {
if (!releaseData[owner]) releaseData[owner] = {};
if (!releaseData[owner][repo]) releaseData[owner][repo] = {};
if (!releaseData[owner][repo][version]) {
const promise = fetchWithToken(`https://api.github.com/repos/${owner}/${repo}/releases/tags/${version}`).then(
response => response.json()
).then(data => {
log(`Fetched release data for ${owner}/${repo}@${version}:`, data);
const assets = {};
for (const asset of data.assets) {
assets[asset.browser_download_url] = {
downloads: asset.download_count,
uploader: {
name: asset.uploader.login,
url: asset.uploader.html_url
}
};
}
log(`Processed release data for ${owner}/${repo}@${version}:`, assets);
return assets;
});
releaseData[owner][repo][version] = promise;
}
return releaseData[owner][repo][version];
}
/**
* Create a link to the uploader's profile.
* @param {Object} uploader The uploader information.
* @param {string} uploader.name The name of the uploader.
* @param {string} uploader.url The URL to the uploader's profile.
*/
function createUploaderLink(uploader) {
const link = document.createElement("a");
link.textContent = "@" + uploader.name;
link.href = uploader.url;
link.title = `Uploaded by @${uploader.name}`;
link.setAttribute("class", "color-fg-muted text-sm-left flex-auto ml-md-3 nowrap");
return link;
}
/**
* Create a span element with the given download count.
* @param {number} downloads The download count.
*/
function createDownloadCount(downloads) {
const downloadCount = document.createElement("span");
downloadCount.textContent = `${downloads} DL`;
downloadCount.title = `${downloads} downloads`;
downloadCount.setAttribute("class", "color-fg-muted text-sm-left flex-shrink-0 flex-grow-0 ml-md-3 nowrap");
return downloadCount;
}
/**
* Show a histogram of the download counts for the given release entry.
* @param {HTMLElement} asset One of the release assets.
* @param {number} value The download count of the asset.
* @param {number} max The maximum download count of all assets.
*/
function showHistogram(asset, value, max) {
asset.style.setProperty("--percent", `${value / max * 100}%`);
}
/**
* Adding additional info (download count) to the release entries under the given element.
* @param {HTMLElement} el The element to search for release entries.
* @param {Object} info Additional information about the release (owner, repo, version).
* @param {string} info.owner The owner of the repository.
* @param {string} info.repo The repository name.
* @param {string} info.version The version of the release.
*/
async function addAdditionalInfoToRelease(el, info) {
const entries = el.querySelectorAll("ul > li");
const assets = Array.from(entries).filter(asset => asset.querySelector("svg.octicon-package"));
const releaseData = await getReleaseData(info.owner, info.repo, info.version);
if (!releaseData) return;
const maxDownloads = Math.max(0, ...Object.values(releaseData).map(asset => asset.downloads));
assets.forEach(asset => {
const downloadLink = asset.children[0].querySelector("a")?.href;
const statistics = asset.children[1];
const assetInfo = releaseData[downloadLink];
if (!assetInfo) return;
asset.classList.add("ghp-release-asset");
const size = statistics.querySelector("span.flex-auto");
size.classList.remove("flex-auto");
size.classList.add("flex-shrink-0", "flex-grow-0");
if (config.get("releaseDownloads")) {
const downloadCount = createDownloadCount(assetInfo.downloads);
statistics.prepend(downloadCount);
}
if (config.get("releaseUploader")) {
const uploaderLink = createUploaderLink(assetInfo.uploader);
statistics.prepend(uploaderLink);
}
if (config.get("releaseHistogram") && maxDownloads > 0 && assets.length > 1) {
showHistogram(asset, assetInfo.downloads, maxDownloads);
}
});
}
/**
* Handle the `include-fragment-replace` event.
* @param {CustomEvent} event The event object.
*/
function onFragmentReplace(event) {
const self = event.target;
const src = self.src;
const match = expandedAssetsRegex.exec(src);
if (!match) return;
const [_, owner, repo, version] = match;
const info = { owner, repo, version };
const fragment = event.detail.fragment;
log("Found expanded assets:", fragment);
for (const child of fragment.children) {
addAdditionalInfoToRelease(child, info);
}
}
/**
* Find all release entries and setup listeners to show the download count.
*/
function setupListeners() {
log("Calling setupListeners");
if (!config.get("releaseDownloads") && !config.get("releaseUploader") && !config.get("releaseHistogram")) return; // No need to run
// IncludeFragmentElement: https://github.com/github/include-fragment-element/blob/main/src/include-fragment-element.ts
const fragments = document.querySelectorAll('[data-hpc] details[data-view-component="true"] include-fragment');
fragments.forEach(fragment => {
fragment.addEventListener("include-fragment-replace", onFragmentReplace, { once: true });
});
}
document.addEventListener("DOMContentLoaded", setupListeners);
// Examine event listeners on `document`, and you can see the event listeners for the `turbo:*` events. (Remember to check `Framework Listeners`)
document.addEventListener("turbo:load", setupListeners);
// Other possible approaches and reasons against them:
// - Use `MutationObserver` - Not efficient
// - Hook `CustomEvent` to make `include-fragment-replace` events bubble - Monkey-patching
// - Patch `IncludeFragmentElement.prototype.fetch`, just like GitHub itself did at `https://github.githubassets.com/assets/app/assets/modules/github/include-fragment-element-hacks.ts`
// - Monkey-patching
// - If using regex to modify the response, it would be tedious to maintain
// - If using `DOMParser`, the same HTML would be parsed twice
document.head.appendChild(document.createElement("style")).textContent = `
@media (min-width: 1012px) { /* Making more room for the additional info */
.ghp-release-asset .col-lg-9 {
width: 60%; /* Originally ~75% */
}
}
.nowrap { /* Preventing text wrapping */
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
.ghp-release-asset { /* Styling the histogram */
background: linear-gradient(to right, var(--bgColor-accent-muted) var(--percent, 0%), transparent 0);
}
`;
// Tracking prevention
function preventTracking() {
log("Calling preventTracking");
// Prevents tracking data from being sent to `https://collector.github.com/github/collect`
// https://github.githubassets.com/assets/ui/packages/hydro-analytics/hydro-analytics.ts
$("meta[name=visitor-payload]")?.remove(); // const visitorMeta = document.querySelector<HTMLMetaElement>('meta[name=visitor-payload]')
// https://github.githubassets.com/assets/node_modules/@github/hydro-analytics-client/dist/meta-helpers.js
// Breakpoint on function `getOptionsFromMeta` to see the argument `prefix`, which is `octolytics`
// Or investigate `hydro-analytics.ts` mentioned above, you may find: `const options = getOptionsFromMeta('octolytics')`
// Later, this script gathers information from `meta[name^="${prefix}-"]` elements, so we can remove them.
$$("meta[name^=octolytics-]").forEach(meta => meta.remove());
// If `collectorUrl` is not set, the script will throw an error, thus preventing tracking.
// Prevents tracking data from being sent to `https://api.github.com/_private/browser/stats`
// From "Network" tab, we can find that this request is sent by `https://github.githubassets.com/assets/ui/packages/stats/stats.ts` at function `safeSend`, who accepts two arguments: `url` and `data`
// Search for this function in the current script, and you will find that it is only called once by function `flushStats`
// `url` parameter is set in this function, by: `const url = ssrSafeDocument?.head?.querySelector<HTMLMetaElement>('meta[name="browser-stats-url"]')?.content`
// So, we can remove this meta tag to prevent tracking.
$("meta[name=browser-stats-url]")?.remove();
// After removing the meta tag, the script will return
}
if (config.get("trackingPrevention")) {
// document.addEventListener("DOMContentLoaded", preventTracking);
// All we need to remove is in the `head` element, so we can run it immediately.
preventTracking();
}
log("GitHub Plus has been loaded.");
})();
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