140 lines
3.2 KiB
TypeScript
140 lines
3.2 KiB
TypeScript
import got, {Response} from "got";
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import colors from "chalk";
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import log from "../log";
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import pkg from "../../package.json";
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import ClientManager from "../clientManager";
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const TIME_TO_LIVE = 15 * 60 * 1000; // 15 minutes, in milliseconds
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export default {
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isUpdateAvailable: false,
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fetch,
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checkForUpdates,
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};
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export type ChangelogData = {
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current: {
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prerelease: boolean;
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version: string;
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changelog?: string;
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url: string;
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};
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expiresAt: number;
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latest?: {
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prerelease: boolean;
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version: string;
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url: string;
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};
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packages?: boolean;
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};
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const versions = {
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current: {
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version: `v${pkg.version}`,
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changelog: undefined,
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},
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expiresAt: -1,
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latest: undefined,
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packages: undefined,
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} as ChangelogData;
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async function fetch() {
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const time = Date.now();
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// Serving information from cache
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if (versions.expiresAt > time) {
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return versions;
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}
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try {
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const response = await got("https://api.github.com/repos/thelounge/thelounge/releases", {
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headers: {
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Accept: "application/vnd.github.v3.html", // Request rendered markdown
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"User-Agent": pkg.name + "; +" + pkg.repository.url, // Identify the client
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},
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});
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if (response.statusCode !== 200) {
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return versions;
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}
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updateVersions(response);
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// Add expiration date to the data to send to the client for later refresh
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versions.expiresAt = time + TIME_TO_LIVE;
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} catch (error) {
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// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
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log.error(`Failed to fetch changelog: ${error}`);
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}
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return versions;
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}
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function updateVersions(response: Response<string>) {
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let i: number;
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let release: {tag_name: string; body_html: any; prerelease: boolean; html_url: any};
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let prerelease = false;
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const body = JSON.parse(response.body);
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// Find the current release among releases on GitHub
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for (i = 0; i < body.length; i++) {
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release = body[i];
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if (release.tag_name === versions.current.version) {
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versions.current.changelog = release.body_html;
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prerelease = release.prerelease;
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break;
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}
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}
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// Find the latest release made after the current one if there is one
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if (i > 0) {
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for (let j = 0; j < i; j++) {
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release = body[j];
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// Find latest release or pre-release if current version is also a pre-release
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if (!release.prerelease || release.prerelease === prerelease) {
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module.exports.isUpdateAvailable = true;
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versions.latest = {
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prerelease: release.prerelease,
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version: release.tag_name,
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url: release.html_url,
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};
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break;
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}
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}
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}
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}
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function checkForUpdates(manager: ClientManager) {
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fetch()
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.then((versionData) => {
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if (!module.exports.isUpdateAvailable) {
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// Check for updates every 24 hours + random jitter of <3 hours
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setTimeout(
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() => checkForUpdates(manager),
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24 * 3600 * 1000 + Math.floor(Math.random() * 10000000)
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);
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}
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if (!versionData.latest) {
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return;
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}
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log.info(
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`The Lounge ${colors.green(
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versionData.latest.version
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)} is available. Read more on GitHub: ${versionData.latest.url}`
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);
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// Notify all connected clients about the new version
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manager.clients.forEach((client) => client.emit("changelog:newversion"));
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})
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.catch((error: Error) => {
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log.error(`Failed to check for updates: ${error.message}`);
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});
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}
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