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const CDN_ENDPOINT = "https://cdn.deno.land/";const SCAFFOLD_CLI_ENDPOINT = "https://deno.land/x/scaffold/scaffold.ts";import { VERSION } from "../constants.ts";import { colors, Command, Table } from "../deps/cli.ts";import { stringToUint8Array, wait } from "../utils.ts";
export interface VersionInfo {  latest: string;  versions: string[];  isLegacy: true;}
/** * Get the versions of a deno module from the https://deno.land registry. */export async function getDenoLandVersions(  module: string,): Promise<VersionInfo | undefined> {  const url = `${CDN_ENDPOINT}${module}/meta/versions.json`;  const res = await fetch(url, {    headers: { accept: "application/json" },  });
  if (res.status === 403 || res.status === 404) {    await res.body?.cancel();    return;  }
  if (res.status !== 200) {    throw Error(      `Got an error (${res.status}) while getting the version list:\n${await res        .text()}`,    );  }
  return res.json();}
/** * Upgrade a the scaffold cli to the latest version by running the global * installation command. */export function updateToLatest() {  return Deno.run({    cmd: [      "deno",      "install",      "--unstable",      "-Af",      "-n",      "scaffold",      SCAFFOLD_CLI_ENDPOINT,    ],    stdout: "piped",  }).output();}
export async function shouldUpgrade() {  const result = await getDenoLandVersions("scaffold");
  // avoid a semver check for now since there won't be any pre-releases.  if (!result || result.latest === VERSION) {    return { upgrade: false, version: VERSION };  }
  return { upgrade: true, version: result.latest };}
export const upgradeCommand = new Command().name("upgrade").action(async () => {  const spinner = wait({ text: "Checking for updates..." });  const result = await shouldUpgrade();
  if (!result.upgrade) {    spinner.warn(`You are already on the latest version. ${result.version}`);    Deno.exit(0);  }
  await updateToLatest();
  spinner.succeed(`Successfully upgraded to ${result.version}`);  Deno.exit(0);});
export async function showUpgrade() {  const result = await shouldUpgrade();
  if (!result.upgrade) {    return;  }
  Deno.stdout.write(stringToUint8Array("\n\n"));
  new Table().header([    `Update available! ${colors.red(VERSION)} → ${      colors.green(result.version)    }.`,  ]).body([[    `Run \`${colors.gray("scaffold upgrade")}\` to update.`,  ]]).border(true).padding(5).align("center").indent(2).render();}