feat: add check for latest version

Merge pull request #106 from RubenVerg/master

package.json

@@ -1,6 +1,6 @@
 {
   "name": "musescore-downloader",
-  "version": "0.23.4",
+  "version": "0.23.5",
   "description": "download sheet music from musescore.com for free, no login or Musescore Pro required | 免登录、免 Musescore Pro，免费下载 musescore.com 上的曲谱",
   "main": "dist/main.js",
   "bin": "dist/cli.js",

src/cli.ts

@@ -10,6 +10,7 @@ import { loadMscore, INDV_DOWNLOADS, WebMscore } from './mscore'
 import { ScoreInfo, ScoreInfoHtml, ScoreInfoObj, getActualId } from './scoreinfo'
 import { getLibreScoreLink } from './librescore-link'
 import { escapeFilename } from './utils'
+import { isNpx, isLatest, installedVersion, latestVersion } from './npm-data'
 import i18n from './i18n'
 
 const inquirer: typeof import('inquirer') = require('inquirer')
@@ -184,4 +185,12 @@ void (async () => {
     }),
   )
   spinner.succeed('OK')
+
+  if (!(await isNpx())) {
+    const installed = await installedVersion()
+    const latest = await latestVersion()
+    if (!isLatest(installed, latest)) {
+      console.log(chalk.yellowBright(`Your installed version (${installed}) of the musescore-downloader CLI is not the latest one (${latest})!\nRun npm i -g musescore-downloader to update.`))
+    }
+  }
 })()

src/npm-data.ts

@@ -0,0 +1,21 @@
+import { exec as _exec } from 'child_process'
+import { promisify } from 'util'
+
+const exec = promisify(_exec)
+
+export async function isNpx() {
+  const output = await exec('npm list -g musescore-downloader')
+  return output.stdout.includes('(empty)')
+}
+
+export async function installedVersion() {
+  return require('../package.json').version
+}
+
+export async function latestVersion() {
+  return (await exec('npm info musescore-downloader version')).stdout.trim()
+}
+
+export async function isLatest() {
+  return await installedVersion() === await latestVersion()
+}