core: install: save metadata

packages/hydrooj/bin/commands.ts

@@ -127,11 +127,16 @@ if (!argv.args[0] || argv.args[0] === 'cli') {
         console.log('Current Addons: ', addons);
         fs.writeFileSync(addonPath, JSON.stringify(addons, null, 2));
     });
-    cli.command('install [package]').action(async (src) => {
+    cli.command('install [package]').action(async (_src) => {
+        if (!_src) {
+            cli.outputHelp();
+            return;
+        }
         if (yarnVersion !== 1) throw new Error('Yarn 1 is required.');
         const addonDir = path.join(hydroPath, 'addons');
         let newAddonPath: string = '';
         fs.ensureDirSync(addonDir);
+        let src = _src;
         if (!src.startsWith('http')) {
             try {
                 src = child.execSync(`yarn info ${src} dist.tarball`, { cwd: os.tmpdir() })
@@ -164,8 +169,15 @@ if (!argv.args[0] || argv.args[0] === 'cli') {
         console.log('Installing depedencies');
         child.execSync('yarn --production', { stdio: 'inherit', cwd: newAddonPath });
         child.execSync(`hydrooj addon add '${newAddonPath}'`);
+        fs.writeFileSync(path.join(newAddonPath, '__metadata__'), JSON.stringify({
+            src: _src,
+            lastUpdate: Date.now(),
+        }));
     });
     cli.help();
     cli.parse();
-    if (!cli.matchedCommand) console.log('Unknown command.');
+    if (!cli.matchedCommand) {
+        console.log('Unknown command.');
+        cli.outputHelp();
+    }
 }