Refactor: Move installSystemPackage function to a separate module for better organization

src/cli.ts

@@ -1,13 +1,13 @@
 import * as path from 'path';
 import * as fs from 'fs';
 import * as os from 'os';
-import { spawnSync } from 'child_process';
 import { Command } from 'commander';
 import { getPlatformInfo } from './core/platform';
 import { getMatchingAsset } from './core/matcher';
 import { findBinary } from './core/finder';
 import { fetchLatestRelease, fetchLatestReleaseRaw, downloadAsset } from './core/downloader';
 import { extractAsset } from './core/extractor';
+import { installSystemPackage } from './core/installer';
 
 interface CliOptions {
   appName?: string;
@@ -58,31 +58,6 @@ function getInstallDir(installPath?: string): string {
   return '/usr/local/bin';
 }
 
-function installSystemPackage(downloadPath: string): void {
-  const fileName = path.basename(downloadPath).toLowerCase();
-
-  const command: { binary: string; args: string[] } | undefined = fileName.endsWith('.deb')
-    ? { binary: 'dpkg', args: ['-i', downloadPath] }
-    : fileName.endsWith('.pkg')
-      ? { binary: 'installer', args: ['-pkg', downloadPath, '-target', '/'] }
-      : fileName.endsWith('.rpm')
-        ? { binary: 'rpm', args: ['-i', downloadPath] }
-        : undefined;
-
-  if (!command) {
-    throw new Error(`Unsupported package type: ${fileName}`);
-  }
-
-  const isRoot = process.getuid && process.getuid() === 0;
-  const commandToRun = isRoot ? command.binary : 'sudo';
-  const argsToRun = isRoot ? command.args : [command.binary, ...command.args];
-
-  const result = spawnSync(commandToRun, argsToRun, { stdio: 'inherit' });
-  if (result.status !== 0) {
-    throw new Error(`Failed to install package using ${commandToRun} ${argsToRun.join(' ')}.`);
-  }
-}
-
 async function run() {
   let tempDir: string | undefined;
   const program = new Command();