server.js

#!/usr/bin/env node
const { Command } = require('commander');
const { saveConfig, loadConfig } = require('./lib/config'); 
const { setupRuntime, getRuntimePath, getExecutable } = require('./lib/downloader.js');
const { runFile } = require("./lib/runtimeHandler.js");  

const program = new Command(); 

program
    .name('adjust')
    .description('A lightweight CLI to manage and execute isolated language runtimes.')
    .version('1.0.0');

program
    .command('install <language>')
    .description('Download and configure an isolated runtime (e.g., node, python)')
    .action(async (language) => { 
        if(!['python', 'node'].includes(language)){
            console.error(`\n ✖ Unsupported language: ${language}`);
            console.log(`   Supported runtimes: node, python\n`); 
            process.exit(1);
        } 

        console.log(`\n ➜ Initializing isolated setup for ${language}...`);
        try { 
            await setupRuntime(language);
            getExecutable(language);  

            const config = await loadConfig();
            config.activeLanguage = language;  
            config.environment[language] = {
                path: getRuntimePath(language),
                installed_at: new Date().toISOString()
            } 

            await saveConfig(config); 
            console.log(`\n ✓ ${language} runtime installed and configured successfully.`);
            console.log(` ➜ Active runtime set to: ${language}`);
            console.log(`\n Run a file using: adjust run <filename>\n`);
        }
        catch (err) {
            console.error(`\n ✖ Failed to setup ${language}:`, err.message, `\n`);
            process.exit(1);
        }
    });

program 
    .command('list')
    .description('List available and active runtimes')
    .action(async () => {
        const config = await loadConfig(); 
        console.log(`\n Active Runtime : ${config.activeLanguage || 'None'}`);
        console.log(` Installed Environments:`);
        
        if (Object.keys(config.environment).length === 0) {
            console.log(`   (none)`);
        } else {
            for (const [lang, data] of Object.entries(config.environment)) {
                console.log(`   • ${lang}  (installed at: ${data.installed_at})`);
            }
        }
        console.log('');
    }); 

program
    .command('run <file>')
    .description('Execute a file using its isolated runtime environment')
    .action(async (file) => {
        await runFile(file); 
    });
    
program.parse();