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const fs = require('fs');
const path = require('path');

// Parse command line arguments
const args = process.argv.slice(2);
let customEnginePath = null;

// Parse --path argument
for (let i = 0; i < args.length; i++) {
    if (args[i] === '--path' && i + 1 < args.length) {
        customEnginePath = args[i + 1];
        break;
    }
}

// Get current working directory absolute path
const currentDir = process.cwd();

if (!customEnginePath) {
  console.error('❌ Custom engine path required!');
}

// Build engine path - use custom path if provided, otherwise use default
const enginePath = path.resolve(customEnginePath);

// settings.json file path
const settingsPath = path.join(currentDir, 'local', 'settings.json');

try {
    // Ensure local directory exists
    const localDir = path.dirname(settingsPath);
    if (!fs.existsSync(localDir)) {
        fs.mkdirSync(localDir, { recursive: true });
        console.log('📁 Created local directory');
    }
    
    // Create complete settings configuration object
    const settings = {
        "use-global-engine-setting": false,
        "use-default-js-engine": false,
        "js-engine-path": enginePath,
        "use-default-cpp-engine": true,
        "cpp-engine-path": ""
    };
    
    // Write configuration to file with beautiful formatting
    const settingsContent = JSON.stringify(settings, null, 2);
    fs.writeFileSync(settingsPath, settingsContent, 'utf8');
    
    console.log('✅ Successfully generated/updated local/settings.json');
    console.log(`📁 js-engine-path set to: ${enginePath}`);

    console.log('🎯 Using custom engine path specified via --path argument');
    
    // Show whether file was newly created
    if (!fs.existsSync(settingsPath)) {
        console.log('🆕 Created new settings.json file');
    } else {
        console.log('🔄 Updated existing settings.json file');
    }
    
} catch (error) {
    console.error('❌ Operation failed:', error.message);
    console.log('💡 Please check file permissions or disk space');
} 

node customEnginePath.js --path=<Your Custom Engine Path>