import fs from 'node:fs';
import path from 'node:path';
import { execFileSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const rootDir = path.resolve(__dirname, '..');
const configPath = path.join(rootDir, 'sea-config.json');

if (!fs.existsSync(configPath)) {
    console.error(`Error: Configuration file not found at ${configPath}`);
    process.exit(1);
}

const config = JSON.parse(fs.readFileSync(configPath, 'utf8'));
const outputPath = path.resolve(rootDir, config.output || 'dist/dashback');
const outputDir = path.dirname(outputPath);

// Ensure the target output directory exists
if (!fs.existsSync(outputDir)) {
    fs.mkdirSync(outputDir, { recursive: true });
}

console.log('Building Node.js Single Executable Application (SEA)...');
console.log(`Node version: ${process.version}`);
console.log(`Config: ${path.relative(rootDir, configPath)}`);
console.log(`Target: ${path.relative(rootDir, outputPath)}`);

try {
    execFileSync(process.execPath, ['--build-sea', configPath], {
        cwd: rootDir,
        stdio: 'inherit',
    });

    // Ensure executable permissions on POSIX systems
    if (process.platform !== 'win32' && fs.existsSync(outputPath)) {
        fs.chmodSync(outputPath, 0o755);
    }

    console.log(`\nSuccessfully built SEA executable: ${path.relative(rootDir, outputPath)}`);
} catch (err) {
    console.error('\nFailed to build SEA:', err.message);
    process.exit(1);
}