const { spawnSync } = require('child_process');
const fs = require('fs');
const path = require('path');

const rootDir = path.resolve(__dirname, '..');
const scanDirs = ['src', 'model', 'cubejs'].map((dir) => path.join(rootDir, dir));
const ignoredDirs = new Set(['node_modules', '.cubestore', 'dist', 'coverage']);

function collectJavaScriptFiles(dir, files = []) {
  if (!fs.existsSync(dir)) {
    return files;
  }

  for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
    if (entry.isDirectory()) {
      if (!ignoredDirs.has(entry.name)) {
        collectJavaScriptFiles(path.join(dir, entry.name), files);
      }
      continue;
    }

    if (entry.isFile() && /\.(c?m?js)$/.test(entry.name)) {
      files.push(path.join(dir, entry.name));
    }
  }

  return files;
}

const files = scanDirs.flatMap((dir) => collectJavaScriptFiles(dir)).sort();

if (!files.length) {
  console.log('No JavaScript files found for syntax check.');
  process.exit(0);
}

let failed = false;

for (const file of files) {
  const result = spawnSync(process.execPath, ['--check', file], {
    cwd: rootDir,
    encoding: 'utf8',
  });

  if (result.status !== 0) {
    failed = true;
    console.error(`\nSyntax check failed: ${path.relative(rootDir, file)}`);
    if (result.stderr) {
      console.error(result.stderr.trim());
    }
    if (result.stdout) {
      console.error(result.stdout.trim());
    }
  }
}

if (failed) {
  process.exit(1);
}

console.log(`Syntax check passed for ${files.length} JavaScript files.`);