import { execFileSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';
import { dirname, resolve } from 'node:path';

const root = resolve(dirname(fileURLToPath(import.meta.url)), '..');

function git(args) {
  return execFileSync('git', args, { cwd: root, encoding: 'utf8' }).trim();
}

function isIgnored(file) {
  try {
    execFileSync('git', ['check-ignore', '--no-index', '-q', file], {
      cwd: root,
      stdio: 'ignore',
    });
    return true;
  } catch (error) {
    if (error.status === 1) return false;
    throw error;
  }
}

function assert(condition, message) {
  if (!condition) throw new Error(message);
}

const trackedDatabases = git([
  'ls-files',
  '--',
  'dev.db',
  'dev.db-*',
  'prisma/*.db',
  'prisma/*.db-*',
])
  .split('\n')
  .filter(Boolean);

assert(
  trackedDatabases.length === 0,
  `Runtime SQLite files in supported locations must not be tracked; found: ${trackedDatabases.join(', ')}`,
);

for (const file of [
  'dev.db',
  'dev.db-wal',
  'dev.db-shm',
  'prisma/dev.db',
  'prisma/dev.db-wal',
  'prisma/dev.db-shm',
]) {
  assert(isIgnored(file), `Runtime SQLite file must be ignored: ${file}`);
}

assert(
  !isIgnored('test/fixtures/reference.db'),
  'Intentional fixture must remain versionable',
);

console.log('Backend repository hygiene verified');