#!/usr/bin/env tsx
import { promises as fs } from 'node:fs';

import { camelCase } from 'lodash';

export async function buildLocalRules() {
  const files = (await fs.readdir('./src/custom'))
    .filter(file => file.endsWith('.ts'))
    .filter(file => file !== 'index.ts')
    .map(file => file.slice(0, -3));

  const entryFile = /* js */ `
import type { ESLintUtils } from '@typescript-eslint/utils';
import type { Rule } from 'eslint';

${files.map(file => `import ${camelCase(file)} from './${file}';`).join('\n')}

export const rules: Record<
  string,
  Rule.RuleModule | ESLintUtils.RuleModule<string, unknown[]>
> = {
  ${files.map(file => `'${file}': ${camelCase(file)},`).join('\n  ')}
};
`.trim();

  await fs.writeFile('./src/custom/index.ts', entryFile + '\n');
}

if (require.main === module) {
  void buildLocalRules();
}