import { fs } from 'vuepress/utils';
import { logger } from './utils/index.js';
export const generateRobotsTxt = async (app) => {
    const { succeed, fail } = logger.load('Generating robots.txt');
    const publicPath = app.dir.public('robots.txt');
    let content = fs.existsSync(publicPath)
        ? await fs.readFile(publicPath, { encoding: 'utf8' })
        : '';
    if (content && !content.includes('User-agent')) {
        fail('robots.txt seems invalid!');
    }
    else {
        content += '\nUser-agent:*\nDisallow:\n';
        await fs.writeFile(app.dir.dest('robots.txt'), content, {
            flag: 'w',
        });
        succeed();
    }
};