import { fileURLToPath } from 'url';
import fs from 'fs';
import path, { dirname } from 'path';
import nhp from 'node-html-parser';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

export const getFilenames = async (directory, files = []) => {
  const dirs = fs.opendirSync(directory);
  for await (const dirent of dirs) {
    const dirOrFilePath = path.join(directory, dirent.name);
    if (dirent.isDirectory()) {
      files = await getFilenames(dirOrFilePath, files)
    } else if (dirent.isFile()) {
      files = [...files, ...[dirOrFilePath]]
    }
  }

  return files
}

export const extensionFilter = (filenames, extension) => {
  return filenames.filter(filename => filename.match(new RegExp(`.*\.(${extension})`, 'ig')));
}

export const getContent = (filename) => {
  return fs.readFileSync(filename).toString()
}

export const getTitle = (html) => {
  return nhp.parse(html).querySelector('title').toString();
}