import pkg from 'node-csv';
import logger from '#root/utils/logger.js';
import path from 'path';
const __dirname = path.dirname(new URL(import.meta.url).pathname);

const { createParser } = pkg
let recipeData;
let loaded = false;

function parser() {
  const csv = createParser();
  return new Promise((r, j) => {
    csv.parseFile(path.join(__dirname, './recipe.csv'), function (err, data) {
      if (err) {
        logger.err(err);
        return j();
      }
      logger('食谱加载成功');
      recipeData = data;
      loaded = true;
      r(recipeData);
    });
  });
}

export default async function getDb() {
  if (loaded) {
    return recipeData;
  } else {
    await parser()
    return recipeData;
  }
}