import { createParser } from 'node-csv';
import logger from '#root/utils/logger.js';

let recipeData;
let loaded = false;

function parser() {
  csv = createParser();
  return new Promise((r, j) => {
    csv.parserFile('./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 {
    return await parser();
  }
}