'use strict';

const fs = require('fs').promises;
const crypto = require('crypto');

const countries = require('./countries.json');

async function init() {
	const countryImgs = await fs.readdir('./assets/countries');
	const countriesByCode = Object.fromEntries(countries.map((country) => [country.alpha2, country]));

	const imgCountries = await Promise.all(countryImgs.filter((file) => !['encoded', 'disabled'].includes(file)).map(async (file) => {
		const code = file.match(/(\w+).png/)[1];
		const filename = `${crypto.createHash('md5').update(code).digest('hex').slice(0, 4)}.png`;

		await fs.copyFile(`./assets/countries/${file}`, `./assets/countries/encoded/${filename}`);

		return {
			file: filename,
			code,
			...countriesByCode[code],
		};
	}));

	await fs.writeFile('./assets/countries-curated.json', JSON.stringify(imgCountries, null, 4));

	console.log('Done!');
}

init();