'use strict';

const camelToSnake = (s) => s.replace(/[A-Z]/g, (c) => '_' + c.toLowerCase());

exports.stringify = ({ command = '', flags = {}, reason = '' }) => {
	const flagS = Object.entries(flags)
		.flatMap(([key, value]) => {
			switch (value) {
				case null:
				case false:
				case undefined: // eslint-disable-line no-undefined
					return [];
				case true:
					return ['-' + camelToSnake(key)];
				default:
					return [`-${camelToSnake(key)}=${value}`];
			}
		})
		.join(' ');
	return ['/' + command, flagS, reason].filter(Boolean).join(' ');
};