/*
 * User utilities
 */

const bcrypt = require(`bcryptjs`);
const jwt = require(`jsonwebtoken`);

const getToken = (user) => {
	return jwt.sign(
		convertToPublicFormat(user),
		process.env.tokenSecret,
		{
			expiresIn: 604800, // 1 week
		}
	);
};

const convertToPublicFormat = (user = {}) => {
	user.email = user.email || user.hk || null;
	user.id = user.id || user.sk2 || null;
	if (user.hk) {
		delete user.hk;
	}
	if (user.sk) {
		delete user.sk;
	}
	if (user.sk2) {
		delete user.sk2;
	}
	if (user.password) {
		delete user.password;
	}
	return user;
};

/**
 * Hash password
 * @param {string} password Password to hash
 */
const hashPassword = (password) => {
	const salt = bcrypt.genSaltSync(10);
	return bcrypt.hashSync(password, salt);
};

/**
 * Compare password
 * @param {string} candidatePassword Hashed password supplied by user
 * @param {string} trustedPassword Hashed password on record for user
 */
const comparePassword = (candidatePassword, trustedPassword) => {
	return bcrypt.compareSync(candidatePassword, trustedPassword);
};

module.exports = {
	getToken,
	convertToPublicFormat,
	hashPassword,
	comparePassword,
}