const crypto = require('crypto');
const uuid = require('uuid/v4');

const hash = Symbol();
const sha256 = text => crypto.createHash('sha256').update(text).digest('base64');

class User {
	constructor(login = '', password = '') {
		this._id = uuid();
		this.login = login;
		this[hash] = sha256(password);
	}

	static fromDB(dbUser) {
		let user = new User();
		user._id = dbUser._id;
		user.login = dbUser.login;
		user[hash] = dbUser.hash;

		return user;
	}

	toDB() {
		let user = new User();
		user._id = this._id;
		user.login = this.login;
		user.hash = this[hash];
		return user;
	}

	checkPassword(password) {
		return this[hash] == sha256(password);
	}
}

module.exports = User;