<?php

class RegisterValidator
{
    private $login = '';
    private $email = '';
    private $password = '';
    private $birthday = '';
    private $sex = 0;

    public function setLogin($login)
    {
        $login = preg_replace('!\s+!', ' ', $login); // remove inner spaces
        $login = trim($login); // remove outer spaces
        if (
            $this->loginIsAllowed($login) &&
            !$this->loginIsMixed($login) &&
            mb_strlen($login < 2) &&
            mb_strlen($login) > 16 &&
            !strpos("!@#$%^&*()\+|/'\"", $login)
        ) {
            $this->login = $login;
        }
        return $this;
    }

    private function loginIsAllowed($login)
    {
        $disallowed = [
            'Мироздатель',
            'Мусорщик',
            'Комментатор',
        ];
        $d = implode('|', $disallowed);
        $pattern = "/\b($d)\b/iu";
        return !preg_match($pattern, $login);
    }

    private function loginIsMixed($login)
    {
        $en = preg_match("/^(([0-9A-z -])+)$/iu", $login);
        $ru = preg_match("/^([а-яёіїє\s\d]*)$/iu", $login);
        return ($ru && $en) || (!$ru && !$en);
    }

    public function setEmail($email)
    {
        if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $this->email = $email;
        }
        return $this;
    }

    public function setPassword($password, $passwordVerify)
    {
        if ($this->password === $passwordVerify && mb_strlen($password) > 3) {
            $this->password = md5($password);
        }
        return $this;
    }

    public function setBirthday($birthday)
    {
        $bdate = DateTime::createFromFormat('Y-m-d', $birthday);
        if ($bdate) {
            $this->birthday = $bdate->format('d.m.Y');
        }
        return $this;
    }

    public function setSex($sex)
    {
        if ((int)$sex > 0) {
            $this->sex = $sex;
        }
        return $this;
    }

    public function get()
    {
        return [
            'login' => $this->login,
            'email' => $this->email,
            'password' => $this->password,
            'birthday' => $this->birthday,
            'sex' => $this->sex,
        ];
    }
}