<?php
namespace app\components\validators;

use yii\validators\Validator;

class PasswordValidator extends Validator
{
    private $passwordRules = [
        '^.{8,}$' => '{attribute} must be at least 8 characters',
        '^.{8,255}$' => '{attribute} must be at most 255 characters',
        '[a-z]' => '{attribute} must contain at least 1 lowercase letter',
        '[A-Z]' => '{attribute} must contain at least 1 uppercase letter',
        '[0-9]' => '{attribute} must contain at least 1 number',
    ];

    public function validateAttribute($model, $attribute)
    {
        $password = $model->{$attribute};

        foreach ($this->passwordRules as $rule => $message) {
            if (!preg_match("/{$rule}/", $password)) {
                $this->addError($model, $attribute, $message);
            }
        }
    }
}