Tukukkk

What would be the best approach to write this class.

This class validates 3 types of passwords,

1. Normal


2. Medium


3. Strong

Github Link

<?php namespace aziRules;





use aziArguments;

use aziRulesContractsRuleInterface;



/**

 * Class Password

 *

 * @package aziRules

 */

class Password implements RuleInterface

{

    const NORMAL = 'normal';

    const MEDIUM = 'medium';

    const STRONG = 'strong';



    protected $message = null;



    /**

     * @param $field

     * @param $password

     * @param Arguments $args

     * @return mixed

     */

    public function validate($field, $password, Arguments $args)

    {

        $type = $args->getVariables();



        if ($type && $type != self::NORMAL) {

            return $this->is($type[ 0 ], $password);

        }



        return $this->isNormal($password);

    }



    /**

     * @param $strength

     * @param $password

     * @return bool

     */

    public function is($strength, $password)

    {

        $method = sprintf("is%s", ucwords($strength));

        return call_user_func([$this, $method], $password);

    }



    /**

     * @param $password

     * @return bool

     */

    public function isNormal($password)

    {

        if (strlen($password) < 8) {

            $this->message = '{field} must be at least 8 characters long';

            return false;

        }



        if (!preg_match("#[a-zA-Z]#", $password)) {

            $this->message = '{field} must contain at least one letter';

            return false;

        }





        return true;

    }



    /**

     * Checks a strong password

     *

     * @param $password

     * @return bool

     */

    public function isStrong($password)

    {

        if (!$this->isMedium($password)) {

            return false;

        }



        if (!preg_match("#[!@#$%^&*()_+-=[]{};':"\|,.<>/?]+#", $password)) {

            $this->message = '{field} must contain at least special character';

            return false;

        }



        return true;

    }



    /**

     * @param $password

     * @return bool

     */

    public function isMedium($password)

    {

        if (!$this->isNormal($password)) {

            return false;

        }



        if (!preg_match("#[a-z]#", $password)) {

            $this->message = '{field} must contain at least one lowercase letter';

            return false;

        }



        if (!preg_match("#[A-Z]#", $password)) {

            $this->message = '{field} must contain at least one uppercase letter';

            return false;

        }



        return true;

    }



    /**

     * @return mixed

     */

    public function message()

    {

        if ($this->message) {

            return $this->message;

        }



        return "{field} must be a good password";

    }

}