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• 137
• 7

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 azi\Rules;
use azi\Arguments;
use azi\Rules\Contracts\RuleInterface;
/**
 * Class Password
 *
 * @package azi\Rules
 */
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";
 }
}