<?php

class RscDtgs_Form_Rule_Regex implements RscDtgs_Form_Rule_Interface
{
  /**
   * @var string
   */
  public $label;

  /**
   * @var string
   */
  public $parameters;

  /**
   * @var string
   */
  public $message;

  /**
   * Constructor
   * @param string $label Field label
   * @param string $parameters Rule parameters
   * @throws InvalidArgumentException
   */
  function __construct($label, $parameters = null)
  {
    $this->label = $label;

    if (!is_string($parameters)) {
      throw new InvalidArgumentException(sprintf('Parameter of form rule Regex must be a string, %s given', gettype($parameters)));
    }

    $this->parameters = $parameters;
  }

  /**
   * Validate specified field
   * @param mixed $field Field data
   * @return bool
   */
  function validate($field)
  {
    return preg_match($this->parameters, $field);
  }

  /**
   * Returns rule error message
   * @return string
   */
  function getMessage()
  {
    if ($this->message !== null) {
      return sprintf($this->message, $this->label);
    }

    return sprintf(__('The %s field does not match with regex', 'rsc-framework'), $this->label);
  }

  /**
   * Sets the error message
   * @param string $message Error message
   * @return RscDtgs_Form_Rule_Regex
   */
  public function setMessage($message)
  {
    $this->message = $message;

    return $this;
  }

  /**
   * Creates the new instance
   * @param string $label Field label
   * @param string $parameters Rule parameters
   * @return RscDtgs_Form_Rule_Regex
   */
  public static function create($label, $parameters)
  {
    return new self($label, $parameters);
  }
}
