<?php

class Qs_Form_Decorator_Captcha_Word extends Zend_Form_Decorator_Captcha_Word
{
    private $_hint = '<span class="asterisk">*</span>Enter code above';
    protected $_additionalHtml = array(
        'BeforeElement' => '',
        'AfterElement'  => '',
        'BeforeInput'   => ''
    );

    public function __call($method, $args)
    {
        if ('getAdditionalHtml' == substr($method, 0, 17)) {
            $section = substr($method, 17);

            return $this->_getAdditionalHtml($section);
        } elseif ('setAdditionalHtml' == substr($method, 0, 17)) {
            $section = substr($method, 17);

            return $this->_setAdditionalHtml($section, $args[0]);
        }
        throw new Zend_Form_Decorator_Exception(sprintf('Method %s does not exist', $method));
    }

    function setAdditionalHtml($options = array())
    {
        foreach ($options as $section => $html) {
            $this->_setAdditionalHtml($section, $html);
        }
        return $this;
    }

    protected function _setAdditionalHtml($section, $html)
    {
        if (!isset($this->_additionalHtml[$section])) {
            throw new Zend_Form_Decorator_Exception('Invalid section for decorator additional HTML');
        }
        $this->_additionalHtml[$section] = $html;
        return $this;
    }

    protected function _getAdditionalHtml($section = null)
    {
        if (empty($section)) {
            return $this->_additionalHtml;
        }
        if (isset($this->_additionalHtml[$section])) {
            return $this->_additionalHtml[$section];
        }
        return '';
    }

    public function initRender()
    {
        $id = $this->getElement()->getId() . '-input';
        $params = array(
            'useWrapper' => true,
            'elements' => array(
                array('selector' => '#' . $id, 'hint' => $this->_hint)
            )
        );

        /** @var $doc Qs_Doc */
        $doc = Zend_Registry::get('doc');
        $doc->addScript('js/jquery.defaultHint.js');
        $doc->addInitFunction('$().defaultHint', array($params));

        return $this;
    }

    /**
     * Render captcha
     *
     * @param  string $content
     * @return string
     */
    public function render($content)
    {
        /** @var Zend_Form_Element $element */
        $element = $this->getElement();

        /** @var Qs_View $view */
        $view    = $element->getView();

        if (null === $view) {
            return $content;
        }

        $name = $element->getFullyQualifiedName();

        $hiddenName = $name . '[id]';
        $textName = $name . '[input]';

        $placement = $this->getPlacement();
        $separator = $this->getSeparator();

        $attribs = $element->getAttribs();
        $attribs = Qs_Array::excludeKey($attribs, 'helper', 'captchaOptions');

        $attribs['id'] = $element->getId() . '-input';
        $text   = $view->formText($textName, '', $attribs);

        $attribs['id'] = $element->getId() . '-hidden';
        $hidden = $view->formHidden($hiddenName, $element->getValue(), $attribs);

        switch ($placement) {
            case 'PREPEND':
                $content = $this->getAdditionalHtmlBeforeElement()
                         . $hidden . $separator . $this->getAdditionalHtmlBeforeInput()
                         . $text . $separator
                         . $this->getAdditionalHtmlAfterElement() . $content;
                break;
            case 'APPEND':
            default:
                $content = $content . $this->getAdditionalHtmlBeforeElement()
                         . $hidden . $separator . $this->getAdditionalHtmlBeforeInput()
                         . $text . $separator
                         . $this->getAdditionalHtmlAfterElement();
        }
        return $content;
    }
}