<?php

/**
 * @method \Qs_Form_Element_MultiText getElement()
 */
class Qs_Form_Decorator_MultiText extends Zend_Form_Decorator_HtmlTag
{
    protected $_placement = 'APPEND';
    protected $_options;

    /**
     * Markers:
     * - data-multitext-do="add"
     * - data-multitext-do="delete"
     * - data-multitext-do="up"
     * - data-multitext-do="down"
     * - data-multitext-row
     * - data-multitext-index
     *
     * @var array
     */
    protected $_buttonOptions = [];
    protected $_buttonDefaults
        = [
            'add'    => [
                'tag'     => 'button',
                'text'    => 'Add',
                'attribs' => [
                    'type'              => 'button',
                    'data-multitext-do' => 'add',
                ],
            ],
            'delete' => [
                'tag'     => 'button',
                'text'    => 'Delete',
                'attribs' => [
                    'type'              => 'button',
                    'data-multitext-do' => 'delete',
                    'data-confirm-msg'  => 'Do you really want to delete this row?',
                    'class'             => 'del btn btn-danger btn-small',
                ],
            ],
            'up'     => [
                'tag'     => 'button',
                'text'    => '',
                'attribs' => [
                    'type'              => 'button',
                    'data-multitext-do' => 'up',
                    'class'             => 'btn btn-default btn-small fa fa-long-arrow-up',
                ],
            ],
            'down'   => [
                'tag'     => 'button',
                'text'    => '',
                'attribs' => [
                    'type'              => 'button',
                    'data-multitext-do' => 'down',
                    'class'             => 'btn btn-default btn-small fa fa-long-arrow-down',
                ],
            ],
        ];

    public function setButton(array $options)
    {
        if (empty($this->_buttonOptions)) {
            $this->_buttonOptions = $this->_buttonDefaults;
        }
        $this->_buttonOptions = Qs_Array::mergeRecursive($this->_buttonOptions, $options);
        vdie($options, $this->_buttonOptions);
        return $this;
    }

    public function getButton($name)
    {
        if (empty($this->_buttonOptions)) {
            $this->_buttonOptions = ($options = $this->getOption('button'))
                ? Qs_Array::mergeRecursive($this->_buttonDefaults, $options)
                : $this->_buttonDefaults;
        }

        if (!array_key_exists($name, $this->_buttonOptions)) {
            throw new Exception('Unknown button "' . $name . '"');
        }

        return $this->_buttonOptions[$name];
    }

    protected function _initOptions()
    {
        $this->_options = Qs_Array::exclude($this->getElement()->getAttribs(), 'helper', 'options');
    }

    public function getOptions()
    {
        if (null === $this->_options) {
            $this->_initOptions();
        }
        return $this->_options;
    }

    public function getOption($key)
    {
        if (null === $this->_options) {
            $this->_initOptions();
        }
        return parent::getOption($key);
    }

    public function setOptions(array $options)
    {
        if (isset($options['options'])) {
            unset($options['options']);
        }
        foreach ($options as $key => $value) {
            $method = 'set' . ucfirst($key);
            if (method_exists($this, $method)) {
                $this->$method($value);
            } else {
                $this->_options[$key] = $value;
            }
        }
        return $this;
    }

    public function initRender()
    {
        /** @var Qs_Doc $doc */
        $doc = Zend_Registry::get('doc');
        $doc->addScript('js/lib/form-element-multitext.js')
            ->addInitObject(
                'qs.form.element.MultiText',
                [
                    [
                        'id'       => $this->getElement()->getId(),
                        'template' => $this->_renderRow('', [], ''),
                    ]
                ]
            );
        return $this;
    }

    public function render($content)
    {
        // init options
        $this->getOptions();

        $element = $this->getElement();
        $placement = $this->getPlacement();
        $noAttribs = $this->getOption('noAttribs');
        $this->removeOption('button');
        $this->removeOption('noAttribs');
        $this->removeOption('openOnly');
        $this->removeOption('closeOnly');

        $attribs = null;
        if (!$noAttribs) {
            $attribs = $this->getOptions();
        }
        if (!isset($attribs['id'])) {
            $attribs['id'] = $element->getId();
        }
        if (!isset($attribs['class'])) {
            $attribs['class'] = $element->getClass();
        }

        $html = $this->_getOpenTag('table', $attribs);
        $html .= $this->_renderBody();
        $html .= $this->_renderFooter();
        $html .= $this->_getCloseTag('table');

        switch ($placement) {
            case self::APPEND:
                $content = $content . $html;
                break;
            case self::PREPEND:
                $content = $html . $content;
                break;
        }

        return $content;
    }

    protected function _renderBody()
    {
        $element = $this->getElement();

        $html = $this->_getOpenTag('tbody');
        $index = 0;
        $values = (array)$element->getValue() ? : [''];
        foreach ($values as $value) {
            $html .= $this->_renderRow((string)$value, [], ++$index);
        }
        $html .= $this->_getCloseTag('tbody');

        return $html;
    }

    protected function _renderRow($value, array $attribs, $number)
    {
        $element = $this->getElement();
        $view = $element->getView();

        $html = $this->_getOpenTag('tr', ['data-multitext-row' => '']);

        if ($element->isNumering()) {
            $html .= $this->_getOpenTag('td', ['class' => 'no']);
            $html .= str_replace(
                '%number%',
                '<span data-multitext-index>' . $number . '</span>',
                $element->getNumeringFormat()
            );
            $html .= $this->_getCloseTag('td');
        }

        $html .= $this->_getOpenTag('td', ['class' => 'element']);
        $html .= $view->formText($element->getFullyQualifiedName(), $value, $attribs);
        $html .= $this->_getCloseTag('td');

        $html .= $this->_getOpenTag('td', ['class' => 'options']);
        $html .= $this->_renderOptionsCell();
        $html .= $this->_getCloseTag('td');

        $html .= $this->_getCloseTag('tr');

        return $html;
    }

    protected function _renderFooter()
    {
        $element = $this->getElement();

        $html = $this->_getOpenTag('tfoot');
        $html .= $this->_getOpenTag('tr');
        $html .= $this->_getOpenTag('td', ['colspan' => ($element->isNumering()) ? 3 : 2]);
        $html .= $this->_renderButton('add');
        $html .= $this->_getCloseTag('td');
        $html .= $this->_getCloseTag('tr');
        $html .= $this->_getCloseTag('tfoot');

        return $html;
    }

    protected function _getText($text)
    {
        if ($translator = $this->getElement()->getTranslator()) {
            return $translator->translate($text);
        }
        return $text;
    }

    protected function _renderOptionsCell()
    {
        $html = '';
        if ($this->getElement()->isSortable()) {
            $html .= $this->_renderButton('up') . ' ';
            $html .= $this->_renderButton('down') . ' ';
        }
        $html .= $this->_renderButton('delete');
        return $html;
    }

    protected function _renderButton($name)
    {
        $options = $this->getButton($name);
        $html = $this->_getOpenTag($options['tag'], $options['attribs']);
        $html .= empty($options['text']) ? '' : $this->_getText($options['text']);
        $html .= $this->_getCloseTag($options['tag']);

        return $html;
    }

}