<?php

namespace Qs\Form\SubForm\Table;

use Qs\Form\FixTrait;
use Qs\Form\SubForm\Table;
use Qs\Form\SubForm\TableOptionsTrait;
use Zend_View_Interface;

abstract class Row extends \Qs_Form_SubForm
{
    use FixTrait;
    use TableOptionsTrait;

    protected $_isDataCollectionItem = true;
    protected $_index = 0;
    protected $first = false;
    protected $last = false;

    public function getIndex()
    {
        return $this->_index;
    }

    public function setIndex($index)
    {
        $this->_index = $index;
        return $this;
    }

    public function isLast()
    {
        return $this->last;
    }

    public function setLast($last)
    {
        $this->last = $last;
        return $this;
    }

    public function isFirst()
    {
        return $this->first;
    }

    public function setFirst($first)
    {
        $this->first = $first;
        return $this;
    }
    
    protected function _initElements()
    {
        if ($this->isNumerable()) {
            $this->addRowNumber();
        }
        $this->bindElements();
        $this->addOptionsColumn();
        return parent::_initElements();
    }

    abstract protected function bindElements();

    public function isIsDataCollectionItem()
    {
        return $this->_isDataCollectionItem;
    }

    public function setIsDataCollectionItem($dataCollectionItem)
    {
        $this->_isDataCollectionItem = $dataCollectionItem;
        return $this;
    }

    public function hasOptionsColumn()
    {
        return $this->isSortable() || $this->isRemovable();
    }

    public function loadDefaultDecorators()
    {
        if ($this->loadDefaultDecoratorsIsDisabled()) {
            return $this;
        }
        $decorators = $this->getDecorators();

        if (empty($decorators)) {
            $this->addDecorator('FormElements');
            $self = $this;
            $attributes = [
                'tag' => 'tr',
                'id'  => ['callback' => function () use ($self) {
                    return $self->getId();
                }],
            ];
            if ($this->isIsDataCollectionItem()) {
                $attributes['data-collection-item'] = $this->getName();
            }
            $this->addDecorator(['tr' => 'HtmlTag'], $attributes);
        }
        return $this;
    }

    public function render(Zend_View_Interface $view = null)
    {
        if ($this->getOrientation() == Table::ORIENTATION_VERTICAL) {
            $elements = [];
            foreach ($this as $item) {
                $elements[] = $item->getName();
            }
            if ($this->hasOptionsColumn() && false !== ($index = array_search('options', $elements))) {
                unset($elements[$index]);
            }
            /** @var \Qs_Form_Decorator_FormElements $decorator */
            if (($decorator = $this->getDecorator('FormElements'))) {
                $decorator->setOption('wrappers', [
                    [
                        'elements'   => $elements,
                        'decorators' => [
                            ['HtmlTag', ['tag' => 'dl']],
                            ['HtmlTag', ['tag' => 'td', 'class' => 'c_elements']],
                        ],
                    ],
                ]);
            }
        }
        return parent::render($view);
    }

    public function addElement($element, $name = null, $options = null)
    {
        if ($this->getOrientation() == Table::ORIENTATION_VERTICAL) {
            return parent::addElement($element, $name, $options);
        }
        if (is_string($element)) {
            if (!is_array($options) || !array_key_exists('decorators', $options)) {
                $class = 'c_' . $name;
                if ($element == 'hidden') {
                    $class .= ' hidden';
                }
                switch ($element) {
                    case 'numeric':
                        $options['decorators'] = ['Numeric'];
                        break;
                    case 'date':
                        $options['decorators'] = ['JQuery_Datepicker'];
                        break;
                    default:
                        $options['decorators'] = ['ViewHelper'];
                        break;
                }
                if (0 === strcasecmp($element, 'HtmlEditor')) {
                    $options['decorators'][] = 'CkEditor';
                }
                $options['decorators'] = array_merge($options['decorators'], [
                    'Errors',
                    'Description',
                    [
                        'HtmlTag',
                        [
                            'tag'   => 'td',
                            'class' => $class,
                            'id'    => ['callback' => ['Zend_Form_Element', 'resolveElementId']],
                        ],
                    ],
                ]);
            }
        }
        return parent::addElement($element, $name, $options);
    }

    public function addRowNumber()
    {
        $this->addElement('static', 'rowNumber', ['label' => '#', 'value' => $this->getIndex() + 1]);
        if (($decorator = $this->getElement('rowNumber')->getDecorator('HtmlTag'))) {
            $decorator->setOption('data-row-number', '');
        }
        return $this;
    }

    public function addOptionsColumn()
    {
        $group = [];
        $classes = ['c_options'];
        if ($this->isSortable()) {
            $classes[] = 'c_sortable';
            $this->addElement(
                'button',
                'moveUp',
                [
                    'label'          => '',
                    'title'          => 'Move Up',
                    'data-action-up' => '',
                    'class'          => 'btn btn-small fa fa-long-arrow-up',
                    'decorators'     => ['ViewHelper'],
                ]
            );
            $this->addElement(
                'button',
                'moveDown',
                [
                    'label'            => '',
                    'title'            => 'Move Down',
                    'data-action-down' => '',
                    'class'            => 'btn btn-small fa fa-long-arrow-down',
                    'decorators'       => ['ViewHelper'],
                ]
            );
            $group[] = 'moveUp';
            $group[] = 'moveDown';
        }

        if ($this->isRemovable()) {
            $this->addElement(
                'button',
                'delete',
                [
                    'label'              => 'Delete',
                    'data-action-delete' => '',
                    'class'              => 'btn btn-small btn-danger btn-delete',
                    'decorators'         => ['ViewHelper'],
                ]
            );
            $group[] = 'delete';
        }
        if (empty($group)) {
            return $this;
        }
        $this->addDisplayGroup(
            $group,
            'options',
            [
                'legend'     => 'Options',
                'class'      => 'options',
                'decorators' => [
                    'FormElements',
                    [
                        'HtmlTag',
                        [
                            'tag'               => 'td',
                            'data-options-cell' => '',
                            'class'             => implode(' ', $classes),
                        ],
                    ],
                ],
            ]
        );
        return $this;
    }
}