<?php

/**
 * @property Qs_View $view
 */

use Qs\Html as Html;
use Qs_Form_Element_CheckboxTreeTable as CheckboxTreeTableElement;

class Qs_View_Helper_FormCheckboxTreeTable extends Zend_View_Helper_FormElement
{

    protected $info;
    protected $customOptions = ['columns', 'tableAttribs', 'toggleDialog'];
    protected $rowIndex = 0;

    protected function _getInfo($name, $value = null, $attribs = null, $options = null, $listsep = null)
    {
        $info = parent::_getInfo($name, $value, $attribs, $options, $listsep);
        foreach ($this->customOptions as $field) {
            if (array_key_exists($field, $info['attribs'])) {
                $info[$field] = $info['attribs'][$field];
                unset($info['attribs'][$field]);
            }
        }
        $info['tableAttribs']['id'] = $info['id'];
        if (empty($info['value'])) {
            $info['value'] = [];
        }
        return $info;
    }

    public function getInfo($field = null, $default = null)
    {
        return Qs_Array::get($this->info, $field, $default);
    }

    public function formCheckboxTreeTable($name, $value = null, $attribs = null, $options = null, $listsep = null)
    {
        $this->info = $this->_getInfo($name, $value, $attribs, $options, $listsep);
        /** @var Qs_Doc $doc */
        $doc = Zend_Registry::get('doc');
        $doc->addStylesheet('css/thirdpart/jquery.treetable.css');
        $doc->addStylesheet('css/thirdpart/jquery.treetable.theme.default.css');
        $doc->addScript('js/jquery.treetable.js');
        $doc->addScript('js/lib/form/element/checkboxTreeTable.js');
        $scriptOptions = [
            'id'             => $this->getInfo('id'),
            'mainColumnName' => $this->getMainColumnName(),
            'treetable'      => ['expandable' => true],
            'expandChecked'  => $this->getInfo('expandChecked', true),
            'toggleDialog'   => $this->getInfo('toggleDialog', []),
        ];
        $doc->addInitObject('lib.form.element.CheckboxTreeTable', [$scriptOptions]);

        return $this->renderLinks() . $this->renderTable();
    }

    protected function renderLinks()
    {
        $links = [
            'checkAll'    => 'Check All',
            'uncheckAll'  => 'Uncheck All',
            'expandAll'   => 'Expand All',
            'collapseAll' => 'Collapse All',
        ];
        $items = [];
        foreach ($links as $action => $title) {
            $items[] = Html::renderContainer(['li', 'a'], $title, [
                'data-tree-action' => $action,
                'href'             => '#',
                'onclick'          => 'return false',
            ]);
        }
        return Html::renderContainer('ul', implode($items), ['class' => 'nav nav-pills top-links']);
    }

    protected function renderTable()
    {
        return Html::renderContainer(
            'table',
            $this->renderTableHeaders()
            . Html::renderContainer('tbody', $this->renderTableRows($this->getInfo('options'))),
            $this->getInfo('tableAttribs', [])
        );
    }

    protected function renderTableRows($options, $parentId = null)
    {
        $xhtml = '';
        foreach ($options as $index => $option) {
            $xhtml .= $this->renderTableRow($option, $parentId);
            if (!empty($option['sub'])) {
                $xhtml .= $this->renderTableRows($option['sub'], $option['id']);
            }
        }
        return $xhtml;
    }

    protected function renderTableHeaders()
    {
        $xhtml  = '';
        $columns = $this->getInfo('columns', []);
        $hasTitle = false;
        foreach ($columns as $column) {
            if (!empty($column['title'])) {
                $hasTitle = true;
                break;
            }
        }
        if (!$hasTitle) {
            return $xhtml;
        }

        foreach ($columns as $column) {
            $attribs = [
                'class' => $column['name'] . '-header'
            ];
            $xhtml .= Html::renderContainer('th', $this->view->escape($column['title']), $attribs);
        }
        return Html::renderContainer(['thead', 'tr'], $xhtml);
    }

    protected function getValue($id, $field = null, $default = null)
    {
        static $rows;
        if (null == $rows) {
            $rows = Qs_Array::group($this->getInfo('value', []), $this->getMainColumnName(), []);
        }
        if (!array_key_exists($id, $rows)) {
            if (null === $field) {
                return [];
            }
            return $default;
        }
        return Qs_Array::get($rows[$id], $field, $default);
    }

    protected function getMainColumnName()
    {
        $columns = $this->getInfo('columns', []);
        foreach ($columns as $column) {
            if ($column['type'] == CheckboxTreeTableElement::MAIN) {
                return $column['name'];
            }
        }
        return null;
    }

    protected function isRowDisabled($row)
    {
        return 'y' == $row['disabled'] || $this->getValue($row['id'], $this->getMainColumnName()) != $row['id'];
    }

    protected function renderTableRow($row, $parentId)
    {
        $xhtml = '';
        $columns = $this->getInfo('columns', []);
        $prefix = $this->getInfo('name') . "[{$this->rowIndex}]";
        foreach ($columns as $column) {
            $name = $prefix . '[' . $column['name'] . ']';
            $value = $this->getValue($row['id'], $column['name'], Qs_Array::get($column, 'value'));
            switch ($column['type']) {
                case CheckboxTreeTableElement::MAIN:
                    $elementContent = $this->renderCheckbox(
                        $name,
                        $row['id'],
                        $row['id'] == $value,
                        $row['title'],
                        ['disable' => 'y' == $row['disabled'], 'data-main' => '']
                    );
                    break;
                case 'select':
                    $multiOptions = is_callable($column['multiOptions'])
                                  ? call_user_func($column['multiOptions'], $row)
                                  : $column['multiOptions'];
                    $elementContent = $this->view->formSelect(
                        $name,
                        $value,
                        ['disable' => $this->isRowDisabled($row), 'data-other' => ''],
                        $multiOptions
                    );
                    break;
                default:
                    throw new Exception('Unsupported column type "' . $column['type'] . '""');
            }
            $xhtml .= Html::renderContainer('td', $elementContent);
        }
        $trAttribs = ['data-tt-id' => $row['id']];
        if ($parentId) {
            $trAttribs['data-tt-parent-id'] = $parentId;
        }
        $this->rowIndex++;
        return Html::renderContainer('tr', $xhtml, $trAttribs);
    }

    protected function renderCheckbox($name, $value, $checked, $label, $attribs = [])
    {
        $attribs['disableHidden'] = true;
        $attribs['checked'] = $checked;
        $attribs['class'] = 'checkbox';

        return $this->view->formCheckbox(
            $name,
            $value,
            $attribs,
            []
        ) . $this->view->formLabel($name, $label);
    }
}