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<?php
/**
* @package ZOO
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Exporter for K2 items and categories
*
* @package Component.Classes.Exporters
*/
class AppExporterK2 extends AppExporter {
/**
* Class Constructor
*/
public function __construct() {
parent::__construct();
$this->_name = 'K2';
}
/**
* If K2 is installed on the system
*
* @return boolean If K2 is installed on the system
*
* @since 2.0
*/
public function isEnabled() {
$path_to_xml = JPATH_ADMINISTRATOR . '/components/com_k2/manifest.xml';
if (JFile::exists($path_to_xml) && ($data = JApplicationHelper::parseXMLInstallFile($path_to_xml))) {
return (version_compare($data['version'], '2.1') >= 0);
}
return false;
}
/**
* Do the real export of items and categories
*
* @return string The JSON dump of the items and categories
*
* @since 2.0
*/
public function export() {
$db = $this->app->database;
// get k2 categories
$query = "SELECT a.*, b.name AS extra_field_group_name "
." FROM #__k2_categories AS a"
." LEFT JOIN #__k2_extra_fields_groups AS b ON b.id = a.extraFieldsGroup";
$categories = $db->queryObjectList($query, 'id');
// sanatize category aliases
$aliases = array();
foreach ($categories as $category) {
$i = 2;
$alias = $this->app->string->sluggify($category->alias);
while (in_array($alias, $aliases)) {
$alias = $category->alias . '-' . $i++;
}
$category->alias = $alias;
// remember used aliases to ensure unique aliases
$aliases[] = $category->alias;
}
// export categories
foreach ($categories as $category) {
// assign attributes
$data = array();
foreach ($this->category_attributes as $attribute) {
if (isset($category->$attribute)) {
$data[$attribute] = $category->$attribute;
}
}
// sanatize parent
if ($category->parent && isset($categories[$category->parent])) {
$data['parent'] = $categories[$category->parent]->alias;
}
// add category
if ($category->image) {
$data['content']['image'] = '/media/k2/categories/'.$category->image;
}
$this->_addCategory($category->name, $category->alias, $data);
}
// get k2 items
$query = "SELECT * FROM #__k2_items";
$items = $db->queryObjectList($query, 'id');
// get k2 extra fields
$query = "SELECT * FROM #__k2_extra_fields";
$extra_fields = $db->queryObjectList($query, 'id');
// get k2 tags
$query = "SELECT a.itemID, b.name"
." FROM #__k2_tags_xref as a"
." JOIN #__k2_tags AS b ON a.tagID = b.id";
$tag_result = $db->queryObjectList($query);
$tags = array();
foreach ($tag_result as $tag) {
$tags[$tag->itemID][] = $tag->name;
}
// sanatize item aliases
$aliases = array();
foreach ($items as $item) {
$i = 2;
$alias = $this->app->string->sluggify($item->alias);
while (in_array($alias, $aliases)) {
$alias = $item->alias . '-' . $i++;
}
$item->alias = $alias;
// remember used aliases to ensure unique aliases
$aliases[] = $item->alias;
}
// export items
foreach ($items as $item) {
if (!$item->trash) {
if (!$type = $categories[$item->catid]->extra_field_group_name) {
$type = JText::_('K2-Unassigned');
}
$this->_addItem($item, $extra_fields, $categories, $tags, $type);
}
}
return parent::export();
}
/**
* Add an item to the list of items to export
*
* @param object $item The item to export
* @param array $extra_fields The extra fields for this item
* @param array $categories The categories for this item
* @param array $tags The item tags
* @param string $group The item group
*
* @return AppExporterK2 $this for chaining support
*/
protected function _addItem($item, $extra_fields, $categories = array(), $tags = array(), $group = 'default') {
$data = array();
foreach ($this->item_attributes as $attribute) {
if (isset($item->$attribute)) {
$data[$attribute] = $item->$attribute;
}
}
// add author
$data['author'] = $this->app->user->get($item->created_by)->username;
// add state
$data['state'] = $item->published;
// add category
$data['categories'][] = $categories[$item->catid]->alias;
// add tags
$data['tags'] = isset($tags[$item->id]) ? $tags[$item->id] : array();
// add item content
$i = 0;
$data['elements'][$i]['type'] = 'textarea';
$data['elements'][$i]['name'] = 'content';
$data['elements'][$i++]['data'] = array(array('value' => $item->introtext), array('value' => $item->fulltext));
$data['elements'][$i]['type'] = 'image';
$data['elements'][$i]['name'] = 'image';
$data['elements'][$i++]['data'] = array('file' => 'media/k2/items/src/'.md5("Image".$item->id).'.jpg');
// add extra fields
if (isset($item->extra_fields)) {
foreach (json_decode($item->extra_fields) as $element) {
$extrafield = $extra_fields[$element->id];
switch ($extrafield->type) {
case 'textfield':
$data['elements'][$i]['type'] = 'text';
$data['elements'][$i]['name'] = $extrafield->name;
$data['elements'][$i++]['data'] = array(array('value' => $element->value));
break;
case 'textarea':
$data['elements'][$i]['type'] = 'textarea';
$data['elements'][$i]['name'] = $extrafield->name;
$data['elements'][$i++]['data'] = array(array('value' => $element->value));
break;
case 'select':
case 'multipleSelect':
$data['elements'][$i]['type'] = 'select';
$data['elements'][$i]['name'] = $extrafield->name;
$data['elements'][$i++]['data'] = array('option' => $element->value);
break;
case 'radio':
$data['elements'][$i]['type'] = 'radio';
$data['elements'][$i]['name'] = $extrafield->name;
$data['elements'][$i++]['data'] = array('option' => $element->value);
break;
case 'link':
$data['elements'][$i]['type'] = 'link';
$data['elements'][$i]['name'] = $extrafield->name;
$data['elements'][$i++]['data'] = array(array('text' => $element->value[0], 'value' => $element->value[1]));
break;
}
}
}
parent::_addItem($item->title, $item->alias, $group, $data);
}
}