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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_contact
 *
 * @copyright   (C) 2008 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Contact\Administrator\Model;

\defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Language\Associations;
use Joomla\CMS\MVC\Model\ListModel;
use Joomla\CMS\Table\Table;
use Joomla\Database\ParameterType;
use Joomla\Utilities\ArrayHelper;

/**
 * Methods supporting a list of contact records.
 *
 * @since  1.6
 */
class ContactsModel extends ListModel
{
	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 *
	 * @since   1.6
	 */
	public function __construct($config = array())
	{
		if (empty($config['filter_fields']))
		{
			$config['filter_fields'] = array(
				'id', 'a.id',
				'name', 'a.name',
				'alias', 'a.alias',
				'checked_out', 'a.checked_out',
				'checked_out_time', 'a.checked_out_time',
				'catid', 'a.catid', 'category_id', 'category_title',
				'user_id', 'a.user_id',
				'published', 'a.published',
				'access', 'a.access', 'access_level',
				'created', 'a.created',
				'created_by', 'a.created_by',
				'ordering', 'a.ordering',
				'featured', 'a.featured',
				'language', 'a.language', 'language_title',
				'publish_up', 'a.publish_up',
				'publish_down', 'a.publish_down',
				'ul.name', 'linked_user',
				'tag',
				'level', 'c.level',
			);

if (Associations::isEnabled())
			{
				$config['filter_fields'][] = 'association';
			}
		}

parent::__construct($config);
	}

/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @param   string  $ordering   An optional ordering field.
	 * @param   string  $direction  An optional direction (asc|desc).
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function populateState($ordering = 'a.name', $direction = 'asc')
	{
		$app = Factory::getApplication();

$forcedLanguage = $app->input->get('forcedLanguage', '', 'cmd');

// Adjust the context to support modal layouts.
		if ($layout = $app->input->get('layout'))
		{
			$this->context .= '.' . $layout;
		}

// Adjust the context to support forced languages.
		if ($forcedLanguage)
		{
			$this->context .= '.' . $forcedLanguage;
		}

// List state information.
		parent::populateState($ordering, $direction);

// Force a language.
		if (!empty($forcedLanguage))
		{
			$this->setState('filter.language', $forcedLanguage);
		}
	}

/**
	 * Method to get a store id based on model configuration state.
	 *
	 * This is necessary because the model is used by the component and
	 * different modules that might need different sets of data or different
	 * ordering requirements.
	 *
	 * @param   string  $id  A prefix for the store id.
	 *
	 * @return  string  A store id.
	 *
	 * @since   1.6
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id .= ':' . $this->getState('filter.search');
		$id .= ':' . $this->getState('filter.published');
		$id .= ':' . serialize($this->getState('filter.category_id'));
		$id .= ':' . $this->getState('filter.access');
		$id .= ':' . $this->getState('filter.language');
		$id .= ':' . serialize($this->getState('filter.tag'));
		$id .= ':' . $this->getState('filter.level');

return parent::getStoreId($id);
	}

/**
	 * Build an SQL query to load the list data.
	 *
	 * @return  \JDatabaseQuery
	 *
	 * @since   1.6
	 */
	protected function getListQuery()
	{
		// Create a new query object.
		$db = $this->getDbo();
		$query = $db->getQuery(true);
		$user = Factory::getUser();

// Select the required fields from the table.
		$query->select(
			$db->quoteName(
				explode(
					', ',
					$this->getState(
						'list.select',
						'a.id, a.name, a.alias, a.checked_out, a.checked_out_time, a.catid, a.user_id' .
						', a.published, a.access, a.created, a.created_by, a.ordering, a.featured, a.language' .
						', a.publish_up, a.publish_down'
					)
				)
			)
		);
		$query->from($db->quoteName('#__contact_details', 'a'));

// Join over the users for the linked user.
		$query->select(
			array(
				$db->quoteName('ul.name', 'linked_user'),
				$db->quoteName('ul.email')
			)
		)
			->join(
				'LEFT',
				$db->quoteName('#__users', 'ul') . ' ON ' . $db->quoteName('ul.id') . ' = ' . $db->quoteName('a.user_id')
			);

// Join over the language
		$query->select($db->quoteName('l.title', 'language_title'))
			->select($db->quoteName('l.image', 'language_image'))
			->join(
				'LEFT',
				$db->quoteName('#__languages', 'l') . ' ON ' . $db->quoteName('l.lang_code') . ' = ' . $db->quoteName('a.language')
			);

// Join over the users for the checked out user.
		$query->select($db->quoteName('uc.name', 'editor'))
			->join(
				'LEFT',
				$db->quoteName('#__users', 'uc') . ' ON ' . $db->quoteName('uc.id') . ' = ' . $db->quoteName('a.checked_out')
			);

// Join over the asset groups.
		$query->select($db->quoteName('ag.title', 'access_level'))
			->join(
				'LEFT',
				$db->quoteName('#__viewlevels', 'ag') . ' ON ' . $db->quoteName('ag.id') . ' = ' . $db->quoteName('a.access')
			);

// Join over the categories.
		$query->select($db->quoteName('c.title', 'category_title'))
			->join(
				'LEFT',
				$db->quoteName('#__categories', 'c') . ' ON ' . $db->quoteName('c.id') . ' = ' . $db->quoteName('a.catid')
			);

// Join over the associations.
		if (Associations::isEnabled())
		{
			$subQuery = $db->getQuery(true)
				->select('COUNT(' . $db->quoteName('asso1.id') . ') > 1')
				->from($db->quoteName('#__associations', 'asso1'))
				->join('INNER', $db->quoteName('#__associations', 'asso2'), $db->quoteName('asso1.key') . ' = ' . $db->quoteName('asso2.key'))
				->where(
					[
						$db->quoteName('asso1.id') . ' = ' . $db->quoteName('a.id'),
						$db->quoteName('asso1.context') . ' = ' . $db->quote('com_contact.item'),
					]
				);

$query->select('(' . $subQuery . ') AS ' . $db->quoteName('association'));
		}

// Filter by featured.
		$featured = (string) $this->getState('filter.featured');

if (in_array($featured, ['0','1']))
		{
			$query->where($db->quoteName('a.featured') . ' = ' . (int) $featured);
		}

// Filter by access level.
		if ($access = $this->getState('filter.access'))
		{
			$query->where($db->quoteName('a.access') . ' = :access');
			$query->bind(':access', $access, ParameterType::INTEGER);
		}

// Implement View Level Access
		if (!$user->authorise('core.admin'))
		{
			$query->whereIn($db->quoteName('a.access'), $user->getAuthorisedViewLevels());
		}

// Filter by published state
		$published = (string) $this->getState('filter.published');

if (is_numeric($published))
		{
			$query->where($db->quoteName('a.published') . ' = :published');
			$query->bind(':published', $published, ParameterType::INTEGER);
		}
		elseif ($published === '')
		{
			$query->where('(' . $db->quoteName('a.published') . ' = 0 OR ' . $db->quoteName('a.published') . ' = 1)');
		}

// Filter by search in name.
		$search = $this->getState('filter.search');

if (!empty($search))
		{
			if (stripos($search, 'id:') === 0)
			{
				$search = substr($search, 3);
				$query->where($db->quoteName('a.id') . ' = :id');
				$query->bind(':id', $search, ParameterType::INTEGER);
			}
			else
			{
				$search = '%' . trim($search) . '%';
				$query->where(
					'(' . $db->quoteName('a.name') . ' LIKE :name OR ' . $db->quoteName('a.alias') . ' LIKE :alias)'
				);
				$query->bind(':name', $search);
				$query->bind(':alias', $search);
			}
		}

// Filter on the language.
		if ($language = $this->getState('filter.language'))
		{
			$query->where($db->quoteName('a.language') . ' = :language');
			$query->bind(':language', $language);
		}

// Filter by a single or group of tags.
		$tag = $this->getState('filter.tag');

// Run simplified query when filtering by one tag.
		if (\is_array($tag) && \count($tag) === 1)
		{
			$tag = $tag[0];
		}

if ($tag && \is_array($tag))
		{
			$tag = ArrayHelper::toInteger($tag);

$subQuery = $db->getQuery(true)
				->select('DISTINCT ' . $db->quoteName('content_item_id'))
				->from($db->quoteName('#__contentitem_tag_map'))
				->where(
					[
						$db->quoteName('tag_id') . ' IN (' . implode(',', $query->bindArray($tag)) . ')',
						$db->quoteName('type_alias') . ' = ' . $db->quote('com_contact.contact'),
					]
				);

$query->join(
				'INNER',
				'(' . $subQuery . ') AS ' . $db->quoteName('tagmap'),
				$db->quoteName('tagmap.content_item_id') . ' = ' . $db->quoteName('a.id')
			);
		}
		elseif ($tag = (int) $tag)
		{
			$query->join(
				'INNER',
				$db->quoteName('#__contentitem_tag_map', 'tagmap'),
				$db->quoteName('tagmap.content_item_id') . ' = ' . $db->quoteName('a.id')
			)
				->where(
					[
						$db->quoteName('tagmap.tag_id') . ' = :tag',
						$db->quoteName('tagmap.type_alias') . ' = ' . $db->quote('com_contact.contact'),
					]
				)
				->bind(':tag', $tag, ParameterType::INTEGER);
		}

// Filter by categories and by level
		$categoryId = $this->getState('filter.category_id', array());
		$level = $this->getState('filter.level');

if (!is_array($categoryId))
		{
			$categoryId = $categoryId ? array($categoryId) : array();
		}

// Case: Using both categories filter and by level filter
		if (count($categoryId))
		{
			$categoryId = ArrayHelper::toInteger($categoryId);
			$categoryTable = Table::getInstance('Category', 'JTable');
			$subCatItemsWhere = array();

// TODO: Convert to prepared statement
			foreach ($categoryId as $filter_catid)
			{
				$categoryTable->load($filter_catid);
				$subCatItemsWhere[] = '(' .
					($level ? 'c.level <= ' . ((int) $level + (int) $categoryTable->level - 1) . ' AND ' : '') .
					'c.lft >= ' . (int) $categoryTable->lft . ' AND ' .
					'c.rgt <= ' . (int) $categoryTable->rgt . ')';
			}

$query->where('(' . implode(' OR ', $subCatItemsWhere) . ')');
		}

// Case: Using only the by level filter
		elseif ($level)
		{
			$query->where($db->quoteName('c.level') . ' <= :level');
			$query->bind(':level', $level, ParameterType::INTEGER);
		}

// Add the list ordering clause.
		$orderCol = $this->state->get('list.ordering', 'a.name');
		$orderDirn = $this->state->get('list.direction', 'asc');

if ($orderCol == 'a.ordering' || $orderCol == 'category_title')
		{
			$orderCol = $db->quoteName('c.title') . ' ' . $orderDirn . ', ' . $db->quoteName('a.ordering');
		}

$query->order($db->escape($orderCol . ' ' . $orderDirn));

return $query;
	}
}