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<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_banners
 *
 * @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\Banners\Administrator\Model;

\defined('_JEXEC') or die;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\MVC\Model\ListModel;
use Joomla\Database\ParameterType;

/**
 * Methods supporting a list of banner records.
 *
 * @since  1.6
 */
class ClientsModel 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',
				'contact', 'a.contact',
				'state', 'a.state',
				'checked_out', 'a.checked_out',
				'checked_out_time', 'a.checked_out_time',
				'purchase_type', 'a.purchase_type'
			);
		}

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')
	{
		// Load the parameters.
		$this->setState('params', ComponentHelper::getParams('com_banners'));

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

/**
	 * 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  $id  A prefix for the store id.
	 *
	 * @return  string  A store id.
	 */
	protected function getStoreId($id = '')
	{
		// Compile the store id.
		$id .= ':' . $this->getState('filter.search');
		$id .= ':' . $this->getState('filter.state');
		$id .= ':' . $this->getState('filter.purchase_type');

return parent::getStoreId($id);
	}

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

$defaultPurchase = (int) ComponentHelper::getParams('com_banners')->get('purchase_type', 3);

// Select the required fields from the table.
		$query->select(
			$this->getState(
				'list.select',
				[
					$db->quoteName('a.id'),
					$db->quoteName('a.name'),
					$db->quoteName('a.contact'),
					$db->quoteName('a.checked_out'),
					$db->quoteName('a.checked_out_time'),
					$db->quoteName('a.state'),
					$db->quoteName('a.metakey'),
					$db->quoteName('a.purchase_type'),
				]
			)
		)
			->select(
				[
					'COUNT(' . $db->quoteName('b.id') . ') AS ' . $db->quoteName('nbanners'),
					$db->quoteName('uc.name', 'editor'),
				]
			);

$query->from($db->quoteName('#__banner_clients', 'a'));

// Join over the banners for counting
		$query->join('LEFT', $db->quoteName('#__banners', 'b'), $db->quoteName('a.id') . ' = ' . $db->quoteName('b.cid'));

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

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

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

$query->group(
			[
				$db->quoteName('a.id'),
				$db->quoteName('a.name'),
				$db->quoteName('a.contact'),
				$db->quoteName('a.checked_out'),
				$db->quoteName('a.checked_out_time'),
				$db->quoteName('a.state'),
				$db->quoteName('a.metakey'),
				$db->quoteName('a.purchase_type'),
				$db->quoteName('uc.name'),
			]
		);

// Filter by search in title
		if ($search = trim($this->getState('filter.search')))
		{
			if (stripos($search, 'id:') === 0)
			{
				$search = (int) substr($search, 3);
				$query->where($db->quoteName('a.id') . ' = :search')
					->bind(':search', $search, ParameterType::INTEGER);
			}
			else
			{
				$search = '%' . str_replace(' ', '%', $search) . '%';
				$query->where($db->quoteName('a.name') . ' LIKE :search')
					->bind(':search', $search);
			}
		}

// Filter by purchase type
		if ($purchaseType = (int) $this->getState('filter.purchase_type'))
		{
			if ($defaultPurchase === $purchaseType)
			{
				$query->where('(' . $db->quoteName('a.purchase_type') . ' = :type OR ' . $db->quoteName('a.purchase_type') . ' = -1)');
			}
			else
			{
				$query->where($db->quoteName('a.purchase_type') . ' = :type');
			}

$query->bind(':type', $purchaseType, ParameterType::INTEGER);
		}

// Add the list ordering clause.
		$query->order(
			$db->quoteName($db->escape($this->getState('list.ordering', 'a.name'))) . ' ' . $db->escape($this->getState('list.direction', 'ASC'))
		);

return $query;
	}

/**
	 * Overrides the getItems method to attach additional metrics to the list.
	 *
	 * @return  mixed  An array of data items on success, false on failure.
	 *
	 * @since   3.6
	 */
	public function getItems()
	{
		// Get a storage key.
		$store = $this->getStoreId('getItems');

// Try to load the data from internal storage.
		if (!empty($this->cache[$store]))
		{
			return $this->cache[$store];
		}

// Load the list items.
		$items = parent::getItems();

// If empty or an error, just return.
		if (empty($items))
		{
			return array();
		}

// Getting the following metric by joins is WAY TOO SLOW.
		// Faster to do three queries for very large banner trees.

// Get the clients in the list.
		$db = $this->getDbo();
		$clientIds = array_column($items, 'id');

$query = $db->getQuery(true)
			->select(
				[
					$db->quoteName('cid'),
					'COUNT(' . $db->quoteName('cid') . ') AS ' . $db->quoteName('count_published'),
				]
			)
			->from($db->quoteName('#__banners'))
			->where($db->quoteName('state') . ' = :state')
			->whereIn($db->quoteName('cid'), $clientIds)
			->group($db->quoteName('cid'))
			->bind(':state', $state, ParameterType::INTEGER);

$db->setQuery($query);

// Get the published banners count.
		try
		{
			$state = 1;
			$countPublished = $db->loadAssocList('cid', 'count_published');
		}
		catch (\RuntimeException $e)
		{
			$this->setError($e->getMessage());

return false;
		}

// Get the unpublished banners count.
		try
		{
			$state = 0;
			$countUnpublished = $db->loadAssocList('cid', 'count_published');
		}
		catch (\RuntimeException $e)
		{
			$this->setError($e->getMessage());

return false;
		}

// Get the trashed banners count.
		try
		{
			$state = -2;
			$countTrashed = $db->loadAssocList('cid', 'count_published');
		}
		catch (\RuntimeException $e)
		{
			$this->setError($e->getMessage());

return false;
		}

// Get the archived banners count.
		try
		{
			$state = 2;
			$countArchived = $db->loadAssocList('cid', 'count_published');
		}
		catch (\RuntimeException $e)
		{
			$this->setError($e->getMessage());

return false;
		}

// Inject the values back into the array.
		foreach ($items as $item)
		{
			$item->count_published   = isset($countPublished[$item->id]) ? $countPublished[$item->id] : 0;
			$item->count_unpublished = isset($countUnpublished[$item->id]) ? $countUnpublished[$item->id] : 0;
			$item->count_trashed     = isset($countTrashed[$item->id]) ? $countTrashed[$item->id] : 0;
			$item->count_archived    = isset($countArchived[$item->id]) ? $countArchived[$item->id] : 0;
		}

// Add the items to the internal cache.
		$this->cache[$store] = $items;

return $this->cache[$store];
	}
}