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<?php
namespace Barn2\Plugin\Document_Library_Pro\Grid;
use Barn2\Plugin\Document_Library_Pro\Posts_Table_Pro\Table_Args;
/**
* Handles the caching for document grids.
*
* @package Barn2\document-library-pro
* @author Barn2 Plugins <support@barn2.com>
* @license GPL-3.0
* @copyright Barn2 Media Ltd
*/
class Grid_Cache {
const GRID_CACHE_EXPIRY = DAY_IN_SECONDS;
public $id;
public $args;
public $query;
/**
* Constructor.
*
* @param mixed $id
* @param Table_Args $args
* @param Grid_Query $query
*/
public function __construct( $id, Table_Args $args, Grid_Query $query ) {
$this->id = $id;
$this->args = $args;
$this->query = $query;
}
/**
* Retrieve a Grid from the cache.
*
* @param mixed $id
* @return false|Document_Grid
*/
public static function get_grid( $id ) {
$grid_cache = get_transient( $id );
$grid = false;
if ( $grid_cache && isset( $grid_cache['args'] ) ) {
$grid = new Document_Grid( $id, $grid_cache['args'] );
if ( isset( $grid_cache['total_posts'] ) ) {
$grid->query->set_total_posts( $grid_cache['total_posts'] );
}
}
return $grid;
}
/**
* Add a Grid to the cache.
*/
public function add_grid() {
$grid_cache = [ 'args' => $this->args->get_args() ];
set_transient( $this->get_grid_cache_key(), $grid_cache, self::GRID_CACHE_EXPIRY );
}
/**
* Update a Grid in the cache.
*
* @param bool $update_totals
*/
public function update_grid( $update_totals = false ) {
$grid_cache = get_transient( $this->id );
if ( $grid_cache ) {
// Existing grid found, so update it.
$grid_cache['args'] = $this->args->get_args();
if ( $update_totals ) {
$grid_cache['total_posts'] = $this->query->get_total_posts();
$grid_cache['total_filtered_posts'] = $this->query->get_total_filtered_posts();
}
set_transient( $this->get_grid_cache_key(), $grid_cache, self::GRID_CACHE_EXPIRY );
} else {
// No existing grid in cache, so add it.
$this->add_grid();
}
}
/**
* Get the Grid cache key.
*/
private function get_grid_cache_key() {
return $this->id;
}
}