JezK

Edit File: class-previews.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class to handle preview scenarios, where rest/ajax calls are made from a gallery that is in preview mode.
 */
if (! class_exists('FooGallery_Previews')) {

class FooGallery_Previews
	{

/**
		 * FooGallery_Previews constructor.
		 */
		function __construct()
		{
			//override gallery settings specifically for previews.

if ($this->should_init()) {
				$this->safe_init();
			}

add_action('rest_api_init', function () {
				if ($this->should_init()) {
					$this->safe_init();
				}
			});
		}

/**
		 * Check if the preview functionality should be initialized.
		 */
		private function should_init()
		{
			//first, check if we are in the admin
			if (is_admin()) {
				return true;
			}

//then, check if we are a rest request in admin
			if (foogallery_is_rest_request_from_admin()) {
				return true;
			}

return false;
		}

/**
		 * Safely init the preview functionality.
		 */
		private function safe_init()
		{
			if (has_filter('foogallery_instance_get_setting')) {
				return;
			}

add_filter('foogallery_instance_get_setting', array($this, 'override_instance_get_setting_for_previews'), 10, 4);
			add_action('foogallery_instance_after_load', array($this, 'override_gallery_properties_for_previews'), 10, 1);
			add_action('foogallery_preview_before_render', array($this, 'store_preview_data'), 10, 2);
		}

/**
		 * Temporarily store the preview data, so it can be picked up by AJAX / Rest requests.
		 */
		public function store_preview_data($foogallery_id, $args)
		{
			//store transient for 5 minutes
			set_transient('foogallery_preview_data_' . $foogallery_id, $args, 60 * 5);
		}

/**
		 * Override the gallery settings for previews.
		 */
		public function override_instance_get_setting_for_previews($value, $key, $default, $gallery)
		{
			if (!isset($gallery) || !is_a($gallery, 'FooGallery')) {
				return $value;
			}

$temp_preview_data = $this->get_preview_data($gallery);
			if (!is_array($temp_preview_data) || empty($temp_preview_data)) {
				return $value;
			}

if (isset($temp_preview_data[$key])) {
				return $temp_preview_data[$key];
			}

return $value;
		}

/**
		 * Override gallery properties for previews.
		 *
		 * @param FooGallery $gallery The gallery instance being loaded.
		 */
		public function override_gallery_properties_for_previews($gallery)
		{
			if (!isset($gallery) || !is_a($gallery, 'FooGallery')) {
				return;
			}

$temp_preview_data = $this->get_preview_data($gallery);
			if (!is_array($temp_preview_data) || empty($temp_preview_data)) {
				return;
			}

if (array_key_exists('sort', $temp_preview_data)) {
				$sort = sanitize_text_field($temp_preview_data['sort']);
				$sort_options = foogallery_sorting_options();

if (array_key_exists($sort, $sort_options)) {
					$gallery->sorting = $sort;
				}
			}
		}

/**
		 * Get stored preview data for a gallery.
		 *
		 * @param FooGallery $gallery The gallery instance being loaded.
		 *
		 * @return array|false
		 */
		private function get_preview_data($gallery)
		{
			$gallery_id = intval($gallery->ID);
			if ($gallery_id === 0) {
				return false;
			}

$temp_preview_data = get_transient('foogallery_preview_data_' . $gallery_id);

if (!is_array($temp_preview_data) || empty($temp_preview_data)) {
				return false;
			}

return $temp_preview_data;
		}
	}
}

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