From 63236585dbea905eaaa3105a22ca62bc7e1e12be Mon Sep 17 00:00:00 2001
From: Carsten Bach <mail@carsten-bach.de>
Date: Mon, 16 Oct 2023 11:05:34 +0200
Subject: [PATCH] Cache queries in transients

---
 ft-network-sourcelinks.php                    | 54 +++++++++++++++----
 inc/Network/Post_Types/Post_Type__ft_link.php |  6 ++-
 2 files changed, 50 insertions(+), 10 deletions(-)

diff --git a/ft-network-sourcelinks.php b/ft-network-sourcelinks.php
index 31c51d4..d3ded57 100644
--- a/ft-network-sourcelinks.php
+++ b/ft-network-sourcelinks.php
@@ -32,6 +32,9 @@
  * @package         Ft_Network_Sourcelinks
  */
 
+ const TRANSIENT_KEY = 'ft_ns_urls';
+
+
 /**
  * This class handles all the major use-cases for external URLs in WordPress
  *
@@ -224,18 +227,11 @@ public function enable__on_admin() : void
 	{
 		$this->debug();
 	}*/
-
-
-	public static function get_urls() : Array
-	{
-		// minimal caching
-		if( isset( self::$urls ) && !empty( self::$urls ) )
-			return self::$urls;
-
+	public static function query_urls() : Array {
 		$ft_query = \Figuren_Theater\FT_Query::init();
 
 		//
-		return self::$urls = $ft_query->find_many_by_type(
+		return $ft_query->find_many_by_type(
 			Post_Types\Post_Type__ft_link::NAME,
 			'publish',
 			[
@@ -252,9 +248,49 @@ public static function get_urls() : Array
 				'update_post_term_cache' => false,
 
 				// 'suppress_filters'       => true,
+				'no_found_rows'  => true, // Useful when pagination is not needed.
+				'posts_per_page' => 25,
 			]
 		);
+	}
+
+	/**
+	 * Get stored labels from the database.
+	 *
+	 * Uses transients to cache simplified WP_Query results.
+	 *
+	 * @return Array An array of Label objects.
+	 */
+	public static function get_stored_urls() : array {
+
+		// Check if the value is already stored.
+		$stored_urls = \get_transient( TRANSIENT_KEY );
+
+		if ( empty( $stored_urls ) ) {
+
+			// Retrieve posts from DB.
+			$stored_urls = static::query_urls();
+
+			// Store for long,
+			// because this will beflushed with every new (and updated) 'wp_block' post.
+			\set_transient(
+				TRANSIENT_KEY,
+				$stored_urls,
+				\WEEK_IN_SECONDS
+			);
+		}
+
+		return $stored_urls;
+	}
+
+
+	public static function get_urls() : Array
+	{
+		// minimal caching
+		if( isset( self::$urls ) && !empty( self::$urls ) )
+			return self::$urls;
 
+		return self::$urls = static::get_stored_urls();
 	}
 
 
diff --git a/inc/Network/Post_Types/Post_Type__ft_link.php b/inc/Network/Post_Types/Post_Type__ft_link.php
index 785ff74..5c2e2d0 100644
--- a/inc/Network/Post_Types/Post_Type__ft_link.php
+++ b/inc/Network/Post_Types/Post_Type__ft_link.php
@@ -6,6 +6,7 @@
 use Figuren_Theater\inc\EventManager;
 use Figuren_Theater\Network\Taxonomies;
 use Figuren_Theater\Network\Users;
+use Figuren_Theater\Network\Sources;
 
 use WP_Post;
 
@@ -444,10 +445,13 @@ function ( string $service_url ) use ( $url_short ) {
 		return false;
 	}
 	 */
-	
+
 	// Create a simple function to delete our transient
 	public static function delete_transient() {
+		// Has all our links with 'OWN' taxonomy-term.
 		\delete_transient( 'ft_link_own_q' );
+		// Has all our links.
+		\delete_transient( Sources\TRANSIENT_KEY );
 	}