Merge pull request #74 from WebDevStudios/feature/CC-73-simplify-cart_hash

CC-73: rework cart_hash to be simple md5 string

Author: ggwicz

src/AbandonedCarts/CartHandler.php

@@ -177,7 +177,7 @@ public static function get_cart_data( $select, $where, $where_values ) {
 	 */
 	public static function get_cart_hash( int $cart_id ) {
 		return self::get_cart_data(
-			'HEX(cart_hash)',
+			'cart_hash',
 			'cart_id = %d',
 			[
 				intval( $cart_id ),
@@ -196,7 +196,7 @@ public static function get_cart_hash( int $cart_id ) {
 	public static function get_cart_contents( $cart_hash ) {
 		return self::get_cart_data(
 			'cart_contents',
-			'cart_hash = UNHEX(%s)',
+			'cart_hash = %s',
 			[
 				$cart_hash,
 			]
@@ -237,7 +237,7 @@ protected function save_cart_data( $user_id, $customer_data ) {
 					%d,
 					%s,
 					%d,
-					UNHEX(MD5(CONCAT(user_id, user_email)))
+					MD5(CONCAT(user_id, user_email))
 				) ON DUPLICATE KEY UPDATE `cart_updated` = VALUES(`cart_updated`), `cart_updated_ts` = VALUES(`cart_updated_ts`), `cart_contents` = VALUES(`cart_contents`)",
 				$user_id,
 				$customer_data['billing']['email'],

src/AbandonedCarts/CartsTable.php

@@ -25,7 +25,7 @@ class CartsTable extends Service {
 	 *
 	 * @since 2019-10-09
 	 */
-	const DB_VERSION = '1.3';
+	const DB_VERSION = '1.4';
 
 	/**
 	 * Option name for abandoned carts db version.
@@ -71,7 +71,7 @@ public function create_table() {
 			cart_updated_ts int(11) unsigned NOT NULL DEFAULT 0,
 			cart_created datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
 			cart_created_ts int(11) unsigned NOT NULL DEFAULT 0,
-			cart_hash binary(16) NOT NULL DEFAULT 0,
+			cart_hash char(32) NOT NULL DEFAULT '',
 			PRIMARY KEY (cart_id),
 			UNIQUE KEY cart_hash (cart_hash)
 		) {$wpdb->get_charset_collate()}";
@@ -96,6 +96,14 @@ protected function update_table() {
 		// phpcs:disable WordPress.DB.PreparedSQL -- Okay use of unprepared variable for table name in SQL.
 		if ( $wpdb->get_var( "SHOW TABLES LIKE '{$table_name}'" ) ) {
 
+			// Update `cart_hash` field for all records in versions older than 1.4.
+			if ( floatval( self::DB_VERSION_OPTION_NAME ) < 1.4 ) {
+				$wpdb->query(
+					"UPDATE {$table_name}
+					SET cart_hash = HEX(cart_hash)"
+				);
+			}
+
 			// Any data updates would be performed here.
 			update_option( self::DB_VERSION_OPTION_NAME, self::DB_VERSION );
 		}

src/Rest/AbandonedCarts/Controller.php

@@ -195,7 +195,7 @@ private function get_cart_data( int $per_page, int $offset, string $date_min, st
 					cart_updated_ts,
 					cart_created,
 					cart_created_ts,
-					HEX(cart_hash) as cart_hash
+					cart_hash
 				FROM {$table_name}
 				{$dates_where}
 				ORDER BY cart_updated_ts