Update shopify to include pagination

Signed-off-by: brookewp <[email protected]>

Author: brookewp

inc/Integrations/Shopify/Queries/SearchProducts.graphql

@@ -1,5 +1,16 @@
-query SearchProducts($search: String) {
-	products(first: 10, query: $search, sortKey: BEST_SELLING) {
+query SearchProducts($search: String!, $limit: Int!, $cursor_next: String) {
+	products(
+		first: $limit
+		after: $cursor_next
+		query: $search
+		sortKey: BEST_SELLING
+	) {
+		pageInfo {
+			hasNextPage
+			hasPreviousPage
+			startCursor
+			endCursor
+		}
 		edges {
 			node {
 				id

inc/Integrations/Shopify/ShopifyIntegration.php

@@ -86,6 +86,19 @@ public static function get_queries( ShopifyDataSource $data_source ): array {
 					'search' => [
 						'type' => 'ui:search_input',
 					],
+					'limit' => [
+						'default_value' => 8,
+						'name' => 'Items per page',
+						'type' => 'ui:pagination_per_page',
+					],
+					'cursor_next' => [
+						'name' => 'Next page cursor',
+						'type' => 'ui:pagination_cursor_next',
+					],
+					'cursor_previous' => [
+						'name' => 'Previous page cursor',
+						'type' => 'ui:pagination_cursor_previous',
+					],
 				],
 				'output_schema' => [
 					'path' => '$.data.products.edges[*]',
@@ -113,6 +126,18 @@ public static function get_queries( ShopifyDataSource $data_source ): array {
 						],
 					],
 				],
+				'pagination_schema' => [
+					'cursor_next' => [
+						'name' => 'Next page cursor',
+						'path' => '$.data.products.pageInfo.endCursor',
+						'type' => 'string',
+					],
+					'cursor_previous' => [
+						'name' => 'Previous page cursor',
+						'path' => '$.data.products.pageInfo.startCursor',
+						'type' => 'string',
+					],
+				],
 				'graphql_query' => file_get_contents( __DIR__ . '/Queries/SearchProducts.graphql' ),
 			] ),
 		];

inc/Validation/ConfigSchemas.php

@@ -291,11 +291,13 @@ private static function generate_http_query_config_schema(): array {
 					// items available in paginated results. This field must be defined
 					// in order present to enable pagination support of any type,
 					// including cursor-based pagination.
-					'total_items' => Types::object( [
+					'total_items' => Types::nullable(
+						Types::object( [
 						'name' => Types::nullable( Types::string() ),
 						'path' => Types::json_path(),
 						'type' => Types::enum( 'integer' ),
 					] ),
+					),
 					// This field provides a pagination cursor for the next page of
 					// paginated results, or a null value if there is no next page. This
 					// field must be defined in order to enable cursor-based pagination.