Enable future events in WP 5.5 REST API

includes/api/class-sp-rest-posts-controller.php

@@ -6,5 +6,20 @@ if ( class_exists( 'WP_REST_Posts_Controller' ) ) {
 			parent::__construct( $post_type );
 			$this->namespace = 'sportspress/v2';
 		}
-	}
+
+    public function check_read_permission( $post ) {
+      $post_type = get_post_type_object( $post->post_type );
+      if ( ! $this->check_is_post_type_allowed( $post_type ) ) {
+        return false;
+      }
+
+      if ( 'sp_event' === $post->post_type ) {
+        if ( in_array( $post->post_status, array( 'publish', 'future' ) ) || current_user_can( 'read_post', $post->ID ) ) {
+          return true;
+        }
+      } else {
+        return WP_REST_Posts_Controller::check_read_permission( $post );
+      }
+    }
+  }
 }