Redirect the default REST prefix (#5)

Author: rmccue

content/plugins/f-api/inc/namespace.php

@@ -27,6 +27,7 @@ function bootstrap() : void {
 
 	// Register our own rewrites.
 	add_action( 'init', __NAMESPACE__ . '\\register_rewrites' );
+	add_action( 'parse_request', __NAMESPACE__ . '\\redirect_old_namespace', 0 );
 
 	Events\bootstrap();
 }
@@ -44,3 +45,14 @@ function register_rewrites() : void {
 	add_rewrite_rule( '$', 'index.php?rest_route=/', 'bottom' );
 	add_rewrite_rule( '^(.*)?', 'index.php?rest_route=/$matches[1]', 'bottom' );
 }
+
+/**
+ * Redirect the wp-json default prefix.
+ */
+function redirect_old_namespace() : void {
+	if ( strpos( $_SERVER['REQUEST_URI'], '/wp-json/' ) !== false ) {
+		$new_url = substr( $_SERVER['REQUEST_URI'], 8 );
+		wp_safe_redirect( rest_url( $new_url ), 301 );
+		exit;
+	}
+}