feat: add method to validate and return Reflect\Response if Ruleset is invalid to the Ruleset class (#16)

Closes #13

Reviewed-on: https://codeberg.org/reflect/reflect-rules-plugin/pulls/16
Co-authored-by: vlw <victor@vlw.se>
Co-committed-by: vlw <victor@vlw.se>

README.md

@@ -1,11 +1,11 @@
-# Request validation plugin for the [Reflect API Framework](https://github.com/victorwesterlund/reflect)
+# Request validation plugin for the [Reflect API Framework](https://codeberg.org/reflect/reflect)
 This request pre-processor adds request validation for an API written in the Reflect API Framework.
 
 Write safer Reflect endpoints by enforcing request data structure validation before the request reaches your endpoint's logic. This plugin validates GET and POST data (even JSON) and returns an array with scoped `Error`s that can be further acted upon if desired.
 
-*Example:*
+## Example
 ```
-GET Request: /my-endpoint?key1=lorem-ipsum&key2=dolor
+POST Request: /my-endpoint?key1=lorem-ipsum&key2=dolor
 POST Body: {"key3":15, "key4":["hello", "world"]}
 ```
 ```php
@@ -16,7 +16,7 @@ use \ReflectRules\Type;
 use \ReflectRules\Rules;
 use \ReflectRules\Ruleset;
 
-class GET_MyEndpoint implements Endpoint {
+class POST_MyEndpoint implements Endpoint {
   private Ruleset $rules;
 
   public function __construct() {
@@ -71,6 +71,8 @@ Ruleset->get_errors();
 
 Use `Ruleset->is_valid(): bool` to quickly check if any errors are set.
 
+You can also use `Ruleset->validate_or_exit(): true|Response` to automatically return a `Reflect\Response` with all errors to current STDOUT if validation fails.
+
 # Installation
 
 Install with composer

src/Ruleset.php

@@ -4,6 +4,8 @@
 
 	use \ReflectRules\Rules;
 
+	use \Reflect\Response;
+
 	require_once "Rules.php";
 
 	// Available superglobal scopes
@@ -169,4 +171,9 @@
 
 			return $this->is_valid;
 		}
+
+		// Return Reflect\Response with errors and code 422 Unprocessable Content if validation failed
+		public function validate_or_exit(): true|Response {
+			return $this->is_valid() ? true : new Response($this->errors, 422);
+		}
 	}