added ability to group routes together

flight/Engine.php

@@ -33,6 +33,7 @@ use Throwable;
  * 
  * Routing
  * @method void route(string $pattern, callable $callback, bool $pass_route = false) Routes a URL to a callback function.
+ * @method void group(string $pattern, callable $callback) Groups a set of routes together under a common prefix.
  * @method void get(string $pattern, callable $callback, bool $pass_route = false) Routes a GET URL to a callback function.
  * @method void post(string $pattern, callable $callback, bool $pass_route = false) Routes a POST URL to a callback function.
  * @method void put(string $pattern, callable $callback, bool $pass_route = false) Routes a PUT URL to a callback function.
@@ -151,7 +152,7 @@ class Engine
         $methods = [
             'start', 'stop', 'route', 'halt', 'error', 'notFound',
             'render', 'redirect', 'etag', 'lastModified', 'json', 'jsonp',
-            'post', 'put', 'patch', 'delete',
+            'post', 'put', 'patch', 'delete', 'group',
         ];
         foreach ($methods as $name) {
             $this->dispatcher->set($name, [$this, '_' . $name]);
@@ -468,6 +469,17 @@ class Engine
         $this->router()->map($pattern, $callback, $pass_route);
     }
 
+	/**
+     * Routes a URL to a callback function.
+     *
+     * @param string   $pattern    URL pattern to match
+     * @param callable $callback   Callback function that includes the Router class as first parameter
+     */
+    public function _group(string $pattern, callable $callback): void
+    {
+        $this->router()->group($pattern, $callback);
+    }
+
     /**
      * Routes a URL to a callback function.
      *

flight/Flight.php

@@ -24,6 +24,7 @@ use flight\template\View;
  * @method  static void halt(int $code = 200, string $message = '') Stop the framework with an optional status code and message.
  *
  * @method  static void route(string $pattern, callable $callback, bool $pass_route = false) Maps a URL pattern to a callback.
+ * @method  static void group(string $pattern, callable $callback) Groups a set of routes together under a common prefix.
  * @method  static Router router() Returns Router instance.
  *
  * @method  static void map(string $name, callable $callback) Creates a custom framework method.

flight/net/Router.php

@@ -32,6 +32,13 @@ class Router
      */
     protected int $index = 0;
 
+	/**
+	 * When groups are used, this is mapped against all the routes
+	 *
+	 * @var string
+	 */
+	protected string $group_prefix = '';
+
     /**
      * Gets mapped routes.
      *
@@ -59,7 +66,7 @@ class Router
      */
     public function map(string $pattern, callable $callback, bool $pass_route = false): void
     {
-        $url = trim($pattern);
+        $url = $this->group_prefix.trim($pattern);
         $methods = ['*'];
 
         if (false !== strpos($url, ' ')) {
@@ -71,6 +78,20 @@ class Router
         $this->routes[] = new Route($url, $callback, $methods, $pass_route);
     }
 
+	/**
+	 * Group together a set of routes
+	 *
+	 * @param string   $group_prefix group URL prefix (such as /api/v1)
+	 * @param callable $callback     The necessary calling that holds the Router class
+	 * @return void
+	 */
+	public function group(string $group_prefix, callable $callback): void {
+		$old_group_prefix = $this->group_prefix;
+		$this->group_prefix .= $group_prefix;
+		$callback($this);
+		$this->group_prefix = $old_group_prefix;
+	}
+
     /**
      * Routes the current request.
      *

tests/FlightTest.php

@@ -96,4 +96,26 @@ class FlightTest extends PHPUnit\Framework\TestCase
 
         Flight::doesNotExist();
     }
+
+	public function testStaticRoute() {
+		Flight::route('/test', function() {
+			echo 'test';
+		});
+		Flight::request()->url = '/test';
+		Flight::start();
+
+		$this->expectOutputString('test');
+	}
+
+	public function testStaticRouteGroup() {
+		Flight::group('/group', function() {
+			Flight::route('/test', function() {
+				echo 'test';
+			});
+		});
+		Flight::request()->url = '/group/test';
+		Flight::start();
+
+		$this->expectOutputString('test');
+	}
 }

tests/RouterTest.php

@@ -358,4 +358,49 @@ class RouterTest extends PHPUnit\Framework\TestCase
 		$router->reset();
 		$this->assertEquals(0, $router->getIndex());
 	}
+
+	// Passing URL parameters
+    public function testGroupRoutes()
+    {
+		$this->router->group('/user', function(Router $router) {
+			$router->map('/@id', function ($id) {
+				echo $id;
+			});
+			$router->map('/@id/@name', function ($id, $name) {
+				echo $id . $name;
+			});
+		});
+        $this->request->url = '/user/123';
+        $this->check('123');
+    }
+
+	public function testGroupRoutesMultiParams()
+    {
+		$this->router->group('/user', function(Router $router) {
+			$router->map('/@id', function ($id) {
+				echo $id;
+			});
+			$router->map('/@id/@name', function ($id, $name) {
+				echo $id . $name;
+			});
+		});
+        $this->request->url = '/user/123/abc';
+        $this->check('123abc');
+    }
+
+	public function testGroupNestedRoutes()
+    {
+		$this->router->group('/client', function(Router $router) {
+			$router->group('/user', function(Router $router) {
+				$router->map('/@id', function ($id) {
+					echo $id;
+				});
+				$router->map('/@id/@name', function ($id, $name) {
+					echo $id . $name;
+				});
+			});
+		});
+        $this->request->url = '/client/user/123/abc';
+        $this->check('123abc');
+    }
 }