4 files changed, 92 insertions, 0 deletions
diff --git a/src/Concerns/Strategy/ParsesStringParameters.php b/src/Concerns/Strategy/ParsesStringParameters.php
new file mode 100644
index 0000000..6dbc628
--- /dev/null
+++ b/src/Concerns/Strategy/ParsesStringParameters.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lightscale\Router\Concerns\Strategy;
+
+use InvalidArgumentException;
+
+trait ParsesStringParameters
+{
+    public function parseParameters(array $parameters): array
+    {
+        foreach ($parameters as $key => $value) {
+            if (!is_string($value)) {
+                throw new InvalidArgumentException("Parameter {$key} is not a string.");
+            }
+        }
+
+        return $parameters;
+    }
+}
diff --git a/src/Concerns/Strategy/RunsMiddleware.php b/src/Concerns/Strategy/RunsMiddleware.php
new file mode 100644
index 0000000..4816a04
--- /dev/null
+++ b/src/Concerns/Strategy/RunsMiddleware.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lightscale\Router\Concerns\Strategy;
+
+use Lightscale\Router\Contracts\Middleware;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+
+trait RunsMiddleware
+{
+    /**
+     * @param Middleware[] $middlewares
+     * @param callable(RequestInterface): ResponseInterface $handler
+     */
+    public function runMiddleware(
+        RequestInterface $request,
+        array $middlewares,
+        callable $handler,
+    ): ResponseInterface {
+        $handler = count($middlewares) > 0 ? array_reduce(
+            array_reverse($middlewares),
+            fn (callable $handler, Middleware $middleware) => fn (ServerRequestInterface $request) => $middleware->handle($request, $handler),
+            $handler
+        ) : $handler;
+
+        return $handler($request);
+    }
+}
diff --git a/src/Concerns/Strategy/RunsRoute.php b/src/Concerns/Strategy/RunsRoute.php
new file mode 100644
index 0000000..849ae80
--- /dev/null
+++ b/src/Concerns/Strategy/RunsRoute.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lightscale\Router\Concerns\Strategy;
+
+use Lightscale\Router\Exceptions\InvalidResponseException;
+use Lightscale\Router\RouteCall;
+use Psr\Http\Message\ResponseInterface;
+
+trait RunsRoute
+{
+    public function runRoute(RouteCall $call): ResponseInterface
+    {
+        $result = ($call->route->getHandler())($call);
+
+        if ($result instanceof ResponseInterface) {
+            return $result;
+        }
+
+        throw new InvalidResponseException();
+    }
+}
diff --git a/src/Concerns/Strategy/ThrowsNotFoundException.php b/src/Concerns/Strategy/ThrowsNotFoundException.php
new file mode 100644
index 0000000..996bdb5
--- /dev/null
+++ b/src/Concerns/Strategy/ThrowsNotFoundException.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lightscale\Router\Concerns\Strategy;
+
+use Lightscale\Router\Exceptions\NotFoundException;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+trait ThrowsNotFoundException
+{
+    public function notFound(RequestInterface $_): ResponseInterface
+    {
+        throw new NotFoundException();
+    }
+}