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app/src/Middleware/CacheMiddleware.php

@@ -0,0 +1,33 @@
+<?php declare(strict_types=1);
+
+namespace Lubian\NoFramework\Middleware;
+
+use Laminas\Diactoros\Response;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Cache\ItemInterface;
+
+final class CacheMiddleware implements MiddlewareInterface
+{
+    public function __construct(private CacheInterface $cache){}
+
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        if ($request->getMethod() === 'GET') {
+            $key = (string) $request->getUri();
+            $key = base64_encode($key);
+            $callback = fn () => $handler->handle($request);
+            $response = new Response();
+            $body = $this->cache->get($key, function (ItemInterface $item) use ($callback) {
+                $item->expiresAfter(120);
+                return (string) $callback()->getBody();
+            });
+            $response->getBody()->write($body);
+            return $response;
+        }
+        return $handler->handle($request);
+    }
+}