Add Cache Control middleware for #3479

app/Http/Kernel.php

@@ -15,6 +15,7 @@ use Barryvdh\Cors\HandleCors;
 use CachetHQ\Cachet\Http\Middleware\Admin;
 use CachetHQ\Cachet\Http\Middleware\ApiAuthentication;
 use CachetHQ\Cachet\Http\Middleware\Authenticate;
+use CachetHQ\Cachet\Http\Middleware\CacheControl;
 use CachetHQ\Cachet\Http\Middleware\Localize;
 use CachetHQ\Cachet\Http\Middleware\ReadyForUse;
 use CachetHQ\Cachet\Http\Middleware\RedirectIfAuthenticated;
@@ -47,6 +48,7 @@ class Kernel extends HttpKernel
         'admin'       => Admin::class,
         'can'         => Authorize::class,
         'cors'        => HandleCors::class,
+        'cache'       => CacheControl::class,
         'auth'        => Authenticate::class,
         'auth.api'    => ApiAuthentication::class,
         'guest'       => RedirectIfAuthenticated::class,

app/Http/Middleware/CacheControl.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+
+class CacheControl
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle(Request $request, Closure $next)
+    {
+        $response = $next($request);
+
+        $maxAge = time() + 30;
+
+        $response->header('Cache-Control', 'public,max-age='.$maxAge);
+
+        return $response;
+    }
+}

app/Http/Routes/ApiSystemRoutes.php

@@ -43,7 +43,7 @@ class ApiSystemRoutes
             $router->group(['middleware' => ['auth.api']], function (Registrar $router) {
                 $router->get('ping', 'GeneralController@ping');
                 $router->get('version', 'GeneralController@version');
-                $router->get('status', 'GeneralController@status');
+                $router->get('status', ['uses' => 'GeneralController@status', 'middleware' => ['cache']]);
             });
         });
     }