[develop] Improves health checker (#171)

* Improves `vapor:health-check` command

* Apply fixes from StyleCI

* Update VaporHealthCheckCommand.php

---------

Co-authored-by: StyleCI Bot <bot@styleci.io>
Co-authored-by: Taylor Otwell <taylorotwell@gmail.com>

src/Console/Commands/VaporHealthCheckCommand.php

@@ -2,7 +2,10 @@
 
 namespace Laravel\Vapor\Console\Commands;
 
+use Exception;
 use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Str;
 
 class VaporHealthCheckCommand extends Command
 {
@@ -34,6 +37,40 @@ class VaporHealthCheckCommand extends Command
      */
     public function handle()
     {
+        $this->ensureBaseConfigurationFilesWereHarmonized();
+
+        $this->ensureCacheIsWorking();
+
         return $this->info('Health check complete!');
     }
+
+    /**
+     * Ensure the configuration files were harmonized.
+     *
+     * @return void
+     */
+    protected function ensureBaseConfigurationFilesWereHarmonized()
+    {
+        if (! file_exists($filename = __DIR__.'/../../../../framework/config/cache.php')) {
+            return;
+        }
+
+        $configuration = file_get_contents($filename);
+
+        if (! Str::contains($configuration, "'key' => env('NULL_AWS_ACCESS_KEY_ID')")) {
+            throw new Exception(
+                'Laravel 11 or later requires the latest version of Vapor CLI.'
+            );
+        }
+    }
+
+    /**
+     * Ensure cache calls are working as expected.
+     *
+     * @return void
+     */
+    protected function ensureCacheIsWorking()
+    {
+        Cache::get('vapor-health-check');
+    }
 }