Allow configuring the disk's visibility and cache as with S3 (#32)

* Configure filesystem with 'visibility', 'disable_asserts' and 'url' options

* Add 'visibility' option to readme

README.md

@@ -37,6 +37,7 @@ Add a new disk to your `filesystems.php` config
     'bucket' => env('GOOGLE_CLOUD_STORAGE_BUCKET', 'your-bucket'),
     'path_prefix' => env('GOOGLE_CLOUD_STORAGE_PATH_PREFIX', null), // optional: /default/path/to/apply/in/bucket
     'storage_api_uri' => env('GOOGLE_CLOUD_STORAGE_API_URI', null), // see: Public URLs below
+    'visibility' => 'public', // optional: public|private
 ],
 ```
 

src/GoogleCloudStorageServiceProvider.php

@@ -4,12 +4,35 @@
 
 use Google\Cloud\Storage\StorageClient;
 use Illuminate\Filesystem\FilesystemManager;
+use Illuminate\Support\Arr;
 use Illuminate\Support\ServiceProvider;
+use League\Flysystem\AdapterInterface;
+use League\Flysystem\Cached\CachedAdapter;
 use League\Flysystem\Filesystem;
 use Superbalist\Flysystem\GoogleStorage\GoogleStorageAdapter;
 
 class GoogleCloudStorageServiceProvider extends ServiceProvider
 {
+    /**
+     * Create a Filesystem instance with the given adapter.
+     *
+     * @param  \League\Flysystem\AdapterInterface  $adapter
+     * @param  array  $config
+     * @return \League\Flysystem\FlysystemInterfaceAdapterInterface
+     */
+    protected function createFilesystem(AdapterInterface $adapter, array $config)
+    {
+        $cache = Arr::pull($config, 'cache');
+
+        $config = Arr::only($config, ['visibility', 'disable_asserts', 'url']);
+
+        if ($cache) {
+            $adapter = new CachedAdapter($adapter, $this->createCacheStore($cache));
+        }
+
+        return new Filesystem($adapter, count($config) > 0 ? $config : null);
+    }
+
     /**
      * Perform post-registration booting of services.
      */
@@ -27,10 +50,11 @@ public function boot()
 
             $adapter = new GoogleStorageAdapter($storageClient, $bucket, $pathPrefix, $storageApiUri);
 
-            return new Filesystem($adapter);
+            return $this->createFilesystem($adapter, $config);
         });
     }
 
+
     /**
      * Register bindings in the container.
      */