fix: active storage links for attachments (#1045)

* add foodcoop scope to activestorage generated secret

---------

Co-authored-by: Philipp Rothmann <philipprothmann@posteo.de>

config/initializers/active_storage_foodcoop_path.rb

@@ -1,15 +1,52 @@
 require 'active_storage/service/disk_service'
 
+module FoodsoftActiveStorageDiskController
+  def self.included(base) # :nodoc:
+    base.class_eval do
+      def show
+        if key = decode_verified_key
+          FoodsoftConfig.select_foodcoop(key[:scope])
+          serve_file named_disk_service(key[:service_name]).path_for(key[:key]), content_type: key[:content_type], disposition: key[:disposition]
+        else
+          head :not_found
+        end
+      rescue Errno::ENOENT
+        head :not_found
+      end
+    end
+  end
+end
+
 module FoodsoftActiveStorageDiskService
   def self.included(base) # :nodoc:
     base.class_eval do
       def path_for(key)
         File.join root, FoodsoftConfig.scope, folder_for(key), key
       end
+
+      def generate_url(key, expires_in:, filename:, content_type:, disposition:)
+        content_disposition = content_disposition_with(type: disposition, filename: filename)
+        verified_key_with_expiration = ActiveStorage.verifier.generate(
+          {
+            key: key,
+            scope: FoodsoftConfig.scope,
+            disposition: content_disposition,
+            content_type: content_type,
+            service_name: name
+          },
+          expires_in: expires_in,
+          purpose: :blob_key
+        )
+
+        raise ArgumentError, "Cannot generate URL for #{filename} using Disk service, please set ActiveStorage::Current.url_options." if url_options.blank?
+
+        url_helpers.rails_disk_service_url(verified_key_with_expiration, filename: filename, **url_options)
+      end
     end
   end
 end
 
 ActiveSupport.on_load(:after_initialize) do
   ActiveStorage::Service::DiskService.include FoodsoftActiveStorageDiskService
+  ActiveStorage::DiskController.include FoodsoftActiveStorageDiskController
 end