Add support for remote OVH cloud storage

app/uploaders/cerfa_uploader.rb

@@ -1,40 +1,28 @@
 # encoding: utf-8
 
 class CerfaUploader < CarrierWave::Uploader::Base
+  before :cache, :save_original_filename
 
-  # Include RMagick or MiniMagick support:
-  # include CarrierWave::RMagick
-  # include CarrierWave::MiniMagick
-
-  # Choose what kind of storage to use for this uploader:
-  storage :file
-  # storage :fog
+# Choose what kind of storage to use for this uploader:
+  if Features.remote_storage
+    storage :fog
+  else
+    storage :file
+  end
 
   # Override the directory where uploaded files will be stored.
   # This is a sensible default for uploaders that are meant to be mounted:
   def store_dir
-    "../uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+    if Features.remote_storage
+      nil
+    else
+      "../uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+    end
   end
 
-  # Provide a default URL as a default if there hasn't been a file uploaded:
-  # def default_url
-  #   # For Rails 3.1+ asset pipeline compatibility:
-  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
-  #
-  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
-  # end
-
-  # Process files as they are uploaded:
-  # process :scale => [200, 300]
-  #
-  # def scale(width, height)
-  #   # do something
-  # end
-
-  # Create different versions of your uploaded files:
-  # version :thumb do
-  #   process :resize_to_fit => [50, 50]
-  # end
+  def cache_dir
+    '/tmp/tps-cache'
+  end
 
   # Add a white list of extensions which are allowed to be uploaded.
   # For images you might use something like this:
@@ -42,10 +30,30 @@ class CerfaUploader < CarrierWave::Uploader::Base
     %w(pdf doc docx xls xlsx ppt pptx odt ods odp)
   end
 
-  # Override the filename of the uploaded files:
-  # Avoid using model.id or version_name here, see uploader/store.rb for details.
-  # def filename
-  #   "something.jpg" if original_filename
-  # end
+  def filename
+    if original_filename || model.content_secure_token
+      if Features.remote_storage
+        @filename = "#{model.class.to_s.underscore}-#{secure_token}.pdf"
+      else original_filename
+        @filename = "#{model.class.to_s.underscore}.pdf"
+      end
+    else
+      @filename = nil
+    end
+    @filename
+  end
 
+  private
+
+  def secure_token
+    model.content_secure_token ||= generate_secure_token
+  end
+
+  def generate_secure_token
+    SecureRandom.uuid
+  end
+
+  def save_original_filename(file)
+    model.original_filename ||= file.original_filename if file.respond_to?(:original_filename)
+  end
 end