Configure Active Storage

We are re-using the same config used for Paperclip except for disk
storage. Active Storage uses directory sharding on the local disk which
means that we can't create blob entries that point to the existing
Paperclip files. We will just copy them to the standard `storage/`
directory.

.gitignore

@@ -15,6 +15,7 @@ db/*.csv
 log/*.log
 log/*.log.lck
 log/*.log.*
+/storage
 tmp/
 .idea/*
 \#*

config/application.rb

@@ -238,5 +238,7 @@ module Openfoodnetwork
     Rails.application.routes.default_url_options[:host] = ENV["SITE_URL"]
 
     Rails.autoloaders.main.ignore(Rails.root.join('app/webpacker'))
+
+    config.active_storage.service = ENV["S3_BUCKET"].present? ? :amazon : :local
   end
 end

config/environments/test.rb

@@ -51,4 +51,6 @@ Openfoodnetwork::Application.configure do
   config.active_support.deprecation = :stderr
 
   config.active_job.queue_adapter = :test
+
+  config.active_storage.service = :test
 end

config/storage.yml

@@ -0,0 +1,14 @@
+local:
+  service: Disk
+  root: <%= Rails.root.join("storage") %>
+
+test:
+  service: Disk
+  root: <%= Rails.root.join("tmp/storage") %>
+
+amazon:
+  service: S3
+  access_key_id: <%= ENV["S3_ACCESS_KEY"] %>
+  secret_access_key: <%= ENV["S3_SECRET"] %>
+  bucket: <%= ENV["S3_BUCKET"] %>
+  region: <%= ENV.fetch("S3_REGION", "us-east-1") %>