Rake task to migrate config.yml to a dotenv file

lib/tasks/migrate_config.rake

@@ -0,0 +1,41 @@
+namespace :data do
+  namespace :migrate do
+    desc 'Create a dotenv file from config/config.yml'
+    task config2dotenv: :environment do
+      # Create the dotenv file
+      dot_env = Rails.root.join(".env.#{Rails.env}")
+      if File.exist?(dot_env)
+        abort("Sorry can't migrate, #{dot_env} already exists")
+      else
+        dot_env = File.open(dot_env, 'w')
+      end
+
+      # Load the configuration file
+      config_yml = Rails.root.join('config', 'config.yml')
+      begin
+        CONFIG = YAML.load_file(config_yml)[Rails.env]
+      rescue
+        CONFIG = {}
+      end
+
+      # Write the dotenv file
+      dot_env.puts '# OSEM environment variables. Check INSTALL.md for more information'
+      dot_env.puts "OSEM_NAME=\"#{CONFIG['name']}\""
+      dot_env.puts "OSEM_HOSTNAME=\"#{CONFIG['url_for_emails']}\""
+      dot_env.puts "OSEM_EMAIL_ADDRESS=\"#{CONFIG['sender_for_emails']}\""
+      dot_env.puts "OSEM_ICHAIN_ENABLED=\"#{CONFIG['authentication']['ichain']['enabled']}\"" if CONFIG.has_key?(:authentication)
+      dot_env.puts "OSEM_TRANSIFEX_APIKEY=\"#{CONFIG['transifex_live_api_key']}\""
+      dot_env.puts "OSEM_ERRBIT_HOST=\"#{CONFIG['errbit_host']}\""
+      dot_env.puts "OSEM_FACTORY_LINT=\"#{CONFIG['factory_girl_lint']}\""
+      dot_env.puts "OSEM_SMTP_ADDRESS=\"#{CONFIG['mail_address']}\""
+      dot_env.puts "OSEM_SMTP_PORT=\"#{CONFIG['mail_port']}\""
+      dot_env.puts "OSEM_SMTP_USERNAME=\"#{CONFIG['mail_username']}\""
+      dot_env.puts "OSEM_SMTP_PASSWORD=\"#{CONFIG['mail_password']}\""
+      dot_env.puts "OSEM_SMTP_AUTHENTICATION=\"#{CONFIG['mail_authentication']}\""
+      dot_env.puts 'OSEM_SMTP_DOMAIN=""'
+      dot_env.close
+
+      puts "Migrated config/config.yml to .env.#{Rails.env}"
+    end
+  end
+end