added encoder for billing request

.gitignore

@@ -11,6 +11,6 @@
 /config/deploy.rb
 /config/master.key
 /.idea
-
+/config/master.key
 # Do not commit one. Instead, download the latest from https://github.com/internetee/style-guide.
 .rubocop.yml

app/services/eis_billing/base.rb

@@ -1,16 +1,7 @@
 module EisBilling
   class Base
-    BASE_URL = ''
-    if Rails.env.staging?
-      BASE_URL = ENV['eis_billing_system_base_url_staging']
-    else
-      BASE_URL = ENV['eis_billing_system_base_url_dev']
-    end
-
-    INITIATOR = 'registry'
-
-    SECRET_WORD = ENV['secret_word']
-    SECRET_ACCESS_WORD = ENV['secret_access_word']
+    BASE_URL = ENV['eis_billing_system_base_url']
+    INITIATOR = 'registry'.freeze
 
     def self.base_request(url:)
       uri = URI(url)
@@ -25,11 +16,11 @@ module EisBilling
     end
 
     def self.generate_token
-      JWT.encode(payload, SECRET_WORD )
+      JWT.encode(payload, billing_secret)
     end
 
     def self.payload
-      { data: SECRET_ACCESS_WORD }
+      { initiator: INITIATOR }
     end
 
     def self.headers
@@ -38,5 +29,9 @@ module EisBilling
         'Content-Type' => 'application/json'
       }
     end
+
+    def self.billing_secret
+      Rails.application.credentials.config[:billing_secret]
+    end
   end
 end

config/credentials.yml.enc

@@ -0,0 +1 @@
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