configuration block

Author: devpost-mzheng

lib/courrier.rb

@@ -1,7 +1,19 @@
 require "courrier/version"
 require "courrier/envelope"
 require "courrier/email"
+require "courrier/configuration"
 
 module Courrier
-  # Your code goes here...
+  class << self
+    attr_accessor :configuration
+
+    def configuration
+      @configuration ||= Configuration.new
+    end
+
+    def configure
+      yield configuration
+    end
+
+  end
 end

lib/courrier/configuration.rb

@@ -0,0 +1,5 @@
+module Courrier
+  class Configuration
+    attr_accessor :mailer
+  end
+end

lib/courrier/envelope.rb

@@ -4,8 +4,6 @@ class Envelope
 
     delegate :recipient, :payload, to: :email
 
-    class_attribute :mailer
-
     def initialize(email_name, attributes = {})
       @email_name, @attributes = email_name, attributes
     end
@@ -16,9 +14,9 @@ def deliver
 
         case recipient
         when User
-          mailer.transactional_email_to_user(*args)
+          Courrier.configuration.mailer.transactional_email_to_user(*args)
         else
-          mailer.transactional_email_to_address(*args)
+          Courrier.configuration.mailer.transactional_email_to_address(*args)
         end
         log args.inspect
       end