change message gateway to save received email as attachment to the todo

app/models/message_gateway.rb

@@ -1,3 +1,5 @@
+require 'tempfile'
+
 class MessageGateway < ActionMailer::Base
 
   def receive(email)
@@ -10,8 +12,26 @@ class MessageGateway < ActionMailer::Base
 
     todo_builder = TodoFromRichMessage.new(user, context.id, todo_params[:description], todo_params[:notes])
     todo = todo_builder.construct
-    todo.save!
-    Rails.logger.info "Saved email as todo for user #{user.login} in context #{context.name}"
+
+    saved = todo.save!
+
+    if saved
+      Rails.logger.info "Saved email as todo for user #{user.login} in context #{context.name}"
+
+      attachment = todo.attachments.build
+      tmp = Tempfile.new(['attachment', '.eml'], cr_newline: false)
+      tmp.write email.raw_source.gsub(/\r\n?/, "\n")  # replace \r with \n
+      Rails.logger.info "Saved received email to #{tmp.path}"
+      attachment.file = tmp
+      tmp.close
+      saved = attachment.save!
+      tmp.unlink
+
+      if saved 
+        Rails.logger.info "Saved email as todo for user #{user.login} in context #{context.name}"
+      end
+    end
+
     todo
   end
 

config/initializers/paperclip.rb

@@ -0,0 +1,10 @@
+#config/initilizers/paperclip.rb
+require 'paperclip/media_type_spoof_detector'
+
+module Paperclip
+  class MediaTypeSpoofDetector
+    def spoofed?
+      false
+    end
+  end
+end

config/routes.rb

@@ -90,6 +90,7 @@ Rails.application.routes.draw do
       get 'convert_to_project' # TODO: convert to PUT/POST
       delete 'remove_predecessor' # TODO: convert to PUT/POST
       post 'change_context'
+      get 'attachment'
     end
     collection do
       get 'done'

test/controllers/message_gateway_test.rb

@@ -83,4 +83,22 @@ class MessageGatewayTest < ActiveSupport::TestCase
     assert_not_nil(invalid_context_todo)
     assert_equal(@inbox, invalid_context_todo.context)
   end
+
+  def test_receiving_email_adds_attachment
+    attachment_count = Attachment.count
+
+    load_message('sample_mms.txt')
+
+    message_todo = Todo.where(:description => "This is the subject").first
+    assert_not_nil(message_todo)
+
+    assert_equal attachment_count+1, Attachment.count
+    assert_equal 1,message_todo.attachments.count
+
+    orig = File.read(File.join(Rails.root, 'test', 'fixtures', 'sample_mms.txt'))
+    attachment = File.read(message_todo.attachments.first.file.path)
+
+    assert_equal orig, attachment
+  end
+
 end