Import Action Mailbox

1 files changed, 40 insertions, 0 deletions

diff --git a/actionmailbox/lib/action_mailbox/router.rb b/actionmailbox/lib/action_mailbox/router.rb
new file mode 100644
index 0000000000..0f041a8389
--- /dev/null
+++ b/actionmailbox/lib/action_mailbox/router.rb
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+# frozen_string_literal: true
+
+# Encapsulates the routes that live on the ApplicationMailbox and performs the actual routing when
+# an inbound_email is received.
+class ActionMailbox::Router
+  class RoutingError < StandardError; end
+
+  def initialize
+    @routes = []
+  end
+
+  def add_routes(routes)
+    routes.each do |(address, mailbox_name)|
+      add_route address, to: mailbox_name
+    end
+  end
+
+  def add_route(address, to:)
+    routes.append Route.new(address, to: to)
+  end
+
+  def route(inbound_email)
+    if mailbox = match_to_mailbox(inbound_email)
+      mailbox.receive(inbound_email)
+    else
+      inbound_email.bounced!
+
+      raise RoutingError
+    end
+  end
+
+  private
+    attr_reader :routes
+
+    def match_to_mailbox(inbound_email)
+      routes.detect { |route| route.match?(inbound_email) }.try(:mailbox_class)
+    end
+end
+
+require "action_mailbox/router/route"