Send Salmon interactions

app/services/send_interaction_service.rb

@@ -0,0 +1,29 @@
+class SendInteractionService < BaseService
+  include AtomHelper
+
+  # Send an Atom representation of an interaction to a remote Salmon endpoint
+  # @param [StreamEntry] stream_entry
+  # @param [Account] target_account
+  def call(stream_entry, target_account)
+    envelope = salmon.pack(entry_xml(stream_entry), target_account.keypair)
+    salmon.post(target_account.salmon_url, envelope)
+  end
+
+  private
+
+  def entry_xml(stream_entry)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        author(xml) do
+          include_author xml, stream_entry.account
+        end
+
+        include_entry xml, stream_entry
+      end
+    end.to_xml
+  end
+
+  def salmon
+    @salmon ||= OStatus2::Salmon.new
+  end
+end