Exchange XMPP contacts when invitee signs up

app/services/create_account.rb

@@ -10,7 +10,11 @@ class CreateAccount < ApplicationService
   def call
     user = create_user_in_database
     add_ldap_document
-    update_invitation(user.id) if @invitation.present?
+
+    if @invitation.present?
+      update_invitation(user.id)
+      exchange_xmpp_contacts
+    end
   end
 
   private
@@ -57,4 +61,23 @@ class CreateAccount < ApplicationService
   def ldap_config
     ldap_config ||= YAML.load(ERB.new(File.read("#{Rails.root}/config/ldap.yml")).result)[Rails.env]
   end
+
+  def exchange_xmpp_contacts
+    #TODO enable in development when we have easy setup of ejabberd etc.
+    return if Rails.env.development?
+
+    ejabberd = EjabberdApiClient.new
+    inviter = @invitation.user
+
+    ejabberd.add_rosteritem({
+      "localuser": @username, "localhost": @domain,
+      "user": inviter.cn, "host": inviter.ou,
+      "nick": inviter.cn, "group": "Friends", "subs": "both"
+    })
+    ejabberd.add_rosteritem({
+      "localuser": inviter.cn, "localhost": inviter.ou,
+      "user": @username, "host": @domain,
+      "nick": @username, "group": "Friends", "subs": "both"
+    })
+  end
 end

app/services/ejabberd_api_client.rb

@@ -0,0 +1,20 @@
+class EjabberdApiClient
+  def initialize
+    @base_url = ENV["EJABBERD_API_URL"]
+  end
+
+  def post(endpoint, payload)
+    res = Faraday.post("#{@base_url}/#{endpoint}", payload,
+                       "Content-Type" => "application/json")
+
+    if res.status != 200
+      Rails.logger.error "[ejabberd] API request failed:"
+      Rails.logger.error res.body
+      #TODO add some kind of exception tracking/notifications
+    end
+  end
+
+  def add_rosteritem(payload)
+    post "add_rosteritem", payload
+  end
+end