chore: Add controllers for conversation participants (#6462)

Co-authored-by: Aswin Dev P.S <aswindevps@gmail.com>
Co-authored-by: Sojan Jose <sojan@chatwoot.com>

app/models/concerns/assignment_handler.rb

@@ -4,7 +4,7 @@ module AssignmentHandler
 
   included do
     before_save :ensure_assignee_is_from_team
-    after_commit :notify_assignment_change, :process_assignment_activities
+    after_commit :notify_assignment_change, :process_assignment_changes
   end
 
   private
@@ -36,6 +36,11 @@ module AssignmentHandler
     end
   end
 
+  def process_assignment_changes
+    process_assignment_activities
+    process_participant_assignment
+  end
+
   def process_assignment_activities
     user_name = Current.user.name if Current.user.present?
     if saved_change_to_team_id?
@@ -44,4 +49,10 @@ module AssignmentHandler
       create_assignee_change_activity(user_name)
     end
   end
+
+  def process_participant_assignment
+    return unless saved_change_to_assignee_id? && assignee_id.present?
+
+    conversation_participants.find_or_create_by!(user_id: assignee_id)
+  end
 end

app/models/concerns/user_attribute_helpers.rb

@@ -0,0 +1,53 @@
+module UserAttributeHelpers
+  extend ActiveSupport::Concern
+
+  def available_name
+    self[:display_name].presence || name
+  end
+
+  def availability_status
+    current_account_user&.availability_status
+  end
+
+  def auto_offline
+    current_account_user&.auto_offline
+  end
+
+  def inviter
+    current_account_user&.inviter
+  end
+
+  def active_account_user
+    account_users.order(active_at: :desc)&.first
+  end
+
+  def current_account_user
+    # We want to avoid subsequent queries in case where the association is preloaded.
+    # using where here will trigger n+1 queries.
+    account_users.find { |ac_usr| ac_usr.account_id == Current.account.id } if Current.account
+  end
+
+  def account
+    current_account_user&.account
+  end
+
+  def administrator?
+    current_account_user&.administrator?
+  end
+
+  def agent?
+    current_account_user&.agent?
+  end
+
+  def role
+    current_account_user&.role
+  end
+
+  # Used internally for Chatwoot in Chatwoot
+  def hmac_identifier
+    hmac_key = GlobalConfig.get('CHATWOOT_INBOX_HMAC_KEY')['CHATWOOT_INBOX_HMAC_KEY']
+    return OpenSSL::HMAC.hexdigest('sha256', hmac_key, email) if hmac_key.present?
+
+    ''
+  end
+end