feat: API to add label to contacts (#1563)

app/controllers/api/v1/accounts/contacts/labels_controller.rb

@@ -0,0 +1,13 @@
+class Api::V1::Accounts::Contacts::LabelsController < Api::V1::Accounts::BaseController
+  include LabelConcern
+
+  private
+
+  def model
+    @model ||= Current.account.contacts.find(params[:contact_id])
+  end
+
+  def permitted_params
+    params.permit(:contact_id, :labels)
+  end
+end

app/controllers/api/v1/accounts/conversations/labels_controller.rb

@@ -1,11 +1,13 @@
 class Api::V1::Accounts::Conversations::LabelsController < Api::V1::Accounts::Conversations::BaseController
-  def create
-    @conversation.update_labels(params[:labels])
-    @labels = @conversation.label_list
+  include LabelConcern
+
+  private
+
+  def model
+    @model ||= @conversation
   end
 
-  # all labels of the current conversation
-  def index
-    @labels = @conversation.label_list
+  def permitted_params
+    params.permit(:conversation_id, :labels)
   end
 end

app/controllers/concerns/label_concern.rb

@@ -0,0 +1,10 @@
+module LabelConcern
+  def create
+    model.update_labels(permitted_params[:labels])
+    @labels = model.label_list
+  end
+
+  def index
+    @labels = model.label_list
+  end
+end