1 files changed, 39 insertions, 0 deletions
diff --git a/rubocop/cop/code_reuse/service_class.rb b/rubocop/cop/code_reuse/service_class.rb
new file mode 100644
index 00000000000..768b43fb684
--- /dev/null
+++ b/rubocop/cop/code_reuse/service_class.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require_relative '../../code_reuse_helpers.rb'
+
+module RuboCop
+  module Cop
+    module CodeReuse
+      # Cop that enforces various code reuse rules for Service classes.
+      class ServiceClass < RuboCop::Cop::Cop
+        include CodeReuseHelpers
+
+        IN_FINDER = 'Service classes can not be used in a Finder.'
+        IN_PRESENTER = 'Service classes can not be used in a Presenter.'
+        IN_SERIALIZER = 'Service classes can not be used in a Serializer.'
+        IN_MODEL = 'Service classes can not be used in a model.'
+        SUFFIX = 'Service'
+
+        def on_class(node)
+          check_all_send_nodes(node)
+        end
+
+        def check_all_send_nodes(node)
+          message =
+            if in_finder?(node)
+              IN_FINDER
+            elsif in_presenter?(node)
+              IN_PRESENTER
+            elsif in_serializer?(node)
+              IN_SERIALIZER
+            elsif in_model?(node)
+              IN_MODEL
+            end
+
+          disallow_send_to(node, SUFFIX, message) if message
+        end
+      end
+    end
+  end
+end