1 files changed, 37 insertions, 0 deletions
diff --git a/controllers/interfaces/eval.rb b/controllers/interfaces/eval.rb
new file mode 100644
index 0000000..6cb12b4
--- /dev/null
+++ b/controllers/interfaces/eval.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require 'pry'
+require 'rainbow'
+
+require_relative '../../logic/helpers/hash'
+
+module NanoBot
+  module Controllers
+    module Interfaces
+      module Eval
+        def self.evaluate(input, cartridge, session)
+          prefix = build_prefix(cartridge)
+          postfix = build_postfix(cartridge)
+
+          session.print(prefix) unless prefix.nil?
+
+          session.evaluate_and_print(input, mode: 'eval')
+
+          session.print(postfix) unless postfix.nil?
+        end
+
+        def self.build_prefix(cartridge)
+          eval_interface =  Logic::Helpers::Hash.fetch(cartridge, %i[interfaces eval])
+          return nil if eval_interface.nil?
+          eval_interface[:prefix]
+        end
+
+        def self.build_postfix(cartridge)
+          eval_interface =  Logic::Helpers::Hash.fetch(cartridge, %i[interfaces eval])
+          return "\n" if eval_interface.nil? || !eval_interface.key?(:postfix) # default
+          eval_interface[:postfix]
+        end
+      end
+    end
+  end
+end