Add main.rb with methods

main.rb

@@ -0,0 +1,47 @@
+class Main
+
+  def process_selection(selection) # rubocop:disable Metrics/CyclomaticComplexity
+    case selection
+    when '1'
+      puts "option 1 selected"
+    when '2'
+      puts "option 2 selected"
+    when '3'
+      puts "option 3 selected"
+    when '4'
+      puts "option 4 selected"
+    when '5'
+      puts "option 5 selected"
+    when '6'
+      puts "option 6 selected"
+    when '7'
+      puts "option 7 selected"
+    when '8'
+      puts "option 8 selected"
+    when '9' then "Have a nice day"
+    else
+      puts 'Invalid selection'
+    end
+  end
+
+  def interface
+    selection = nil
+    until selection == '9'
+      puts "Welcome to Catalog App!\n\n"
+      puts 'Please choose an option by entering a number:'
+      puts '1 - List all books'
+      puts '2 - List all music albums'
+      puts '3 - List all movies'
+      puts '4 - List all games'
+      puts '5 - Create a book'
+      puts '6 - Create a music album'
+      puts '7 - Create a movie'
+      puts '8 - Create a game'
+      puts '9 - Exit'
+      selection = gets.chomp.to_s
+      process_selection(selection)
+    end
+    puts "Have a great day!"
+  end
+end
+