Save the asked questions, and show them at the end

lib/drill.rb

@@ -1,7 +1,7 @@
 require "rufus-scheduler"
 
 class Drill
-  attr_reader :responder, :current_question, :scheduler
+  attr_reader :responder, :current_question, :scheduler, :questions
   attr_accessor :length, :participants, :timer_job_id
 
   def initialize(responder: nil, scheduler: Rufus::Scheduler.new)
@@ -11,6 +11,7 @@ class Drill
     @running = false
     @scheduler = scheduler
     @time_is_up = false
+    @questions = []
   end
 
   def respond(response)
@@ -67,6 +68,7 @@ class Drill
     self.timer_job_id = scheduler.in(length){ @time_is_up = true }
     respond "Drill started!"
     participants.shuffle!
+    @questions = []
     next_question!
   end
 
@@ -89,7 +91,7 @@ class Drill
   end
 
   def handle_question_response(message)
-    if current_question.correct_answer == message.content
+    if current_question.answer message.content
       respond "Correct!"
     else
       respond "Incorrect: #{current_question.correct_answer}"
@@ -108,17 +110,22 @@ class Drill
   end
 
   def end_drill!
-    respond "Time's up! Everyone did great!"
+    respond "Lesson's over!"
+    questions.group_by(&:target).each do |target, target_questions|
+      correct_count = target_questions.select(&:correct?).count
+      total_count = target_questions.count
+      percentage = "#{((correct_count.to_f / total_count) * 100).to_i}%"
+      respond "#{target.display_name} got #{correct_count} out of #{total_count} correct (#{percentage})"
+    end
+
     @running = false
     @participants = []
   end
 
   def generate_question
-    value = (1..100).to_a.sample
-    @current_question = OpenStruct.new(
-      question_text: "Type the number #{value}",
-      correct_answer: value.to_s
-    )
+    q = Question.new current_question_target
+    questions << q
+    @current_question = q
   end
 
   def current_question_target
@@ -132,4 +139,26 @@ class Drill
   def time_is_up?
     @time_is_up
   end
+
+  class Question
+    attr_reader :question_text, :correct_answer, :target
+    attr_accessor :given_answer
+
+    def initialize(target)  # some kind of config here
+      @target = target
+
+      value = (1..100).to_a.sample
+      @question_text = "Type the number #{value}"
+      @correct_answer = value.to_s
+    end
+
+    def answer(response)
+      @given_answer = response
+      correct?
+    end
+
+    def correct?
+      given_answer == correct_answer
+    end
+  end
 end