Basic RPS program - JM

app.rb

@@ -1,8 +1,57 @@
 require 'sinatra/base'
+
 class RockPaperScissors < Sinatra::Base
+
+  get '/' do
+    erb(:index)
+  end
+
   get '/test' do
     'test page'
   end
 
+  post '/game' do
+    @name = params[:name]
+    erb(:game)
+  end
+
+  post '/result' do
+    @user_choice = params[:choice]
+    @opponent_choice = [:rock, :paper, :scissors].sample
+    @result = pick_winner(@user_choice, @opponent_choice)
+    erb(:result)
+  end
+
+  def pick_winner(player, opponent)
+    case player
+    when "rock"
+      if(opponent == :scissors)
+        return "You win!"
+      elsif(opponent == :rock)
+        return "It's a tie!"
+      else
+        return "You lose :("
+      end
+    when "paper"
+      if(opponent == :rock)
+        return "You win!"
+      elsif(opponent == :paper)
+        return "It's a tie!"
+      else
+        return "You lose :("
+      end
+    when "scissors"
+      if(opponent == :paper)
+        return "You win!"
+      elsif(opponent == :scissors)
+        return "It's a tie!"
+      else
+        return "You lose :("
+      end
+    else
+      return "Invalid input."
+    end
+  end
+
   run! if app_file == $0
-end
+end

spec/features/game_page_spec.rb

@@ -0,0 +1,10 @@
+feature 'Playing RPS' do
+  scenario "When I select 'Rock', I will lose if the machine selects 'Paper'" do
+    allow_any_instance_of(@opponent_choice).to receive(:sample).and_return(:paper)
+    visit '/'
+    fill_in('name', with: 'Jordan')
+    click_button('Submit')
+    click_button('Rock')
+    expect(page).to have_content "You lose :("
+  end
+end

spec/features/name_page_spec.rb

@@ -0,0 +1,8 @@
+feature 'Entering username' do
+  scenario "When I enter Jordan, the next page will include my name" do
+    visit '/'
+    fill_in('name', with: 'Jordan')
+    click_button('Submit')
+    expect(page).to have_content "Hello Jordan. Choose one of the options below to play!"
+  end
+end

views/game.erb

@@ -0,0 +1,8 @@
+<h1>Hello <%= @name %>. Choose one of the options below to play!</h1>
+
+
+<form action="/result" method="post">
+  <button name="choice" type="submit" value="rock" >Rock</button>
+  <button name="choice" type="submit" value="paper">Paper</button>
+  <button name="choice" type="submit" value="scissors">Scissors</button>
+</form>

views/index.erb

@@ -0,0 +1,7 @@
+<h1>Welcome to Rock, Paper, Scissors. Please enter your username!</h1>
+
+<form action="/game" method="post">
+  <label for="name">Name:</label>
+  <input type="text" name="name"/>
+  <button type="submit" name="submit">Submit</button>
+</form>

views/result.erb

@@ -0,0 +1,7 @@
+<h1><%= @result %></h1>
+
+<h2>You picked <%= @user_choice %>, and your opponent picked <%= @opponent_choice %></h2>
+
+<form action="/" method="get">
+  <button type="submit">Play Again!</button>
+</form>