Sam Button Takeaway Challenge

docs/SMS.rb

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+require 'twilio-ruby'
+
+class SMS
+
+  ETA = (Time.now + 3600).strftime("%H:%M")
+
+  attr_reader :sent, :phone_number
+
+  def initialize
+    @sent = false
+  end
+
+  def sms
+
+    @client = Twilio::REST::Client.new ENV['account Sid'], ENV['Auth token']
+    message = @client.messages.create(
+        body: "Thank you! Your order has been logged and will be with before #{ETA}",
+        to: "+my number",
+        from: ENV['+magic number'])
+
+    puts message.sid
+  end
+
+  def send_sms(phone_number)
+    @phone_number = phone_number
+    sms
+    @sent = true
+    sms_confirmation
+  end
+
+  def sent?
+    @sent
+  end
+
+  def sms_confirmation
+    "Confirmation message has been sent"
+  end
+end

docs/menu.rb

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+require './docs/order'
+
+class Menu
+
+  attr_reader :menu
+
+  def initialize
+    @menu = { 
+      "Guinness" => 6.00,
+      "Espresso Martini" => 12.50,
+      "Ruddles" => 1.99,
+      "Huel" => 3.00 }
+  end
+
+  def show_menu
+    @menu
+  end
+
+end

docs/order.rb

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+require './docs/menu' 
+require './docs/SMS'
+require 'rubygems'
+
+class Order
+
+  attr_reader :current_order
+
+  def initialize
+    @current_order = []
+    @new_menu = Menu.new
+    @order_price = 0
+  end
+
+  def add_to_basket(dish, quantity)
+    raise "Item not on the menu" unless @new_menu.menu.has_key?(dish)
+    quantity.times { @current_order << dish }
+  end
+
+  def calculate_price
+    price = 0
+
+    @current_order.each do |dish| 
+      if @new_menu.menu.has_key?(dish)
+        price += @new_menu.menu.fetch(dish)
+      end
+    end
+    @order_price + price
+  end
+
+  def complete_order(phone_number)
+    SMS.new.send_sms(phone_number)
+  end
+
+end

spec/SMS_spec.rb

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+require './docs/SMS'
+
+describe SMS do
+
+  subject(:sms) { described_class.new }
+
+  before do
+    allow(sms).to receive(:sms)
+  end
+
+  it 'sends a payment confirmation text message' do
+    sms.send_sms(ENV['my number'])
+  end
+
+  it 'confirms a message has been sent' do
+    expect(subject.sms_confirmation).to eq('Confirmation message has been sent')
+  end
+
+  it 'changes sent? to true after a message is sent' do
+    expect { subject.send_sms(ENV['my number']) }.to change(subject, :sent?).to true
+  end
+
+  describe '#send_sms' do
+    it "takes a phone number as an argument" do
+      expect(subject).to respond_to(:send_sms).with(1).argument
+    end
+  end
+end

spec/menu_spec.rb

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+require './docs/menu'
+
+describe Menu do
+  it 'responds to Menu class' do
+    expect(subject).to be_an_instance_of Menu
+  end
+
+  describe '#see menu' do
+    it 'returns the menu' do
+      expect(subject.show_menu).to eq({ "Espresso Martini" => 12.5, "Guinness" => 6.0, "Huel" => 3.0, "Ruddles" => 1.99 })
+    end
+  end
+end

spec/order_spec.rb

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+require './docs/order'
+
+describe Order do
+  let(:menu) { Menu.create }
+  let(:order) { Order.create }
+
+  it 'is an instance of Order class' do
+    expect(subject).to be_an_instance_of Order
+  end
+
+  it 'responds to add_to_basket' do
+    expect(subject).to respond_to :add_to_basket
+  end
+
+  describe '#add_to_order' do
+    context 'item is on the menu' do
+      it 'can add dishes to current order' do
+        subject.add_to_basket("Guinness", 1)
+        expect(subject.current_order).to eq(["Guinness"])
+      end
+
+      it 'can add multiple dishes at once' do
+        subject.add_to_basket("Guinness", 4)
+        expect(subject.current_order).to eq(["Guinness", "Guinness", "Guinness", "Guinness"])
+      end
+    end
+
+    context 'item is not on the menu' do
+      it 'returns "Item not on the menu"' do
+        expect { subject.add_to_basket("Chips", 1) }.to raise_error ("Item not on the menu")
+      end
+    end
+  end
+
+  describe '#calculate_price' do
+    it 'adds up the current order price' do
+      menu = Menu.new
+      subject.add_to_basket("Guinness", 2)
+      subject.add_to_basket("Huel", 1)
+      expect(subject.calculate_price).to eq(15)
+    end
+  end
+
+  describe '#complete_order' do
+    it 'completes the order' do
+      text = SMS.new
+      text.send_sms("my number")
+      expect(text).to respond_to(:complete_order)
+    end
+  end
+end