Add orderline to order and calculate order total

Author: SelenaSmall

app.rb

@@ -1,13 +1,14 @@
 #!/usr/bin/ruby
 
+require_relative './lib/order'
 require_relative './lib/handle_input'
 
-command = HandleInput.new
-
-$stdout.print "Would you like to LIST available products, SHOP, VIEW basket, EXIT without placing an order? \n"
+command = HandleInput.new(Order.new)
 
 # Read user input
 loop do
+  $stdout.print "Would you like to LIST available products, SHOP, VIEW basket, EXIT without placing an order? \n"
+
   input = gets.chomp
 
   next if input.empty?

lib/handle_input.rb

@@ -1,11 +1,18 @@
 require_relative 'item'
+# require_relative 'order'
 require_relative 'order_line'
 
 # HandleInput class
 class HandleInput
+  attr_reader :order
+
   # Actions
   ACTIONS = %w[LIST SHOP VIEW EXIT].freeze
 
+  def initialize(order)
+    @order = order
+  end
+
   # Interpret method
   # @param command [String]
   # @return
@@ -18,7 +25,26 @@ def interpret(command)
       # list all availble items and package sizes
     end
 
-    return shop if command == 'SHOP'
+    # return shop if command == 'SHOP'
+    if command == 'SHOP'
+      $stdout.print "Select qty and items, example: 3 watermelon \n"
+
+      loop do
+        input = $stdin.gets.chomp
+
+        next if input.empty?
+
+        unless 'BACK'.match?(input)
+          shop(input)
+          next
+        end
+
+        $stdout.print "Returning to main menu \n"
+        break
+      end
+    end
+
+    # loop { shop if command == 'SHOP' }
 
     if command == 'VIEW'
       # show invoice
@@ -29,13 +55,8 @@ def interpret(command)
     end
   end
 
-  def shop
-    # retrieve another input
-    $stdout.print "Select qty and items, example: 3 watermelon \n"
-
-    input = $stdin.gets.chomp
-
-    return if input.empty? # TODO: OR if it doesn't match a specific order pattern
+  def shop(input)
+    # TODO: OR if it doesn't match a specific order pattern
 
     # break it down into qty, item
     line = input.split(/\W+/)
@@ -51,6 +72,14 @@ def shop
     # Present order_line for invoice
     order_line.present_line(product)
 
+    # order = Order.new
+
+    add_to_order = @order.add_item(order_line)
+
+    # puts add_to_order
+
+    puts order.find_order_total
+
     order_line
   end
 end

lib/order.rb

@@ -1,9 +1,21 @@
 # Order class
 class Order
-  attr_reader :items, :basket
+  attr_reader :items
 
-  def initialize(basket)
+  def initialize
     @items = []
-    @basket = basket
+  end
+
+  def add_item(order_item)
+    @items.push(order_item)
+  end
+
+  def find_order_total
+    total = 0
+    @items.each do |item|
+      total += item.total_quantity_of_items
+    end
+
+    total
   end
 end

lib/order_line.rb

@@ -71,12 +71,17 @@ def present_line(whole_packs)
       sub_total << k * i
     end
 
-    total = sub_total.inject(0) { |sum, x| sum + x }
+    @line_total = sub_total.inject(0) { |sum, x| sum + x }
 
-    puts "#{@order_qty} #{@order_item.name} #{total}"
+    puts "#{@order_qty} #{@order_item.name} #{@line_total}"
 
     sub_item.each do |s|
       puts s
     end
   end
+
+  def total_quantity_of_items
+    # @order_qty * @line_total
+    @line_total
+  end
 end

spec/handle_input_spec.rb

@@ -5,7 +5,7 @@
 describe HandleInput do
   describe '#interpret' do
     it 'should return nil unless command matches a value in ACTIONS array' do
-      instance = HandleInput.new
+      instance = HandleInput.new(Order.new)
 
       expect(instance.interpret('hello')).to be_nil
     end
@@ -17,9 +17,9 @@
     end
 
     it 'should return an instance of OrderLine' do
-      instance = HandleInput.new
+      instance = HandleInput.new(Order.new)
 
-      expect(instance.shop).to be_a OrderLine
+      expect(instance.shop('10 watermelon')).to be_a OrderLine
     end
   end
 end

spec/item_spec.rb

@@ -19,4 +19,12 @@
       expect(instance.packs('watermelon')).to be_a Array
     end
   end
+
+  describe '#packs' do
+    it 'should nil unless fruit is valid' do
+      instance = Item.new('Watermelons')
+
+      expect(instance.packs('hello')).to be_nil
+    end
+  end
 end

spec/order_spec.rb

@@ -4,17 +4,28 @@
 
 describe Order do
   describe '#initialize' do
-    it 'should have a items attribute which is an empty Array' do
-      instance = Order.new(Basket.new)
+    it 'should have an items attribute which is an empty Array' do
+      instance = Order.new
 
       expect(instance.items).to be_a Array
       expect(instance.items).to be_empty
     end
+  end
+
+  describe '#add_item' do
+    it 'should return an Array of items' do
+      instance = Order.new
+      orderline = OrderLine.new(10, Item.new('watermelon'))
+
+      expect(instance.add_item(orderline)).to be_a Array
+    end
+  end
 
-    it 'should have a basket attribute which is an instance of Basket' do
-      instance = Order.new(Basket.new)
+  describe '#find_order_total' do
+    it 'should return 0 if there are no items in the items array' do
+      instance = Order.new
 
-      expect(instance.basket).to be_a Basket
+      expect(instance.find_order_total).to eq 0
     end
   end
 end