Feature: user can see empty cart

.gitignore

@@ -5,3 +5,4 @@ spec/dummy/db/*.sqlite3
 spec/dummy/db/*.sqlite3-journal
 spec/dummy/log/*.log
 spec/dummy/tmp/
+.ruby-gemset

.rspec

@@ -0,0 +1,2 @@
+--color
+--require spec_helper

.ruby-version

@@ -0,0 +1 @@
+2.3.1

Gemfile.lock

@@ -0,0 +1,126 @@
+PATH
+  remote: .
+  specs:
+    shopping_cart (0.1.0)
+      aasm
+      haml
+      pg
+      rails (~> 5.0.0, >= 5.0.0.1)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    aasm (4.11.0)
+    actioncable (5.0.0.1)
+      actionpack (= 5.0.0.1)
+      nio4r (~> 1.2)
+      websocket-driver (~> 0.6.1)
+    actionmailer (5.0.0.1)
+      actionpack (= 5.0.0.1)
+      actionview (= 5.0.0.1)
+      activejob (= 5.0.0.1)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.0.0.1)
+      actionview (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      rack (~> 2.0)
+      rack-test (~> 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (5.0.0.1)
+      activesupport (= 5.0.0.1)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (5.0.0.1)
+      activesupport (= 5.0.0.1)
+      globalid (>= 0.3.6)
+    activemodel (5.0.0.1)
+      activesupport (= 5.0.0.1)
+    activerecord (5.0.0.1)
+      activemodel (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      arel (~> 7.0)
+    activesupport (5.0.0.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    arel (7.1.1)
+    builder (3.2.2)
+    concurrent-ruby (1.0.2)
+    erubis (2.7.0)
+    globalid (0.3.7)
+      activesupport (>= 4.1.0)
+    haml (4.0.7)
+      tilt
+    i18n (0.7.0)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.4)
+      mime-types (>= 1.16, < 4)
+    method_source (0.8.2)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.1.0)
+    minitest (5.9.0)
+    nio4r (1.2.1)
+    nokogiri (1.6.8)
+      mini_portile2 (~> 2.1.0)
+      pkg-config (~> 1.1.7)
+    pg (0.18.4)
+    pkg-config (1.1.7)
+    rack (2.0.1)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (5.0.0.1)
+      actioncable (= 5.0.0.1)
+      actionmailer (= 5.0.0.1)
+      actionpack (= 5.0.0.1)
+      actionview (= 5.0.0.1)
+      activejob (= 5.0.0.1)
+      activemodel (= 5.0.0.1)
+      activerecord (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 5.0.0.1)
+      sprockets-rails (>= 2.0.0)
+    rails-dom-testing (2.0.1)
+      activesupport (>= 4.2.0, < 6.0)
+      nokogiri (~> 1.6.0)
+    rails-html-sanitizer (1.0.3)
+      loofah (~> 2.0)
+    railties (5.0.0.1)
+      actionpack (= 5.0.0.1)
+      activesupport (= 5.0.0.1)
+      method_source
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (11.2.2)
+    sprockets (3.7.0)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.1.1)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    tilt (2.0.5)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    websocket-driver (0.6.4)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  shopping_cart!
+
+BUNDLED WITH
+   1.12.5

app/controllers/shopping_cart/orders_controller.rb

@@ -0,0 +1,47 @@
+module ShoppingCart
+  class OrdersController < ApplicationController
+    # before_action :set_order, only: [:update, :destroy]
+
+    # decorates_assigned :order
+
+    # def index
+    #   @orders = current_customer.orders
+    # end
+    #
+    # def show
+    #   @order = Order.with_books.find_by(id: params[:id])
+    #   back_to_shop('Order') unless @order
+    # end
+
+    def edit
+      # @order = current_customer.orders.in_progress.decorate.first
+      @order = ShoppingCart::Order.where(user_id: current_user.id).in_progress.first
+    end
+
+    # def update
+    #   UpdateOrder.call(@order, params) do
+    #     on(:ok)      { updated_notice('Order') }
+    #     on(:invalid) { update_error('Order') }
+    #   end
+    #   redirect_to cart_path
+    # end
+    #
+    # def destroy
+    #   @order.destroy ? deleted_notice('Order') : delete_error('Order')
+    #   redirect_to cart_path
+    # end
+    #
+    # def create
+    #   CreateOrder.call(params) do
+    #     on(:ok)       { redirect_to cart_path }
+    #     on(:invalid)  { add_book_failed }
+    #   end
+    # end
+
+    # private
+
+    # def set_order
+    #   @order = Order.find_by_id params[:id]
+    # end
+  end
+end

app/models/shopping_cart/order.rb

@@ -0,0 +1,75 @@
+require 'aasm'
+
+module ShoppingCart
+  class Order < ApplicationRecord
+    # has_many   :order_items, dependent: :destroy
+    # belongs_to :customer
+    # belongs_to :credit_card
+    # belongs_to :delivery
+    # has_one :coupon, dependent: :destroy
+    # has_one :order_shipping,
+    #         -> { where addressable_type: 'order_shipping' },
+    #         class_name: Address, foreign_key: :addressable_id,
+    #         dependent: :destroy
+    # has_one :order_billing,
+    #         -> { where addressable_type: 'order_billing' },
+    #         class_name: Address, foreign_key: :addressable_id,
+    #         dependent: :destroy
+
+    # accepts_nested_attributes_for :order_items, allow_destroy: true
+    #
+    # after_validation :update_total
+
+    include AASM
+    # attr_accessor :active_admin_requested_event
+    aasm column: :state, whiny_transitions: false do
+      state :in_progress, initial: true
+      state :processing
+      state :in_delivery
+      state :delivered
+      state :canceled
+
+      event :completed do
+        transitions from: :in_progress, to: :processing
+      end
+
+      event :sent_to_client do
+        transitions from: :processing, to: :in_delivery
+      end
+
+      event :delivered do
+        transitions from: :in_delivery, to: :delivered
+      end
+
+      event :canceled do
+        transitions from: [:processing, :in_delivery], to: :canceled
+      end
+    end
+
+  #   scope :with_books, -> { includes(order_items: :book) }
+  #
+  #   def add_item(book_id, quantity = 1)
+  #     item = order_items.find_by(book_id: book_id)
+  #     if item
+  #       item.update_amount(quantity)
+  #     else
+  #       order_items.create(quantity: quantity, book_id: book_id)
+  #     end
+  #   end
+  #
+  #   def update_total
+  #     return if errors.any?
+  #     new_total = order_items.map(&:item_total).sum
+  #     new_total -= (new_total * coupon.discount / 100) if coupon
+  #     self.total = new_total
+  #   end
+  #
+  #   def destroy_if_orphant
+  #     self.destroy if order_items.count.zero?
+  #   end
+  #
+  #   def has_all_data?
+  #     order_billing && order_shipping && credit_card && delivery
+  #   end
+  end
+end

app/views/layouts/shopping_cart/application.html.haml

@@ -0,0 +1,10 @@
+!!!
+%html
+  %head
+    %meta{:content => "text/html; charset=UTF-8", "http-equiv" => "Content-Type"}/
+    %title Shopping cart
+    = stylesheet_link_tag    "shopping_cart/application", media: "all"
+    = javascript_include_tag "shopping_cart/application"
+    = csrf_meta_tags
+  %body
+    = yield

app/views/shopping_cart/orders/_empty_cart.html.haml

@@ -0,0 +1,3 @@
+.text-center
+  %p.lead= I18n.t('cart.empty_cart')
+  -# = back_to_shop_link

app/views/shopping_cart/orders/_form.html.haml

@@ -0,0 +1,36 @@
+= form_for order do |f|
+  %table.table#current_order
+    %thead
+      %tr
+        %th.lead.text-center{colspan:2}= t('index.book')
+        %th.lead.text-center= t('index.quantity')
+        %th.lead.text-center= t('index.price')
+        %th.lead.text-center= t('index.total')
+    %tbody.text-center
+      = f.fields_for :order_items do |oi|
+        %tr
+          %td{width:"15%"}= image_tag oi.object.book.cover.small
+          %td.text-left{width:'55%'}
+            %h4= link_to oi.object.book.title, oi.object.book
+            %p= oi.object.book.preview
+          %td{width:'10%'}= oi.number_field :quantity, class: 'form-control'
+          %td{width:'10%'}= number_to_currency oi.object.book.price
+          %td{width:'10%'}= delete_item_link oi.object.id
+      %tr.lead
+        %td{colspan:3}
+        %td.text-right
+          %p= t('cart.discount') if order.coupon
+          %p= t('cart.total')
+        %td
+          %p= order.discount if order.coupon
+          %p= order.total_in_currency
+      %tr
+        %td.text-center= empty_cart_link order
+        %td.text-left= continue_shopping_link
+        %td
+          = f.fields_for :coupon do |c|
+            = c.text_field :code, class: 'form-control',
+                           placeholder: (order.coupon ? order.coupon.code : t('coupon_code')),
+                           disabled: (true if order.coupon)
+        %td.text-center= f.submit t('orders.edit.update'), class: 'btn btn-success'
+        %td.text-center= link_to_checkout

app/views/shopping_cart/orders/edit.html.haml

@@ -0,0 +1,8 @@
+.raw
+  .col-md-12
+    %h1.page-header= I18n.t('cart.page_title')
+    .well
+      - if @order
+        = render partial: 'form', locals: {order: @order}
+      - else
+        = render partial: 'empty_cart'

config/locales/shopping_cart.en.yml

@@ -0,0 +1,31 @@
+en:
+  # states:
+  #   in_progress: "In progress"
+  #   processing: "Processing"
+  #   in_delivery: "In delivery"
+  #   delivered: "Delivered"
+  cart:
+    page_title: "Cart"
+    empty_cart: "Nothing added to your order."
+    # total: "Order total:"
+    # back_to_shop: "Back to Shop"
+    # deleted: "Your order deleted successfuly"
+    # delete_error: "Something went wrong and your order was not deleted. Please, try again."
+  # index:
+  #   orders_title: "Your orders"
+  #   book: "Book"
+  #   price: "Price"
+  #   quantity: "QTY"
+  #   total: "Total"
+  #   to_cart: "Go to cart"
+  #   subtotal: "Subtotal:"
+  #   number: "Number"
+  #   completed_at: "Completed at"
+  #   total: "Total"
+  #   view: "View order"
+  #   no_orders: "You still have not ordered anything"
+  #   back_to_shop: "Back to Shop"
+  # show:
+  #   title: "Order information"
+  #   order_name_html: "Order %{num} <small>%{state}</small>"
+  #   back_to_orders: "Back to Orders"

config/routes.rb

@@ -1,2 +1,6 @@
 ShoppingCart::Engine.routes.draw do
+  get '/', to: 'orders#edit'
+  resources :orders, only: [:update, :create, :destroy]
+  resources :order_items, only: [:destroy]
+  resources :checkout
 end

db/migrate/20160814135512_create_shopping_cart_addresses.rb

@@ -0,0 +1,15 @@
+class CreateShoppingCartAddresses < ActiveRecord::Migration[5.0]
+  def change
+    create_table :shopping_cart_addresses do |t|
+      t.string :street
+      t.string :zipcode
+      t.string :city
+      t.string :phone
+      t.string :first_name
+      t.string :last_name
+      t.string :country_code
+      t.belongs_to :order, index: true
+      t.timestamps
+    end
+  end
+end