Shop manager challenge

app.rb

@@ -0,0 +1,90 @@
+# file: app.rb
+require_relative 'lib/database_connection'
+require_relative './lib/items_repository'
+require_relative './lib/orders_repository'
+
+class Application
+
+  # The Application class initializer
+  # takes four arguments:
+  #  * The database name to call `DatabaseConnection.connect`
+  #  * the Kernel object as `io` (so we can mock the IO in our tests)
+  #  * the AlbumRepository object (or a double of it)
+  #  * the ArtistRepository object (or a double of it)
+  def initialize(database_name, io, items_repository, orders_repository)
+    DatabaseConnection.connect(database_name)
+    @io = io
+    @items_repository = items_repository
+    @orders_repository = orders_repository
+  end
+
+def run
+  @io.puts "Welcome to the shop management program!"
+  @io.puts ""
+  @io.puts "What would you like to do?"
+  @io.puts "1 - List all shop items"
+  @io.puts "2 - Create a new item"
+  @io.puts "3 - List all orders"
+  @io.puts "4 - Create a new order"
+  input = @io.gets.to_i
+
+  case input
+  when 1
+    all_items = @items_repository.all
+    puts "Here is a list of your shop items!"
+    puts ""
+    all_items.each do |item|
+      puts "##{item.item_name} - Unit price: #{item.item_price} - Quantity: #{item.item_quantity}"
+    end
+  when 2 
+    @io.puts "Please enter the name of the item"
+    new_name = @io.gets.chomp.to_s
+    @io.puts "Please enter the price of the item"
+    new_unit_price = @io.gets.chomp.to_i
+    @io.puts "Please enter the quantity of the item"
+    new_stock_quantity = @io.gets.chomp.to_i
+    @io.puts "Here's a list of all shop items:"
+    new_item = Items.new
+    new_item.item_name, new_item.item_price, new_item.item_quantity = new_name, new_unit_price, new_stock_quantity
+    @items_repository.create(new_item)
+    @items_repository.all.each do |item|
+      @io.puts "##{item.item_name} - Unit price: #{item.item_price} - Quantity: #{item.item_quantity}"
+    end
+  when 3
+    @io.puts "Here's a list of all orders:"
+    @orders_repository.all.each do |order|
+      @io.puts "##{order.order_name} Customer: #{order.customer_name} - Order date: #{order.order_date}"
+    end
+  when 4 
+    @io.puts "Please enter the name of the order"
+    new_name = @io.gets.chomp.to_s
+    @io.puts "Please enter the name of the customer"
+    new_customer = @io.gets.chomp.to_s
+    @io.puts "Please enter date of the order"
+    new_date = @io.gets.chomp.to_i
+    @io.puts "Here's a list of all shop orders:"
+    new_order = Orders.new
+    new_order.order_name, new_order.customer_name, new_order.order_date = new_name, new_customer, new_date
+    @orders_repository.create(new_order)
+    @orders_repository.all.each do |order|
+      @io.puts "##{order.order_name} - Customer Name: #{order.customer_name} - Order Date: #{order.order_date}"
+      end
+    end
+  end
+end
+
+
+
+# Don't worry too much about this if statement. It is basically saying "only
+# run the following code if this is the main file being run, instead of having
+# been required or loaded by another file.
+# If you want to learn more about __FILE__ and $0, see here: https://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Variables_and_Constants#Pre-defined_Variables
+if __FILE__ == $0
+  app = Application.new(
+    'shop_manager_database',
+    Kernel,
+    ItemsRepository.new,
+    OrdersRepository.new
+  )
+  app.run
+end