Challenge done

Gemfile

@@ -9,7 +9,7 @@ group :test do
 end
 
 group :development, :test do
-  gem 'rubocop', '1.20'
+  gem 'rubocop', '1.51'
 end
 
 gem "pg", "~> 1.3"

Gemfile.lock

@@ -3,41 +3,43 @@ GEM
   specs:
     ansi (1.5.0)
     ast (2.4.2)
-    diff-lcs (1.4.4)
+    diff-lcs (1.5.0)
     docile (1.4.0)
-    parallel (1.20.1)
-    parser (3.0.2.0)
+    json (2.6.3)
+    parallel (1.23.0)
+    parser (3.2.2.1)
       ast (~> 2.4.1)
-    pg (1.3.5)
-    rainbow (3.0.0)
-    regexp_parser (2.1.1)
+    pg (1.5.3)
+    rainbow (3.1.1)
+    regexp_parser (2.8.0)
     rexml (3.2.5)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.1)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.1)
+    rspec (3.12.0)
+      rspec-core (~> 3.12.0)
+      rspec-expectations (~> 3.12.0)
+      rspec-mocks (~> 3.12.0)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.2)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.5)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.2)
-    rubocop (1.20.0)
+      rspec-support (~> 3.12.0)
+    rspec-support (3.12.0)
+    rubocop (1.51.0)
+      json (~> 2.3)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.2.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.9.1, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.11.0)
-      parser (>= 3.0.1.1)
-    ruby-progressbar (1.11.0)
-    simplecov (0.21.2)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.28.1)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.13.0)
+    simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
@@ -46,23 +48,23 @@ GEM
       simplecov
       terminal-table
     simplecov-html (0.12.3)
-    simplecov_json_formatter (0.1.3)
-    terminal-table (3.0.1)
+    simplecov_json_formatter (0.1.4)
+    terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
-    unicode-display_width (2.0.0)
+    unicode-display_width (2.4.2)
 
 PLATFORMS
-  ruby
+  arm64-darwin-22
 
 DEPENDENCIES
   pg (~> 1.3)
   rspec
-  rubocop (= 1.20)
+  rubocop (= 1.51)
   simplecov
   simplecov-console
 
 RUBY VERSION
    ruby 3.0.2p107
 
 BUNDLED WITH
-   2.2.26
+   2.2.22

README.md

@@ -1,94 +1 @@
-Shop Manager Project
-=================
-
-* Feel free to use Google, your notes, books, etc. but work on your own
-* If you refer to the solution of another coach or student, please put a link to that in your README
-* If you have a partial solution, **still check in a partial solution**
-* You must submit a pull request to this repo with your code next Monday morning
-
-Challenge:
--------
-
-Please start by [forking this repo](https://github.com/makersacademy/shop-manager-challenge/fork), then clone your fork to your local machine. Work into that directory.
-
-We are going to write a small terminal program allowing the user to manage a shop database containing some items and orders.
-
-User stories:
--------
-
-```
-As a shop manager
-So I can know which items I have in stock
-I want to keep a list of my shop items with their name and unit price.
-
-As a shop manager
-So I can know which items I have in stock
-I want to know which quantity (a number) I have for each item.
-
-As a shop manager
-So I can manage items
-I want to be able to create a new item.
-
-As a shop manager
-So I can know which orders were made
-I want to keep a list of orders with their customer name.
-
-As a shop manager
-So I can know which orders were made
-I want to assign each order to their corresponding item.
-
-As a shop manager
-So I can know which orders were made
-I want to know on which date an order was placed. 
-
-As a shop manager
-So I can manage orders
-I want to be able to create a new order.
-```
-
-Here's an example of the terminal output your program should generate (yours might be slightly different — that's totally OK):
-
-```
-Welcome to the shop management program!
-
-What do you want to do?
-  1 = list all shop items
-  2 = create a new item
-  3 = list all orders
-  4 = create a new order
-
-1 [enter]
-
-Here's a list of all shop items:
-
- #1 Super Shark Vacuum Cleaner - Unit price: 99 - Quantity: 30
- #2 Makerspresso Coffee Machine - Unit price: 69 - Quantity: 15
- (...)
-```
-
-Technical Approach:
------
-
-In this unit, you integrated a database by using the `PG` gem, and test-driving and building Repository classes. You can continue to use this approach when building this challenge.
-
-[You'll also need to mock IO](https://github.com/makersacademy/golden-square/blob/main/mocking_bites/05_unit_testing_terminal_io_bite.md) in your integration or unit tests, since the program will ask for user input.
-
-Notes on test coverage
-----------------------
-
-Please ensure you have the following **AT THE TOP** of your spec_helper.rb in order to have test coverage stats generated
-on your pull request:
-
-```ruby
-require 'simplecov'
-require 'simplecov-console'
-
-SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new([
-  SimpleCov::Formatter::Console,
-  # Want a nice code coverage website? Uncomment this next line!
-  # SimpleCov::Formatter::HTMLFormatter
-])
-SimpleCov.start
-```
-
-You can see your test coverage when you run your tests. If you want this in a graphical form, uncomment the `HTMLFormatter` line and see what happens!
+## SHOP-MANAGER CHALLENGE

app.rb

@@ -0,0 +1,117 @@
+require 'date'
+require_relative './lib/order_repository'
+require_relative './lib/item_repository'
+require_relative './lib/order_item_repository'
+require_relative './lib/database_connection'
+
+class Application
+  def initialize(database_name, io, item_repository, order_repository, order_item_repository)
+    DatabaseConnection.connect(database_name)
+    @io = io
+    @item_repository = item_repository
+    @order_repository = order_repository
+    @order_item_repository = order_item_repository
+  end
+
+  def run
+    @io.puts "----------------------------------------------"
+    @io.puts "Welcome to the shop management program!\n\n"
+    @io.puts "What do you want 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"
+
+    @io.print "\nEnter your choice: "
+    choice = @io.gets.chomp.to_i
+
+    case choice
+    when 1
+      @io.puts "\nHere's a list of all shop items:"
+      items = @item_repository.all
+      items.each do |item|
+        @io.puts " ##{item.id} #{item.name} - Unit price: #{item.unit_price}" \
+         " - Quantity: #{item.quantity}"
+      end
+    when 2
+      @io.puts "\nCreating a new item..."
+      @io.print "Enter item name: "
+      item_name = @io.gets.chomp
+      @io.print "Enter unit price: "
+      unit_price = @io.gets.chomp.to_f
+      @io.print "Enter quantity: "
+      quantity = @io.gets.chomp.to_i
+
+      new_item = Item.new
+      new_item.name = item_name
+      new_item.unit_price = unit_price
+      new_item.quantity = quantity
+
+      @item_repository.create(new_item)
+      @io.puts "\nNew item created successfully.\n"
+    when 3
+      @io.puts "\nHere's a list of all orders:"
+      orders = @order_repository.all
+      orders.each do |order|
+        @io.puts " ##{order.id} - Customer Name: #{order.customer_name}" \
+         " - Order Date: #{order.order_date}\n"
+      end
+    when 4
+      @io.puts "\nCreating a new order..."
+      @io.print "Enter customer name: "
+      customer_name = @io.gets.chomp
+      order_date = Date.today
+
+      new_order = Order.new
+      new_order.customer_name = customer_name
+      new_order.order_date = order_date
+
+      @order_repository.create(new_order) # Create the order
+
+      @io.puts "\nNew order created successfully.\n"
+
+      # Prompt to add items to the order
+      loop do
+        @io.print "Do you want to add an item to this order? (y/n):\n "
+        add_item_choice = @io.gets.chomp.downcase
+
+        break if add_item_choice != 'y'
+        items_show = @item_repository.all
+        items_show.each do |item|
+          @io.puts " ##{item.id} #{item.name} - Unit price: #{item.unit_price}" \
+         " - Quantity: #{item.quantity}"
+        end
+        order_all = @order_repository.all
+        @io.puts "----------------------------------------------------"
+        @io.print "Enter the ID of the item to add: "
+        item_id_input = @io.gets.chomp
+        item_id = item_id_input.to_i
+
+        if item_id.to_s == item_id_input && !item_id.zero?
+          item = @item_repository.find(item_id)
+          if item
+            @order_item_repository.create(order_all.last.id, item.id)
+            @io.puts "Item added to the order.\n"
+          else
+            @io.puts "Invalid item ID. Please try again.\n"
+          end
+        else
+          @io.puts "Invalid item ID. Please try again.\n"
+        end
+      end
+    else
+      @io.puts "\nInvalid choice. Please try again."
+    end
+  end
+end
+
+if __FILE__ == $0
+  app = Application.new(
+    'shop_manager',
+    Kernel,
+    ItemRepository.new,
+    OrderRepository.new,
+    OrderItemRepository.new
+  )
+  app.run
+end

lib/database_connection.rb

@@ -0,0 +1,26 @@
+require 'pg'
+
+# This class is a thin "wrapper" around the
+# PG library. We'll use it in our project to interact
+# with the database using SQL.
+
+class DatabaseConnection
+  # This method connects to PostgreSQL using the 
+  # PG gem. We connect to 127.0.0.1, and select
+  # the database name given in argument.
+  def self.connect(database_name)
+    @connection = PG.connect({ host: '127.0.0.1', dbname: database_name })
+  end
+
+  # This method executes an SQL query 
+  # on the database, providing some optional parameters
+  # (you will learn a bit later about when to provide these parameters).
+  def self.exec_params(query, params)
+    if @connection.nil?
+      raise 'DatabaseConnection.exec_params: Cannot run a SQL query as the connection to'\
+      'the database was never opened. Did you make sure to call first the method '\
+      '`DatabaseConnection.connect` in your app.rb file (or in your tests spec_helper.rb)?'
+    end
+    @connection.exec_params(query, params)
+  end
+end

lib/item.rb

@@ -0,0 +1,3 @@
+class Item
+  attr_accessor :id, :name, :unit_price, :quantity
+end