Code Academy Long Challenge 1: Shopping Cart

amazon.rb

# Long challenge: Based on the following data,
#   write code that prints out the customer's total, including estimated
#   sales tax, based on the shipping address they entered.
# Your code should work even if the values of the data change.

# Your output should look like this: "Your total with tax is $4455.54."


shopping_cart = [
  {:name => "iPad 2", :price => 499, :quantity => 2},
  {:name => "iMac 27", :price => 1699, :quantity => 1},
  {:name => "MacBook Air 13", :price => 1299, :quantity => 1}
  ]
  
sales_tax = {"IL" => 0.115, "IN" => 0.09, "MI" => 0.06, "WI" => 0.056}

params = {
  :name => "Patrick McProgrammerson",
  :address1 => "222 W. Merchandise Mart Plaza",
  :address2 => "12th Floor",
  :city => "Chicago",
  :state => "IL",
  :zip => "60654"
  }
  
# Now change the value of the key :state in the params hash to "WI" and run your code again.

# Encapsulate your code in a method if you haven't already.
# The method should accept a cart, a hash containing tax rates, and an
#   address as arguments.

# Now change the quantity of iMacs in the data to 3 and run your method.

tallant-amazon.rb

shopping_cart = [
  {:name => "iPad 2", :price => 499, :quantity => 2},
  {:name => "iMac 27", :price => 1699, :quantity => 1},
  {:name => "MacBook Air 13", :price => 1299, :quantity => 3}
  ]
  
sales_tax = {
  "IL" => 0.115,
  "IN" => 0.09,
  "MI" => 0.06,
  "WI" => 0.056
  }
  
params = {
  :name => "Patrick McProgrammerson",
  :address1 => "1234 Street Name",
  :address2 => "",
  :city => "Madison",
  :state => "WI",
  :zip => "48939"
  }

line_break = "\n"*2

def order_details(cart, tax_rates, customer)
  total = total_with_tax(cart, tax_rates, customer)
  customer_message(cart, customer, total)
end

def total_with_tax(cart, tax_rates, customer)
  total = 0
  cart.each do |item|
    total += item[:price] * item[:quantity]
  end
  total += total * tax_rates[customer[:state]]
end

def customer_message(cart, customer, total)
  message = "You ordered:\n"
  cart.each do |item|
    message += "#{item[:quantity]} #{item[:name]} at $#{item[:price]} each.\n"
  end
  message += "Your total with tax is $#{total}\n\n"
  message += "Items will be shipped to:\n#{customer[:name]}\n"
  message += "#{customer[:address1]}\n"
  message += "#{customer[:address2]}\n" if customer[:address2].length > 0
  message += "#{customer[:city]}, #{customer[:state]} #{customer[:zip]}"
end

puts line_break

puts '#### FIRST CUSTOMER ####'
puts order_details(shopping_cart, sales_tax, params)

puts line_break

shopping_cart[2][:quantity] = 1

params = {
  :name => "Justin Tallant",
  :address1 => "1712 N Richmond Street",
  :address2 => "3rd Floor",
  :city => "Chicago",
  :state => "IL",
  :zip => "60647"
  }

puts '#### SECOND CUSTOMER ####'
puts order_details(shopping_cart, sales_tax, params)