Cash Register III

Cash Register III

require 'pry'
require 'csv'

def calc_subtotal(menu, order)

  runtotal = 0
  order.each do |sku, qty|

    subtotal_item = menu.find {|item| item["SKU"] == sku}
    runtotal += subtotal_item["retail_price"] * qty
  end

  runtotal
end

def print_receipt(menu, order, subtotal)
  time = Time.now


  puts "HEY THANKS
  ==============\n
  Your items are itemized in the item-list below, items:\n
  ==============\n"

  order.each do |sku, quantz|
    subtotal_item = menu.find {|item| item["SKU"] == sku}
    puts "#{quantz} #{subtotal_item["name"]} -- $#{'%.2f' %((subtotal_item["retail_price"])*(quantz.to_f))}"
  end

  puts "Please enter the cash tendered:"
  cash = gets.chomp.to_f

  if subtotal > cash
    puts "\n\nThat's not gonna cut it! You're short by $#{'%.2f' %(subtotal-cash)}."
  else
    puts "\n\nYour change is $#{'%.2f' %(cash-subtotal)}\n\n
  ===========\n
  Thanks yo!\n
  ===========\n
  #{time.hour}:#{time.min} #{time.month}-#{time.day}-#{time.year}"

  end

end



qty = 0
menu_select = 0
subtotal = 0
runtotal = 0

cash = 0

menu = []
menu_print_counter = 0

order = {}

CSV.foreach('products.csv', headers: true) do |item|
  item["retail_price"] = item["retail_price"].to_f
  menu << item
end

puts "Welcome to James' Coffee Emporium!!!\n\n"

menu.each do |menu_element|
  puts "#{menu_print_counter + 1}) Add item - #{menu_element["name"]} - #{'%.2f' %(menu_element["retail_price"])}"
  menu_print_counter += 1
end

puts "#{menu_print_counter+1}) Complete Your Order\n"

while true

  puts "Make a selection yo: "
  menu_select = gets.chomp.to_i

  if menu_select == (menu_print_counter+1)
    break
  end

  puts "How many?"
  qty = gets.chomp.to_i

  if(menu_select != 0 && qty != 0)


    item = menu[menu_select-1]
    sku = item["SKU"]

    oldqty = order[sku] || 0
    order[sku] = oldqty + qty

    subtotal = calc_subtotal(menu, order)

  else
    puts "*** Bad input, so bad!! ***"
  end

  puts "Subtotal: $#{'%.2f' %(subtotal)}"

end

print_receipt(menu, order, subtotal)

File.open('invoice.csv', 'w') do |f|
  f.puts 'SKU,Quantity'
  order.each do |sku, qty|
    f.puts "#{sku},#{qty}"
  end

#order -> hash with {menu[][1] (item #+1)  => qty}
#menu -> 0 is sku, 1 is name, 2 is price
# csv gets SKU - QTY\n

end