# interface.rb

# Pseudo-code
# 1. Print Welcome
# 2. Define your store (with a bunch of items)
# 2.1 What should we use ? Array / Hash
# 2.3 We use an Hash with the products
# 2.4 Each produtct is itself an hash with some properties:
# 2.5 price, description, quantity

require_relative "cart"

STORE = {
  #key => value
  "potatoe" => { price: 2, quantity: 20 },
  "banana" => { price: 1, quantity: 10 },
  "carrot" => { price: 3, quantity: 15 }
}

STORE.each do |product_name, properties|
  puts "#{product_name} has #{properties[:quantity]} items- Price: #{properties[:price]}"
end

CART = {
  # key => #value
  # product_name => quantity
  # product1 => 10
}

# 3. Get items from the user (shopping step)

input = nil
until input == "n"
  puts "What do you want to buy?"
  product = gets.chomp
  puts "How many?"
  quantity = gets.chomp.to_i

  # 4. Add items to the user Cart
  # 4.1 Check if the product is available on store
  if STORE.key?(product) && STORE[product][:quantity] >= quantity
    # 4.2 If it is - Subtract from the available quantity
    STORE[product][:quantity] = STORE[product][:quantity] - quantity
    # 4.3 And add to the cart
    if CART.key?(product)
      CART[product] = CART[product] + quantity
      # is the same as
      # CART[product] += quantity
    else
      CART[product] = quantity
    end
  else
    # 4.3 Otherwise lets say, sorry not enough stock
    puts "Sorry not enough #{product} available!"
  end
  # add_to_cart(STORE, CART, product, quantity)

  puts "Do you want buy more stuff?"
  input = gets.chomp
end


#5. Print the bill
total = 0
CART.each do |product, quantity|
  product_price = STORE[product][:price] * quantity
  total += product_price
  puts "You've bought #{product} for #{product_price}€."
end
puts "Youre total bill is #{total}€."














# 5. Print the bill (cashier step)
#total = 0
#CART.each do |key, value|
#  product_price = STORE[key][:price] * value
#  total += product_price
#  puts "Your cart has #{value} items of #{key} - It costs #{product_price}€."
#end

#puts "Total bill is #{total}"