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fab-manager/app/services/cart/add_item_service.rb

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# frozen_string_literal: true
# Provides methods for add order item to cart
class Cart::AddItemService
def call(order, orderable, quantity = 1)
return order if quantity.to_i.zero?
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item = case orderable.class.name
when 'Product'
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add_product(order, orderable, quantity)
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when /^CartItem::/
add_cart_item(order, orderable)
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else
raise Cart::UnknownItemError
end
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order.created_at = Time.current if order.order_items.length.zero?
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ActiveRecord::Base.transaction do
item.save
Cart::UpdateTotalService.new.call(order)
order.save
end
order.reload
end
private
def add_product(order, orderable, quantity)
raise Cart::InactiveProductError unless orderable.is_active
item = order.order_items.find_by(orderable: orderable)
quantity = orderable.quantity_min > quantity.to_i && item.nil? ? orderable.quantity_min : quantity.to_i
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if item.nil?
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item = order.order_items.new(quantity: quantity, orderable: orderable, amount: orderable.amount || 0)
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else
item.quantity += quantity
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end
raise Cart::OutStockError if item.quantity > orderable.stock['external']
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item
end
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def add_cart_item(order, orderable)
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order.order_items.new(quantity: 1, orderable: orderable, amount: orderable.price[:amount] || 0)
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end
end