MakeYourLaws/MakeYourLaws

class Cart < ActiveRecord::Base
  belongs_to :user
  belongs_to :disbursement
  has_many :payments
  validates :user, :cart_items_count, :state, presence: true

  has_many :cart_items
  has_many :committees, through: :cart_items

  has_paper_trail

  state_machine initial: :empty do
    event :fill do
      transition [:empty, :filled, :checked_out] => :filled, :if => ->(c) { c.cart_items > 0 }
    end

    # Clear actually just mothballs the cart and creates a new one.
    event :clear do
      transition filled: :abandoned, if: ->(c) { c.cart_items == 0 }
    end

    event :check_out do
      transition filled: :checked_out, if: ->(c) { c.cart_items > 0 }
    end

    event :pay do
      transition checked_out: :paid
    end

    event :refund do
      transition paid: :filled
    end

    event :disburse do
      transition paid: :disbursed
    end

  end
end