cobudget/cobudget-api

class Allocation < ActiveRecord::Base
  belongs_to :group
  belongs_to :user

  validates :group_id, presence: true
  validates :user_id, presence: true
  validates :amount, presence: true
  validates_numericality_of :amount, other_than: 0
  validate :amount_cannot_overdraft_member


  def formatted_amount
    Money.new(amount.to_f * 100, currency_code).format
  end

  private
    def currency_code
      group.currency_code
    end

    def amount_cannot_overdraft_member
      membership = Membership.find_by(member_id: user_id, group_id: group_id)
      if membership.raw_balance + amount < 0
        errors.add(:amount, "amount cannot overdraft member")
      end
    end
end