class Chip < ApplicationRecord
  has_many :base_chip_values, class_name: "ChipValue", foreign_key: "base_chip_id", dependent: :delete_all
  has_many :secondary_chip_values, class_name: "ChipValue", foreign_key: "secondary_chip_id", dependent: :delete_all

  validates :name, uniqueness: true
  validates :name, :symbol, presence: true

  after_create :add_chip_values

  private

  # When new chip(currency) is added, add new record to the chip_values table for every existing chip(currency)
  def add_chip_values
    Chip.all.each do |chip|
      next if chip.name == name

      transaction do
        ChipValue.new(base_chip: self, secondary_chip: chip, value: 0).save
        ChipValue.new(base_chip: chip, secondary_chip: self, value: 0).save
      end
    end
  end
end