class ChipValue < ApplicationRecord
  belongs_to :base_chip, class_name: 'Chip'
  belongs_to :secondary_chip, class_name: 'Chip'

  validates :base_chip_id, uniqueness: { scope: :secondary_chip_id }

  def self.create_full_chip_value(params)
    base_chip_id = params[:base_chip_id]
    secondary_chip_id = params[:secondary_chip_id]
    value = params[:value].to_f

    chips = Chip.where(id: [base_chip_id, secondary_chip_id])
    base_chip = chips.first
    secondary_chip = chips.second

    mirrored_value = value.zero? ? 0 : (1 / value)

    base_chip_value = ChipValue.new(base_chip: base_chip, secondary_chip: secondary_chip, value: value)
    mirrored_chip_value = ChipValue.new(base_chip: secondary_chip, secondary_chip: base_chip, value: mirrored_value)

    transaction do
      base_chip_value.save
      mirrored_chip_value.save
    end
  end

  def self.update_full_chip_value(params)
    id = params[:id]
    new_value = params[:value].to_f
    mirrored_value = new_value.zero? ? 0 : (1 / new_value)

    chip_value = ChipValue.find(id)
    mirrored_chip_value = ChipValue.where(base_chip_id: chip_value.secondary_chip_id, secondary_chip_id: chip_value.base_chip_id).first

    chip_value.value = new_value
    mirrored_chip_value.value = mirrored_value

    transaction do
      chip_value.save
      mirrored_chip_value.save
    end
  end

  def self.destroy_full_chip_value(id)
    chip_value = ChipValue.find(id)
    mirrored_chip_value = ChipValue.where(base_chip_id: chip_value.secondary_chip_id, secondary_chip_id: chip_value.base_chip_id).first

    transaction do
      chip_value.destroy
      mirrored_chip_value.destroy
    end
  end
end