demo.rb

module ZillyBuck
  extend ActiveSupport::Concern

  def create_reimburement_attachment_reward(owner)
    kind = :add_an_reimburement_attachment
    amount = ZillyBuckHistory::REWARD_AMOUNT[:add_an_reimburement_attachment]
    create_history_if_need(owner, kind, amount)
  end

  def create_approval_attachment_reward(owner)
    kind = :add_an_approval_attachment
    amount = ZillyBuckHistory::REWARD_AMOUNT[:add_an_approval_attachment]
    create_history_if_need(owner, kind, amount)
  end

  def create_invite_friend_reward(owner)
    kind = :invite_friend
    amount = ZillyBuckHistory::REWARD_AMOUNT[:invite_friend]
    create_history_if_need(owner, kind, amount)
  end

  private

  def create_history_if_need(owner, kind, amount)
    create_history if owner.can_receive_reward?(kind)
  end

  def create_history(owner, kind, amount)
    owner.zilly_buck_histories.create!(kind: kind, amount: amount)
  end

end