module Trade
  module Model::Payment::CardPayment
    extend ActiveSupport::Concern

    included do
      belongs_to :card
      has_many :card_logs, ->(o){ where(card_id: o.card_id) }, as: :source

      before_validation :init_amount, if: -> { checked_amount_changed? }
      after_update :sync_amount, if: -> { saved_change_to_total_amount? }
      after_create_commit :sync_card_log, if: -> { saved_change_to_total_amount? }
      after_destroy :sync_amount_after_destroy
      after_destroy_commit :sync_destroy_card_log
    end

    def init_amount
      self.total_amount = checked_amount if total_amount.zero?
    end

    def assign_detail(params)
      self.notified_at = Time.current
      self.total_amount = params[:total_amount]
    end

    def compute_amount
      self.income_amount = 0
    end

    def sync_amount
      card.reload
      card.expense_amount += self.total_amount
      computed = card.compute_expense_amount
      if card.expense_amount == computed
        card.save!
      else
        card.errors.add :expense_amount, "#{card.expense_amount} Not Equal Computed #{computed}"
        logger.error "#{self.class.name}/Card: #{card.error_text}"
        raise ActiveRecord::RecordInvalid.new(card)
      end
    end

    def sync_amount_after_destroy
      card.reload
      card.expense_amount -= self.total_amount
      computed = card.compute_expense_amount
      if card.expense_amount == computed
        card.save!
      else
        card.errors.add :expense_amount, "#{card.expense_amount} Not Equal Computed #{computed}"
        logger.error "#{self.class.name}/Card: #{card.error_text}"
        raise ActiveRecord::RecordInvalid.new(card)
      end
    end

    def sync_card_log
      cl = self.card_logs.build
      cl.title = payment_uuid
      cl.tag_str = '支出'
      cl.amount = -self.total_amount
      cl.save
    end

    def sync_destroy_card_log
      cl = self.card_logs.build
      cl.title = payment_uuid
      cl.tag_str = '退款'
      cl.amount = self.total_amount
      cl.save
    end

  end
end