module EducodeSales
  class MoneyPlan < ApplicationRecord
    belongs_to :staff
    belongs_to :business
    belongs_to :follow_up, counter_cache: true

    has_many :money_plan_claims

    # todo 1 :实际回款 0:计划回款
    enum clazz: ['计划回款', '实际回款']
    enum category: ['预收款', '交付款', '验收款', '质保金']

    after_save :update_return_money
    after_destroy :update_return_money


    def return_period
      if self.date_at && self.business&.last_follow_up&.signed_date
        signed_date = self.business&.last_follow_up&.signed_date
        month = (self.date_at.year - signed_date.year) * 12 + self.date_at.month - signed_date.month - (self.date_at.day >= signed_date.day ? 0 : 1)
        if month <= 3
          '3个月内'
        elsif month <= 6
          '4-6个月内'
        elsif month <= 9
          '7-9个月'
        elsif month <= 12
          '10-12个月'
        elsif month <= 24
          '1-2年'
        elsif month <= 36
          '2-3年'
        else
          '3年以上'
        end
      else
        ''
      end
    end


    private

    def update_return_money
      if follow_up.business.last_follow_up_id == self.follow_up_id
        follow_up.business.update(return_money: MoneyPlan.where(clazz: '实际回款', follow_up_id: self.follow_up_id).sum(:amount))
      else
        follow_up.update(return_money: follow_up.money_plans.where(clazz: '实际回款').sum(:amount))
      end
    end
  end
end