class SaleItem < ApplicationRecord
  self.primary_key = "sale_item_id"

  #primary key - need to be unique generated for multiple shops
  before_create :generate_custom_id

  belongs_to :sale

  #compute items - discount, tax, price_change
  def compute_item
  end


  def self.get_order_items_details(sale_id)
    order_details = SaleItem.select("sales.total_tax as tax_amount, sales.grand_total as grand_total_amount , sales.total_discount as discount_amount,sales.receipt_date as receipt_date,
                      sales.cashier_name,sales.receipt_no,sale_items.product_name as item_name,sale_items.qty,sale_items.price,sale_items.unit_price as total_price")
                   .joins("left join sales on sales.sale_id = sale_items.sale_id")
                   .where("sale_items.sale_id=?",sale_id)

    # sale_orders = SaleOrder.where("sale_id=?",sale_id)
    # if sale_orders
    #    sale_orders.each do |sale_order|
    #     order_details = SaleItem.select("sales.total_discount as discount_amount,DATE_FORMAT(sales.receipt_date,'%Y-%m-%d %h:%m') as receipt_date,sales.cashier_name,sales.receipt_no,sale_items.product_name as item_name,sale_items.qty,sale_items.price,sale_items.unit_price as total_price")
    #        .joins("left join sales on sales.id = sale_items.sale_id")
    #        .where("sale_items.sale_id=?",sale_order.sale_id)
    #     return order_details
    #   end
    # else
    #   return false
    # end
  end

  def self.calculate_food_beverage(sale_items)
    food_prices=0
    beverage_prices=0

    sale_items.each do |si|
      food_price, beverage_price = self.get_price(si.sale_item_id)            

      food_prices = food_prices + food_price
      beverage_prices = beverage_prices + beverage_price
    end
    return food_prices, beverage_prices
  end

  def self.get_price(sale_item_id)
    food_price=0
    beverage_price=0

    item=SaleItem.select("sale_items.price , menu_items.account_id")
                          .joins("left join menu_items on menu_items.item_code = sale_items.product_code")
                          .where("sale_items.sale_item_id=?", sale_item_id.to_s)
    if item[0].account_id == 1
      food_price = item[0].price
    else 
      beverage_price = item[0].price
    end

    return food_price, beverage_price                       
  end

  private
  def generate_custom_id
    self.sale_item_id = SeedGenerator.generate_id(self.class.name, "SLI")

  end
end