class Menu < ApplicationRecord

  require 'spreadsheet'
  has_many :menu_categories, dependent: :destroy

  validates_presence_of :name, :valid_days, :valid_time_from, :valid_time_to
  # validates_format_of :valid_days, :with => /\A([0-7]{1}(,[0-7]{1})*)?\Z/i
  #Default Scope to pull the active version only
  default_scope { where(is_active: true).order("created_at asc") }

  def self.current_menu
    today = DateTime.now
    day_of_week = today.wday
    menus = Menu.where("is_active = true and '#{today.strftime("%H:%M")}' between TIME(valid_time_from) and TIME(valid_time_to)")
    current_menu = nil

    #Loop through the menu which is valid days - get the first menu out and return result
    menus.each do |menu|
      if menu.valid_days.include?(day_of_week.to_s)
        current_menu = menu
        break
      end
    end

    return current_menu
  end

  def self.destroyMenu(menu)
      cats = MenuCategory.where("menu_id=?",menu.id)
      cats.each do |cat|
        abc = MenuCategory.destroyCategory(cat)
      end 
      menu.destroy
      return false
  end

  def self.to_csv
    m_attributes = %w{name is_active valid_days valid_time_from valid_time_to created_by created_at updated_at}    
    CSV.generate(headers: true, row_sep: "\r\n") do |csv|
      csv << m_attributes
      menu = Menu.all
      menu.each do |user|
        csv << m_attributes.map{ |attr| user.send(attr)}
      end
    end
  end

  def self.import(file)
   
    spreadsheet = open_spreadsheet(file)
    sheet_count = spreadsheet.sheets.count-1
    for i in 0..sheet_count do
      header      = spreadsheet.sheet(i).row(1)
      sheet_name = spreadsheet.sheets[i]

      (2..spreadsheet.sheet(i).last_row).each do |ii|
        row = Hash[[header,spreadsheet.sheet(i).row(ii)].transpose]
        if sheet_name == "Account"
           # Account.create(id:row["id"], title: row["title"],account_type: row["account_type"],discount: row["discount"],point: row["point"],bonus: row["bonus"],rebate: row["rebate"])
           account = Account.find_by_id(row["id"]) 
          if account
            Account.create(title: row["title"],account_type: row["account_type"],discount: row["discount"],point: row["point"],bonus: row["bonus"],rebate: row["rebate"])
          else
            Account.create(id:row["id"], title: row["title"],account_type: row["account_type"],discount: row["discount"],point: row["point"],bonus: row["bonus"],rebate: row["rebate"])
          end
        elsif sheet_name == "Item Set"
           # ItemSet.create(id:row["id"], name: row[name], alt_name: row[alt_name], min_selectable_qty: row[min_selectable_qty], max_selectable_qty: row[max_selectable_qty])
           item_set = ItemSet.find_by_id(row["id"]) 
          if item_set
            ItemSet.create( name: row[name], alt_name: row[alt_name], min_selectable_qty: row[min_selectable_qty], max_selectable_qty: row[max_selectable_qty])
          else
            ItemSet.create(id:row["id"], name: row[name], alt_name: row[alt_name], min_selectable_qty: row[min_selectable_qty], max_selectable_qty: row[max_selectable_qty])
          end
        elsif sheet_name == "Menu Item Options"
           # MenuItemOption.create(id:row["id"], option_type: row["option_type"],name: row["name"],value: row["value"])
           item_options = MenuItemOption.find_by_id(row["id"])
          if item_options
            MenuItemOption.create( option_type: row["option_type"],name: row["name"],value: row["value"])
          else
            MenuItemOption.create(id:row["id"], option_type: row["option_type"],name: row["name"],value: row["value"])
          end
        elsif sheet_name == "Menu Item Attributes"
           # MenuItemAttribute.create(id:row["id"], attribute_type: row["attribute_type"],name: row["name"],value: row["value"])
           item_attributes = MenuItemAttribute.find_by_id(row["id"])
          if item_attributes
            MenuItemAttribute.create( attribute_type: row["attribute_type"],name: row["name"],value: row["value"])
          else
            MenuItemAttribute.create(id:row["id"], attribute_type: row["attribute_type"],name: row["name"],value: row["value"])
          end
        elsif sheet_name == "Menu"
          menu = Menu.find_by_id(row["id"])
          if menu
            Menu.create(name: row["name"], is_active: row["is_active"], valid_days: row["valid_days"],valid_time_from: row["valid_time_from"], valid_time_to: row["valid_time_to"], created_by: row["created_by"])
          else
            Menu.create(id:row["id"], name: row["name"], is_active: row["is_active"], valid_days: row["valid_days"],valid_time_from: row["valid_time_from"], valid_time_to: row["valid_time_to"], created_by: row["created_by"])
          end
        elsif sheet_name == "Menu Category"
           # MenuCategory.create(id:row["id"], menu_id: row["menu_id"], code: row["code"], name: row["name"], alt_name: row["alt_name"], order_by: row["order_by"], created_by: row["created_by"], menu_category_id: row["menu_category_id"], is_available: row["is_available"])
           menu_category = MenuCategory.find_by_id(row["id"])
          if menu_category
            MenuCategory.create(menu_id: row["menu_id"], code: row["code"], name: row["name"], alt_name: row["alt_name"], order_by: row["order_by"], created_by: row["created_by"], menu_category_id: row["menu_category_id"], is_available: row["is_available"])
          else
            MenuCategory.create(id:row["id"], menu_id: row["menu_id"], code: row["code"], name: row["name"], alt_name: row["alt_name"], order_by: row["order_by"], created_by: row["created_by"], menu_category_id: row["menu_category_id"], is_available: row["is_available"])
          end
        elsif sheet_name == "Menu Item"
           # MenuItem.create(id:row["id"], item_code: row["item_code"], name: row["name"], alt_name: row["alt_name"], image_path: row["image_path"], description: row["description"], information: row["information"], unit: row["unit"], type: row["type"], menu_category_id: row["menu_category_id"], item_attributes: row["item_attributes"], item_options: row["item_options"], account_id: row["account_id"], min_qty: row["min_qty"], taxable: row["taxable"], is_sub_item: row["is_sub_item"], is_available: row["is_available"], created_by: row["created_by"])
           menu_item = MenuItem.find_by_id(row["id"])
          if menu_item
            MenuItem.create(item_code: row["item_code"], name: row["name"], alt_name: row["alt_name"], image_path: row["image_path"], description: row["description"], information: row["information"], unit: row["unit"], type: row["type"], menu_category_id: row["menu_category_id"], item_attributes: JSON.parse(row["item_attributes"]), item_options: JSON.parse(row["item_options"]), account_id: row["account_id"], min_qty: row["min_qty"], taxable: row["taxable"], is_sub_item: row["is_sub_item"], is_available: row["is_available"], created_by: row["created_by"])
          else
            MenuItem.create(id:row["id"], item_code: row["item_code"], name: row["name"], alt_name: row["alt_name"], image_path: row["image_path"], description: row["description"], information: row["information"], unit: row["unit"], type: row["type"], menu_category_id: row["menu_category_id"], item_attributes: JSON.parse(row["item_attributes"]), item_options: JSON.parse(row["item_options"]), account_id: row["account_id"], min_qty: row["min_qty"], taxable: row["taxable"], is_sub_item: row["is_sub_item"], is_available: row["is_available"], created_by: row["created_by"])
          end
        elsif sheet_name == "Menu Item Instance"
           # MenuItemInstance.create(id:row["id"], menu_item_id: row["menu_item_id"].to_i, item_instance_code: row["item_instance_code"], item_instance_name: row["item_instance_name"], item_attributes: row["item_attributes"], price: row["price"], is_on_promotion: row["is_on_promotion"], promotion_price: row["promotion_price"], is_available: row["is_available"], is_default: row["is_default"])
           item_instance = MenuItemInstance.find_by_id(row["id"])
          if item_instance
            MenuItemInstance.create(menu_item_id: row["menu_item_id"].to_i, item_instance_code: row["item_instance_code"], item_instance_name: row["item_instance_name"], item_attributes: JSON.parse(row["item_attributes"]), price: row["price"], is_on_promotion: row["is_on_promotion"], promotion_price: row["promotion_price"], is_available: row["is_available"], is_default: row["is_default"])
          else
            MenuItemInstance.create(id:row["id"], menu_item_id: row["menu_item_id"].to_i, item_instance_code: row["item_instance_code"], item_instance_name: row["item_instance_name"], item_attributes: JSON.parse(row["item_attributes"]), price: row["price"], is_on_promotion: row["is_on_promotion"], promotion_price: row["promotion_price"], is_available: row["is_available"], is_default: row["is_default"])
          end
        elsif sheet_name == "Menu Instance Item Set"
           # MenuInstanceItemSet.create(id:row["id"], item_set_id: row["item_set_id"], menu_item_instance_id: row["menu_item_instance_id"])
           menu_instance_set = MenuInstanceItemSet.find_by_id(row["id"])
          if menu_instance_set
            MenuInstanceItemSet.create(item_set_id: row["item_set_id"], menu_item_instance_id: row["menu_item_instance_id"])
          else
            MenuInstanceItemSet.create(id:row["id"], item_set_id: row["item_set_id"], menu_item_instance_id: row["menu_item_instance_id"])
          end
        elsif sheet_name == "Menu Item Set" 
           # MenuItemSet.create(id:row["id"], item_set_id: row["item_set_id"], menu_item_id: row["menu_item_id"])
           menu_item_set = MenuItemSet.find_by_id(row["id"])
          if menu_item_set
            MenuItemSet.create(item_set_id: row["item_set_id"], menu_item_id: row["menu_item_id"])
          else
            MenuItemSet.create(id:row["id"], item_set_id: row["item_set_id"], menu_item_id: row["menu_item_id"])
          end
        end
      end
    end
 
  end

  def self.open_spreadsheet(file)
    case File.extname(file.original_filename)
    when ".csv" then Roo::CSV.new(file.path,nil,:ignore)
    when ".xls" then Roo::Excel.new(file.path,nil,:ignore)
    when ".xlsx" then Roo::Excelx.new(file.path,nil,:ignore)
    else raise "Unknown File type: #{original_filename}"
    end
  end

end