class MultiOrdersController < ApplicationController
  before_action :set_multi_order, only: [:generate_ordergroup_invoices]
  def create
    orders = Order.where(id: multi_order_params[:order_ids_for_multi_order])

    unclosed_orders = orders.select { |order| order.closed? == false }
    multi_orders = orders.select { |order| order.multi_order_id.present? }

    if multi_order_params[:multi_order_ids_for_multi_multi_order].present?
      #TODO: do the i18n and add a test
      flash[:alert] = "Du kannst keine Multi-Bestellungen in eine Multi-Multi-Bestellung umwandeln."
      redirect_to finance_order_index_path
      return
    end
    if multi_orders.any? || unclosed_orders.any?
      #TODO: do the i18n and add a test
      flash[:alert] = "Die Bestellung ist noch nicht abgeschlossen oder ist bereits Teil einer Multi-Bestellung."
      redirect_to finance_order_index_path
      return
    end

    begin
      @multi_order = MultiOrder.new
      @multi_order.orders = orders
      @multi_order.ends = orders.map(&:ends).max
      @multi_order.save!
      puts "
      " + "______________" + "
      " + "______________" + "
      " + "______________" + "
      " + "#{@multi_order.errors.inspect}" + "
      " + "______________"+ "
      " + "______________"+ "
      " + "______________"

      #create multi group orders
      all_group_orders = orders.flat_map(&:group_orders)

      grouped_by_ordergroup = all_group_orders.group_by(&:ordergroup_id)

      grouped_by_ordergroup.each do |ordergroup_id, group_orders|
        multi_group_order = MultiGroupOrder.create!(
          multi_order: @multi_order, group_orders: group_orders
        )

        # Now, associate each group_order with the new multi_group_order
        group_orders.each do |group_order|
          group_order.update!(multi_group_order: multi_group_order)
        end
      end
      redirect_to finance_order_index_path
    rescue ActiveRecord::RecordInvalid => e
      flash[:alert] = t('errors.general_msg', msg: e.message)
      redirect_to finance_order_index_path
    end

  end

  def generate_ordergroup_invoices
    @multi_order.group_orders.group_by(&:ordergroup_id).each do |_, group_orders|
      OrdergroupInvoice.create!(group_orders: group_orders)
    end
    redirect_to finance_order_index_path, notice: t('finance.balancing.close.notice')
  rescue StandardError => e
    redirect_to finance_order_index_path, alert: t('errors.general_msg', msg: e.message)
  end

  private

  def set_multi_order
    @multi_order = MultiOrder.find(params[:id])
  end

  def multi_order_params
    params.permit(:id, order_ids_for_multi_order: [], multi_order_ids_for_multi_multi_order: [])
  end
end