wip multi orders

app/controllers/multi_orders_controller.rb

@@ -0,0 +1,77 @@
+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