generate invoice with multi vat

app/models/invoice_item.rb

@@ -27,7 +27,7 @@ class InvoiceItem < Footprintable
   def net_amount
     # deduct VAT
     vat_service = VatHistoryService.new
-    vat_rate = vat_service.invoice_vat(invoice)
+    vat_rate = vat_service.invoice_vat(self)
     Rational(amount_after_coupon / (vat_rate / 100.00 + 1)).round.to_f
   end
 
@@ -36,6 +36,21 @@ class InvoiceItem < Footprintable
     amount_after_coupon - net_amount
   end
 
+  # return invoice item type (Matchine/Training/Space/Event/Subscription)
+  def invoice_item_type
+    if object_type == Reservation.name
+      reservable_type = object.try(:reservable_type)
+      if reservable_type
+        return reservable_type
+      else
+        return ''
+      end
+    elsif object_type == Subscription.name
+      return Subscription.name
+    end
+    ''
+  end
+
   private
 
   def log_changes

app/pdfs/pdf/invoice.rb

@@ -230,10 +230,18 @@ class PDF::Invoice < Prawn::Document
 
       # TVA
       vat_service = VatHistoryService.new
-      vat_rate = vat_service.invoice_vat(invoice)
+      vat_rate_group = {}
-      if vat_rate != 0
+      invoice.invoice_items.each do |item|
+        vat_type = item.invoice_item_type
+        vat_rate_group[vat_type] = { vat_rate: vat_service.invoice_vat(item), total_vat: 0, amount: 0 } unless vat_rate_group[vat_type]
+        vat_rate_group[vat_type][:total_vat] += item.vat
+        vat_rate_group[vat_type][:amount] += item.amount.to_i
+      end
+      if total_vat != 0
         data += [[I18n.t('invoices.total_including_all_taxes'), number_to_currency(total)]]
-        data += [[I18n.t('invoices.including_VAT_RATE', RATE: vat_rate), number_to_currency(total_vat / 100.00)]]
+        vat_rate_group.each do |_type, rate|
+          data += [[I18n.t('invoices.including_VAT_RATE', RATE: rate[:vat_rate], AMOUNT: number_to_currency(rate[:amount] / 100.00)), number_to_currency(rate[:total_vat] / 100.00)]]
+        end
         data += [[I18n.t('invoices.including_total_excluding_taxes'), number_to_currency(total_ht / 100.00)]]
         data += [[I18n.t('invoices.including_amount_payed_on_ordering'), number_to_currency(total)]]
 
@@ -252,23 +260,25 @@ class PDF::Invoice < Prawn::Document
         row(0).font_style = :bold
         column(1).style align: :right
 
-        if Setting.get('invoice_VAT-active')
+        if total_vat != 0
           # Total incl. taxes
           row(-1).style align: :right
           row(-1).background_color = 'E4E4E4'
           row(-1).font_style = :bold
+          vat_rate_group.size.times do |i|
             # including VAT xx%
-          row(-2).style align: :right
+            row(-2 - i).style align: :right
-          row(-2).background_color = 'E4E4E4'
+            row(-2 - i).background_color = 'E4E4E4'
-          row(-2).font_style = :italic
+            row(-2 - i).font_style = :italic
+          end
           # including total excl. taxes
-          row(-3).style align: :right
+          row(-3 - vat_rate_group.size + 1).style align: :right
-          row(-3).background_color = 'E4E4E4'
+          row(-3 - vat_rate_group.size + 1).background_color = 'E4E4E4'
-          row(-3).font_style = :italic
+          row(-3 - vat_rate_group.size + 1).font_style = :italic
           # including amount payed on ordering
-          row(-4).style align: :right
+          row(-4 - vat_rate_group.size + 1).style align: :right
-          row(-4).background_color = 'E4E4E4'
+          row(-4 - vat_rate_group.size + 1).background_color = 'E4E4E4'
-          row(-4).font_style = :bold
+          row(-4 - vat_rate_group.size + 1).font_style = :bold
         end
       end
 

app/services/vat_history_service.rb

@@ -2,35 +2,29 @@
 
 # Provides the VAT rate in use at the given date
 class VatHistoryService
-  # return the VAT rate for the given Invoice/Avoir
+  # return the VAT rate for the given InvoiceItem
   def invoice_vat(invoice_item)
     if invoice_item.invoice.is_a?(Avoir)
-      vat_rate(invoice.avoir_date, vat_type(invoice_item))
+      vat_rate(invoice_item.invoice.avoir_date, invoice_item.invoice_item_type)
     else
-      vat_rate(invoice.created_at, vat_type(invoice_item))
+      vat_rate(invoice_item.invoice.created_at, invoice_item.invoice_item_type)
     end
   end
 
-  # return the VAT rate for the given date
+  # return the VAT rate for the given date and vat type
   def vat_rate(date, vat_rate_type)
-    @vat_rates = vat_history(vat_rate_type) if @vat_rates.nil?
+    vat_rates = vat_history(vat_rate_type)
 
-    first_rate = @vat_rates.first
+    first_rate = vat_rates.first
     return first_rate[:rate] if date < first_rate[:date]
 
-    @vat_rates.each_index do |i|
+    vat_rates.each_index do |i|
-      return @vat_rates[i][:rate] if date >= @vat_rates[i][:date] && (@vat_rates[i + 1].nil? || date < @vat_rates[i + 1][:date])
+      return vat_rates[i][:rate] if date >= vat_rates[i][:date] && (vat_rates[i + 1].nil? || date < vat_rates[i + 1][:date])
     end
   end
 
   private
 
-  def vat_type(invoice_item)
-    return invoice_item.object.reservable_type if invoice_item.object_type == 'Reservation'
-
-    'Subscription'
-  end
-
   def vat_history(vat_rate_type)
     chronology = []
     end_date = DateTime.current
@@ -41,6 +35,7 @@ class VatHistoryService
     chronology.push(start: DateTime.new(0), end: end_date, enabled: false)
     date_rates = []
     vat_rate_history_values = []
+    if vat_rate_type.present?
       vat_rate_by_type = Setting.find_by(name: "invoice_VAT-rate_#{vat_rate_type}")&.history_values&.order(created_at: 'ASC')
       first_vat_rate_by_type = vat_rate_by_type.select { |v| v.value.present? }.first
       if first_vat_rate_by_type
@@ -64,6 +59,9 @@ class VatHistoryService
       chronology.reverse_each do |period|
         date_rates.push(date: period[:start], rate: 0) unless period[:enabled]
       end
+    else
+      date_rates.push(date: chronology[-1][:start], rate: 0)
+    end
     date_rates.sort_by { |k| k[:date] }
   end
 end

config/locales/de.yml

@@ -90,7 +90,7 @@ de:
       other: "%{count} %{NAME}-Tickets"
     coupon_CODE_discount_of_DISCOUNT: "Gutschein {CODE}: Rabatt von {DISCOUNT}{TYPE, select, percent_off{%} other{}}" #messageFormat interpolation
     total_including_all_taxes: "Gesamtpreis inkl. Steuern"
-    including_VAT_RATE: "Inklusive MwSt. %{RATE}%"
+    including_VAT_RATE: "Inklusive MwSt. %{RATE} von %{AMOUNT}"
     including_total_excluding_taxes: "Gesamtbetrag zzgl. Steuern"
     including_amount_payed_on_ordering: "Inklusive bei Bestellung bezahlter Betrag"
     total_amount: "Gesamtbetrag"

config/locales/en.yml

@@ -90,7 +90,7 @@ en:
       other: "%{count} %{NAME} tickets"
     coupon_CODE_discount_of_DISCOUNT: "Coupon {CODE}: discount of {DISCOUNT}{TYPE, select, percent_off{%} other{}}"  #messageFormat interpolation
     total_including_all_taxes: "Total incl. all taxes"
-    including_VAT_RATE: "Including VAT %{RATE}%"
+    including_VAT_RATE: "Including VAT %{RATE}% of %{AMOUNT}"
     including_total_excluding_taxes: "Including Total excl. taxes"
     including_amount_payed_on_ordering: "Including amount payed on ordering"
     total_amount: "Total amount"

config/locales/es.yml

@@ -90,7 +90,7 @@ es:
       other: "%{count} %{NAME} entradas"
     coupon_CODE_discount_of_DISCOUNT: "Cupón {CODE}: descuento de {DISCOUNT}{TYPE, select, percent_off{%} other{}}" #messageFormat interpolation
     total_including_all_taxes: "Total impuestos incluidos"
-    including_VAT_RATE: "Incluyendo IVA %{RATE}%"
+    including_VAT_RATE: "Incluyendo IVA %{RATE}% de %{AMOUNT}"
     including_total_excluding_taxes: "Excluyendo IVA"
     including_amount_payed_on_ordering: "Incluyendo cantidad pagada en el pedido"
     total_amount: "Precio total"

config/locales/fr.yml

@@ -90,7 +90,7 @@ fr:
       other: "%{count} places %{NAME}"
     coupon_CODE_discount_of_DISCOUNT: "Code {CODE} : remise de {DISCOUNT} {TYPE, select, percent_off{%} other{}}" #messageFormat interpolation
     total_including_all_taxes: "Total TTC"
-    including_VAT_RATE: "Dont TVA %{RATE}%"
+    including_VAT_RATE: "Dont TVA %{RATE}% de %{AMOUNT}"
     including_total_excluding_taxes: "Dont total HT"
     including_amount_payed_on_ordering: "Dont montant payé à la commande"
     total_amount: "Montant total"

config/locales/no.yml

@@ -90,7 +90,7 @@
       other: "%{count} %{NAME} tickets"
     coupon_CODE_discount_of_DISCOUNT: "Kupong {CODE}: rabatt på {DISCOUNT}{TYPE, select, percent_off{%} other{}}" #messageFormat interpolation
     total_including_all_taxes: "Sum inkl. MVA"
-    including_VAT_RATE: "Inkludert MVA %{RATE}%"
+    including_VAT_RATE: "Inkludert MVA %{RATE}% %{AMOUNT}"
     including_total_excluding_taxes: "Inkludert total ekskl. MVA"
     including_amount_payed_on_ordering: "Inkludert beløp betalt ved bestilling"
     total_amount: "Totalbeløp"

config/locales/pt.yml

@@ -90,7 +90,7 @@ pt:
       other: "%{count} %{NAME} tickets"
     coupon_CODE_discount_of_DISCOUNT: "Cupom {CODE}: desconto de {DISCOUNT}{TYPE, select, percent_off{%} other{}}" #messageFormat interpolation
     total_including_all_taxes: "Total de taxas inclusas"
-    including_VAT_RATE: "Incluindo VAT %{RATE}%"
+    including_VAT_RATE: "Incluindo VAT %{RATE}% de %{AMOUNT}"
     including_total_excluding_taxes: "Incluindo total de faixas exclusas"
     including_amount_payed_on_ordering: "Incluindo o valor pago na encomenda"
     total_amount: "Montante total"