From 04cfc5a47c8e8e4795faa0aa92aa4dd6f54799d4 Mon Sep 17 00:00:00 2001
From: Raimon Esteve <raimonesteve@gmail.com>
Date: Thu, 20 Jul 2023 09:21:19 +0200
Subject: [PATCH] Replace euro digits to Double Up to Eight

160937
---
 invoice.py                  | 21 +++++++++++++++++++++
 template_facturae_3.2.2.xml | 34 +++++++++++++++++-----------------
 2 files changed, 38 insertions(+), 17 deletions(-)

diff --git a/invoice.py b/invoice.py
index c991727..bd9ff57 100644
--- a/invoice.py
+++ b/invoice.py
@@ -9,6 +9,7 @@ import random
 import xmlsig
 import hashlib
 import datetime
+import math
 from decimal import Decimal
 from jinja2 import Environment, FileSystemLoader
 from lxml import etree
@@ -297,6 +298,7 @@ class Invoice(metaclass=PoolMeta):
         """Return the content to render in factura-e XML file"""
         pool = Pool()
         Currency = pool.get('currency.currency')
+        Invoice = pool.get('account.invoice')
         Date = pool.get('ir.date')
         Rate = pool.get('currency.currency.rate')
 
@@ -436,6 +438,7 @@ class Invoice(metaclass=PoolMeta):
                 'invoice': self,
                 'Decimal': Decimal,
                 'Currency': Currency,
+                'Invoice': Invoice,
                 'euro': euro,
                 'exchange_rate': exchange_rate,
                 'exchange_rate_date': exchange_rate_date,
@@ -718,6 +721,24 @@ class Invoice(metaclass=PoolMeta):
 
         return signed_file_content
 
+    @classmethod
+    def double_up_to_eight(cls, value):
+        # return max 8 digits in DoubleUpToEightDecimalType
+        _TOTAL_DIGITS = 8
+        def digits_decimal(value):
+            num_str = str(value)
+            if '.' in num_str:
+                num_digits = num_str[::-1].find('.')
+            else:
+                num_digits = 0
+
+            return num_digits
+
+        if digits_decimal(value) > _TOTAL_DIGITS:
+            precision = 10 ** -_TOTAL_DIGITS
+            return math.floor(float(value) / precision) * precision
+        return value
+
 
 class InvoiceLine(metaclass=PoolMeta):
     __name__ = 'account.invoice.line'
diff --git a/template_facturae_3.2.2.xml b/template_facturae_3.2.2.xml
index c969731..2570764 100644
--- a/template_facturae_3.2.2.xml
+++ b/template_facturae_3.2.2.xml
@@ -161,7 +161,7 @@
                 <InvoiceCurrencyCode>{{ invoice.currency.code.upper() }}</InvoiceCurrencyCode>
                 {% if invoice.currency != euro %}
                 <ExchangeRateDetails>
-                    <ExchangeRate>{{ Currency.compute(invoice.currency, exchange_rate, euro) }}</ExchangeRate>
+                    <ExchangeRate>{{ Invoice.double_up_to_eight(exchange_rate) }}</ExchangeRate>
                     <ExchangeRateDate>{{ exchange_rate_date }}</ExchangeRateDate>
                 </ExchangeRateDetails>
                 {% endif %}
@@ -173,15 +173,15 @@
                 {% for invoice_tax in invoice.taxes_outputs %}
                 <Tax>
                     <TaxTypeCode>{{ invoice_tax.tax.report_type }}</TaxTypeCode>
-                    <TaxRate>{{ Currency.compute(invoice.currency, invoice_tax.tax.rate * 100, euro) }}</TaxRate>
+                    <TaxRate>{{ Invoice.double_up_to_eight(invoice_tax.tax.rate * 100) }}</TaxRate>
                     <TaxableBase>
-                        <TotalAmount>{{ Currency.compute(invoice.currency, invoice_tax.base, euro) }}</TotalAmount>
+                        <TotalAmount>{{ Invoice.double_up_to_eight(invoice_tax.base) }}</TotalAmount>
                         {% if invoice.currency != euro %}
-                        <EquivalentInEuros>{{ Currency.compute(invoice.currency, invoice_tax.base, euro) }}</EquivalentInEuros>
+                        <EquivalentInEuros>{{ Invoice.double_up_to_eight(invoice_tax.base) }}</EquivalentInEuros>
                         {% endif %}
                     </TaxableBase>
                     <TaxAmount>
-                        <TotalAmount>{{ Currency.compute(invoice.currency, invoice_tax.amount, euro) }}</TotalAmount>
+                        <TotalAmount>{{ Invoice.double_up_to_eight(invoice_tax.amount) }}</TotalAmount>
                         {% if invoice.currency != euro %}
                         <EquivalentInEuros>{{ Currency.compute(invoice.currency, invoice_tax.amount, euro) }}</EquivalentInEuros>
                         {% endif %}
@@ -208,7 +208,7 @@
                 {% for invoice_tax in invoice.taxes_withheld %}
                 <Tax>
                     <TaxTypeCode>{{ invoice_tax.tax.report_type }}</TaxTypeCode>
-                    <TaxRate>{{ Currency.compute(invoice.currency, invoice_tax.tax.rate * 100, euro) }}</TaxRate>
+                    <TaxRate>{{ Invoice.double_up_to_eight(invoice_tax.tax.rate * 100) }}</TaxRate>
                     <TaxableBase>
                         <TotalAmount>{{ Currency.compute(invoice.currency, invoice_tax.base, euro) }}</TotalAmount>
                         {% if invoice.currency != euro %}
@@ -226,13 +226,13 @@
             </TaxesWithheld>
             {% endif %}
             <InvoiceTotals>
-                <TotalGrossAmount>{{ Currency.compute(invoice.currency, invoice.untaxed_amount, euro) }}</TotalGrossAmount>
+                <TotalGrossAmount>{{ Invoice.double_up_to_eight(invoice.untaxed_amount) }}</TotalGrossAmount>
                 {# TODO: GeneralDiscounts and TotalGeneralDiscounts (account_invoice_discount_global) not supported #}
                 {# TODO: GeneralSurcharges and TotalGeneralSurcharges not supported #}
-                <TotalGrossAmountBeforeTaxes>{{ Currency.compute(invoice.currency, invoice.untaxed_amount, euro) }}</TotalGrossAmountBeforeTaxes>
-                <TotalTaxOutputs>{{ Currency.compute(invoice.currency, invoice.taxes_outputs | sum(attribute='amount', start=Decimal(0)), euro) }}</TotalTaxOutputs>
-                <TotalTaxesWithheld>{{ Currency.compute(invoice.currency, invoice.taxes_withheld | sum(attribute='amount', start=Decimal(0)), euro) }}</TotalTaxesWithheld>
-                <InvoiceTotal>{{ Currency.compute(invoice.currency, invoice.total_amount, euro) }}</InvoiceTotal>
+                <TotalGrossAmountBeforeTaxes>{{ Invoice.double_up_to_eight(invoice.untaxed_amount) }}</TotalGrossAmountBeforeTaxes>
+                <TotalTaxOutputs>{{ Invoice.double_up_to_eight(invoice.taxes_outputs | sum(attribute='amount', start=Decimal(0))) }}</TotalTaxOutputs>
+                <TotalTaxesWithheld>{{ Invoice.double_up_to_eight(invoice.taxes_withheld | sum(attribute='amount', start=Decimal(0))) }}</TotalTaxesWithheld>
+                <InvoiceTotal>{{ Invoice.double_up_to_eight(invoice.total_amount) }}</InvoiceTotal>
                 {# TODO: optional, not supported
                 - Subsidies
                 - PaymentsOnAccount, TotalPaymentsOnAccount
@@ -240,8 +240,8 @@
                 - TotalFinancialExpenses (account_payment_type_cost?)
                 - AmountsWithheld
                 #}
-                <TotalOutstandingAmount>{{ Currency.compute(invoice.currency, invoice.total_amount, euro) }}</TotalOutstandingAmount>
-                <TotalExecutableAmount>{{ Currency.compute(invoice.currency, invoice.total_amount, euro) }}</TotalExecutableAmount>
+                <TotalOutstandingAmount>{{ Invoice.double_up_to_eight(invoice.total_amount) }}</TotalOutstandingAmount>
+                <TotalExecutableAmount>{{ Invoice.double_up_to_eight(invoice.total_amount) }}</TotalExecutableAmount>
             </InvoiceTotals>
             <Items>
                 {% for line in invoice.lines if line.type == 'line' %}
@@ -258,19 +258,19 @@
                     <ItemDescription>{{ line.facturae_item_description }}</ItemDescription>
                     <Quantity>{{ line.quantity }}</Quantity>
                     <UnitOfMeasure>{{ UOM_CODE2TYPE.get(line.unit.symbol, '05') if line.unit else '05' }}</UnitOfMeasure>
-                    <UnitPriceWithoutTax>{{ Currency.compute(invoice.currency, line.unit_price, euro) }}</UnitPriceWithoutTax>
-                    <TotalCost>{{ Currency.compute(invoice.currency, line.amount, euro) }}</TotalCost>
+                    <UnitPriceWithoutTax>{{ Invoice.double_up_to_eight(line.unit_price) }}</UnitPriceWithoutTax>
+                    <TotalCost>{{ Invoice.double_up_to_eight(line.amount) }}</TotalCost>
                     {# TODO: optional, not supported
                     - DiscountsAndRebates (account_invoice_discount)
                     - Charges
                     #}
-                    <GrossAmount>{{ Currency.compute(invoice.currency, line.amount, euro) }}</GrossAmount>
+                    <GrossAmount>{{ Invoice.double_up_to_eight(line.amount) }}</GrossAmount>
                     {% if line.taxes_withheld %}
                     <TaxesWithheld>
                         {% for line_tax in invoice.taxes_withheld %}
                         <Tax>
                             <TaxTypeCode>{{ line_tax.tax.report_type }}</TaxTypeCode>
-                            <TaxRate>{{ Currency.compute(invoice.currency, line_tax.tax.rate * 100, euro) }}</TaxRate>
+                            <TaxRate>{{ Invoice.double_up_to_eight(line_tax.tax.rate * 100) }}</TaxRate>
                             <TaxableBase>
                                 <TotalAmount>{{ Currency.compute(invoice.currency, line.amount, euro) }}</TotalAmount>
                                 {% if invoice.currency != euro %}