Include tax amount in shipping cost in product data feed

Closes #13173

modules/web_shop_product_data_feed/tests/google-products.csv

@@ -1,2 +1,2 @@
 id	title	description	link	image_link	availability	price	sale_price	google_product_category	brand	condition	item_group_id	unit_pricing_measure	unit_pricing_base_measure	product_type	gtin	mpn	is_bundle	product_length	product_width	product_height	product_weight	shipping
-12345	Product	Description	https://example.com/p/12345	https://example.com/i/12345.jpg	in stock	10.00 usd			Brand	new		1ct					False	50.0 cm	100.0 cm	20.0 cm	5.0 kg	US::Shipping:5.00 usd
+12345	Product	Description	https://example.com/p/12345	https://example.com/i/12345.jpg	in stock	10.00 usd			Brand	new		1ct					False	50.0 cm	100.0 cm	20.0 cm	5.0 kg	US::Shipping:6.00 usd

modules/web_shop_product_data_feed/tests/test_module.py

@@ -6,6 +6,7 @@ import tempfile
 from decimal import Decimal
 from unittest.mock import Mock, patch
 
+from trytond.modules.account.tests import create_chart
 from trytond.modules.company.tests import create_company, set_company
 from trytond.pool import Pool
 from trytond.protocols.wrappers import HTTPStatus
@@ -22,14 +23,17 @@ class WebShopProductDataFeedTestCase(ModuleTestCase):
     def test_data_feed(self):
         "Test data feed"
         pool = Pool()
+        Account = pool.get('account.account')
         Carrier = pool.get('carrier')
         CarrierSelection = pool.get('carrier.selection')
         Country = pool.get('country.country')
         Party = pool.get('party.party')
         Product = pool.get('product.product')
+        ProductCategory = pool.get('product.category')
         ProductIdentifier = pool.get('product.identifier')
         ProductTemplate = pool.get('product.template')
         Shop = pool.get('web.shop')
+        Tax = pool.get('account.tax')
         UoM = pool.get('product.uom')
 
         unit, = UoM.search([('name', '=', "Unit")])
@@ -45,6 +49,25 @@ class WebShopProductDataFeedTestCase(ModuleTestCase):
                 patch.object(tempfile, 'gettempdir') as gettempdir:
             gettempdir.return_value = directory
 
+            create_chart(company)
+
+            tax_account, = Account.search([
+                    ('name', '=', 'Main Tax'),
+                    ])
+
+            tax = Tax()
+            tax.name = tax.description = 'Test'
+            tax.type = 'percentage'
+            tax.rate = Decimal('0.2')
+            tax.invoice_account = tax_account
+            tax.credit_note_account = tax_account
+            tax.save()
+
+            category = ProductCategory(
+                name='Category', accounting=True,
+                customer_taxes=[tax])
+            category.save()
+
             carrier_template = ProductTemplate(
                 name="Shipping",
                 type='service',
@@ -52,6 +75,7 @@ class WebShopProductDataFeedTestCase(ModuleTestCase):
                 salable=True,
                 sale_uom=unit,
                 list_price=Decimal('5.0000'),
+                account_category=category,
                 )
             carrier_template.save()
             carrier_product = Product(template=carrier_template)

modules/web_shop_product_data_feed/web.py

@@ -344,18 +344,42 @@ class Shop_ShipmentCost(metaclass=PoolMeta):
         return CarrierSelection.get_carriers(pattern)
 
     def _product_data_feed_carrier_cost(
-            self, product, country, carrier, price):
+            self, product, country, carrier, price, pattern=None):
         pool = Pool()
         Currency = pool.get('currency.currency')
+        Date = pool.get('ir.date')
+        Tax = pool.get('account.tax')
+        if pattern is None:
+            pattern = {}
+
+        today = Date.today()
         context = {}
         if carrier.carrier_cost_method == 'percentage':
             context['amount'] = price
             context['currency'] = self.currency.id
         with Transaction().set_context(context=context):
             cost, currency_id = carrier.get_sale_price()
-        if cost is not None:
-            return Currency.compute(
-                Currency(currency_id), cost, self.currency)
+        if cost is None:
+            return
+        customer_tax_rule = self._customer_taxe_rule()
+        taxes = set()
+        for tax in carrier.carrier_product.customer_taxes_used:
+            if customer_tax_rule:
+                tax_ids = customer_tax_rule.apply(tax, pattern)
+                if tax_ids:
+                    taxes.update(tax_ids)
+                continue
+            taxes.add(tax.id)
+        if customer_tax_rule:
+            tax_ids = customer_tax_rule.apply(None, pattern)
+            if tax_ids:
+                taxes.update(tax_ids)
+        taxes = Tax.browse(taxes)
+        l_taxes = Tax.compute(taxes, cost, 1, today)
+        for l_tax in l_taxes:
+            cost += l_tax['amount']
+        return Currency.compute(
+            Currency(currency_id), cost, self.currency)
 
     def _product_data_feed_row(self, product, price, sale_price):
         row = super()._product_data_feed_row(product, price, sale_price)