Mark sales as completed on woocommerce when shipment is sent

__init__.py

@@ -15,6 +15,7 @@ def register():
         ir.Cron,
         web.ShopWooCommerceId,
         web.Shop,
+        web.Sale,
         party.Party,
         party.Address,
         product.Category,

web.py

@@ -479,8 +479,33 @@ class Shop(metaclass=PoolMeta):
                             'orders',
                             params=shop.woocommerce_orders_params(page)))
                 Sale.save(sales)
-                for sale in sales:
-                    shop.woocommerce_response(
-                        wcapi.post(
-                            'orders/%s' % sale.web_id,
-                            data={'status': 'processing'}))
+                shop.update_woocommerce_status(sales, 'processing')
+
+    def update_woocommerce_status(self, sales, status):
+        wcapi = self.get_woocommerce_api()
+        for sale in sales:
+            self.woocommerce_response(
+                wcapi.post(
+                    'orders/%s' % sale.web_id,
+                    data={'status': status}))
+
+
+class Sale(metaclass=PoolMeta):
+    __name__ = 'sale.sale'
+
+    @property
+    def woocommerce_completed(self):
+        return self.shipment_state == 'sent'
+
+    @classmethod
+    def process(cls, sales):
+        to_check = []
+        for sale in sales:
+            if (sale.web_shop
+                    and sale.web_shop.type == 'woocommerce'
+                    and not sale.woocommerce_completed):
+                to_check.append(sale)
+        super().process(sales)
+        for sale in to_check:
+            if sale.woocommerce_completed:
+                sale.web_shop.update_woocommerce_status([sale], 'completed')