Add basic/minimal merge support for customers

tailbone/views/customers.py

@@ -93,6 +93,18 @@ class CustomerView(MasterView):
         'members',
     ]
 
+    mergeable = True
+
+    merge_coalesce_fields = [
+        'email_addresses',
+        'phone_numbers',
+    ]
+
+    merge_fields = merge_coalesce_fields + [
+        'uuid',
+        'name',
+    ]
+
     def get_expose_active_in_pos(self):
         if not hasattr(self, '_expose_active_in_pos'):
             self._expose_active_in_pos = self.rattail_config.getbool(
@@ -444,6 +456,37 @@ class CustomerView(MasterView):
 
         return self.redirect(self.request.get_referrer())
 
+    def get_merge_data(self, customer):
+        return {
+            'uuid': customer.uuid,
+            'name': customer.name,
+            'email_addresses': [e.address for e in customer.emails],
+            'phone_numbers': [p.number for p in customer.phones],
+        }
+
+    def merge_objects(self, removing, keeping):
+        coalesce = self.get_merge_coalesce_fields()
+        if coalesce:
+
+            if 'email_addresses' in coalesce:
+                keeping_emails = [e.address for e in keeping.emails]
+                for email in removing.emails:
+                    if email.address not in keeping_emails:
+                        keeping.add_email(address=email.address,
+                                          type=email.type,
+                                          invalid=email.invalid)
+                        keeping_emails.append(email.address)
+
+            if 'phone_numbers' in coalesce:
+                keeping_phones = [e.number for e in keeping.phones]
+                for phone in removing.phones:
+                    if phone.number not in keeping_phones:
+                        keeping.add_phone(number=phone.number,
+                                          type=phone.type)
+                        keeping_phones.append(phone.number)
+
+        self.Session.delete(removing)
+
     def configure_get_simple_settings(self):
         return [