[FIX] google_calendar: keep partner order according to email order

Before this commit, when an event was synced with internal and external users,
the corresponding partners were merged like this:
1) partner corresponding to internal users
2) regular partner

If the list of emails provided by google was in another order: regular partners
then internal, there were an issue:

```
emails = [a.get('email') for a in google_attendees] # sorted by google, external then internal for example
partners = self._get_sync_partner(emails) # always internal then external partners
for attendee in zip(emails, partners, google_attendees):
    # we are associating the external email with internal partner
    # the external attendee is skipped because we take the user partner
```

This commit makes sure to return the partner is the order of the mails in _get_sync_partner.

closes odoo/odoo#118355

X-original-commit: ae442c20878277da93feb8761f5ed556c0c735b2
Signed-off-by: Kevin Baptiste <kba@odoo.com>
Signed-off-by: Arnaud Joset <arj@odoo.com>

addons/google_calendar/models/google_sync.py

@@ -298,7 +298,11 @@ class GoogleSync(models.AbstractModel):
                      email not in [partner.email_normalized for partner in partners]]
         if remaining:
             partners += self.env['mail.thread']._mail_find_partner_from_emails(remaining, records=self, force_create=True, extra_domain=[('type', '!=', 'private')])
-        return partners
+        unsorted_partners = self.env['res.partner'].browse([p.id for p in partners])
+        # partners needs to be sorted according to the emails order provided by google
+        k = {value: idx for idx, value in enumerate(emails)}
+        result = unsorted_partners.sorted(key=lambda p: k.get(p.email_normalized, -1))
+        return result
 
     @api.model
     def _odoo_values(self, google_event: GoogleEvent, default_reminders=()):

addons/google_calendar/tests/test_sync_google2odoo.py

@@ -1369,3 +1369,45 @@ class TestSyncGoogle2Odoo(TestSyncGoogle):
         self.assertEqual(event.partner_ids[0], event.attendee_ids[0].partner_id)
         self.assertEqual('accepted', event.attendee_ids[0].state)
         self.assertGoogleAPINotCalled()
+
+    @patch_api
+    def test_partner_order(self):
+        self.private_partner.email = "internal_user@odoo.com"
+        self.private_partner.type = "contact"
+        user = self.env['res.users'].create({
+            'name': 'Test user Calendar',
+            'login': self.private_partner.email,
+            'partner_id': self.private_partner.id,
+            'type': 'contact'
+        })
+        values = {
+            'id': 'oj44nep1ldf8a3ll02uip0c9aa',
+            'description': 'Small mini desc',
+            'organizer': {'email': 'internal_user@odoo.com'},
+            'summary': 'Pricing new update',
+            'visibility': 'public',
+            'attendees': [{
+                'displayName': 'Mitchell Admin',
+                'email': self.public_partner.email,
+                'responseStatus': 'needsAction'
+            }, {
+                'displayName': 'Attendee',
+                'email': self.private_partner.email,
+                'responseStatus': 'needsAction',
+                'self': True,
+            }, ],
+            'reminders': {'useDefault': True},
+            'start': {
+                'dateTime': '2020-01-13T16:55:00+01:00',
+                'timeZone': 'Europe/Brussels'
+            },
+            'end': {
+                'dateTime': '2020-01-13T19:55:00+01:00',
+                'timeZone': 'Europe/Brussels'
+            },
+        }
+
+        self.env['calendar.event'].with_user(user)._sync_google2odoo(GoogleEvent([values]))
+        event = self.env['calendar.event'].search([('google_id', '=', values.get('id'))])
+        self.assertEqual(2, len(event.partner_ids), "Two attendees and two partners should be associated to the event")
+        self.assertGoogleAPINotCalled()