Features: 1) Add support for loading redirect_uri from dynamic config using constance.BASE_DOMAIN;

Fixes: 1) Add missing imports for `constance.config` and `django.conf.settings`;

Extra: 1) Minor adjustment to `payload` initialization for consistency.

core/crm/amo/gateway.py

@@ -3,6 +3,8 @@ import traceback
 from typing import Optional
 
 import requests
+from constance import config
+from django.conf import settings
 from django.core.cache import cache
 from django.db import transaction
 
@@ -52,6 +54,7 @@ class AmoCRM:
         payload = {
             "client_id": self.client_id,
             "client_secret": self.client_secret,
+            "redirect_uri": f"https://api.{config.BASE_DOMAIN}/",
         }
         if self.refresh_token:
             payload["grant_type"] = "refresh_token"