brand will be update by c1 sync only if empty

lemarche/siaes/management/commands/sync_with_emplois_inclusion.py

@@ -17,7 +17,7 @@
 
 UPDATE_FIELDS = [
     # "name",  # what happens to the slug if the name is updated?
-    "brand",
+    # "brand",  # see UPDATE_FIELDS_IF_EMPTY
     # "kind"
     "siret",
     "siret_is_valid",
@@ -39,6 +39,8 @@
     "c1_last_sync_date",
 ]
 
+UPDATE_FIELDS_IF_EMPTY = ["brand"]
+
 C1_EXTRA_KEYS = ["convention_is_active", "convention_asp_id"]
 
 
@@ -272,5 +274,10 @@ def c4_update_siae(self, c1_siae, c4_siae, dry_run):
                 if key in c1_siae:
                     c1_siae_filtered[key] = c1_siae[key]
 
+            # update fields only if empty
+            for key in UPDATE_FIELDS_IF_EMPTY:
+                if key in c1_siae and not c4_siae[key]:
+                    c1_siae_filtered[key] = c1_siae[key]
+
             Siae.objects.filter(c1_id=c4_siae.c1_id).update(**c1_siae_filtered)  # avoid updated_at change
             # self.stdout_info(f"Siae updated / {c4_siae.id} / {c4_siae.siret}")