See #852: improved routing logic for federation messages (support multiple objects types for one route)

api/funkwhale_api/users/serializers.py

@@ -11,6 +11,7 @@ from versatileimagefield.serializers import VersatileImageFieldSerializer
 
 from funkwhale_api.activity import serializers as activity_serializers
 from funkwhale_api.common import serializers as common_serializers
+from funkwhale_api.federation import models as federation_models
 from . import adapters
 from . import models
 
@@ -51,6 +52,17 @@ class RegisterSerializer(RS):
         get_adapter().clean_password(data["password1"], user)
         return data
 
+    def validate_username(self, value):
+        username = super().validate_username(value)
+        duplicates = federation_models.Actor.objects.local().filter(
+            preferred_username__iexact=username
+        )
+        if duplicates.exists():
+            raise serializers.ValidationError(
+                "A user with that username already exists."
+            )
+        return username
+
     def save(self, request):
         user = super().save(request)
         if self.validated_data.get("invitation"):
@@ -143,3 +155,17 @@ class MeSerializer(UserReadSerializer):
 class PasswordResetSerializer(PRS):
     def get_email_options(self):
         return {"extra_email_context": adapters.get_email_context()}
+
+
+class UserDeleteSerializer(serializers.Serializer):
+    password = serializers.CharField()
+    confirm = serializers.BooleanField()
+
+    def validate_password(self, value):
+        if not self.instance.check_password(value):
+            raise serializers.ValidationError("Invalid password")
+
+    def validate_confirm(self, value):
+        if not value:
+            raise serializers.ValidationError("Please confirm deletion")
+        return value