[EPIC] Audio metadata update - UI / API

api/funkwhale_api/common/views.py

@@ -1,3 +1,21 @@
+from django.db import transaction
+
+from rest_framework.decorators import action
+from rest_framework import exceptions
+from rest_framework import mixins
+from rest_framework import permissions
+from rest_framework import response
+from rest_framework import viewsets
+
+from . import filters
+from . import models
+from . import mutations
+from . import serializers
+from . import signals
+from . import tasks
+from . import utils
+
+
 class SkipFilterForGetObject:
     def get_object(self, *args, **kwargs):
         setattr(self.request, "_skip_filters", True)
@@ -7,3 +25,98 @@ class SkipFilterForGetObject:
         if getattr(self.request, "_skip_filters", False):
             return queryset
         return super().filter_queryset(queryset)
+
+
+class MutationViewSet(
+    mixins.ListModelMixin,
+    mixins.RetrieveModelMixin,
+    mixins.DestroyModelMixin,
+    viewsets.GenericViewSet,
+):
+    lookup_field = "uuid"
+    queryset = (
+        models.Mutation.objects.all()
+        .order_by("-creation_date")
+        .select_related("created_by", "approved_by")
+        .prefetch_related("target")
+    )
+    serializer_class = serializers.APIMutationSerializer
+    permission_classes = [permissions.IsAuthenticated]
+    ordering_fields = ("creation_date",)
+    filterset_class = filters.MutationFilter
+
+    def perform_destroy(self, instance):
+        if instance.is_applied:
+            raise exceptions.PermissionDenied("You cannot delete an applied mutation")
+
+        actor = self.request.user.actor
+        is_owner = actor == instance.created_by
+
+        if not any(
+            [
+                is_owner,
+                mutations.registry.has_perm(
+                    perm="approve", type=instance.type, obj=instance.target, actor=actor
+                ),
+            ]
+        ):
+            raise exceptions.PermissionDenied()
+
+        return super().perform_destroy(instance)
+
+    @action(detail=True, methods=["post"])
+    @transaction.atomic
+    def approve(self, request, *args, **kwargs):
+        instance = self.get_object()
+        if instance.is_applied:
+            return response.Response(
+                {"error": "This mutation was already applied"}, status=403
+            )
+        actor = self.request.user.actor
+        can_approve = mutations.registry.has_perm(
+            perm="approve", type=instance.type, obj=instance.target, actor=actor
+        )
+
+        if not can_approve:
+            raise exceptions.PermissionDenied()
+        previous_is_approved = instance.is_approved
+        instance.approved_by = actor
+        instance.is_approved = True
+        instance.save(update_fields=["approved_by", "is_approved"])
+        utils.on_commit(tasks.apply_mutation.delay, mutation_id=instance.id)
+        utils.on_commit(
+            signals.mutation_updated.send,
+            sender=None,
+            mutation=instance,
+            old_is_approved=previous_is_approved,
+            new_is_approved=instance.is_approved,
+        )
+        return response.Response({}, status=200)
+
+    @action(detail=True, methods=["post"])
+    @transaction.atomic
+    def reject(self, request, *args, **kwargs):
+        instance = self.get_object()
+        if instance.is_applied:
+            return response.Response(
+                {"error": "This mutation was already applied"}, status=403
+            )
+        actor = self.request.user.actor
+        can_approve = mutations.registry.has_perm(
+            perm="approve", type=instance.type, obj=instance.target, actor=actor
+        )
+
+        if not can_approve:
+            raise exceptions.PermissionDenied()
+        previous_is_approved = instance.is_approved
+        instance.approved_by = actor
+        instance.is_approved = False
+        instance.save(update_fields=["approved_by", "is_approved"])
+        utils.on_commit(
+            signals.mutation_updated.send,
+            sender=None,
+            mutation=instance,
+            old_is_approved=previous_is_approved,
+            new_is_approved=instance.is_approved,
+        )
+        return response.Response({}, status=200)