Resolve "Per-user libraries" (use !368 instead)

api/funkwhale_api/federation/api_serializers.py

@@ -0,0 +1,57 @@
+from rest_framework import serializers
+
+from funkwhale_api.common import serializers as common_serializers
+from funkwhale_api.music import models as music_models
+
+from . import serializers as federation_serializers
+from . import models
+
+
+class NestedLibraryFollowSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = models.LibraryFollow
+        fields = ["creation_date", "uuid", "fid", "approved", "modification_date"]
+
+
+class LibrarySerializer(serializers.ModelSerializer):
+    actor = federation_serializers.APIActorSerializer()
+    files_count = serializers.SerializerMethodField()
+    follow = serializers.SerializerMethodField()
+
+    class Meta:
+        model = music_models.Library
+        fields = [
+            "fid",
+            "uuid",
+            "actor",
+            "name",
+            "description",
+            "creation_date",
+            "files_count",
+            "privacy_level",
+            "follow",
+        ]
+
+    def get_files_count(self, o):
+        return max(getattr(o, "_files_count", 0), o.files_count)
+
+    def get_follow(self, o):
+        try:
+            return NestedLibraryFollowSerializer(o._follows[0]).data
+        except (AttributeError, IndexError):
+            return None
+
+
+class LibraryFollowSerializer(serializers.ModelSerializer):
+    target = common_serializers.RelatedField("uuid", LibrarySerializer(), required=True)
+
+    class Meta:
+        model = models.LibraryFollow
+        fields = ["creation_date", "uuid", "target", "approved"]
+        read_only_fields = ["uuid", "approved", "creation_date"]
+
+    def validate_target(self, v):
+        actor = self.context["actor"]
+        if v.received_follows.filter(actor=actor).exists():
+            raise serializers.ValidationError("You are already following this library")
+        return v