Model, view and serializer for instance-level policies

api/funkwhale_api/moderation/models.py

@@ -0,0 +1,63 @@
+import urllib.parse
+import uuid
+
+from django.db import models
+from django.utils import timezone
+
+
+class InstancePolicyQuerySet(models.QuerySet):
+    def active(self):
+        return self.filter(is_active=True)
+
+    def matching_url(self, url):
+        parsed = urllib.parse.urlparse(url)
+        return self.filter(
+            models.Q(target_domain_id=parsed.hostname) | models.Q(target_actor__fid=url)
+        )
+
+
+class InstancePolicy(models.Model):
+    uuid = models.UUIDField(default=uuid.uuid4, unique=True)
+    actor = models.ForeignKey(
+        "federation.Actor",
+        related_name="created_instance_policies",
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+    )
+    target_domain = models.OneToOneField(
+        "federation.Domain",
+        related_name="instance_policy",
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+    )
+    target_actor = models.OneToOneField(
+        "federation.Actor",
+        related_name="instance_policy",
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+    )
+    creation_date = models.DateTimeField(default=timezone.now)
+
+    is_active = models.BooleanField(default=True)
+    # a summary explaining why the policy is in place
+    summary = models.TextField(max_length=10000, null=True, blank=True)
+    # either block everything (simpler, but less granularity)
+    block_all = models.BooleanField(default=False)
+    # or pick individual restrictions below
+    # do not show in timelines/notifications, except for actual followers
+    silence_activity = models.BooleanField(default=False)
+    silence_notifications = models.BooleanField(default=False)
+    # do not download any media from the target
+    reject_media = models.BooleanField(default=False)
+
+    objects = InstancePolicyQuerySet.as_manager()
+
+    @property
+    def target(self):
+        if self.target_actor:
+            return {"type": "actor", "obj": self.target_actor}
+        if self.target_domain_id:
+            return {"type": "domain", "obj": self.target_domain}