From e8d6dccbb27a8611311b5f94f593b69bcca99528 Mon Sep 17 00:00:00 2001
From: Andrew Godwin
Date: Sat, 17 Dec 2022 14:45:31 -0700
Subject: Report function and admin

---
 users/models/__init__.py |   1 +
 users/models/report.py   | 129 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 130 insertions(+)
 create mode 100644 users/models/report.py

(limited to 'users/models')

diff --git a/users/models/__init__.py b/users/models/__init__.py
index 1c5f519..4e271ba 100644
--- a/users/models/__init__.py
+++ b/users/models/__init__.py
@@ -5,6 +5,7 @@ from .identity import Identity, IdentityStates  # noqa
 from .inbox_message import InboxMessage, InboxMessageStates  # noqa
 from .invite import Invite  # noqa
 from .password_reset import PasswordReset  # noqa
+from .report import Report  # noqa
 from .system_actor import SystemActor  # noqa
 from .user import User  # noqa
 from .user_event import UserEvent  # noqa
diff --git a/users/models/report.py b/users/models/report.py
new file mode 100644
index 0000000..7bafd0c
--- /dev/null
+++ b/users/models/report.py
@@ -0,0 +1,129 @@
+import httpx
+import urlman
+from django.db import models
+
+from core.ld import canonicalise
+from stator.models import State, StateField, StateGraph, StatorModel
+from users.models import SystemActor
+
+
+class ReportStates(StateGraph):
+    new = State(try_interval=600)
+    sent = State()
+
+    new.transitions_to(sent)
+
+    @classmethod
+    async def handle_new(cls, instance: "Report"):
+        """
+        Sends the report to the remote server if we need to
+        """
+        report = await instance.afetch_full()
+        if report.forward and not report.subject_identity.domain.local:
+            system_actor = SystemActor()
+            try:
+                await system_actor.signed_request(
+                    method="post",
+                    uri=report.subject_identity.inbox_uri,
+                    body=canonicalise(report.to_ap()),
+                )
+            except httpx.RequestError:
+                return
+        return cls.sent
+
+
+class Report(StatorModel):
+    """
+    A complaint about a user or post.
+    """
+
+    class Types(models.TextChoices):
+        spam = "spam"
+        hateful = "hateful"
+        illegal = "illegal"
+        remote = "remote"
+        other = "other"
+
+    state = StateField(ReportStates)
+
+    subject_identity = models.ForeignKey(
+        "users.Identity",
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        related_name="reports",
+    )
+    subject_post = models.ForeignKey(
+        "activities.Post",
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="reports",
+    )
+
+    source_identity = models.ForeignKey(
+        "users.Identity",
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        related_name="filed_reports",
+    )
+    source_domain = models.ForeignKey(
+        "users.Domain",
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        related_name="filed_reports",
+    )
+
+    moderator = models.ForeignKey(
+        "users.Identity",
+        on_delete=models.SET_NULL,
+        blank=True,
+        null=True,
+        related_name="moderated_reports",
+    )
+
+    type = models.CharField(max_length=100, choices=Types.choices)
+    complaint = models.TextField()
+    forward = models.BooleanField(default=False)
+    valid = models.BooleanField(null=True)
+
+    seen = models.DateTimeField(blank=True, null=True)
+    resolved = models.DateTimeField(blank=True, null=True)
+    notes = models.TextField(blank=True, null=True)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+    class urls(urlman.Urls):
+        admin = "/admin/reports/"
+        admin_view = "{admin}{self.pk}/"
+
+    ### ActivityPub ###
+
+    async def afetch_full(self) -> "Report":
+        return await Report.objects.select_related(
+            "source_identity",
+            "source_domain",
+            "subject_identity__domain",
+            "subject_identity",
+            "subject_post",
+        ).aget(pk=self.pk)
+
+    def to_ap(self):
+        system_actor = SystemActor()
+        if self.subject_post:
+            objects = [
+                self.subject_post.object_uri,
+                self.subject_identity.actor_uri,
+            ]
+        else:
+            objects = self.subject_identity.actor_uri
+        return {
+            "id": f"https://{self.source_domain.uri_domain}/reports/{self.id}/",
+            "type": "Flag",
+            "actor": system_actor.actor_uri,
+            "object": objects,
+            "content": self.complaint,
+        }
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