From fb6c409a9af5b8a686e977ee2251c359071e0ec3 Mon Sep 17 00:00:00 2001
From: Andrew Godwin
Date: Sun, 6 Nov 2022 21:30:07 -0700
Subject: Rework task system and fetching.

I can taste how close follow is to working.
---
 users/models/follow.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

(limited to 'users/models/follow.py')

diff --git a/users/models/follow.py b/users/models/follow.py
index 7287900..29d036e 100644
--- a/users/models/follow.py
+++ b/users/models/follow.py
@@ -1,5 +1,9 @@
+from typing import Optional
+
 from django.db import models
 
+from miniq.models import Task
+
 
 class Follow(models.Model):
     """
@@ -17,7 +21,53 @@ class Follow(models.Model):
         related_name="inbound_follows",
     )
 
+    uri = models.CharField(blank=True, null=True, max_length=500)
     note = models.TextField(blank=True, null=True)
 
+    requested = models.BooleanField(default=False)
+    accepted = models.BooleanField(default=False)
+
     created = models.DateTimeField(auto_now_add=True)
     updated = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        unique_together = [("source", "target")]
+
+    @classmethod
+    def maybe_get(cls, source, target) -> Optional["Follow"]:
+        """
+        Returns a follow if it exists between source and target
+        """
+        try:
+            return Follow.objects.get(source=source, target=target)
+        except Follow.DoesNotExist:
+            return None
+
+    @classmethod
+    def create_local(cls, source, target):
+        """
+        Creates a Follow from a local Identity to the target
+        (which can be local or remote).
+        """
+        if not source.local:
+            raise ValueError("You cannot initiate follows on a remote Identity")
+        try:
+            follow = Follow.objects.get(source=source, target=target)
+        except Follow.DoesNotExist:
+            follow = Follow.objects.create(source=source, target=target, uri="")
+            follow.uri = source.actor_uri + f"follow/{follow.pk}/"
+            if target.local:
+                follow.requested = True
+                follow.accepted = True
+            else:
+                Task.submit("follow_request", str(follow.pk))
+            follow.save()
+        return follow
+
+    def undo(self):
+        """
+        Undoes this follow
+        """
+        if not self.target.local:
+            Task.submit("follow_undo", str(self.pk))
+        self.delete()
-- 
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