Add admin notification for new identities

activities/models/fan_out.py

@@ -241,6 +241,13 @@ class FanOutStates(StateGraph):
             case (FanOut.Types.identity_deleted, True):
                 pass
 
+            # Created identities make a timeline event
+            case (FanOut.Types.identity_created, True):
+                await sync_to_async(TimelineEvent.add_identity_created)(
+                    identity=fan_out.identity,
+                    new_identity=fan_out.subject_identity,
+                )
+
             case _:
                 raise ValueError(
                     f"Cannot fan out with type {fan_out.type} local={fan_out.identity.local}"
@@ -262,6 +269,7 @@ class FanOut(StatorModel):
         undo_interaction = "undo_interaction"
         identity_edited = "identity_edited"
         identity_deleted = "identity_deleted"
+        identity_created = "identity_created"
 
     state = StateField(FanOutStates)
 

activities/models/timeline_event.py

@@ -18,6 +18,7 @@ class TimelineEvent(models.Model):
         followed = "followed"
         boosted = "boosted"  # Someone boosting one of our posts
         announcement = "announcement"  # Server announcement
+        identity_created = "identity_created"  # New identity created
 
     # The user this event is for
     identity = models.ForeignKey(
@@ -103,6 +104,17 @@ class TimelineEvent(models.Model):
             defaults={"published": post.published or post.created},
         )[0]
 
+    @classmethod
+    def add_identity_created(cls, identity, new_identity):
+        """
+        Adds a new identity item
+        """
+        return cls.objects.get_or_create(
+            identity=identity,
+            type=cls.Types.identity_created,
+            subject_identity=new_identity,
+        )[0]
+
     @classmethod
     def add_post_interaction(cls, identity, interaction):
         """
@@ -179,6 +191,8 @@ class TimelineEvent(models.Model):
             )
         elif self.type == self.Types.followed:
             result["type"] = "follow"
+        elif self.type == self.Types.identity_created:
+            result["type"] = "admin.sign_up"
         else:
             raise ValueError(f"Cannot convert {self.type} to notification JSON")
         return result

activities/views/timelines.py

@@ -129,6 +129,7 @@ class Notifications(ListView):
         "boosted": TimelineEvent.Types.boosted,
         "mentioned": TimelineEvent.Types.mentioned,
         "liked": TimelineEvent.Types.liked,
+        "identity_created": TimelineEvent.Types.identity_created,
     }
 
     def get_queryset(self):

api/views/notifications.py

@@ -25,6 +25,7 @@ def notifications(
         "reblog": TimelineEvent.Types.boosted,
         "mention": TimelineEvent.Types.mentioned,
         "follow": TimelineEvent.Types.followed,
+        "admin.sign_up": TimelineEvent.Types.identity_created,
     }
     requested_types = set(request.GET.getlist("types[]"))
     excluded_types = set(request.GET.getlist("exclude_types[]"))

core/models/config.py

@@ -214,6 +214,7 @@ class Config(models.Model):
         signup_allowed: bool = True
         signup_text: str = ""
         signup_max_users: int = 0
+        signup_email_admins: bool = True
         content_warning_text: str = "Content Warning"
 
         post_length: int = 500

templates/activities/_event.html

@@ -34,6 +34,13 @@
     {% if not event.collapsed %}
         {% include "activities/_post.html" with post=event.subject_post event=event %}
     {% endif %}
+{% elif event.type == "identity_created" %}
+    <div class="follow-banner">
+        <a href="{{ event.subject_identity.urls.view }}">
+            {{ event.subject_identity.html_name_or_handle }}
+        </a> was just created
+    </div>
+    {% include "activities/_identity.html" with identity=event.subject_identity created=event.created %}
 {% else %}
     Unknown event type {{ event.type }}
 {% endif %}

templates/activities/notifications.html

@@ -28,6 +28,13 @@
         {% else %}
             <a href=".?mentioned=true"><i class="fa-solid fa-xmark"></i> Mentions</a>
         {% endif %}
+        {% if request.user.admin %}
+            {% if notification_options.identity_created %}
+                <a href=".?identity_created=false" class="selected"><i class="fa-solid fa-check"></i> New Identities</a>
+            {% else %}
+                <a href=".?identity_created=true"><i class="fa-solid fa-xmark"></i> New Identities</a>
+            {% endif %}
+        {% endif %}
     </div>
 
     {% for event in events %}

users/services/__init__.py

@@ -1,2 +1,3 @@
 from .announcement import AnnouncementService  # noqa
 from .identity import IdentityService  # noqa
+from .user import UserService  # noqa

users/services/identity.py

@@ -1,8 +1,17 @@
 from django.db import models
 from django.template.defaultfilters import linebreaks_filter
 
+from activities.models import FanOut
 from core.html import strip_html
-from users.models import Block, BlockStates, Follow, FollowStates, Identity
+from users.models import (
+    Block,
+    BlockStates,
+    Domain,
+    Follow,
+    FollowStates,
+    Identity,
+    User,
+)
 
 
 class IdentityService:
@@ -13,6 +22,38 @@ class IdentityService:
     def __init__(self, identity: Identity):
         self.identity = identity
 
+    @classmethod
+    def create(
+        cls,
+        user: User,
+        username: str,
+        domain: Domain,
+        name: str,
+        discoverable: bool = True,
+    ) -> Identity:
+        identity = Identity.objects.create(
+            actor_uri=f"https://{domain.uri_domain}/@{username}@{domain.domain}/",
+            username=username,
+            domain=domain,
+            name=name,
+            local=True,
+            discoverable=discoverable,
+        )
+        identity.users.add(user)
+        identity.generate_keypair()
+        # Send fanouts to all admin identities
+        for admin_identity in cls.admin_identities():
+            FanOut.objects.create(
+                type=FanOut.Types.identity_created,
+                identity=admin_identity,
+                subject_identity=identity,
+            )
+        return identity
+
+    @classmethod
+    def admin_identities(cls) -> models.QuerySet[Identity]:
+        return Identity.objects.filter(users__admin=True).distinct()
+
     def following(self) -> models.QuerySet[Identity]:
         return (
             Identity.objects.filter(inbound_follows__source=self.identity)

users/services/user.py

@@ -0,0 +1,33 @@
+from django.conf import settings
+from django.db import models
+
+from users.models import PasswordReset, User
+
+
+class UserService:
+    """
+    High-level user handling methods
+    """
+
+    @classmethod
+    def admins(cls) -> models.QuerySet[User]:
+        return User.objects.filter(admin=True)
+
+    @classmethod
+    def moderators(cls) -> models.QuerySet[User]:
+        return User.objects.filter(models.Q(moderator=True) | models.Q(admin=True))
+
+    @classmethod
+    def create(cls, email: str) -> User:
+        """
+        Creates a new user
+        """
+        # Make the new user
+        user = User.objects.create(email=email)
+        # Auto-promote the user to admin if that setting is set
+        if settings.AUTO_ADMIN_EMAIL and user.email == settings.AUTO_ADMIN_EMAIL:
+            user.admin = True
+            user.save()
+        # Send them a password reset email
+        PasswordReset.create_for_user(user)
+        return user

users/views/admin/settings.py

@@ -80,6 +80,10 @@ class BasicSettings(AdminSettingsPage):
             "title": "Maximum User Limit",
             "help_text": "Signups will be auto-disabled if your server grows to this many users.\nUse 0 for unlimited.",
         },
+        "signup_email_admins": {
+            "title": "Email admins on signup",
+            "help_text": "Send an email to all admins whenever a new user signs up",
+        },
         "restricted_usernames": {
             "title": "Restricted Usernames",
             "help_text": "Usernames that only admins can register for identities. One per line.",
@@ -120,6 +124,7 @@ class BasicSettings(AdminSettingsPage):
         "Signups": [
             "signup_allowed",
             "signup_max_users",
+            # "signup_email_admins",
             "signup_text",
         ],
         "Posts": [

users/views/auth.py

@@ -1,6 +1,5 @@
 import markdown_it
 from django import forms
-from django.conf import settings
 from django.contrib.auth.forms import AuthenticationForm
 from django.contrib.auth.password_validation import validate_password
 from django.contrib.auth.views import LoginView, LogoutView
@@ -12,6 +11,7 @@ from django.views.generic import FormView
 
 from core.models import Config
 from users.models import Invite, PasswordReset, User
+from users.services import UserService
 
 
 class Login(LoginView):
@@ -99,13 +99,8 @@ class Signup(FormView):
         # Don't allow anything if there's no invite and no signup allowed
         if (not Config.system.signup_allowed or self.at_max_users) and not self.invite:
             return self.render_to_response(self.get_context_data())
-        # Make the new user
-        user = User.objects.create(email=form.cleaned_data["email"])
-        # Auto-promote the user to admin if that setting is set
-        if settings.AUTO_ADMIN_EMAIL and user.email == settings.AUTO_ADMIN_EMAIL:
-            user.admin = True
-            user.save()
-        PasswordReset.create_for_user(user)
+        # Make the user
+        user = UserService.create(email=form.cleaned_data["email"])
         # Drop invite uses down if it has them
         if self.invite and self.invite.uses is not None:
             self.invite.uses -= 1

users/views/identity.py

@@ -381,15 +381,12 @@ class CreateIdentity(FormView):
         username = form.cleaned_data["username"]
         domain = form.cleaned_data["domain"]
         domain_instance = Domain.get_domain(domain)
-        new_identity = Identity.objects.create(
-            actor_uri=f"https://{domain_instance.uri_domain}/@{username}@{domain}/",
+        identity = IdentityService.create(
+            user=self.request.user,
             username=username,
-            domain_id=domain,
+            domain=domain_instance,
             name=form.cleaned_data["name"],
-            local=True,
             discoverable=form.cleaned_data["discoverable"],
         )
-        new_identity.users.add(self.request.user)
-        new_identity.generate_keypair()
-        self.request.session["identity_id"] = new_identity.id
-        return redirect(new_identity.urls.view)
+        self.request.session["identity_id"] = identity.id
+        return redirect(identity.urls.view)