moviewyrm/bookwyrm/models/user.py
2021-09-11 14:23:47 -07:00

499 lines
17 KiB
Python

""" database schema for user data """
import re
from urllib.parse import urlparse
from django.apps import apps
from django.contrib.auth.models import AbstractUser, Group
from django.contrib.postgres.fields import CICharField
from django.core.validators import MinValueValidator
from django.dispatch import receiver
from django.db import models, transaction
from django.utils import timezone
from model_utils import FieldTracker
import pytz
from bookwyrm import activitypub
from bookwyrm.connectors import get_data, ConnectorException
from bookwyrm.models.shelf import Shelf
from bookwyrm.models.status import Status, Review
from bookwyrm.preview_images import generate_user_preview_image_task
from bookwyrm.settings import DOMAIN, ENABLE_PREVIEW_IMAGES, USE_HTTPS
from bookwyrm.signatures import create_key_pair
from bookwyrm.tasks import app
from bookwyrm.utils import regex
from .activitypub_mixin import OrderedCollectionPageMixin, ActivitypubMixin
from .base_model import BookWyrmModel, DeactivationReason, new_access_code
from .federated_server import FederatedServer
from . import fields, Review
def site_link():
"""helper for generating links to the site"""
protocol = "https" if USE_HTTPS else "http"
return f"{protocol}://{DOMAIN}"
class User(OrderedCollectionPageMixin, AbstractUser):
"""a user who wants to read books"""
username = fields.UsernameField()
email = models.EmailField(unique=True, null=True)
key_pair = fields.OneToOneField(
"KeyPair",
on_delete=models.CASCADE,
blank=True,
null=True,
activitypub_field="publicKey",
related_name="owner",
)
inbox = fields.RemoteIdField(unique=True)
shared_inbox = fields.RemoteIdField(
activitypub_field="sharedInbox",
activitypub_wrapper="endpoints",
deduplication_field=False,
null=True,
)
federated_server = models.ForeignKey(
"FederatedServer",
on_delete=models.PROTECT,
null=True,
blank=True,
)
outbox = fields.RemoteIdField(unique=True, null=True)
summary = fields.HtmlField(null=True, blank=True)
local = models.BooleanField(default=False)
bookwyrm_user = fields.BooleanField(default=True)
localname = CICharField(
max_length=255,
null=True,
unique=True,
validators=[fields.validate_localname],
)
# name is your display name, which you can change at will
name = fields.CharField(max_length=100, null=True, blank=True)
avatar = fields.ImageField(
upload_to="avatars/",
blank=True,
null=True,
activitypub_field="icon",
alt_field="alt_text",
)
preview_image = models.ImageField(
upload_to="previews/avatars/", blank=True, null=True
)
followers_url = fields.CharField(max_length=255, activitypub_field="followers")
followers = models.ManyToManyField(
"self",
symmetrical=False,
through="UserFollows",
through_fields=("user_object", "user_subject"),
related_name="following",
)
follow_requests = models.ManyToManyField(
"self",
symmetrical=False,
through="UserFollowRequest",
through_fields=("user_subject", "user_object"),
related_name="follower_requests",
)
blocks = models.ManyToManyField(
"self",
symmetrical=False,
through="UserBlocks",
through_fields=("user_subject", "user_object"),
related_name="blocked_by",
)
saved_lists = models.ManyToManyField(
"List", symmetrical=False, related_name="saved_lists", blank=True
)
favorites = models.ManyToManyField(
"Status",
symmetrical=False,
through="Favorite",
through_fields=("user", "status"),
related_name="favorite_statuses",
)
default_post_privacy = models.CharField(
max_length=255, default="public", choices=fields.PrivacyLevels.choices
)
remote_id = fields.RemoteIdField(null=True, unique=True, activitypub_field="id")
created_date = models.DateTimeField(auto_now_add=True)
updated_date = models.DateTimeField(auto_now=True)
last_active_date = models.DateTimeField(default=timezone.now)
manually_approves_followers = fields.BooleanField(default=False)
# options to turn features on and off
show_goal = models.BooleanField(default=True)
show_suggested_users = models.BooleanField(default=True)
discoverable = fields.BooleanField(default=False)
preferred_timezone = models.CharField(
choices=[(str(tz), str(tz)) for tz in pytz.all_timezones],
default=str(pytz.utc),
max_length=255,
)
deactivation_reason = models.CharField(
max_length=255, choices=DeactivationReason, null=True, blank=True
)
deactivation_date = models.DateTimeField(null=True, blank=True)
confirmation_code = models.CharField(max_length=32, default=new_access_code)
name_field = "username"
property_fields = [("following_link", "following")]
field_tracker = FieldTracker(fields=["name", "avatar"])
@property
def confirmation_link(self):
"""helper for generating confirmation links"""
link = site_link()
return f"{link}/confirm-email/{self.confirmation_code}"
@property
def following_link(self):
"""just how to find out the following info"""
return "{:s}/following".format(self.remote_id)
@property
def alt_text(self):
"""alt text with username"""
return "avatar for %s" % (self.localname or self.username)
@property
def display_name(self):
"""show the cleanest version of the user's name possible"""
if self.name and self.name != "":
return self.name
return self.localname or self.username
@property
def deleted(self):
"""for consistent naming"""
return not self.is_active
@property
def unread_notification_count(self):
"""count of notifications, for the templates"""
return self.notification_set.filter(read=False).count()
@property
def has_unread_mentions(self):
"""whether any of the unread notifications are conversations"""
return self.notification_set.filter(
read=False,
notification_type__in=["REPLY", "MENTION", "TAG", "REPORT"],
).exists()
activity_serializer = activitypub.Person
@classmethod
def viewer_aware_objects(cls, viewer):
"""the user queryset filtered for the context of the logged in user"""
queryset = cls.objects.filter(is_active=True)
if viewer and viewer.is_authenticated:
queryset = queryset.exclude(blocks=viewer)
return queryset
def to_outbox(self, filter_type=None, **kwargs):
"""an ordered collection of statuses"""
if filter_type:
filter_class = apps.get_model(
"bookwyrm.%s" % filter_type, require_ready=True
)
if not issubclass(filter_class, Status):
raise TypeError(
"filter_status_class must be a subclass of models.Status"
)
queryset = filter_class.objects
else:
queryset = Status.objects
queryset = (
queryset.filter(
user=self,
deleted=False,
privacy__in=["public", "unlisted"],
)
.select_subclasses()
.order_by("-published_date")
)
return self.to_ordered_collection(
queryset, collection_only=True, remote_id=self.outbox, **kwargs
).serialize()
def to_following_activity(self, **kwargs):
"""activitypub following list"""
remote_id = "%s/following" % self.remote_id
return self.to_ordered_collection(
self.following.order_by("-updated_date").all(),
remote_id=remote_id,
id_only=True,
**kwargs,
)
def to_followers_activity(self, **kwargs):
"""activitypub followers list"""
remote_id = self.followers_url
return self.to_ordered_collection(
self.followers.order_by("-updated_date").all(),
remote_id=remote_id,
id_only=True,
**kwargs,
)
def to_activity(self, **kwargs):
"""override default AP serializer to add context object
idk if this is the best way to go about this"""
if not self.is_active:
return self.remote_id
activity_object = super().to_activity(**kwargs)
activity_object["@context"] = [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1",
{
"manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
"schema": "http://schema.org#",
"PropertyValue": "schema:PropertyValue",
"value": "schema:value",
},
]
return activity_object
def save(self, *args, **kwargs):
"""populate fields for new local users"""
created = not bool(self.id)
if not self.local and not re.match(regex.FULL_USERNAME, self.username):
# generate a username that uses the domain (webfinger format)
actor_parts = urlparse(self.remote_id)
self.username = "%s@%s" % (self.username, actor_parts.netloc)
# this user already exists, no need to populate fields
if not created:
if self.is_active:
self.deactivation_date = None
elif not self.deactivation_date:
self.deactivation_date = timezone.now()
super().save(*args, **kwargs)
return
# this is a new remote user, we need to set their remote server field
if not self.local:
super().save(*args, **kwargs)
transaction.on_commit(lambda: set_remote_server.delay(self.id))
return
with transaction.atomic():
# populate fields for local users
link = site_link()
self.remote_id = f"{link}/user/{self.localname}"
self.followers_url = f"{self.remote_id}/followers"
self.inbox = f"{self.remote_id}/inbox"
self.shared_inbox = f"{link}/inbox"
self.outbox = f"{self.remote_id}/outbox"
# an id needs to be set before we can proceed with related models
super().save(*args, **kwargs)
# make users editors by default
try:
self.groups.add(Group.objects.get(name="editor"))
except Group.DoesNotExist:
# this should only happen in tests
pass
# create keys and shelves for new local users
self.key_pair = KeyPair.objects.create(
remote_id=f"{self.remote_id}/#main-key"
)
self.save(broadcast=False, update_fields=["key_pair"])
self.create_shelves()
def delete(self, *args, **kwargs):
"""deactivate rather than delete a user"""
self.is_active = False
# skip the logic in this class's save()
super().save(*args, **kwargs)
@property
def local_path(self):
"""this model doesn't inherit bookwyrm model, so here we are"""
return "/user/%s" % (self.localname or self.username)
def create_shelves(self):
"""default shelves for a new user"""
shelves = [
{
"name": "To Read",
"identifier": "to-read",
},
{
"name": "Currently Reading",
"identifier": "reading",
},
{
"name": "Read",
"identifier": "read",
},
]
for shelf in shelves:
Shelf(
name=shelf["name"],
identifier=shelf["identifier"],
user=self,
editable=False,
).save(broadcast=False)
class KeyPair(ActivitypubMixin, BookWyrmModel):
"""public and private keys for a user"""
private_key = models.TextField(blank=True, null=True)
public_key = fields.TextField(
blank=True, null=True, activitypub_field="publicKeyPem"
)
activity_serializer = activitypub.PublicKey
serialize_reverse_fields = [("owner", "owner", "id")]
def get_remote_id(self):
# self.owner is set by the OneToOneField on User
return "%s/#main-key" % self.owner.remote_id
def save(self, *args, **kwargs):
"""create a key pair"""
# no broadcasting happening here
if "broadcast" in kwargs:
del kwargs["broadcast"]
if not self.public_key:
self.private_key, self.public_key = create_key_pair()
return super().save(*args, **kwargs)
def to_activity(self, **kwargs):
"""override default AP serializer to add context object
idk if this is the best way to go about this"""
activity_object = super().to_activity(**kwargs)
del activity_object["@context"]
del activity_object["type"]
return activity_object
class AnnualGoal(BookWyrmModel):
"""set a goal for how many books you read in a year"""
user = models.ForeignKey("User", on_delete=models.PROTECT)
goal = models.IntegerField(validators=[MinValueValidator(1)])
year = models.IntegerField(default=timezone.now().year)
privacy = models.CharField(
max_length=255, default="public", choices=fields.PrivacyLevels.choices
)
class Meta:
"""unqiueness constraint"""
unique_together = ("user", "year")
def get_remote_id(self):
"""put the year in the path"""
return "{:s}/goal/{:d}".format(self.user.remote_id, self.year)
@property
def books(self):
"""the books you've read this year"""
return (
self.user.readthrough_set.filter(
finish_date__year__gte=self.year,
finish_date__year__lt=self.year + 1,
)
.order_by("-finish_date")
.all()
)
@property
def ratings(self):
"""ratings for books read this year"""
book_ids = [r.book.id for r in self.books]
reviews = Review.objects.filter(
user=self.user,
book__in=book_ids,
)
return {r.book.id: r.rating for r in reviews}
@property
def progress(self):
"""how many books you've read this year"""
count = self.user.readthrough_set.filter(
finish_date__year__gte=self.year,
finish_date__year__lt=self.year + 1,
).count()
return {
"count": count,
"percent": int(float(count / self.goal) * 100),
}
@app.task(queue="low_priority")
def set_remote_server(user_id):
"""figure out the user's remote server in the background"""
user = User.objects.get(id=user_id)
actor_parts = urlparse(user.remote_id)
user.federated_server = get_or_create_remote_server(actor_parts.netloc)
user.save(broadcast=False, update_fields=["federated_server"])
if user.bookwyrm_user and user.outbox:
get_remote_reviews.delay(user.outbox)
def get_or_create_remote_server(domain):
"""get info on a remote server"""
try:
return FederatedServer.objects.get(server_name=domain)
except FederatedServer.DoesNotExist:
pass
try:
data = get_data("https://%s/.well-known/nodeinfo" % domain)
try:
nodeinfo_url = data.get("links")[0].get("href")
except (TypeError, KeyError):
raise ConnectorException()
data = get_data(nodeinfo_url)
application_type = data.get("software", {}).get("name")
application_version = data.get("software", {}).get("version")
except ConnectorException:
application_type = application_version = None
server = FederatedServer.objects.create(
server_name=domain,
application_type=application_type,
application_version=application_version,
)
return server
@app.task(queue="low_priority")
def get_remote_reviews(outbox):
"""ingest reviews by a new remote bookwyrm user"""
outbox_page = outbox + "?page=true&type=Review"
data = get_data(outbox_page)
# TODO: pagination?
for activity in data["orderedItems"]:
if not activity["type"] == "Review":
continue
activitypub.Review(**activity).to_model()
# pylint: disable=unused-argument
@receiver(models.signals.post_save, sender=User)
def preview_image(instance, *args, **kwargs):
"""create preview images when user is updated"""
if not ENABLE_PREVIEW_IMAGES:
return
changed_fields = instance.field_tracker.changed()
if len(changed_fields) > 0:
generate_user_preview_image_task.delay(instance.id)