moviewyrm/bookwyrm/models/status.py
2020-11-13 09:59:57 -08:00

334 lines
11 KiB
Python

''' models for storing different kinds of Activities '''
from django.utils import timezone
from django.core.validators import MaxValueValidator, MinValueValidator
from django.db import models
from model_utils.managers import InheritanceManager
from bookwyrm import activitypub
from .base_model import ActivitypubMixin, OrderedCollectionPageMixin
from .base_model import ActivityMapping, BookWyrmModel, PrivacyLevels
class Status(OrderedCollectionPageMixin, BookWyrmModel):
''' any post, like a reply to a review, etc '''
user = models.ForeignKey('User', on_delete=models.PROTECT)
content = models.TextField(blank=True, null=True)
mention_users = models.ManyToManyField('User', related_name='mention_user')
mention_books = models.ManyToManyField(
'Edition', related_name='mention_book')
local = models.BooleanField(default=True)
privacy = models.CharField(
max_length=255,
default='public',
choices=PrivacyLevels.choices
)
sensitive = models.BooleanField(default=False)
# the created date can't be this, because of receiving federated posts
published_date = models.DateTimeField(default=timezone.now)
deleted = models.BooleanField(default=False)
deleted_date = models.DateTimeField(blank=True, null=True)
favorites = models.ManyToManyField(
'User',
symmetrical=False,
through='Favorite',
through_fields=('status', 'user'),
related_name='user_favorites'
)
reply_parent = models.ForeignKey(
'self',
null=True,
on_delete=models.PROTECT
)
objects = InheritanceManager()
# ---- activitypub serialization settings for this model ----- #
@property
def ap_to(self):
''' should be related to post privacy I think '''
return ['https://www.w3.org/ns/activitystreams#Public']
@property
def ap_cc(self):
''' should be related to post privacy I think '''
return [self.user.ap_followers]
@property
def ap_replies(self):
''' structured replies block '''
return self.to_replies()
@property
def ap_tag(self):
''' references to books and/or users '''
tags = []
for book in self.mention_books.all():
tags.append(activitypub.Link(
href=book.remote_id,
name=book.title,
type='Book'
))
for user in self.mention_users.all():
tags.append(activitypub.Mention(
href=user.remote_id,
name=user.username,
))
return tags
@property
def ap_status_image(self):
''' attach a book cover, if relevent '''
if hasattr(self, 'book'):
return self.book.ap_cover
if self.mention_books.first():
return self.mention_books.first().ap_cover
return None
shared_mappings = [
ActivityMapping('url', 'remote_id', lambda x: None),
ActivityMapping('id', 'remote_id'),
ActivityMapping('inReplyTo', 'reply_parent'),
ActivityMapping('published', 'published_date'),
ActivityMapping('attributedTo', 'user'),
ActivityMapping('to', 'ap_to'),
ActivityMapping('cc', 'ap_cc'),
ActivityMapping('replies', 'ap_replies'),
ActivityMapping('tag', 'ap_tag'),
]
# serializing to bookwyrm expanded activitypub
activity_mappings = shared_mappings + [
ActivityMapping('name', 'name'),
ActivityMapping('inReplyToBook', 'book'),
ActivityMapping('rating', 'rating'),
ActivityMapping('quote', 'quote'),
ActivityMapping('content', 'content'),
]
# for serializing to standard activitypub without extended types
pure_activity_mappings = shared_mappings + [
ActivityMapping('name', 'ap_pure_name'),
ActivityMapping('content', 'ap_pure_content'),
ActivityMapping('attachment', 'ap_status_image'),
]
activity_serializer = activitypub.Note
#----- replies collection activitypub ----#
@classmethod
def replies(cls, status):
''' load all replies to a status. idk if there's a better way
to write this so it's just a property '''
return cls.objects.filter(reply_parent=status).select_subclasses()
@property
def status_type(self):
''' expose the type of status for the ui using activity type '''
return self.activity_serializer.__name__
def to_replies(self, **kwargs):
''' helper function for loading AP serialized replies to a status '''
return self.to_ordered_collection(
self.replies(self),
remote_id='%s/replies' % self.remote_id,
**kwargs
)
def to_activity(self, pure=False):
''' return tombstone if the status is deleted '''
if self.deleted:
return activitypub.Tombstone(
id=self.remote_id,
url=self.remote_id,
deleted=self.deleted_date.isoformat(),
published=self.deleted_date.isoformat()
).serialize()
return ActivitypubMixin.to_activity(self, pure=pure)
def save(self, *args, **kwargs):
''' update user active time '''
self.user.last_active_date = timezone.now()
self.user.save()
super().save(*args, **kwargs)
class GeneratedNote(Status):
''' these are app-generated messages about user activity '''
@property
def ap_pure_content(self):
''' indicate the book in question for mastodon (or w/e) users '''
message = self.content
books = ', '.join(
'<a href="%s">"%s"</a>' % (self.book.remote_id, self.book.title) \
for book in self.mention_books.all()
)
return '%s %s' % (message, books)
activity_serializer = activitypub.GeneratedNote
pure_activity_serializer = activitypub.Note
class Comment(Status):
''' like a review but without a rating and transient '''
book = models.ForeignKey('Edition', on_delete=models.PROTECT)
@property
def ap_pure_content(self):
''' indicate the book in question for mastodon (or w/e) users '''
return self.content + '<br><br>(comment on <a href="%s">"%s"</a>)' % \
(self.book.remote_id, self.book.title)
activity_serializer = activitypub.Comment
pure_activity_serializer = activitypub.Note
class Quotation(Status):
''' like a review but without a rating and transient '''
quote = models.TextField()
book = models.ForeignKey('Edition', on_delete=models.PROTECT)
@property
def ap_pure_content(self):
''' indicate the book in question for mastodon (or w/e) users '''
return '"%s"<br>-- <a href="%s">"%s"</a><br><br>%s' % (
self.quote,
self.book.remote_id,
self.book.title,
self.content,
)
activity_serializer = activitypub.Quotation
pure_activity_serializer = activitypub.Note
class Review(Status):
''' a book review '''
name = models.CharField(max_length=255, null=True)
book = models.ForeignKey('Edition', on_delete=models.PROTECT)
rating = models.IntegerField(
default=None,
null=True,
blank=True,
validators=[MinValueValidator(1), MaxValueValidator(5)]
)
@property
def ap_pure_name(self):
''' clarify review names for mastodon serialization '''
if self.rating:
return 'Review of "%s" (%d stars): %s' % (
self.book.title,
self.rating,
self.name
)
return 'Review of "%s": %s' % (
self.book.title,
self.name
)
@property
def ap_pure_content(self):
''' indicate the book in question for mastodon (or w/e) users '''
return self.content + '<br><br>(<a href="%s">"%s"</a>)' % \
(self.book.remote_id, self.book.title)
activity_serializer = activitypub.Review
pure_activity_serializer = activitypub.Article
class Favorite(ActivitypubMixin, BookWyrmModel):
''' fav'ing a post '''
user = models.ForeignKey('User', on_delete=models.PROTECT)
status = models.ForeignKey('Status', on_delete=models.PROTECT)
# ---- activitypub serialization settings for this model ----- #
activity_mappings = [
ActivityMapping('id', 'remote_id'),
ActivityMapping('actor', 'user'),
ActivityMapping('object', 'status'),
]
activity_serializer = activitypub.Like
def save(self, *args, **kwargs):
''' update user active time '''
self.user.last_active_date = timezone.now()
self.user.save()
super().save(*args, **kwargs)
class Meta:
''' can't fav things twice '''
unique_together = ('user', 'status')
class Boost(Status):
''' boost'ing a post '''
boosted_status = models.ForeignKey(
'Status',
on_delete=models.PROTECT,
related_name="boosters")
activity_mappings = [
ActivityMapping('id', 'remote_id'),
ActivityMapping('actor', 'user'),
ActivityMapping('object', 'boosted_status'),
]
activity_serializer = activitypub.Boost
# This constraint can't work as it would cross tables.
# class Meta:
# unique_together = ('user', 'boosted_status')
class ReadThrough(BookWyrmModel):
''' Store progress through a book in the database. '''
user = models.ForeignKey('User', on_delete=models.PROTECT)
book = models.ForeignKey('Book', on_delete=models.PROTECT)
pages_read = models.IntegerField(
null=True,
blank=True)
start_date = models.DateTimeField(
blank=True,
null=True)
finish_date = models.DateTimeField(
blank=True,
null=True)
def save(self, *args, **kwargs):
''' update user active time '''
self.user.last_active_date = timezone.now()
self.user.save()
super().save(*args, **kwargs)
NotificationType = models.TextChoices(
'NotificationType',
'FAVORITE REPLY MENTION TAG FOLLOW FOLLOW_REQUEST BOOST IMPORT')
class Notification(BookWyrmModel):
''' you've been tagged, liked, followed, etc '''
user = models.ForeignKey('User', on_delete=models.PROTECT)
related_book = models.ForeignKey(
'Edition', on_delete=models.PROTECT, null=True)
related_user = models.ForeignKey(
'User',
on_delete=models.PROTECT, null=True, related_name='related_user')
related_status = models.ForeignKey(
'Status', on_delete=models.PROTECT, null=True)
related_import = models.ForeignKey(
'ImportJob', on_delete=models.PROTECT, null=True)
read = models.BooleanField(default=False)
notification_type = models.CharField(
max_length=255, choices=NotificationType.choices)
class Meta:
''' checks if notifcation is in enum list for valid types '''
constraints = [
models.CheckConstraint(
check=models.Q(notification_type__in=NotificationType.values),
name="notification_type_valid",
)
]