forked from mirrors/bookwyrm
246 lines
8.4 KiB
Python
246 lines
8.4 KiB
Python
''' database schema for the whole dang thing '''
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from django.db import models
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from model_utils.managers import InheritanceManager
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from django.dispatch import receiver
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from django.contrib.auth.models import AbstractUser
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from django.contrib.postgres.fields import JSONField
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from django.core.exceptions import ValidationError
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from Crypto import Random
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from Crypto.PublicKey import RSA
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import re
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from fedireads.settings import DOMAIN, OL_URL
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class User(AbstractUser):
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''' a user who wants to read books '''
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private_key = models.TextField(blank=True, null=True)
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public_key = models.TextField(blank=True, null=True)
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api_key = models.CharField(max_length=255, blank=True, null=True)
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actor = models.CharField(max_length=255, unique=True)
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inbox = models.CharField(max_length=255, unique=True)
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shared_inbox = models.CharField(max_length=255, blank=True, null=True)
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federated_server = models.ForeignKey(
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'FederatedServer',
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on_delete=models.PROTECT,
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null=True,
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)
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outbox = models.CharField(max_length=255, unique=True)
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summary = models.TextField(blank=True, null=True)
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local = models.BooleanField(default=True)
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localname = models.CharField(
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max_length=255,
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null=True,
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unique=True
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)
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# name is your display name, which you can change at will
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name = models.CharField(max_length=100, blank=True, null=True)
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avatar = models.ImageField(upload_to='avatars/', blank=True, null=True)
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followers = models.ManyToManyField('self', symmetrical=False)
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created_date = models.DateTimeField(auto_now_add=True)
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updated_date = models.DateTimeField(auto_now=True)
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@receiver(models.signals.pre_save, sender=User)
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def execute_before_save(sender, instance, *args, **kwargs):
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''' create shelves for new users '''
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# this user already exists, no need to poplate fields
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if instance.id or not instance.local:
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return
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# populate fields for local users
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instance.localname = instance.username
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instance.username = '%s@%s' % (instance.username, DOMAIN)
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instance.actor = 'https://%s/user/%s' % (DOMAIN, instance.localname)
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instance.inbox = 'https://%s/user/%s/inbox' % (DOMAIN, instance.localname)
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instance.shared_inbox = 'https://%s/inbox' % DOMAIN
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instance.outbox = 'https://%s/user/%s/outbox' % (DOMAIN, instance.localname)
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if not instance.private_key:
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random_generator = Random.new().read
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key = RSA.generate(1024, random_generator)
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instance.private_key = key.export_key().decode('utf8')
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instance.public_key = key.publickey().export_key().decode('utf8')
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@receiver(models.signals.post_save, sender=User)
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def execute_after_save(sender, instance, created, *args, **kwargs):
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''' create shelves for new users '''
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# TODO: how are remote users handled? what if they aren't readers?
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if not instance.local or not created:
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return
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shelves = [{
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'name': 'To Read',
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'type': 'to-read',
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}, {
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'name': 'Currently Reading',
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'type': 'reading',
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}, {
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'name': 'Read',
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'type': 'read',
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}]
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for shelf in shelves:
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Shelf(
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name=shelf['name'],
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shelf_type=shelf['type'],
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user=instance,
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editable=False
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).save()
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class FederatedServer(models.Model):
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''' store which server's we federate with '''
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server_name = models.CharField(max_length=255, unique=True)
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shared_inbox = models.CharField(max_length=255, unique=True)
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# federated, blocked, whatever else
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status = models.CharField(max_length=255, default='federated')
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# is it mastodon, fedireads, etc
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application_type = models.CharField(max_length=255, null=True)
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class Activity(models.Model):
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''' basic fields for storing activities '''
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uuid = models.CharField(max_length=255, unique=True)
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user = models.ForeignKey('User', on_delete=models.PROTECT)
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content = JSONField(max_length=5000)
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# the activitypub activity type (Create, Add, Follow, ...)
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activity_type = models.CharField(max_length=255)
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# custom types internal to fedireads (Review, Shelve, ...)
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fedireads_type = models.CharField(max_length=255, blank=True, null=True)
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created_date = models.DateTimeField(auto_now_add=True)
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updated_date = models.DateTimeField(auto_now=True)
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objects = InheritanceManager()
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class ShelveActivity(Activity):
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''' someone put a book on a shelf '''
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book = models.ForeignKey('Book', on_delete=models.PROTECT)
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shelf = models.ForeignKey('Shelf', on_delete=models.PROTECT)
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def save(self, *args, **kwargs):
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if not self.activity_type:
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self.activity_type = 'Add'
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self.fedireads_type = 'Shelve'
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super().save(*args, **kwargs)
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class FollowActivity(Activity):
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''' record follow requests sent out '''
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followed = models.ForeignKey(
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'User',
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related_name='followed',
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on_delete=models.PROTECT
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)
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def save(self, *args, **kwargs):
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self.activity_type = 'Follow'
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super().save(*args, **kwargs)
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def validate_rating(rating):
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''' only accept 0-5 as star rating ints '''
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if rating < 0 or rating > 5:
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raise ValidationError('Rating must be 0-5')
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class Review(Activity):
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''' a book review '''
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book = models.ForeignKey('Book', on_delete=models.PROTECT)
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name = models.CharField(max_length=255)
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rating = models.IntegerField(default=0, validators=[validate_rating])
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review_content = models.TextField()
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def save(self, *args, **kwargs):
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self.activity_type = 'Article'
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self.fedireads_type = 'Review'
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super().save(*args, **kwargs)
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class Note(Activity):
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''' reply to a review, etc '''
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def save(self, *args, **kwargs):
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self.activity_type = 'Note'
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super().save(*args, **kwargs)
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class Shelf(models.Model):
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activitypub_id = models.CharField(max_length=255)
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identifier = models.CharField(max_length=255, unique=True)
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name = models.CharField(max_length=100)
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user = models.ForeignKey('User', on_delete=models.PROTECT)
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editable = models.BooleanField(default=True)
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shelf_type = models.CharField(default='custom', max_length=100)
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books = models.ManyToManyField(
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'Book',
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symmetrical=False,
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through='ShelfBook',
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through_fields=('shelf', 'book')
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)
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created_date = models.DateTimeField(auto_now_add=True)
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updated_date = models.DateTimeField(auto_now=True)
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class Meta:
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unique_together = ('user', 'name')
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def save(self, *args, **kwargs):
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if not self.identifier:
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self.identifier = '%s_%s' % (
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self.user.localname,
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re.sub(r'\W', '-', self.name).lower()
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)
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if not self.activitypub_id:
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self.activitypub_id = 'https://%s/shelf/%s' % \
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(DOMAIN, self.identifier)
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super().save(*args, **kwargs)
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class ShelfBook(models.Model):
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# many to many join table for books and shelves
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book = models.ForeignKey('Book', on_delete=models.PROTECT)
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shelf = models.ForeignKey('Shelf', on_delete=models.PROTECT)
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added_by = models.ForeignKey(
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'User',
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blank=True,
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null=True,
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on_delete=models.PROTECT
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)
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added_date = models.DateTimeField(auto_now_add=True)
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class Meta:
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unique_together = ('book', 'shelf')
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class Book(models.Model):
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''' a non-canonical copy of a work (not book) from open library '''
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activitypub_id = models.CharField(max_length=255)
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openlibrary_key = models.CharField(max_length=255, unique=True)
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data = JSONField()
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authors = models.ManyToManyField('Author')
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# TODO: also store cover thumbnail
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cover = models.ImageField(upload_to='covers/', blank=True, null=True)
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shelves = models.ManyToManyField(
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'Shelf',
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symmetrical=False,
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through='ShelfBook',
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through_fields=('book', 'shelf')
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)
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added_by = models.ForeignKey(
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'User',
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blank=True,
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null=True,
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on_delete=models.PROTECT
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)
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added_date = models.DateTimeField(auto_now_add=True)
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updated_date = models.DateTimeField(auto_now=True)
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def save(self, *args, **kwargs):
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self.activitypub_id = '%s%s' % (OL_URL, self.openlibrary_key)
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super().save(*args, **kwargs)
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class Author(models.Model):
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openlibrary_key = models.CharField(max_length=255)
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data = JSONField()
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added_date = models.DateTimeField(auto_now_add=True)
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updated_date = models.DateTimeField(auto_now=True)
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