Merge branch 'main' into pylint

bookwyrm/models/book.py

@@ -2,10 +2,14 @@
 import re
 
 from django.db import models
+from django.dispatch import receiver
+from model_utils import FieldTracker
 from model_utils.managers import InheritanceManager
 
 from bookwyrm import activitypub
+from bookwyrm.preview_images import generate_edition_preview_image_task
 from bookwyrm.settings import DOMAIN, DEFAULT_LANGUAGE
+from bookwyrm.tasks import app
 
 from .activitypub_mixin import OrderedCollectionPageMixin, ObjectMixin
 from .base_model import BookWyrmModel
@@ -82,10 +86,14 @@ class Book(BookDataModel):
     cover = fields.ImageField(
         upload_to="covers/", blank=True, null=True, alt_field="alt_text"
     )
+    preview_image = models.ImageField(
+        upload_to="previews/covers/", blank=True, null=True
+    )
     first_published_date = fields.DateTimeField(blank=True, null=True)
     published_date = fields.DateTimeField(blank=True, null=True)
 
     objects = InheritanceManager()
+    field_tracker = FieldTracker(fields=["authors", "title", "subtitle", "cover"])
 
     @property
     def author_text(self):
@@ -293,3 +301,14 @@ def isbn_13_to_10(isbn_13):
     if checkdigit == 10:
         checkdigit = "X"
     return converted + str(checkdigit)
+
+
+@receiver(models.signals.post_save, sender=Edition)
+# pylint: disable=unused-argument
+def preview_image(instance, *args, **kwargs):
+    changed_fields = {}
+    if instance.field_tracker:
+        changed_fields = instance.field_tracker.changed()
+
+    if len(changed_fields) > 0:
+        generate_edition_preview_image_task.delay(instance.id)

bookwyrm/models/site.py

@@ -4,9 +4,13 @@ import datetime
 
 from Crypto import Random
 from django.db import models, IntegrityError
+from django.dispatch import receiver
 from django.utils import timezone
+from model_utils import FieldTracker
 
+from bookwyrm.preview_images import generate_site_preview_image_task
 from bookwyrm.settings import DOMAIN
+from bookwyrm.tasks import app
 from .base_model import BookWyrmModel
 from .user import User
 
@@ -35,6 +39,9 @@ class SiteSettings(models.Model):
     logo = models.ImageField(upload_to="logos/", null=True, blank=True)
     logo_small = models.ImageField(upload_to="logos/", null=True, blank=True)
     favicon = models.ImageField(upload_to="logos/", null=True, blank=True)
+    preview_image = models.ImageField(
+        upload_to="previews/logos/", null=True, blank=True
+    )
 
     # footer
     support_link = models.CharField(max_length=255, null=True, blank=True)
@@ -42,6 +49,8 @@ class SiteSettings(models.Model):
     admin_email = models.EmailField(max_length=255, null=True, blank=True)
     footer_item = models.TextField(null=True, blank=True)
 
+    field_tracker = FieldTracker(fields=["name", "instance_tagline", "logo"])
+
     @classmethod
     def get(cls):
         """gets the site settings db entry or defaults"""
@@ -119,3 +128,12 @@ class PasswordReset(models.Model):
     def link(self):
         """formats the invite link"""
         return "https://{}/password-reset/{}".format(DOMAIN, self.code)
+
+
+@receiver(models.signals.post_save, sender=SiteSettings)
+# pylint: disable=unused-argument
+def preview_image(instance, *args, **kwargs):
+    changed_fields = instance.field_tracker.changed()
+
+    if len(changed_fields) > 0:
+        generate_site_preview_image_task.delay()

bookwyrm/models/status.py

@@ -5,11 +5,14 @@ import re
 from django.apps import apps
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.db import models
+from django.dispatch import receiver
 from django.template.loader import get_template
 from django.utils import timezone
+from model_utils import FieldTracker
 from model_utils.managers import InheritanceManager
 
 from bookwyrm import activitypub
+from bookwyrm.preview_images import generate_edition_preview_image_task
 from .activitypub_mixin import ActivitypubMixin, ActivityMixin
 from .activitypub_mixin import OrderedCollectionPageMixin
 from .base_model import BookWyrmModel
@@ -304,6 +307,8 @@ class Review(Status):
         max_digits=3,
     )
 
+    field_tracker = FieldTracker(fields=["rating"])
+
     @property
     def pure_name(self):
         """clarify review names for mastodon serialization"""
@@ -398,3 +403,14 @@ class Boost(ActivityMixin, Status):
     # This constraint can't work as it would cross tables.
     # class Meta:
     #     unique_together = ('user', 'boosted_status')
+
+
+@receiver(models.signals.post_save)
+# pylint: disable=unused-argument
+def preview_image(instance, sender, *args, **kwargs):
+    if sender in (Review, ReviewRating):
+        changed_fields = instance.field_tracker.changed()
+
+        if len(changed_fields) > 0:
+            edition = instance.book
+            generate_edition_preview_image_task.delay(edition.id)

bookwyrm/models/user.py

@@ -6,14 +6,17 @@ 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
 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
 from bookwyrm.signatures import create_key_pair
 from bookwyrm.tasks import app
@@ -70,6 +73,9 @@ class User(OrderedCollectionPageMixin, AbstractUser):
         activitypub_field="icon",
         alt_field="alt_text",
     )
+    preview_image = models.ImageField(
+        upload_to="previews/avatars/", blank=True, null=True
+    )
     followers = fields.ManyToManyField(
         "self",
         link_only=True,
@@ -117,6 +123,7 @@ class User(OrderedCollectionPageMixin, AbstractUser):
 
     name_field = "username"
     property_fields = [("following_link", "following")]
+    field_tracker = FieldTracker(fields=["name", "avatar"])
 
     @property
     def following_link(self):
@@ -443,3 +450,12 @@ def get_remote_reviews(outbox):
         if not activity["type"] == "Review":
             continue
         activitypub.Review(**activity).to_model()
+
+
+@receiver(models.signals.post_save, sender=User)
+# pylint: disable=unused-argument
+def preview_image(instance, *args, **kwargs):
+    changed_fields = instance.field_tracker.changed()
+
+    if len(changed_fields) > 0:
+        generate_user_preview_image_task.delay(instance.id)