Bookmarks sync

[wolnelektury.git] / src / bookmarks / models.py

diff --git a/src/bookmarks/models.py b/src/bookmarks/models.py
index 88b3e85..583cd55 100644 (file)
--- a/src/bookmarks/models.py
+++ b/src/bookmarks/models.py
@@ -1,20 +1,65 @@
 import uuid
+from django.apps import apps
 from django.db import models
+from django.utils.timezone import now
+from social.syncable import Syncable
 
 
-class Bookmark(models.Model):
+class Bookmark(Syncable, models.Model):
     uuid = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
     user = models.ForeignKey('auth.User', models.CASCADE)
     book = models.ForeignKey('catalogue.Book', models.CASCADE)
     anchor = models.CharField(max_length=100, blank=True)
     created_at = models.DateTimeField(auto_now_add=True)
     note = models.TextField(blank=True)
+    updated_at = models.DateTimeField(auto_now=True)
+    reported_timestamp = models.DateTimeField(default=now)
+    deleted = models.BooleanField(default=False)
+
+    syncable_fields = [
+        'deleted', 'note',
+    ]
 
     def __str__(self):
         return str(self.uuid)
 
+    @classmethod
+    def create_from_data(cls, user, data):
+        if data.get('location'):
+            return cls.get_by_location(user, data['location'], create=True)
+        elif data.get('book') and data.get('anchor'):
+            return cls.objects.create(user=user, book=data['book'], anchor=data['anchor'])
+    
+    @property
+    def timestamp(self):
+        return self.updated_at.timestamp()
+    
     def location(self):
         return f'{self.book.slug}/{self.anchor}'
+
+    @classmethod
+    def get_by_location(cls, user, location, create=False):
+        Book = apps.get_model('catalogue', 'Book')
+        try:
+            slug, anchor = location.split('/')
+        except:
+            return None
+        instance = cls.objects.filter(
+            user=user,
+            book__slug=slug,
+            anchor=anchor
+        ).first()
+        if instance is None and create:
+            try:
+                book = Book.objects.get(slug=slug)
+            except Book.DoesNotExist:
+                return None
+            instance = cls.objects.create(
+                user=user,
+                book=book,
+                anchor=anchor
+            )
+        return instance
     
     def get_for_json(self):
         return {