feat: add user notification preference model

openedx/core/djangoapps/notifications/admin.py

@@ -4,10 +4,15 @@ Django Admin for Notifications
 
 from django.contrib import admin
 
-from .models import Notification
+from .models import Notification, NotificationPreference
 
 
 class NotificationAdmin(admin.ModelAdmin):
     pass
 
+
+class NotificationPreferenceAdmin(admin.ModelAdmin):
+    pass
+
 admin.site.register(Notification, NotificationAdmin)
+admin.site.register(NotificationPreference, NotificationPreferenceAdmin)

openedx/core/djangoapps/notifications/migrations/0002_notificationpreference.py

@@ -0,0 +1,35 @@
+# Generated by Django 3.2.18 on 2023-05-03 09:05
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import model_utils.fields
+import opaque_keys.edx.django.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('notifications', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='NotificationPreference',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created', model_utils.fields.AutoCreatedField(default=django.utils.timezone.now, editable=False, verbose_name='created')),
+                ('modified', model_utils.fields.AutoLastModifiedField(default=django.utils.timezone.now, editable=False, verbose_name='modified')),
+                ('course_id', opaque_keys.edx.django.models.CourseKeyField(blank=True, default=None, max_length=255)),
+                ('notification_preference_config', models.JSONField(default={'discussion': {'new_post': {'email': False, 'push': False, 'web': False}}})),
+                ('config_version', models.IntegerField(blank=True, default=1)),
+                ('is_active', models.BooleanField(default=True)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='notification_preferences', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

openedx/core/djangoapps/notifications/models.py

@@ -5,6 +5,22 @@ from django.contrib.auth.models import User  # lint-amnesty, pylint: disable=imp
 from django.db import models
 from model_utils.models import TimeStampedModel
 
+from opaque_keys.edx.django.models import CourseKeyField
+
+
+# When notification preferences are updated, we need to update the CONFIG_VERSION.
+NOTIFICATION_PREFERENCE_CONFIG = {
+    "discussion": {
+        "new_post": {
+            "web": False,
+            "push": False,
+            "email": False,
+        },
+    },
+}
+# Update this version when NOTIFICATION_PREFERENCE_CONFIG is updated.
+CONFIG_VERSION = 1
+
 
 class NotificationApplication(models.TextChoices):
     """
@@ -62,3 +78,35 @@ class Notification(TimeStampedModel):
 
     def get_user(self):
         return self.user
+
+
+class NotificationPreference(TimeStampedModel):
+    """
+    Model to store notification preferences for users
+
+    .. no_pii:
+    """
+    user = models.ForeignKey(User, related_name="notification_preferences", on_delete=models.CASCADE)
+    course_id = CourseKeyField(max_length=255, blank=True, default=None)
+    notification_preference_config = models.JSONField(default=NOTIFICATION_PREFERENCE_CONFIG)
+    # This version indicates the current version of this notification preference.
+    config_version = models.IntegerField(blank=True, default=1)
+    is_active = models.BooleanField(default=True)
+
+    def __str__(self):
+        return f'{self.user.username} - {self.course_id} - {self.notification_preference_config}'
+
+    def get_user(self):
+        return self.user
+
+    def get_course_id(self):
+        return self.course_id
+
+    def get_notification_preference_config(self):
+        return self.notification_preference_config
+
+    def get_config_version(self):
+        return self.config_version
+
+    def get_is_active(self):
+        return self.is_active