Implement dark theme (#49)

bookmarks/migrations/0007_userprofile.py

@@ -0,0 +1,43 @@
+# Generated by Django 2.2.18 on 2021-03-26 22:39
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+def forwards(apps, schema_editor):
+    User = apps.get_model('auth', 'User')
+    UserProfile = apps.get_model('bookmarks', 'UserProfile')
+    for user in User.objects.all():
+        try:
+            if user.profile:
+                continue
+        except UserProfile.DoesNotExist:
+            profile = UserProfile(user=user)
+            profile.save()
+
+
+def reverse(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('bookmarks', '0006_bookmark_is_archived'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='UserProfile',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('theme',
+                 models.CharField(choices=[('auto', 'Auto'), ('light', 'Light'), ('dark', 'Dark')], default='auto',
+                                  max_length=10)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='profile',
+                                              to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.RunPython(forwards, reverse),
+    ]