Files
zulip/zerver/migrations/0740_pushdevicetoken_apns_case_insensitive.py
Alex Vandiver 2f4dd72076 push_notifications: Adjust APNs tokens to be case-insensitive in the database.
APNs apparently treats its tokens case-insensitively; FCM does not.
Adjust the `unique_together` to instead be separate partial
constraints, keyed on the `kind` of the PushDeviceToken.
2025-07-22 14:30:13 -07:00

72 lines
2.6 KiB
Python

import django.db.models.functions.text
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("zerver", "0739_alter_realm_can_set_delete_message_policy_group"),
]
operations = [
# Update the last_updated to the max for any set of (user_id, kind=1, lower(token))
migrations.RunSQL(
"""
WITH dups AS (
SELECT user_id, kind, LOWER(token) AS token, MAX(last_updated) AS max_last_updated
FROM zerver_pushdevicetoken
WHERE kind = 1
GROUP BY user_id, kind, LOWER(token)
HAVING COUNT(*) > 1
)
UPDATE zerver_pushdevicetoken
SET last_updated = dups.max_last_updated
FROM dups
WHERE zerver_pushdevicetoken.user_id = dups.user_id
AND zerver_pushdevicetoken.kind = dups.kind
AND LOWER(zerver_pushdevicetoken.token) = dups.token
"""
),
# And then delete all but the first of each of those sets
migrations.RunSQL(
"""
WITH dups AS (
SELECT user_id, kind, LOWER(token) AS token, MIN(id) AS min_id
FROM zerver_pushdevicetoken
WHERE kind = 1
GROUP BY user_id, kind, LOWER(token)
HAVING COUNT(*) > 1
)
DELETE FROM zerver_pushdevicetoken
USING dups
WHERE zerver_pushdevicetoken.user_id = dups.user_id
AND zerver_pushdevicetoken.kind = dups.kind
AND LOWER(zerver_pushdevicetoken.token) = dups.token
AND zerver_pushdevicetoken.id != dups.min_id
"""
),
migrations.AddConstraint(
model_name="pushdevicetoken",
constraint=models.UniqueConstraint(
models.F("user_id"),
models.F("kind"),
django.db.models.functions.text.Lower(models.F("token")),
condition=models.Q(("kind", 1)),
name="zerver_pushdevicetoken_apns_user_kind_token",
),
),
migrations.AddConstraint(
model_name="pushdevicetoken",
constraint=models.UniqueConstraint(
models.F("user_id"),
models.F("kind"),
models.F("token"),
condition=models.Q(("kind", 2)),
name="zerver_pushdevicetoken_fcm_user_kind_token",
),
),
migrations.AlterUniqueTogether(
name="pushdevicetoken",
unique_together=set(),
),
]