# Generated by Django 3.2.18 on 2024-08-22 03:12

from django.db import migrations, models


def remove_duplicates(apps, schema_editor):
    Room = apps.get_model("chat_box", "Room")
    seen = set()

    for room in Room.objects.all():
        pair = (room.user_one_id, room.user_two_id)
        reverse_pair = (room.user_two_id, room.user_one_id)

        if pair in seen or reverse_pair in seen:
            room.delete()
        else:
            seen.add(pair)


class Migration(migrations.Migration):

    dependencies = [
        ("chat_box", "0015_room_last_msg_time"),
    ]

    operations = [
        migrations.RunPython(remove_duplicates),
        migrations.AlterUniqueTogether(
            name="room",
            unique_together={("user_one", "user_two")},
        ),
    ]