# -*- coding: utf-8 -*-
# Generated by Django 1.11.20 on 2019-05-06 13:15
from __future__ import unicode_literals

from django.db import migrations
from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
from django.db.migrations.state import StateApps


def upgrade_create_stream_policy(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
    Realm = apps.get_model('zerver', 'Realm')
    Realm.CREATE_STREAM_POLICY_MEMBERS = 1
    Realm.CREATE_STREAM_POLICY_ADMINS = 2
    Realm.CREATE_STREAM_POLICY_WAITING_PERIOD = 3
    Realm.objects.filter(waiting_period_threshold__exact=0) \
        .filter(create_stream_by_admins_only=False) \
        .update(create_stream_policy=Realm.CREATE_STREAM_POLICY_MEMBERS)
    Realm.objects.filter(create_stream_by_admins_only=True) \
        .update(create_stream_policy=Realm.CREATE_STREAM_POLICY_ADMINS)
    Realm.objects.filter(waiting_period_threshold__gt=0) \
        .filter(create_stream_by_admins_only=False) \
        .update(create_stream_policy=Realm.CREATE_STREAM_POLICY_WAITING_PERIOD)

class Migration(migrations.Migration):

    dependencies = [
        ('zerver', '0216_add_create_stream_policy'),
    ]

    operations = [
        migrations.RunPython(upgrade_create_stream_policy,
                             reverse_code=migrations.RunPython.noop),
    ]