zulip/zerver/migrations/0221_subscription_notifications_data_migration.py

# Generated by Django 1.11.18 on 2019-02-13 20:13

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

RECIPIENT_STREAM = 2
SETTINGS_MAP = {
    'desktop_notifications': 'enable_stream_desktop_notifications',
    'audible_notifications': 'enable_stream_sounds',
    'push_notifications': 'enable_stream_push_notifications',
    'email_notifications': 'enable_stream_email_notifications',
}

def update_notification_settings(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
    Subscription = apps.get_model('zerver', 'Subscription')
    UserProfile = apps.get_model('zerver', 'UserProfile')

    for setting_value in [True, False]:
        for sub_setting_name, user_setting_name in SETTINGS_MAP.items():
            sub_filter_kwargs = {sub_setting_name: setting_value}
            user_filter_kwargs = {user_setting_name: setting_value}
            update_kwargs = {sub_setting_name: None}
            Subscription.objects.filter(user_profile__in=UserProfile.objects.filter(**user_filter_kwargs),
                                        recipient__type=RECIPIENT_STREAM,
                                        **sub_filter_kwargs).update(**update_kwargs)

def reverse_notification_settings(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
    Subscription = apps.get_model('zerver', 'Subscription')
    UserProfile = apps.get_model('zerver', 'UserProfile')

    for setting_value in [True, False]:
        for sub_setting_name, user_setting_name in SETTINGS_MAP.items():
            sub_filter_kwargs = {sub_setting_name: None}
            user_filter_kwargs = {user_setting_name: setting_value}
            update_kwargs = {sub_setting_name: setting_value}
            Subscription.objects.filter(user_profile__in=UserProfile.objects.filter(**user_filter_kwargs),
                                        recipient__type=RECIPIENT_STREAM,
                                        **sub_filter_kwargs).update(**update_kwargs)

    for sub_setting_name, user_setting_name in SETTINGS_MAP.items():
        sub_filter_kwargs = {sub_setting_name: None}
        update_kwargs = {sub_setting_name: True}
        Subscription.objects.filter(recipient__type__in=[1, 3], **sub_filter_kwargs).update(**update_kwargs)

class Migration(migrations.Migration):

    dependencies = [
        ('zerver', '0220_subscription_notification_settings'),
    ]

    operations = [
        migrations.RunPython(update_notification_settings,
                             reverse_notification_settings,
                             elidable=True),
    ]