# -*- coding: utf-8 -*-
# Generated by Django 1.10.5 on 2017-03-04 07:33
from __future__ import unicode_literals

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

from django.conf import settings
from django.db import migrations, models
import django.db.models.deletion

from django.utils import timezone

def backfill_user_activations_and_deactivations(apps, schema_editor):
    # type: (StateApps, DatabaseSchemaEditor) -> None
    migration_time = timezone.now()
    RealmAuditLog = apps.get_model('zerver', 'RealmAuditLog')
    UserProfile = apps.get_model('zerver', 'UserProfile')

    for user in UserProfile.objects.all():
        RealmAuditLog.objects.create(realm=user.realm, modified_user=user,
                                     event_type='user_created', event_time=user.date_joined,
                                     backfilled=False)

    for user in UserProfile.objects.filter(is_active=False):
        RealmAuditLog.objects.create(realm=user.realm, modified_user=user,
                                     event_type='user_deactivated', event_time=migration_time,
                                     backfilled=True)

def reverse_code(apps, schema_editor):
    # type: (StateApps, DatabaseSchemaEditor) -> None
    RealmAuditLog = apps.get_model('zerver', 'RealmAuditLog')
    RealmAuditLog.objects.filter(event_type='user_created').delete()
    RealmAuditLog.objects.filter(event_type='user_deactivated').delete()


class Migration(migrations.Migration):

    dependencies = [
        ('zerver', '0056_userprofile_emoji_alt_code'),
    ]

    operations = [
        migrations.CreateModel(
            name='RealmAuditLog',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('event_type', models.CharField(max_length=40)),
                ('backfilled', models.BooleanField(default=False)),
                ('event_time', models.DateTimeField()),
                ('acting_user', models.ForeignKey(null=True,
                                                  on_delete=django.db.models.deletion.CASCADE,
                                                  related_name='+',
                                                  to=settings.AUTH_USER_MODEL)),
                ('modified_stream', models.ForeignKey(null=True,
                                                      on_delete=django.db.models.deletion.CASCADE,
                                                      to='zerver.Stream')),
                ('modified_user', models.ForeignKey(null=True,
                                                    on_delete=django.db.models.deletion.CASCADE,
                                                    related_name='+',
                                                    to=settings.AUTH_USER_MODEL)),
                ('realm', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='zerver.Realm')),
            ],
        ),

        migrations.RunPython(backfill_user_activations_and_deactivations,
                             reverse_code=reverse_code),

    ]