# Generated by Django 2.1 on 2018-09-22 14:30
from django.core.exceptions import ImproperlyConfigured
from django.db import migrations, connection, models
from statistics.fields import UnixDateTimeField


# def psql_migr(apps, _):
#     pass


class Migration(migrations.Migration):

    dependencies = [
        ('abonapp', '0005_current_tariff'),
        ('statistics', '0002_auto_20180808_1236'),
    ]

    operations = [
        migrations.AlterModelOptions(
            name='statcache',
            options={'ordering': ('-last_time',)},
        ),
    ]


db_e = connection.settings_dict.get('ENGINE')
if db_e is None:
    raise ImproperlyConfigured('Database ENGINE is not set')
# if 'postgresql' in db_e:
#     # Postgres
    Migration.operations.insert(0, migrations.RunPython(psql_migr))
if 'mysql' in db_e:
    Migration.operations.insert(0, migrations.RunSQL(
        (
            "DROP TABLE `flowcache`;",
            "CREATE TABLE `flowcache` ( "
            "  `last_time` INT(10) UNSIGNED NOT NULL, "
            "  `abon_id`   INT(11) DEFAULT NULL UNIQUE, "
            "  `octets`    INT(10) UNSIGNED NOT NULL, "
            "  `packets`   INT(10) UNSIGNED NOT NULL, "
            "  KEY `flowcache_abon_id_91e1085d` (`abon_id`) "
            ") ENGINE = MEMORY  DEFAULT CHARSET = utf8;"
        ),
        state_operations=[
            migrations.DeleteModel(name='statcache'),
            migrations.CreateModel(
                name='statcache',
                fields=[
                    ('last_time', UnixDateTimeField()),
                    ('abon', models.OneToOneField('abonapp.Abon', on_delete=models.CASCADE, primary_key=True)),
                    ('octets', models.PositiveIntegerField(default=0)),
                    ('packets', models.PositiveIntegerField(default=0))
                ],
                options={
                    'db_table': 'flowcache',
                },
            )
        ]
    ))
else:
    Migration.operations.extend(
        (
            migrations.DeleteModel(name='statcache'),
            migrations.CreateModel(
                name='statcache',
                fields=[
                    ('last_time', UnixDateTimeField()),
                    ('abon', models.OneToOneField('abonapp.Abon', on_delete=models.CASCADE, primary_key=True)),
                    ('octets', models.PositiveIntegerField(default=0)),
                    ('packets', models.PositiveIntegerField(default=0))
                ],
                options={
                    'db_table': 'flowcache',
                    'ordering': ('-last_time',),
                    #'db_tablespace': 'ram'
                },
            )
        )
    )