# Generated by Django 3.2.14 on 2022-08-17 05:46

import time
from django.db import migrations, models


def migrate_system_to_account(apps, schema_editor):
    apply_asset_ticket_model = apps.get_model('tickets', 'ApplyAssetTicket')
    apply_command_ticket_model = apps.get_model('tickets', 'ApplyCommandTicket')
    apply_login_asset_ticket_model = apps.get_model('tickets', 'ApplyLoginAssetTicket')

    model_system_user_account = (
        (apply_asset_ticket_model, 'apply_system_users', 'apply_accounts', True),
        (apply_command_ticket_model, 'apply_run_system_user', 'apply_run_account', False),
        (apply_login_asset_ticket_model, 'apply_login_system_user', 'apply_login_account', False),
    )

    for model, old_field, new_field, m2m in model_system_user_account:
        print("Start migrate '{}' system user to account".format(model))
        count = 0
        bulk_size = 1000

        while True:
            start = time.time()
            objects = model.objects.all().prefetch_related(old_field)[count:bulk_size]
            if not objects:
                break
            count += len(objects)

            updated = []
            for obj in objects:
                if m2m:
                    old_value = getattr(obj, old_field).all()
                    new_value = [s.username for s in old_value]
                else:
                    old_value = getattr(obj, old_field)
                    new_value = old_value.username if old_value else ''
                setattr(obj, new_field, new_value)
                updated.append(obj)
            model.objects.bulk_update(updated, [new_field])
            print("Migrate account: {}-{} using: {:.2f}s".format(
                count - len(objects), count, time.time()-start
            ))


class Migration(migrations.Migration):

    dependencies = [
        ('tickets', '0019_delete_applyapplicationticket'),
    ]

    operations = [
        migrations.AlterField(
            model_name='applyassetticket',
            name='apply_permission_name',
            field=models.CharField(max_length=128, verbose_name='Permission name'),
        ),
        migrations.AddField(
            model_name='applyassetticket',
            name='apply_accounts',
            field=models.JSONField(default=list, verbose_name='Apply accounts'),
        ),
        migrations.AddField(
            model_name='applycommandticket',
            name='apply_run_account',
            field=models.CharField(default='', max_length=128, verbose_name='Run account'),
        ),
        migrations.AddField(
            model_name='applyloginassetticket',
            name='apply_login_account',
            field=models.CharField(default='', max_length=128, verbose_name='Login account'),
        ),
        migrations.RunPython(migrate_system_to_account),
        migrations.RemoveField(
            model_name='applyassetticket',
            name='apply_system_users',
        ),
        migrations.RemoveField(
            model_name='applycommandticket',
            name='apply_run_system_user',
        ),
        migrations.RemoveField(
            model_name='applyloginassetticket',
            name='apply_login_system_user',
        ),
    ]