# Generated by Django 3.1.13 on 2021-12-01 11:01
import os
import sys
import django
import time

app_path = '***** Change me *******'
sys.path.insert(0, app_path)
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "jumpserver.settings")
django.setup()

from django.apps import apps
from django.db import connection

# ========================== 添加到需要测试的 migrations 上方 ==========================


from django.db import migrations

from rbac.builtin import BuiltinRole


def migrate_system_role_binding(apps, schema_editor):
    db_alias = schema_editor.connection.alias
    user_model = apps.get_model('users', 'User')
    role_binding_model = apps.get_model('rbac', 'SystemRoleBinding')

    count = 0
    bulk_size = 1000
    while True:
        users = user_model.objects.using(db_alias) \
                    .only('role', 'id') \
                    .all()[count:count+bulk_size]
        if not users:
            break

        role_bindings = []
        start = time.time()
        for user in users:
            role = BuiltinRole.get_system_role_by_old_name(user.role)
            role_binding = role_binding_model(scope='system', user_id=user.id, role_id=role.id)
            role_bindings.append(role_binding)

        role_binding_model.objects.bulk_create(role_bindings, ignore_conflicts=True)
        print("\tCreate role binding: {}-{} using: {:.2f}s".format(
            count, count + len(users), time.time()-start
        ))
        count += len(users)


class Migration(migrations.Migration):

    dependencies = [
        ('rbac', '0003_auto_20211130_1037'),
    ]

    operations = [
        migrations.RunPython(migrate_system_role_binding),
    ]


# ================== 添加到下方 ======================
def main():
    schema_editor = connection.schema_editor()
    migrate_system_role_binding(apps, schema_editor)


# main()