# coding: utf-8
import os
import subprocess

from django.conf import settings
from celery import shared_task

from celery.exceptions import SoftTimeLimitExceeded
from django.utils import timezone
from django.utils.translation import ugettext_lazy as _

from common.utils import get_logger, get_object_or_none, get_log_keep_day
from orgs.utils import tmp_to_org
from .celery.decorator import (
    register_as_period_task, after_app_shutdown_clean_periodic,
    after_app_ready_start
)
from .celery.utils import (
    create_or_update_celery_periodic_tasks, get_celery_periodic_task,
    disable_celery_periodic_task, delete_celery_periodic_task
)
from .models import CeleryTaskExecution, Job, JobExecution
from .notifications import ServerPerformanceCheckUtil

logger = get_logger(__file__)


@shared_task(soft_time_limit=60, queue="ansible", verbose_name=_("Run ansible task"))
def run_ops_job(job_id):
    job = get_object_or_none(Job, id=job_id)
    execution = job.create_execution()
    run_ops_job_execution(execution)


@shared_task(soft_time_limit=60, queue="ansible", verbose_name=_("Run ansible task execution"))
def run_ops_job_execution(execution_id, **kwargs):
    execution = get_object_or_none(JobExecution, id=execution_id)
    try:
        with tmp_to_org(execution.org):
            execution.start()
    except SoftTimeLimitExceeded:
        execution.set_error('Run timeout')
        logger.error("Run adhoc timeout")
    except Exception as e:
        execution.set_error(e)
        logger.error("Start adhoc execution error: {}".format(e))


@shared_task(verbose_name=_('Periodic clear celery tasks'))
@after_app_shutdown_clean_periodic
@register_as_period_task(interval=3600 * 24, description=_("Clean celery log period"))
def clean_celery_tasks_period():
    logger.debug("Start clean celery task history")
    expire_days = get_log_keep_day('TASK_LOG_KEEP_DAYS')
    days_ago = timezone.now() - timezone.timedelta(days=expire_days)
    tasks = CeleryTaskExecution.objects.filter(date_start__lt=days_ago)
    tasks.delete()
    tasks = CeleryTaskExecution.objects.filter(date_start__isnull=True)
    tasks.delete()
    command = "find %s -mtime +%s -name '*.log' -type f -exec rm -f {} \\;" % (
        settings.CELERY_LOG_DIR, expire_days
    )
    subprocess.call(command, shell=True)
    command = "echo > {}".format(os.path.join(settings.LOG_DIR, 'celery.log'))
    subprocess.call(command, shell=True)


@shared_task(verbose_name=_('Clear celery periodic tasks'))
@after_app_ready_start
def clean_celery_periodic_tasks():
    """清除celery定时任务"""
    need_cleaned_tasks = [
        'handle_be_interrupted_change_auth_task_periodic',
    ]
    logger.info('Start clean celery periodic tasks: {}'.format(need_cleaned_tasks))
    for task_name in need_cleaned_tasks:
        logger.info('Start clean task: {}'.format(task_name))
        task = get_celery_periodic_task(task_name)
        if task is None:
            logger.info('Task does not exist: {}'.format(task_name))
            continue
        disable_celery_periodic_task(task_name)
        delete_celery_periodic_task(task_name)
        task = get_celery_periodic_task(task_name)
        if task is None:
            logger.info('Clean task success: {}'.format(task_name))
        else:
            logger.info('Clean task failure: {}'.format(task))


@shared_task(verbose_name=_('Create or update periodic tasks'))
@after_app_ready_start
def create_or_update_registered_periodic_tasks():
    from .celery.decorator import get_register_period_tasks
    for task in get_register_period_tasks():
        create_or_update_celery_periodic_tasks(task)


@shared_task(verbose_name=_("Periodic check service performance"))
@register_as_period_task(interval=3600)
def check_server_performance_period():
    ServerPerformanceCheckUtil().check_and_publish()