import traceback
from pytz import timezone
import sys
import threading
from datetime import datetime, timedelta
from random import randint
import time

# third-party
from apscheduler.jobstores.base import JobLookupError
from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore

from apscheduler.executors.pool import ThreadPoolExecutor, ProcessPoolExecutor
from apscheduler.triggers.cron import CronTrigger

jobstores = {"default": SQLAlchemyJobStore(url="sqlite:///data/db/gommi.db")}

excutors = {"default": ThreadPoolExecutor(20)}

job_defaults = {"coalesce": False, "max_instances": 1}

# gommi 공용
from framework.logger import get_logger

# 패키지
# ==========================================================================
package_name = __name__.split(".")[0]
logger = get_logger(package_name)


class Scheduler(object):
    job_list = []
    first_run_check_thread = None

    def __init__(self, args):
        # (jobstores=jobstores, executors=executors, job_defaults=job_defaults, timezone=utc)
        # self.sched = GeventScheduler( executors=executors)
        try:
            if args is None or (args is not None and args.use_gevent):
                from apscheduler.schedulers.gevent import GeventScheduler

                self.sched = GeventScheduler(timezone="Asia/Seoul")
            else:
                raise Exception("")
        except Exception:
            from apscheduler.schedulers.background import BackgroundScheduler

            self.sched = BackgroundScheduler(timezone="Asia/Seoul")
        # jobstores=jobstores,  에러 pickle 직렬화 할수없다
        # self.sched.configure(executors=executors, job_defaults=job_defaults, timezone='Asia/Seoul')
        # self.sched.configure(executors=executors, timezone='Asia/Seoul')
        self.sched.start()
        logger.debug("SCHEDULER...")

    def first_run_check_thread_function(self):
        logger.warning("XX first_run_check_thread_function")

        try:
            # time.sleep(60)
            # for i in range(5):
            flag_exit = True
            for job_instance in self.job_list:
                if not job_instance.run:
                    continue
                if (
                    job_instance.count == 0
                    and not job_instance.is_running
                    and job_instance.is_interval
                ):
                    # if job_instance.count == 0 and not job_instance.is_running:
                    job = self.sched.get_job(job_instance.job_id)
                    if job is not None:
                        logger.warning("job_instance : %s", job_instance.plugin)
                        logger.warning("XX job re-sched:%s", job)
                        flag_exit = False
                        tmp = randint(1, 20)
                        job.modify(
                            next_run_time=datetime.now(timezone("Asia/Seoul"))
                            + timedelta(seconds=tmp)
                        )
                        # break
                    else:
                        pass
            if flag_exit:
                self.remove_job("scheduler_check")
            # time.sleep(30)
            logger.warning("first_run_check_thread_function end!!")
        except Exception as exception:
            logger.error("Exception:%s", exception)
            logger.error(traceback.format_exc())

    def get_job_list_info(self):

        ret = []
        idx = 0
        job_list = self.sched.get_jobs()
        # logger.debug('len jobs %s %s', len(jobs), len(Scheduler.job_list))
        for j in job_list:
            idx += 1
            entity = {}
            entity["no"] = idx
            entity["id"] = j.id
            entity["next_run_time"] = j.next_run_time.strftime("%m-%d %H:%M:%S")
            remain = j.next_run_time - datetime.now(timezone("Asia/Seoul"))
            tmp = ""
            if remain.days > 0:
                tmp += "%s일 " % (remain.days)
            remain = remain.seconds
            if remain // 3600 > 0:
                tmp += "%s시간 " % (remain // 3600)
            remain = remain % 3600
            if remain // 60 > 0:
                tmp += "%s분 " % (remain // 60)
            tmp += "%s초" % (remain % 60)
            # entity['remain_time'] = (j.next_run_time - datetime.now(timezone('Asia/Seoul'))).seconds
            entity["remain_time"] = tmp
            job = self.get_job_instance(j.id)
            if job is not None:
                entity["count"] = job.count
                entity["plugin"] = job.plugin
                if job.is_cron:
                    entity["interval"] = job.interval
                elif job.interval == 9999:
                    entity["interval"] = "항상 실행"
                    entity["remain_time"] = ""
                else:
                    entity["interval"] = "%s분 %s초" % (
                        job.interval,
                        job.interval_seconds,
                    )
                entity["is_running"] = job.is_running
                entity["description"] = job.description
                entity["running_timedelta"] = (
                    job.running_timedelta.seconds
                    if job.running_timedelta is not None
                    else "-"
                )
                entity["make_time"] = job.make_time.strftime("%m-%d %H:%M:%S")
                entity["run"] = job.run
            else:
                entity["count"] = ""
                entity["plugin"] = ""
                entity["interval"] = ""
                entity["is_running"] = ""
                entity["description"] = ""
                entity["running_timedelta"] = ""
                entity["make_time"] = ""
                entity["run"] = True

            ret.append(entity)
        return ret

    def add_job_instance(self, job_instance, run=True):
        from framework import app

        if app.config["config"]["run_by_real"] and app.config["config"]["auth_status"]:
            if not self.is_include(job_instance.job_id):
                job_instance.run = run
                Scheduler.job_list.append(job_instance)
                if job_instance.is_interval:
                    self.sched.add_job(
                        job_instance.job_function,
                        "interval",
                        minutes=job_instance.interval,
                        seconds=job_instance.interval_seconds,
                        id=job_instance.job_id,
                        args=(None),
                    )
                elif job_instance.is_cron:
                    self.sched.add_job(
                        job_instance.job_function,
                        CronTrigger.from_crontab(job_instance.interval),
                        id=job_instance.job_id,
                        args=(None),
                    )
                # self.sched.add_job(job_instance.job_function, 'interval', minutes=job_instance.interval,
                # id=job_instance.job_id, args=(None))
                job = self.sched.get_job(job_instance.job_id)
                if run and job_instance.is_interval:
                    tmp = randint(5, 20)
                    job.modify(
                        next_run_time=datetime.now(timezone("Asia/Seoul"))
                        + timedelta(seconds=tmp)
                    )

    def is_include(self, job_id):
        job = self.sched.get_job(job_id)
        return job is not None