import pymysql
from pymysql.cursors import DictCursor
from multiprocessing import cpu_count
from update.models import Cinema
import queue
import threading
from django.utils import timezone
import datetime


class GetVersion(object):
    def __init__(self, cinema_ip_list=None):
        self.cinema_ip_list = cinema_ip_list
        self.queue = queue.Queue()  # 注册队列
        self.th_num = 0  # 获取CPU核心数量，-1后座位处理逻辑的线程数量

    def get_all_cinema(self):
        print('get_all_cinema')
        if self.cinema_ip_list is None:
            all_cinema_obj = Cinema.objects.all()
        else:
            all_cinema_obj = Cinema.objects.filter(ip__in=self.cinema_ip_list)
        for cinema_obj in all_cinema_obj:
            print(cinema_obj)
            data = {
                'ip': cinema_obj.ip,
                'db_user': cinema_obj.db_user,
                'db_pwd': cinema_obj.db_pwd
            }
            self.queue.put(data)
        cpu_num = cpu_count() - 1 if cpu_count() > 1 else 1
        cinema_num = len(all_cinema_obj)
        self.th_num = cpu_num if cpu_num < cinema_num else cinema_num

    def main_process(self):
        print('main_process')
        self.get_all_cinema()
        while self.queue.qsize() > 0:
            threads = []
            for i in range(self.th_num):
                t = threading.Thread(target=self.get_cinema_ver, args=(self.queue,))
                threads.append(t)
            for i in range(self.th_num):
                threads[i].start()
            for i in range(self.th_num):
                threads[i].join()

    @staticmethod
    def get_cinema_ver(q):
        if q.empty():
            return
        else:
            cinema_config = q.get()
        sql_str = "SELECT * FROM cinema_version;"
        ip = cinema_config.get('ip')
        db_config = {
            'host': ip,
            'user': cinema_config.get('db_user'),
            'password': cinema_config.get('db_pwd'),
            'database': 'cine',
            'connect_timeout': 5,
        }
        db_conn = pymysql.Connect(**db_config)
        db_cursor = db_conn.cursor(cursor=DictCursor)
        db_cursor.execute(sql_str)
        res = db_cursor.fetchone()
        update_data = {
            'sys_ver': res['server_version'],
            'client_ver': res['client_version'],
            # 'update_time': datetime.datetime.strftime(datetime.datetime.now(), '%Y-%m-%d %H:%M:%S')
            'update_time': timezone.now()
        }
        print(ip, update_data, db_config)
        cinema_obj = Cinema.objects.filter(ip=ip).update(**update_data)


if __name__ == '__main__':
    v = GetVersion()
    v.get_all_cinema()