import json
import logging
import os

from redis import Redis
from django.conf import settings
from threading import Thread

from apps.msg.models import TbMessage
from yzk_wechat_event.settings.constant import Constant

logger = logging.getLogger('apps')


class JQRMSGPubSubUtils:
    rc = Redis(host=settings.REDIS_HOST, port=settings.REDIS_PORT, db=0)
    msg_list = []
    BATCH_SIZE = 100

    @classmethod
    def publish(cls, data):
        cls.rc.lpush(Constant.JQR_MSG_PUBSUB_CHANNEL, json.dumps(data))


def listen():
    api = os.environ.get('api')
    logger.info(f'监听消息队列-----{api}')
    from apps.jqr.serializers import TbMessageModelSerializer
    while True:
        data = JQRMSGPubSubUtils.rc.brpop(Constant.JQR_MSG_PUBSUB_CHANNEL, 5)
        if data is None:
            if len(JQRMSGPubSubUtils.msg_list) > 0:
                print(JQRMSGPubSubUtils.msg_list)
                TbMessage.objects.bulk_create(JQRMSGPubSubUtils.msg_list)
                JQRMSGPubSubUtils.msg_list = []
            continue
        data = json.loads(data[1])
        serializer = TbMessageModelSerializer(data=data)
        serializer.is_valid(raise_exception=True)
        JQRMSGPubSubUtils.msg_list.append(TbMessage(**serializer.validated_data))
        if len(JQRMSGPubSubUtils.msg_list) >= JQRMSGPubSubUtils.BATCH_SIZE:
            TbMessage.objects.bulk_create(JQRMSGPubSubUtils.msg_list)
            JQRMSGPubSubUtils.msg_list.clear()


if not settings.DEBUG:
    t = Thread(target=listen)
    t.start()