# coding:utf-8
import datetime
import traceback
import os

from utils import execute_sql_from_odps
from db_helper import RedisHelper
from config import set_config
from log import Log

config_ = set_config()
log_ = Log()


def update_bottom_videos():
    """更新兜底视频"""
    try:
        # 获取昨日播放量top1000的视频
        now_date = datetime.datetime.today()
        delta_date = now_date - datetime.timedelta(days=1)

        sql = "SELECT  video_playcount.videoid " \
              ",video_playcount.play_count " \
              "FROM    ( " \
              "SELECT  videoid " \
              ",COUNT(*) play_count " \
              "FROM    loghubods.video_action_log_applet " \
              "WHERE   dt = {} " \
              "AND     business = 'videoPlay' " \
              "GROUP BY videoid " \
              ") video_playcount INNER " \
              "JOIN    ( " \
              "SELECT  DISTINCT videoid " \
              "FROM    videoods.dim_video " \
              "WHERE   video_edit = '通过' " \
              "AND     video_data_stat = '有效' " \
              "AND     video_recommend IN ( '待推荐', '普通推荐') " \
              "AND     charge = '免费' " \
              "AND     is_pwd = '未加密' " \
              ") video_status " \
              "ON      video_playcount.videoid = video_status.videoid " \
              "ORDER BY video_playcount.play_count DESC " \
              "LIMIT   1000 " \
              ";".format(delta_date.strftime('%Y%m%d'))

        records = execute_sql_from_odps(project='loghubods', sql=sql)

        # 视频按照昨日播放量写入redis
        videos = {}
        with records.open_reader() as reader:
            for record in reader:
                video_id = record['videoid']
                videos[video_id] = record['play_count']

        redis_helper = RedisHelper()
        redis_helper.add_data_with_zset(key_name=config_.BOTTOM_KEY_NAME, data=videos)
        # 与原有兜底视频排序，保留top1000
        redis_helper.remove_by_rank_from_zset(key_name=config_.BOTTOM_KEY_NAME, start=config_.BOTTOM_NUM, stop=-1)
        # 移除bottom key的过期时间，将其转换为永久状态
        redis_helper.persist_key(key_name=config_.BOTTOM_KEY_NAME)

        log_.info('{} update bottom videos success!, video nums = {}'.format(now_date, len(videos)))
    except Exception as e:
        log_.error(traceback.format_exc())


if __name__ == '__main__':
    update_bottom_videos()