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

from utils import execute_sql_from_odps, request_post
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   2000 " \
              ";".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
        video_id_list = []
        videos = {}
        with records.open_reader() as reader:
            for record in reader:
                video_id = int(record['videoid'])
                video_id_list.append(video_id)
                videos[video_id] = record['play_count']

        redis_helper = RedisHelper()
        redis_helper.del_keys(key_name=config_.BOTTOM_KEY_NAME)
        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)))

        # 获取今日兜底视频的json，并存入redis
        video_json_list = []
        for i in range(0, len(video_id_list)//10):
            video_json = get_video_info_json(video_ids=video_id_list[i*10:(i+1)*10])
            if video_json is not None:
                video_json_list.extend(video_json)
            if len(video_json_list) >= 1000:
                break
        # 写入redis，先删除key，再重新写入
        redis_helper.del_keys(config_.BOTTOM_JSON_KEY_NAME)
        redis_helper.add_data_with_set(key_name=config_.BOTTOM_JSON_KEY_NAME, values=video_json_list[:1000])
        # 移除过期时间，将其转换为永久状态
        redis_helper.persist_key(key_name=config_.BOTTOM_JSON_KEY_NAME)

        log_.info('{} update bottom videos info json success!, video nums = {}'.format(now_date,
                                                                                       len(video_json_list[:1000])))

    except Exception as e:
        log_.error(traceback.format_exc())


def get_video_info_json(video_ids):
    """
    获取视频对应json
    :param video_ids: type-list [int, int, ...]
    :return: json_data_list
    """
    request_data = {
        "appType": 4,
        "platform": "android",
        "versionCode": 295,
        "pageSize": 10,
        "machineCode": "weixin_openid_otjoB5WWWmkRjpMzkV5ltZ3osg3A",
        "uid": 6281917,
        "videoIds": video_ids
    }
    res = request_post(request_url=config_.BOTTOM_JSON_URL, request_data=request_data)
    if res is None:
        return None
    if res['code'] != 0:
        log_.info('获取视频json失败！')
        return None
    json_data_list = [json.dumps(item) for item in res['data']]
    return json_data_list


if __name__ == '__main__':
    update_bottom_videos()