import random
import time
import os
import traceback
import random

from config import set_config
from utils import request_post, filter_video_status, send_msg_to_feishu
from log import Log
from db_helper import RedisHelper

config_, _ = set_config()
log_ = Log()


def get_videos_from_flow_pool(app_type, size=1000):
    """
    从流量池获取视频，循环获取，直到返回数据为None结束
    :param app_type: 产品标识 type-int
    :param size: 每次获取视频数量，type-int，默认1000
    :return: videos  [{'videoId': 1111, 'flowPool': ''}, ...]
    """
    # 获取批次标识，利用首次获取数据时间戳为标记
    batch_flag = int(time.time())
    request_data = {'appType': app_type, 'batchFlag': batch_flag, 'size': size}
    videos = []
    while True:
        result = request_post(request_url=config_.GET_VIDEOS_FROM_POOL_URL, request_data=request_data)
        if result is None:
            break
        if result['code'] != 0:
            log_.info('batch_flag: {}, 获取流量池视频失败'.format(batch_flag))
            break
        if not result['data']:
            break
        videos.extend(result['data'])
    return videos


def get_videos_remain_view_count(app_type, videos_info):
    """
    获取视频在流量池中的剩余可分发数
    :param app_type: 产品标识 type-int
    :param videos_info: 视频信息 (视频id, 流量池标记) type-list，[(video_id, flow_pool), ...]
    :return: data type-list，[(video_id, flow_pool, view_count), ...]
    """
    if not videos_info:
        return []

    videos = [{'videoId': info[0], 'flowPool': info[1]} for info in videos_info]
    request_data = {'appType': app_type, 'videos': videos}
    result = request_post(request_url=config_.GET_REMAIN_VIEW_COUNT_URL, request_data=request_data)

    if result is None:
        return []

    if result['code'] != 0:
        log_.info('获取视频在流量池中的剩余可分发数失败')
        return []

    data = [(item['videoId'], item['flowPool'], item['viewCount']) for item in result['data']]
    return data


def get_score(video_ids):
    # 以[0, 100]之间的随机浮点数作为score
    return [random.uniform(0, 100) for _ in range(len(video_ids))]


def predict(app_type):
    """
    对流量池视频排序，并将结果上传Redis
    :param app_type: 产品标识 type-int
    :return: None
    """
    try:
        # 从流量池获取数据
        videos = get_videos_from_flow_pool(app_type=app_type)
        if len(videos) <= 0:
            log_.info('流量池中无需分发的视频')
            return None
        # video_id 与 flow_pool 进行mapping
        video_ids = set()
        log_.info('流量池中视频数：{}'.format(len(videos)))
        mapping = {}
        for video in videos:
            video_id = video['videoId']
            video_ids.add(video_id)
            if video_id in mapping:
                mapping[video_id].append(video['flowPool'])
            else:
                mapping[video_id] = [video['flowPool']]

        # 对视频状态进行过滤
        filtered_videos = filter_video_status(list(video_ids))
        log_.info('filter videos status finished, filtered_videos nums={}'.format(len(filtered_videos)))
        if not filtered_videos:
            log_.info('流量池中视频状态不符合分发')
            return None
        # 预测
        video_score = get_score(filtered_videos)
        log_.info('predict finished!')
        # 上传数据到redis
        redis_data = {}
        for i in range(len(video_score)):
            video_id = filtered_videos[i]
            score = video_score[i]
            for flow_pool in mapping.get(video_id):
                value = '{}-{}'.format(video_id, flow_pool)
                redis_data[value] = score
        key_name = config_.FLOWPOOL_KEY_NAME_PREFIX + str(app_type)
        redis_helper = RedisHelper()
        # 如果key已存在，删除key
        if redis_helper.key_exists(key_name):
            redis_helper.del_keys(key_name)
        # 写入redis
        redis_helper.add_data_with_zset(key_name=key_name, data=redis_data, expire_time=24 * 3600)
        log_.info('data to redis finished!')
    except Exception as e:
        log_.error('流量池更新失败, appType: {} exception: {}, traceback: {}'.format(
            app_type, e, traceback.format_exc()))
        send_msg_to_feishu(
            webhook=config_.FEISHU_ROBOT['server_robot'].get('webhook'),
            key_word=config_.FEISHU_ROBOT['server_robot'].get('key_word'),
            msg_text='rov-offline{} - 流量池更新失败, appType: {}, exception: {}'.format(config_.ENV_TEXT, app_type, e)
        )


if __name__ == '__main__':
    # res = get_videos_from_pool(app_type=0)
    # res = get_videos_remain_view_count(app_type=0, videos_info=[('12345', '#2#1#111')])
    # print(res)

    log_.info('flow pool predict start...')
    for app_name, app_type in config_.APP_TYPE.items():
        log_.info('{} predict start...'.format(app_name))
        predict(app_type=app_type)
        log_.info('{} predict end...'.format(app_name))
    log_.info('flow pool predict end...')
    # 将日志上传到oss
    # log_cmd = "ossutil cp -r -f {} oss://{}/{}".format(log_.logname, config_.BUCKET_NAME,
    #                                                    config_.OSS_FOLDER_LOGS + 'flow_pool/')
    # os.system(log_cmd)