import redis
import time as time
import logging
import json
from .DataStream import span_days, day_stamp, span_days, time_border, calc_interval

import logging
logger = logging.getLogger('PainterBase')

class PainterBase(object):
    def __init__(self):
        self._redis_client = None
        pass

    def set_redis(self, rhost, rport):
        pool = redis.ConnectionPool(host=rhost, port=rport)
        self._redis_client = redis.Redis(connection_pool=pool)
        pass

    def redis_client(self):
        return self._redis_client

    def calc_time(self, reader, start_time: int, end_time: int):
        if end_time is None:
            end_time = int(time.time())
        end_time = reader.near_stamp(end_time, False)
        if end_time is None:
            raise Exception('data is empty')

        if start_time is None or start_time > end_time:
            start_time = end_time - 7200

        start_time = reader.near_stamp(start_time, True)
        if start_time is None:
            raise Exception('data is empty')

        stime = lambda t: time.strftime('%d-%H:%M:%S', time.localtime(t))
        logger.debug("near_stamp start_time %d , %s end_time=%s", start_time, stime(start_time), stime(end_time))

        interval = calc_interval(start_time, end_time)
        start_time = time_border(interval, start_time, True)
        end_time = time_border(interval, end_time, False)
        logger.debug("time_border start_time %d , %s end_time=%s", start_time, stime(start_time), stime(end_time))

        days = span_days(start_time, end_time)

        stime = lambda t: time.strftime('%d-%H:%M:%S', time.localtime(t))
        sdays = [stime(day) for day in days]
        logger.debug(sdays)

        return days, start_time, end_time, interval