###################################################################
#           Copyright (c) 2016 by TAOS Technologies, Inc.
#                     All rights reserved.
#
#  This file is proprietary and confidential to TAOS Technologies.
#  No part of this file may be reproduced, stored, transmitted,
#  disclosed or used in any form or by any means other than as
#  expressly provided by the written permission from Jianhui Tao
#
###################################################################

# -*- coding: utf-8 -*-

import time
from datetime import datetime

class GetTime:

    def get_ms_timestamp(self,ts_str):
        _ts_str = ts_str
        if " " in ts_str:
            p = ts_str.split(" ")[1]
            if len(p) > 15 :
                _ts_str = ts_str[:-3]
        if ':' in _ts_str and '.' in _ts_str:
            timestamp = datetime.strptime(_ts_str, "%Y-%m-%d %H:%M:%S.%f")
            date_time = int(int(time.mktime(timestamp.timetuple()))*1000 + timestamp.microsecond/1000)
        elif ':' in _ts_str and '.' not in _ts_str:
            timestamp = datetime.strptime(_ts_str, "%Y-%m-%d %H:%M:%S")
            date_time = int(int(time.mktime(timestamp.timetuple()))*1000 + timestamp.microsecond/1000)
        else:
            timestamp = datetime.strptime(_ts_str, "%Y-%m-%d")
            date_time = int(int(time.mktime(timestamp.timetuple()))*1000 + timestamp.microsecond/1000)
        return date_time
    def get_us_timestamp(self,ts_str):
        _ts = self.get_ms_timestamp(ts_str) * 1000
        if " " in ts_str:
            p = ts_str.split(" ")[1]
            if len(p) > 12:
                us_ts = p[12:15]
                _ts += int(us_ts)
        return _ts
    def get_ns_timestamp(self,ts_str):
        _ts = self.get_us_timestamp(ts_str) *1000
        if " " in ts_str:
            p = ts_str.split(" ")[1]
            if len(p) > 15:
                us_ts = p[15:]
                _ts += int(us_ts)
        return _ts
    def time_transform(self,ts_str,precision):
        date_time = []
        if precision == 'ms':
            for i in ts_str:
                date_time.append(self.get_ms_timestamp(i))
        elif precision == 'us':
            for i in ts_str:
                date_time.append(self.get_us_timestamp(i))
        elif precision == 'ns':
            for i in ts_str:
                date_time.append(self.get_ns_timestamp(i))
        return date_time