# Copyright 2021 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import time

class Timer:
    def __init__(self, starting_msg = None):
        self.start = time.time()
        self.stage_start = self.start

        if starting_msg is not None:
            print(starting_msg, time.ctime(time.time()))


    def update_progress(self, progress):
        self.elapsed = time.time() - self.start
        self.est_total = self.elapsed / progress
        self.est_remaining = self.est_total - self.elapsed
        self.est_finish = int(self.start + self.est_total)


    def str_est_finish(self):
        return str(time.ctime(self.est_finish))

    def get_stage_elapsed(self):
        return time.time() - self.stage_start

    def reset_stage(self):
        self.stage_start = time.time()