# Copyright Peter Gagarinov.
#
# 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.

from pytorch_lightning.callbacks.early_stopping import EarlyStopping


class EarlyStoppingWithGracePeriod(EarlyStopping):
    def __init__(self, *args, grace_period=0, **kwargs):
        super().__init__(*args, **kwargs)
        self.__grace_period_count = grace_period

    def _run_early_stopping_check(self, *args, **kwargs):
        if self.__grace_period_count == 0:
            super()._run_early_stopping_check(*args, **kwargs)
        else:
            self.__grace_period_count -= 1
