#
# Copyright (c) 2017 Intel Corporation
#
# 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 rl_coach.data_stores.nfs_data_store import NFSDataStore, NFSDataStoreParameters
from rl_coach.data_stores.s3_data_store import S3DataStore, S3DataStoreParameters
from rl_coach.data_stores.redis_data_store import (
    RedisDataStore,
    RedisDataStoreParameters,
)
from rl_coach.data_stores.data_store import DataStoreParameters


def get_data_store(params):
    data_store = None
    if type(params) == NFSDataStoreParameters:
        data_store = NFSDataStore(params)
    elif type(params) == S3DataStoreParameters:
        data_store = S3DataStore(params)
    elif type(params) == RedisDataStoreParameters:
        data_store = RedisDataStore(params)
    else:
        raise ValueError("invalid params type {}".format(type(params)))

    return data_store


def construct_data_store_params(json: dict):
    ds_params_instance = None
    ds_params = DataStoreParameters(
        json["store_type"], json["orchestrator_type"], json["orchestrator_params"]
    )
    if json["store_type"] == "nfs":
        ds_params_instance = NFSDataStoreParameters(
            ds_params, checkpoint_dir=json["checkpoint_dir"]
        )
    elif json["store_type"] == "s3":
        ds_params_instance = S3DataStoreParameters(
            ds_params=ds_params,
            end_point=json["end_point"],
            bucket_name=json["bucket_name"],
            checkpoint_dir=json["checkpoint_dir"],
            expt_dir=json["expt_dir"],
        )
    elif json["store_type"] == "redis":
        ds_params_instance = RedisDataStoreParameters(
            ds_params,
            redis_address=json["redis_address"],
            redis_port=json["redis_port"],
            redis_channel=json["redis_channel"],
        )
    else:
        raise ValueError("store_type {} was found, expected 'nfs', 'redis' or 's3'.")

    return ds_params_instance