#   Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
#
# 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.
"""
util tools
"""
from __future__ import print_function
import os
import sys
import numpy as np
import paddle.fluid as fluid
import yaml
import io


def str2bool(v):
    """
    argparse does not support True or False in python
    """
    return v.lower() in ("true", "t", "1")


class ArgumentGroup(object):
    """
    Put arguments to one group
    """

    def __init__(self, parser, title, des):
        """none"""
        self._group = parser.add_argument_group(title=title, description=des)

    def add_arg(self, name, type, default, help, **kwargs):
        """ Add argument """
        type = str2bool if type == bool else type
        self._group.add_argument(
            "--" + name,
            default=default,
            type=type,
            help=help + ' Default: %(default)s.',
            **kwargs)


def load_yaml(parser, file_name, **kwargs):
    with io.open(file_name, 'r', encoding='utf8') as f:
        args = yaml.load(f)
        for title in args:
            group = parser.add_argument_group(title=title, description='')
            for name in args[title]:
                _type = type(args[title][name]['val'])
                _type = str2bool if _type == bool else _type
                group.add_argument(
                    "--" + name,
                    default=args[title][name]['val'],
                    type=_type,
                    help=args[title][name]['meaning'] +
                    ' Default: %(default)s.',
                    **kwargs)


def print_arguments(args):
    """none"""
    print('-----------  Configuration Arguments -----------')
    for arg, value in sorted(vars(args).items()):
        print('%s: %s' % (arg, value))
    print('------------------------------------------------')