# Copyright (c) 2021, NVIDIA CORPORATION.  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.

import os
from typing import List, Union

import inflect

_inflect = inflect.engine()


def num_to_word(x: Union[str, int]):
    """
    converts integer to spoken representation

    Args
        x: integer

    Returns: spoken representation 
    """
    if isinstance(x, int):
        x = str(x)
        x = _inflect.number_to_words(str(x)).replace("-", " ").replace(",", "")
    return x


def get_abs_path(rel_path):
    """
    Get absolute path

    Args:
        rel_path: relative path to this file
        
    Returns absolute path
    """
    return os.path.dirname(os.path.abspath(__file__)) + "/" + rel_path


def get_various_formats(text: str) -> List[str]:
    """
    Return various formats for text, e.g., all caps, the first letter upper cased, space separated, etc.
    """
    result = []
    if len(text) == 0:
        return []

    for t in [text, " ".join(list(text))]:
        result.append(t)
        result.append(t.upper())
        result.append(t.capitalize())
    return result


def load_labels(abs_path):
    """
    loads relative path file as dictionary

    Args:
        abs_path: absolute path

    Returns dictionary of mappings
    """
    with open(abs_path, encoding="utf-8") as label_tsv:
        labels = list(csv.reader(label_tsv, delimiter="\t"))
    return labels