#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2022
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program.  If not, see [http://www.gnu.org/licenses/].
"""This module contains custom typing aliases for internal use within the library.

Warning:
    Contents of this module are intended to be used internally by the library and *not* by the
    user. Changes to this module are not considered breaking changes and may not be documented in
    the changelog.
"""
from pathlib import Path
from typing import IO, TYPE_CHECKING, Any, Collection, Dict, Optional, Tuple, TypeVar, Union

if TYPE_CHECKING:
    from telegram import (
        ForceReply,
        InlineKeyboardMarkup,
        InputFile,
        ReplyKeyboardMarkup,
        ReplyKeyboardRemove,
    )
    from telegram._utils.defaultvalue import DefaultValue

FileLike = Union[IO[bytes], "InputFile"]
"""Either a bytes-stream (e.g. open file handler) or a :class:`telegram.InputFile`."""

FilePathInput = Union[str, Path]
"""A filepath either as string or as :obj:`pathlib.Path` object."""

FileInput = Union[FilePathInput, FileLike, bytes, str]
"""Valid input for passing files to Telegram. Either a file id as string, a file like object,
a local file path as string, :class:`pathlib.Path` or the file contents as :obj:`bytes` or
:obj:`str`."""

JSONDict = Dict[str, Any]
"""Dictionary containing response from Telegram or data to send to the API."""

DVType = TypeVar("DVType")  # pylint: disable=invalid-name
ODVInput = Optional[Union["DefaultValue[DVType]", DVType]]
"""Generic type for bot method parameters which can have defaults. ``ODVInput[type]`` is the same
as ``Optional[Union[DefaultValue, type]]``."""
DVInput = Union["DefaultValue[DVType]", DVType]
"""Generic type for bot method parameters which can have defaults. ``DVInput[type]`` is the same
as ``Union[DefaultValue, type]``."""

RT = TypeVar("RT")
SCT = Union[RT, Collection[RT]]
"""Single instance or collection of instances."""

ReplyMarkup = Union[
    "InlineKeyboardMarkup", "ReplyKeyboardMarkup", "ReplyKeyboardRemove", "ForceReply"
]
"""Type alias for reply markup objects.

.. versionadded:: 20.0
"""

FieldTuple = Tuple[str, bytes, str]
"""Alias for return type of `InputFile.field_tuple`."""
UploadFileDict = Dict[str, FieldTuple]
"""Dictionary containing file data to be uploaded to the API."""
