# --------------------------------------------------------------------------
#
# Copyright (c) Microsoft Corporation. All rights reserved.
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the ""Software""), to
# deal in the Software without restriction, including without limitation the
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# --------------------------------------------------------------------------
import collections.abc
from typing import (
    AsyncIterable,
    Dict,
    Iterable,
    Tuple,
    Union,
    MutableMapping,
)

from ._helpers import _shared_set_content_body
ContentType = Union[str, bytes, Iterable[bytes], AsyncIterable[bytes]]

def set_content_body(content: ContentType) -> Tuple[
    MutableMapping[str, str], ContentType
]:
    headers, body = _shared_set_content_body(content)
    if body is not None:
        return headers, body
    if isinstance(content, collections.abc.AsyncIterable):
        return {}, content
    raise TypeError(
        "Unexpected type for 'content': '{}'. ".format(type(content)) +
        "We expect 'content' to either be str, bytes, or an Iterable / AsyncIterable"
    )
