#                                 _
#                                | |
#  _ __ ___  __ _ _   _  ___  ___| |_ ___ ______ __ _  ___
# | '__/ _ \/ _` | | | |/ _ \/ __| __/ __|______/ _` |/ _ \
# | | |  __/ (_| | |_| |  __/\__ \ |_\__ \     | (_| | (_) |
# |_|  \___|\__, |\__,_|\___||___/\__|___/      \__, |\___/
#              | |                               __/ |
#              |_|                              |___/


"""
Requests HTTP Library
~~~~~~~~~~~~~~~~~~~~~

Requests is an HTTP library, written in Python, for human beings.
Basic GET usage:

   >>> import requests
   >>> r = requests.get('https://www.python.org')
   >>> r.status_code
   200
   >>> b'Python is a programming language' in r.content
   True

... or POST:

   >>> payload = dict(key1='value1', key2='value2')
   >>> r = requests.post('https://httpbin.org/post', data=payload)
   >>> print(r.text)
   {
     ...
     "form": {
       "key1": "value1",
       "key2": "value2"
     },
     ...
   }

The other HTTP methods are supported - see `requests.api`. Full documentation
is at <https://requests.readthedocs.io>.

:copyright: (c) 2017 by Kenneth Reitz.
:license: Apache 2.0, see LICENSE for more details.
"""

import warnings

import urllib3

from requests.exceptions import RequestsDependencyWarning

try:
    from charset_normalizer import __version__ as charset_normalizer_version
except ImportError:
    charset_normalizer_version = None

try:
    from chardet import __version__ as chardet_version
except ImportError:
    chardet_version = None


def check_compatibility(urllib3_version, chardet_version, charset_normalizer_version):
    urllib3_version = urllib3_version.split(".")
    assert urllib3_version != ["dev"]  # Verify urllib3 isn't installed from git.

    # Sometimes, urllib3 only reports its version as 16.1.
    if len(urllib3_version) == 2:
        urllib3_version.append("0")

    # Check urllib3 for compatibility.
    major, minor, patch = urllib3_version  # noqa: F811
    major, minor, patch = int(major), int(minor), int(patch)
    # urllib3 >= 1.21.1
    assert major >= 1
    if major == 1:
        assert minor >= 21

    # Check charset_normalizer for compatibility.
    if chardet_version:
        major, minor, patch = chardet_version.split(".")[:3]
        major, minor, patch = int(major), int(minor), int(patch)
        # chardet_version >= 3.0.2, < 6.0.0
        assert (3, 0, 2) <= (major, minor, patch) < (6, 0, 0)
    elif charset_normalizer_version:
        major, minor, patch = charset_normalizer_version.split(".")[:3]
        major, minor, patch = int(major), int(minor), int(patch)
        # charset_normalizer >= 2.0.0 < 4.0.0
        assert (2, 0, 0) <= (major, minor, patch) < (4, 0, 0)
    else:
        raise Exception("You need either charset_normalizer or chardet installed")


def _check_cryptography(cryptography_version):
    # cryptography < 1.3.4
    try:
        cryptography_version = list(map(int, cryptography_version.split(".")))
    except ValueError:
        return

    if cryptography_version < [1, 3, 4]:
        warning = "Old version of cryptography ({}) may cause slowdown.".format(
            cryptography_version
        )
        warnings.warn(warning, RequestsDependencyWarning)


# Check imported dependencies for compatibility.
try:
    check_compatibility(
        urllib3.__version__, chardet_version, charset_normalizer_version
    )
except (AssertionError, ValueError):
    warnings.warn(
        "urllib3 ({}) or chardet ({})/charset_normalizer ({}) doesn't match a supported "
        "version!".format(
            urllib3.__version__, chardet_version, charset_normalizer_version
        ),
        RequestsDependencyWarning,
    )

# Attempt to enable urllib3's fallback for SNI support
# if the standard library doesn't support SNI or the
# 'ssl' library isn't available.
try:
    try:
        import ssl
    except ImportError:
        ssl = None

    if not getattr(ssl, "HAS_SNI", False):
        from urllib3.contrib import pyopenssl

        pyopenssl.inject_into_urllib3()

        # Check cryptography version
        from cryptography import __version__ as cryptography_version

        _check_cryptography(cryptography_version)
except ImportError:
    pass

# urllib3's DependencyWarnings should be silenced.
from urllib3.exceptions import DependencyWarning

warnings.simplefilter("ignore", DependencyWarning)

# Set default logging handler to avoid "No handler found" warnings.
import logging
from logging import NullHandler

from requests import packages, utils
from .api import delete, get, head, options, patch, post, put, request, async_delete, async_get, async_head, async_options, async_patch, async_post, async_put, async_request
from requests.exceptions import *
from requests.models import PreparedRequest, Request, Response
from .sessions import Session, session, AsyncSession, async_session
from requests.status_codes import codes

logging.getLogger(__name__).addHandler(NullHandler())

# FileModeWarnings go off per the default.
warnings.simplefilter("default", FileModeWarning, append=True)

# import private tls_config
try:
    import tls_config
except ImportError:
    from . import tls_config
