# coding: utf-8

"""
    Airflow API

    Airflow API. All endpoints located under ``/api/v2`` can be used safely, are stable and backward compatible. Endpoints located under ``/ui`` are dedicated to the UI and are subject to breaking change depending on the need of the frontend. Users should not rely on those but use the public ones instead.

    The version of the OpenAPI document: 2
    Generated by OpenAPI Generator (https://openapi-generator.tech)

    Do not edit the class manually.
"""  # noqa: E501


import io
import json
import re
import ssl

import urllib3

from airflow_client.client.exceptions import ApiException, ApiValueError

SUPPORTED_SOCKS_PROXIES = {"socks5", "socks5h", "socks4", "socks4a"}
RESTResponseType = urllib3.HTTPResponse


def is_socks_proxy_url(url):
    if url is None:
        return False
    split_section = url.split("://")
    if len(split_section) < 2:
        return False
    else:
        return split_section[0].lower() in SUPPORTED_SOCKS_PROXIES


class RESTResponse(io.IOBase):

    def __init__(self, resp) -> None:
        self.response = resp
        self.status = resp.status
        self.reason = resp.reason
        self.data = None

    def read(self):
        if self.data is None:
            self.data = self.response.data
        return self.data

    @property
    def headers(self):
        """Returns a dictionary of response headers."""
        return self.response.headers

    def getheaders(self):
        """Returns a dictionary of the response headers; use ``headers`` instead."""
        return self.response.headers

    def getheader(self, name, default=None):
        """Returns a given response header; use ``headers.get()`` instead."""
        return self.response.headers.get(name, default)


class RESTClientObject:

    def __init__(self, configuration) -> None:
        # urllib3.PoolManager will pass all kw parameters to connectionpool
        # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/poolmanager.py#L75  # noqa: E501
        # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/connectionpool.py#L680  # noqa: E501
        # Custom SSL certificates and client certificates: http://urllib3.readthedocs.io/en/latest/advanced-usage.html  # noqa: E501

        # cert_reqs
        if configuration.verify_ssl:
            cert_reqs = ssl.CERT_REQUIRED
        else:
            cert_reqs = ssl.CERT_NONE

        pool_args = {
            "cert_reqs": cert_reqs,
            "ca_certs": configuration.ssl_ca_cert,
            "cert_file": configuration.cert_file,
            "key_file": configuration.key_file,
            "ca_cert_data": configuration.ca_cert_data,
        }
        if configuration.assert_hostname is not None:
            pool_args['assert_hostname'] = (
                configuration.assert_hostname
            )

        if configuration.retries is not None:
            pool_args['retries'] = configuration.retries

        if configuration.tls_server_name:
            pool_args['server_hostname'] = configuration.tls_server_name


        if configuration.socket_options is not None:
            pool_args['socket_options'] = configuration.socket_options

        if configuration.connection_pool_maxsize is not None:
            pool_args['maxsize'] = configuration.connection_pool_maxsize

        # https pool manager
        self.pool_manager: urllib3.PoolManager

        if configuration.proxy:
            if is_socks_proxy_url(configuration.proxy):
                from urllib3.contrib.socks import SOCKSProxyManager
                pool_args["proxy_url"] = configuration.proxy
                pool_args["headers"] = configuration.proxy_headers
                self.pool_manager = SOCKSProxyManager(**pool_args)
            else:
                pool_args["proxy_url"] = configuration.proxy
                pool_args["proxy_headers"] = configuration.proxy_headers
                self.pool_manager = urllib3.ProxyManager(**pool_args)
        else:
            self.pool_manager = urllib3.PoolManager(**pool_args)

    def request(
        self,
        method,
        url,
        headers=None,
        body=None,
        post_params=None,
        _request_timeout=None
    ):
        """Perform requests.

        :param method: http request method
        :param url: http request url
        :param headers: http request headers
        :param body: request json body, for `application/json`
        :param post_params: request post parameters,
                            `application/x-www-form-urlencoded`
                            and `multipart/form-data`
        :param _request_timeout: timeout setting for this request. If one
                                 number provided, it will be total request
                                 timeout. It can also be a pair (tuple) of
                                 (connection, read) timeouts.
        """
        method = method.upper()
        assert method in [
            'GET',
            'HEAD',
            'DELETE',
            'POST',
            'PUT',
            'PATCH',
            'OPTIONS'
        ]

        if post_params and body:
            raise ApiValueError(
                "body parameter cannot be used with post_params parameter."
            )

        post_params = post_params or {}
        headers = headers or {}

        timeout = None
        if _request_timeout:
            if isinstance(_request_timeout, (int, float)):
                timeout = urllib3.Timeout(total=_request_timeout)
            elif (
                    isinstance(_request_timeout, tuple)
                    and len(_request_timeout) == 2
                ):
                timeout = urllib3.Timeout(
                    connect=_request_timeout[0],
                    read=_request_timeout[1]
                )

        try:
            # For `POST`, `PUT`, `PATCH`, `OPTIONS`, `DELETE`
            if method in ['POST', 'PUT', 'PATCH', 'OPTIONS', 'DELETE']:

                # no content type provided or payload is json
                content_type = headers.get('Content-Type')
                if (
                    not content_type
                    or re.search('json', content_type, re.IGNORECASE)
                ):
                    request_body = None
                    if body is not None:
                        request_body = json.dumps(body)
                    r = self.pool_manager.request(
                        method,
                        url,
                        body=request_body,
                        timeout=timeout,
                        headers=headers,
                        preload_content=False
                    )
                elif content_type == 'application/x-www-form-urlencoded':
                    r = self.pool_manager.request(
                        method,
                        url,
                        fields=post_params,
                        encode_multipart=False,
                        timeout=timeout,
                        headers=headers,
                        preload_content=False
                    )
                elif content_type == 'multipart/form-data':
                    # must del headers['Content-Type'], or the correct
                    # Content-Type which generated by urllib3 will be
                    # overwritten.
                    del headers['Content-Type']
                    # Ensures that dict objects are serialized
                    post_params = [(a, json.dumps(b)) if isinstance(b, dict) else (a,b) for a, b in post_params]
                    r = self.pool_manager.request(
                        method,
                        url,
                        fields=post_params,
                        encode_multipart=True,
                        timeout=timeout,
                        headers=headers,
                        preload_content=False
                    )
                # Pass a `string` parameter directly in the body to support
                # other content types than JSON when `body` argument is
                # provided in serialized form.
                elif isinstance(body, str) or isinstance(body, bytes):
                    r = self.pool_manager.request(
                        method,
                        url,
                        body=body,
                        timeout=timeout,
                        headers=headers,
                        preload_content=False
                    )
                elif headers['Content-Type'].startswith('text/') and isinstance(body, bool):
                    request_body = "true" if body else "false"
                    r = self.pool_manager.request(
                        method,
                        url,
                        body=request_body,
                        preload_content=False,
                        timeout=timeout,
                        headers=headers)
                else:
                    # Cannot generate the request from given parameters
                    msg = """Cannot prepare a request message for provided
                             arguments. Please check that your arguments match
                             declared content type."""
                    raise ApiException(status=0, reason=msg)
            # For `GET`, `HEAD`
            else:
                r = self.pool_manager.request(
                    method,
                    url,
                    fields={},
                    timeout=timeout,
                    headers=headers,
                    preload_content=False
                )
        except urllib3.exceptions.SSLError as e:
            msg = "\n".join([type(e).__name__, str(e)])
            raise ApiException(status=0, reason=msg)

        return RESTResponse(r)
