# pylint: disable=line-too-long,useless-suppression
# coding=utf-8
# --------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.
# Code generated by Microsoft (R) AutoRest Code Generator.
# Changes may cause incorrect behavior and will be lost if the code is regenerated.
# --------------------------------------------------------------------------
from collections.abc import MutableMapping
from typing import Any, Callable, Iterator, Optional, TypeVar, Union, cast

from azure.core import PipelineClient
from azure.core.exceptions import (
    ClientAuthenticationError,
    HttpResponseError,
    ResourceExistsError,
    ResourceNotFoundError,
    ResourceNotModifiedError,
    StreamClosedError,
    StreamConsumedError,
    map_error,
)
from azure.core.pipeline import PipelineResponse
from azure.core.polling import LROPoller, NoPolling, PollingMethod
from azure.core.rest import HttpRequest, HttpResponse
from azure.core.tracing.decorator import distributed_trace
from azure.core.utils import case_insensitive_dict
from azure.mgmt.core.exceptions import ARMErrorFormat
from azure.mgmt.core.polling.arm_polling import ARMPolling

from .. import models as _models
from .._configuration import MySQLManagementClientConfiguration
from .._utils.serialization import Deserializer, Serializer

T = TypeVar("T")
ClsType = Optional[Callable[[PipelineResponse[HttpRequest, HttpResponse], T, dict[str, Any]], Any]]
List = list

_SERIALIZER = Serializer()
_SERIALIZER.client_side_validation = False


def build_cutover_migration_request(
    resource_group_name: str, server_name: str, subscription_id: str, **kwargs: Any
) -> HttpRequest:
    _headers = case_insensitive_dict(kwargs.pop("headers", {}) or {})
    _params = case_insensitive_dict(kwargs.pop("params", {}) or {})

    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-06-01-preview"))
    accept = _headers.pop("Accept", "application/json")

    # Construct URL
    _url = kwargs.pop(
        "template_url",
        "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DBforMySQL/flexibleServers/{serverName}/cutoverMigration",
    )
    path_format_arguments = {
        "subscriptionId": _SERIALIZER.url("subscription_id", subscription_id, "str"),
        "resourceGroupName": _SERIALIZER.url(
            "resource_group_name", resource_group_name, "str", max_length=90, min_length=1
        ),
        "serverName": _SERIALIZER.url(
            "server_name", server_name, "str", max_length=63, min_length=1, pattern=r"^[a-z0-9][-a-z0-9]*(?<!-)$"
        ),
    }

    _url: str = _url.format(**path_format_arguments)  # type: ignore

    # Construct parameters
    _params["api-version"] = _SERIALIZER.query("api_version", api_version, "str")

    # Construct headers
    _headers["Accept"] = _SERIALIZER.header("accept", accept, "str")

    return HttpRequest(method="POST", url=_url, params=_params, headers=_headers, **kwargs)


class ServersMigrationOperations:
    """
    .. warning::
        **DO NOT** instantiate this class directly.

        Instead, you should access the following operations through
        :class:`~azure.mgmt.mysqlflexibleservers.MySQLManagementClient`'s
        :attr:`servers_migration` attribute.
    """

    models = _models

    def __init__(self, *args, **kwargs) -> None:
        input_args = list(args)
        self._client: PipelineClient = input_args.pop(0) if input_args else kwargs.pop("client")
        self._config: MySQLManagementClientConfiguration = input_args.pop(0) if input_args else kwargs.pop("config")
        self._serialize: Serializer = input_args.pop(0) if input_args else kwargs.pop("serializer")
        self._deserialize: Deserializer = input_args.pop(0) if input_args else kwargs.pop("deserializer")

    def _cutover_migration_initial(self, resource_group_name: str, server_name: str, **kwargs: Any) -> Iterator[bytes]:
        error_map: MutableMapping = {
            401: ClientAuthenticationError,
            404: ResourceNotFoundError,
            409: ResourceExistsError,
            304: ResourceNotModifiedError,
        }
        error_map.update(kwargs.pop("error_map", {}) or {})

        _headers = kwargs.pop("headers", {}) or {}
        _params = case_insensitive_dict(kwargs.pop("params", {}) or {})

        api_version: str = kwargs.pop("api_version", _params.pop("api-version", self._config.api_version))
        cls: ClsType[Iterator[bytes]] = kwargs.pop("cls", None)

        _request = build_cutover_migration_request(
            resource_group_name=resource_group_name,
            server_name=server_name,
            subscription_id=self._config.subscription_id,
            api_version=api_version,
            headers=_headers,
            params=_params,
        )
        _request.url = self._client.format_url(_request.url)

        _decompress = kwargs.pop("decompress", True)
        _stream = True
        pipeline_response: PipelineResponse = self._client._pipeline.run(  # pylint: disable=protected-access
            _request, stream=_stream, **kwargs
        )

        response = pipeline_response.http_response

        if response.status_code not in [200, 202]:
            try:
                response.read()  # Load the body in memory and close the socket
            except (StreamConsumedError, StreamClosedError):
                pass
            map_error(status_code=response.status_code, response=response, error_map=error_map)
            error = self._deserialize.failsafe_deserialize(
                _models.ErrorResponse,
                pipeline_response,
            )
            raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)

        response_headers = {}
        if response.status_code == 202:
            response_headers["Azure-AsyncOperation"] = self._deserialize(
                "str", response.headers.get("Azure-AsyncOperation")
            )
            response_headers["Location"] = self._deserialize("str", response.headers.get("Location"))

        deserialized = response.stream_download(self._client._pipeline, decompress=_decompress)

        if cls:
            return cls(pipeline_response, deserialized, response_headers)  # type: ignore

        return deserialized  # type: ignore

    @distributed_trace
    def begin_cutover_migration(
        self, resource_group_name: str, server_name: str, **kwargs: Any
    ) -> LROPoller[_models.Server]:
        """Cutover migration for MySQL import, it will switch source elastic server DNS to flexible
        server.

        :param resource_group_name: The name of the resource group. The name is case insensitive.
         Required.
        :type resource_group_name: str
        :param server_name: The name of the server. Required.
        :type server_name: str
        :return: An instance of LROPoller that returns either Server or the result of cls(response)
        :rtype: ~azure.core.polling.LROPoller[~azure.mgmt.mysqlflexibleservers.models.Server]
        :raises ~azure.core.exceptions.HttpResponseError:
        """
        _headers = kwargs.pop("headers", {}) or {}
        _params = case_insensitive_dict(kwargs.pop("params", {}) or {})

        api_version: str = kwargs.pop("api_version", _params.pop("api-version", self._config.api_version))
        cls: ClsType[_models.Server] = kwargs.pop("cls", None)
        polling: Union[bool, PollingMethod] = kwargs.pop("polling", True)
        lro_delay = kwargs.pop("polling_interval", self._config.polling_interval)
        cont_token: Optional[str] = kwargs.pop("continuation_token", None)
        if cont_token is None:
            raw_result = self._cutover_migration_initial(
                resource_group_name=resource_group_name,
                server_name=server_name,
                api_version=api_version,
                cls=lambda x, y, z: x,
                headers=_headers,
                params=_params,
                **kwargs
            )
            raw_result.http_response.read()  # type: ignore
        kwargs.pop("error_map", None)

        def get_long_running_output(pipeline_response):
            deserialized = self._deserialize("Server", pipeline_response.http_response)
            if cls:
                return cls(pipeline_response, deserialized, {})  # type: ignore
            return deserialized

        if polling is True:
            polling_method: PollingMethod = cast(
                PollingMethod, ARMPolling(lro_delay, lro_options={"final-state-via": "azure-async-operation"}, **kwargs)
            )
        elif polling is False:
            polling_method = cast(PollingMethod, NoPolling())
        else:
            polling_method = polling
        if cont_token:
            return LROPoller[_models.Server].from_continuation_token(
                polling_method=polling_method,
                continuation_token=cont_token,
                client=self._client,
                deserialization_callback=get_long_running_output,
            )
        return LROPoller[_models.Server](
            self._client, raw_result, get_long_running_output, polling_method  # type: ignore
        )
