{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-binds #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.EC2.DescribeVpcClassicLinkDnsSupport
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- We are retiring EC2-Classic. We recommend that you migrate from
-- EC2-Classic to a VPC. For more information, see
-- <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/vpc-migrate.html Migrate from EC2-Classic to a VPC>
-- in the /Amazon Elastic Compute Cloud User Guide/.
--
-- Describes the ClassicLink DNS support status of one or more VPCs. If
-- enabled, the DNS hostname of a linked EC2-Classic instance resolves to
-- its private IP address when addressed from an instance in the VPC to
-- which it\'s linked. Similarly, the DNS hostname of an instance in a VPC
-- resolves to its private IP address when addressed from a linked
-- EC2-Classic instance. For more information, see
-- <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/vpc-classiclink.html ClassicLink>
-- in the /Amazon Elastic Compute Cloud User Guide/.
--
-- This operation returns paginated results.
module Amazonka.EC2.DescribeVpcClassicLinkDnsSupport
  ( -- * Creating a Request
    DescribeVpcClassicLinkDnsSupport (..),
    newDescribeVpcClassicLinkDnsSupport,

    -- * Request Lenses
    describeVpcClassicLinkDnsSupport_maxResults,
    describeVpcClassicLinkDnsSupport_nextToken,
    describeVpcClassicLinkDnsSupport_vpcIds,

    -- * Destructuring the Response
    DescribeVpcClassicLinkDnsSupportResponse (..),
    newDescribeVpcClassicLinkDnsSupportResponse,

    -- * Response Lenses
    describeVpcClassicLinkDnsSupportResponse_nextToken,
    describeVpcClassicLinkDnsSupportResponse_vpcs,
    describeVpcClassicLinkDnsSupportResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.EC2.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newDescribeVpcClassicLinkDnsSupport' smart constructor.
data DescribeVpcClassicLinkDnsSupport = DescribeVpcClassicLinkDnsSupport'
  { -- | The maximum number of results to return with a single call. To retrieve
    -- the remaining results, make another call with the returned @nextToken@
    -- value.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | The token for the next page of results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | One or more VPC IDs.
    vpcIds :: Prelude.Maybe [Prelude.Text]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeVpcClassicLinkDnsSupport' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'maxResults', 'describeVpcClassicLinkDnsSupport_maxResults' - The maximum number of results to return with a single call. To retrieve
-- the remaining results, make another call with the returned @nextToken@
-- value.
--
-- 'nextToken', 'describeVpcClassicLinkDnsSupport_nextToken' - The token for the next page of results.
--
-- 'vpcIds', 'describeVpcClassicLinkDnsSupport_vpcIds' - One or more VPC IDs.
newDescribeVpcClassicLinkDnsSupport ::
  DescribeVpcClassicLinkDnsSupport
newDescribeVpcClassicLinkDnsSupport =
  DescribeVpcClassicLinkDnsSupport'
    { maxResults =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      vpcIds = Prelude.Nothing
    }

-- | The maximum number of results to return with a single call. To retrieve
-- the remaining results, make another call with the returned @nextToken@
-- value.
describeVpcClassicLinkDnsSupport_maxResults :: Lens.Lens' DescribeVpcClassicLinkDnsSupport (Prelude.Maybe Prelude.Natural)
describeVpcClassicLinkDnsSupport_maxResults = Lens.lens (\DescribeVpcClassicLinkDnsSupport' {maxResults} -> maxResults) (\s@DescribeVpcClassicLinkDnsSupport' {} a -> s {maxResults = a} :: DescribeVpcClassicLinkDnsSupport)

-- | The token for the next page of results.
describeVpcClassicLinkDnsSupport_nextToken :: Lens.Lens' DescribeVpcClassicLinkDnsSupport (Prelude.Maybe Prelude.Text)
describeVpcClassicLinkDnsSupport_nextToken = Lens.lens (\DescribeVpcClassicLinkDnsSupport' {nextToken} -> nextToken) (\s@DescribeVpcClassicLinkDnsSupport' {} a -> s {nextToken = a} :: DescribeVpcClassicLinkDnsSupport)

-- | One or more VPC IDs.
describeVpcClassicLinkDnsSupport_vpcIds :: Lens.Lens' DescribeVpcClassicLinkDnsSupport (Prelude.Maybe [Prelude.Text])
describeVpcClassicLinkDnsSupport_vpcIds = Lens.lens (\DescribeVpcClassicLinkDnsSupport' {vpcIds} -> vpcIds) (\s@DescribeVpcClassicLinkDnsSupport' {} a -> s {vpcIds = a} :: DescribeVpcClassicLinkDnsSupport) Prelude.. Lens.mapping Lens.coerced

instance
  Core.AWSPager
    DescribeVpcClassicLinkDnsSupport
  where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeVpcClassicLinkDnsSupportResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeVpcClassicLinkDnsSupportResponse_vpcs
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeVpcClassicLinkDnsSupport_nextToken
          Lens..~ rs
          Lens.^? describeVpcClassicLinkDnsSupportResponse_nextToken
          Prelude.. Lens._Just

instance
  Core.AWSRequest
    DescribeVpcClassicLinkDnsSupport
  where
  type
    AWSResponse DescribeVpcClassicLinkDnsSupport =
      DescribeVpcClassicLinkDnsSupportResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXML
      ( \s h x ->
          DescribeVpcClassicLinkDnsSupportResponse'
            Prelude.<$> (x Data..@? "nextToken")
            Prelude.<*> ( x
                            Data..@? "vpcs"
                            Core..!@ Prelude.mempty
                            Prelude.>>= Core.may (Data.parseXMLList "item")
                        )
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance
  Prelude.Hashable
    DescribeVpcClassicLinkDnsSupport
  where
  hashWithSalt
    _salt
    DescribeVpcClassicLinkDnsSupport' {..} =
      _salt
        `Prelude.hashWithSalt` maxResults
        `Prelude.hashWithSalt` nextToken
        `Prelude.hashWithSalt` vpcIds

instance
  Prelude.NFData
    DescribeVpcClassicLinkDnsSupport
  where
  rnf DescribeVpcClassicLinkDnsSupport' {..} =
    Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf vpcIds

instance
  Data.ToHeaders
    DescribeVpcClassicLinkDnsSupport
  where
  toHeaders = Prelude.const Prelude.mempty

instance Data.ToPath DescribeVpcClassicLinkDnsSupport where
  toPath = Prelude.const "/"

instance
  Data.ToQuery
    DescribeVpcClassicLinkDnsSupport
  where
  toQuery DescribeVpcClassicLinkDnsSupport' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ( "DescribeVpcClassicLinkDnsSupport" ::
                      Prelude.ByteString
                  ),
        "Version"
          Data.=: ("2016-11-15" :: Prelude.ByteString),
        "MaxResults" Data.=: maxResults,
        "NextToken" Data.=: nextToken,
        Data.toQuery
          (Data.toQueryList "VpcIds" Prelude.<$> vpcIds)
      ]

-- | /See:/ 'newDescribeVpcClassicLinkDnsSupportResponse' smart constructor.
data DescribeVpcClassicLinkDnsSupportResponse = DescribeVpcClassicLinkDnsSupportResponse'
  { -- | The token to use to retrieve the next page of results. This value is
    -- @null@ when there are no more results to return.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | Information about the ClassicLink DNS support status of the VPCs.
    vpcs :: Prelude.Maybe [ClassicLinkDnsSupport],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeVpcClassicLinkDnsSupportResponse' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'nextToken', 'describeVpcClassicLinkDnsSupportResponse_nextToken' - The token to use to retrieve the next page of results. This value is
-- @null@ when there are no more results to return.
--
-- 'vpcs', 'describeVpcClassicLinkDnsSupportResponse_vpcs' - Information about the ClassicLink DNS support status of the VPCs.
--
-- 'httpStatus', 'describeVpcClassicLinkDnsSupportResponse_httpStatus' - The response's http status code.
newDescribeVpcClassicLinkDnsSupportResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeVpcClassicLinkDnsSupportResponse
newDescribeVpcClassicLinkDnsSupportResponse
  pHttpStatus_ =
    DescribeVpcClassicLinkDnsSupportResponse'
      { nextToken =
          Prelude.Nothing,
        vpcs = Prelude.Nothing,
        httpStatus = pHttpStatus_
      }

-- | The token to use to retrieve the next page of results. This value is
-- @null@ when there are no more results to return.
describeVpcClassicLinkDnsSupportResponse_nextToken :: Lens.Lens' DescribeVpcClassicLinkDnsSupportResponse (Prelude.Maybe Prelude.Text)
describeVpcClassicLinkDnsSupportResponse_nextToken = Lens.lens (\DescribeVpcClassicLinkDnsSupportResponse' {nextToken} -> nextToken) (\s@DescribeVpcClassicLinkDnsSupportResponse' {} a -> s {nextToken = a} :: DescribeVpcClassicLinkDnsSupportResponse)

-- | Information about the ClassicLink DNS support status of the VPCs.
describeVpcClassicLinkDnsSupportResponse_vpcs :: Lens.Lens' DescribeVpcClassicLinkDnsSupportResponse (Prelude.Maybe [ClassicLinkDnsSupport])
describeVpcClassicLinkDnsSupportResponse_vpcs = Lens.lens (\DescribeVpcClassicLinkDnsSupportResponse' {vpcs} -> vpcs) (\s@DescribeVpcClassicLinkDnsSupportResponse' {} a -> s {vpcs = a} :: DescribeVpcClassicLinkDnsSupportResponse) Prelude.. Lens.mapping Lens.coerced

-- | The response's http status code.
describeVpcClassicLinkDnsSupportResponse_httpStatus :: Lens.Lens' DescribeVpcClassicLinkDnsSupportResponse Prelude.Int
describeVpcClassicLinkDnsSupportResponse_httpStatus = Lens.lens (\DescribeVpcClassicLinkDnsSupportResponse' {httpStatus} -> httpStatus) (\s@DescribeVpcClassicLinkDnsSupportResponse' {} a -> s {httpStatus = a} :: DescribeVpcClassicLinkDnsSupportResponse)

instance
  Prelude.NFData
    DescribeVpcClassicLinkDnsSupportResponse
  where
  rnf DescribeVpcClassicLinkDnsSupportResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf vpcs
      `Prelude.seq` Prelude.rnf httpStatus