{-# 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.DirectConnect.DescribeDirectConnectGateways
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Lists all your Direct Connect gateways or only the specified Direct
-- Connect gateway. Deleted Direct Connect gateways are not returned.
--
-- This operation returns paginated results.
module Amazonka.DirectConnect.DescribeDirectConnectGateways
  ( -- * Creating a Request
    DescribeDirectConnectGateways (..),
    newDescribeDirectConnectGateways,

    -- * Request Lenses
    describeDirectConnectGateways_directConnectGatewayId,
    describeDirectConnectGateways_maxResults,
    describeDirectConnectGateways_nextToken,

    -- * Destructuring the Response
    DescribeDirectConnectGatewaysResponse (..),
    newDescribeDirectConnectGatewaysResponse,

    -- * Response Lenses
    describeDirectConnectGatewaysResponse_directConnectGateways,
    describeDirectConnectGatewaysResponse_nextToken,
    describeDirectConnectGatewaysResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeDirectConnectGateways' smart constructor.
data DescribeDirectConnectGateways = DescribeDirectConnectGateways'
  { -- | The ID of the Direct Connect gateway.
    directConnectGatewayId :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of results to return with a single call. To retrieve
    -- the remaining results, make another call with the returned @nextToken@
    -- value.
    --
    -- If @MaxResults@ is given a value larger than 100, only 100 results are
    -- returned.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | The token provided in the previous call to retrieve the next page.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeDirectConnectGateways' 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:
--
-- 'directConnectGatewayId', 'describeDirectConnectGateways_directConnectGatewayId' - The ID of the Direct Connect gateway.
--
-- 'maxResults', 'describeDirectConnectGateways_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.
--
-- If @MaxResults@ is given a value larger than 100, only 100 results are
-- returned.
--
-- 'nextToken', 'describeDirectConnectGateways_nextToken' - The token provided in the previous call to retrieve the next page.
newDescribeDirectConnectGateways ::
  DescribeDirectConnectGateways
newDescribeDirectConnectGateways =
  DescribeDirectConnectGateways'
    { directConnectGatewayId =
        Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The ID of the Direct Connect gateway.
describeDirectConnectGateways_directConnectGatewayId :: Lens.Lens' DescribeDirectConnectGateways (Prelude.Maybe Prelude.Text)
describeDirectConnectGateways_directConnectGatewayId = Lens.lens (\DescribeDirectConnectGateways' {directConnectGatewayId} -> directConnectGatewayId) (\s@DescribeDirectConnectGateways' {} a -> s {directConnectGatewayId = a} :: DescribeDirectConnectGateways)

-- | The maximum number of results to return with a single call. To retrieve
-- the remaining results, make another call with the returned @nextToken@
-- value.
--
-- If @MaxResults@ is given a value larger than 100, only 100 results are
-- returned.
describeDirectConnectGateways_maxResults :: Lens.Lens' DescribeDirectConnectGateways (Prelude.Maybe Prelude.Int)
describeDirectConnectGateways_maxResults = Lens.lens (\DescribeDirectConnectGateways' {maxResults} -> maxResults) (\s@DescribeDirectConnectGateways' {} a -> s {maxResults = a} :: DescribeDirectConnectGateways)

-- | The token provided in the previous call to retrieve the next page.
describeDirectConnectGateways_nextToken :: Lens.Lens' DescribeDirectConnectGateways (Prelude.Maybe Prelude.Text)
describeDirectConnectGateways_nextToken = Lens.lens (\DescribeDirectConnectGateways' {nextToken} -> nextToken) (\s@DescribeDirectConnectGateways' {} a -> s {nextToken = a} :: DescribeDirectConnectGateways)

instance Core.AWSPager DescribeDirectConnectGateways where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeDirectConnectGatewaysResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeDirectConnectGatewaysResponse_directConnectGateways
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeDirectConnectGateways_nextToken
          Lens..~ rs
          Lens.^? describeDirectConnectGatewaysResponse_nextToken
          Prelude.. Lens._Just

instance
  Core.AWSRequest
    DescribeDirectConnectGateways
  where
  type
    AWSResponse DescribeDirectConnectGateways =
      DescribeDirectConnectGatewaysResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          DescribeDirectConnectGatewaysResponse'
            Prelude.<$> ( x
                            Data..?> "directConnectGateways"
                            Core..!@ Prelude.mempty
                        )
            Prelude.<*> (x Data..?> "nextToken")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance
  Prelude.Hashable
    DescribeDirectConnectGateways
  where
  hashWithSalt _salt DescribeDirectConnectGateways' {..} =
    _salt
      `Prelude.hashWithSalt` directConnectGatewayId
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeDirectConnectGateways where
  rnf DescribeDirectConnectGateways' {..} =
    Prelude.rnf directConnectGatewayId
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken

instance Data.ToHeaders DescribeDirectConnectGateways where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "OvertureService.DescribeDirectConnectGateways" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeDirectConnectGateways where
  toJSON DescribeDirectConnectGateways' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("directConnectGatewayId" Data..=)
              Prelude.<$> directConnectGatewayId,
            ("maxResults" Data..=) Prelude.<$> maxResults,
            ("nextToken" Data..=) Prelude.<$> nextToken
          ]
      )

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

instance Data.ToQuery DescribeDirectConnectGateways where
  toQuery = Prelude.const Prelude.mempty

-- | /See:/ 'newDescribeDirectConnectGatewaysResponse' smart constructor.
data DescribeDirectConnectGatewaysResponse = DescribeDirectConnectGatewaysResponse'
  { -- | The Direct Connect gateways.
    directConnectGateways :: Prelude.Maybe [DirectConnectGateway],
    -- | The token to retrieve the next page.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeDirectConnectGatewaysResponse' 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:
--
-- 'directConnectGateways', 'describeDirectConnectGatewaysResponse_directConnectGateways' - The Direct Connect gateways.
--
-- 'nextToken', 'describeDirectConnectGatewaysResponse_nextToken' - The token to retrieve the next page.
--
-- 'httpStatus', 'describeDirectConnectGatewaysResponse_httpStatus' - The response's http status code.
newDescribeDirectConnectGatewaysResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeDirectConnectGatewaysResponse
newDescribeDirectConnectGatewaysResponse pHttpStatus_ =
  DescribeDirectConnectGatewaysResponse'
    { directConnectGateways =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The Direct Connect gateways.
describeDirectConnectGatewaysResponse_directConnectGateways :: Lens.Lens' DescribeDirectConnectGatewaysResponse (Prelude.Maybe [DirectConnectGateway])
describeDirectConnectGatewaysResponse_directConnectGateways = Lens.lens (\DescribeDirectConnectGatewaysResponse' {directConnectGateways} -> directConnectGateways) (\s@DescribeDirectConnectGatewaysResponse' {} a -> s {directConnectGateways = a} :: DescribeDirectConnectGatewaysResponse) Prelude.. Lens.mapping Lens.coerced

-- | The token to retrieve the next page.
describeDirectConnectGatewaysResponse_nextToken :: Lens.Lens' DescribeDirectConnectGatewaysResponse (Prelude.Maybe Prelude.Text)
describeDirectConnectGatewaysResponse_nextToken = Lens.lens (\DescribeDirectConnectGatewaysResponse' {nextToken} -> nextToken) (\s@DescribeDirectConnectGatewaysResponse' {} a -> s {nextToken = a} :: DescribeDirectConnectGatewaysResponse)

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

instance
  Prelude.NFData
    DescribeDirectConnectGatewaysResponse
  where
  rnf DescribeDirectConnectGatewaysResponse' {..} =
    Prelude.rnf directConnectGateways
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus