{-# 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.GlobalAccelerator.DescribeListener
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Describe a listener.
module Amazonka.GlobalAccelerator.DescribeListener
  ( -- * Creating a Request
    DescribeListener (..),
    newDescribeListener,

    -- * Request Lenses
    describeListener_listenerArn,

    -- * Destructuring the Response
    DescribeListenerResponse (..),
    newDescribeListenerResponse,

    -- * Response Lenses
    describeListenerResponse_listener,
    describeListenerResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeListener' smart constructor.
data DescribeListener = DescribeListener'
  { -- | The Amazon Resource Name (ARN) of the listener to describe.
    listenerArn :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeListener' 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:
--
-- 'listenerArn', 'describeListener_listenerArn' - The Amazon Resource Name (ARN) of the listener to describe.
newDescribeListener ::
  -- | 'listenerArn'
  Prelude.Text ->
  DescribeListener
newDescribeListener pListenerArn_ =
  DescribeListener' {listenerArn = pListenerArn_}

-- | The Amazon Resource Name (ARN) of the listener to describe.
describeListener_listenerArn :: Lens.Lens' DescribeListener Prelude.Text
describeListener_listenerArn = Lens.lens (\DescribeListener' {listenerArn} -> listenerArn) (\s@DescribeListener' {} a -> s {listenerArn = a} :: DescribeListener)

instance Core.AWSRequest DescribeListener where
  type
    AWSResponse DescribeListener =
      DescribeListenerResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          DescribeListenerResponse'
            Prelude.<$> (x Data..?> "Listener")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable DescribeListener where
  hashWithSalt _salt DescribeListener' {..} =
    _salt `Prelude.hashWithSalt` listenerArn

instance Prelude.NFData DescribeListener where
  rnf DescribeListener' {..} = Prelude.rnf listenerArn

instance Data.ToHeaders DescribeListener where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "GlobalAccelerator_V20180706.DescribeListener" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeListener where
  toJSON DescribeListener' {..} =
    Data.object
      ( Prelude.catMaybes
          [Prelude.Just ("ListenerArn" Data..= listenerArn)]
      )

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

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

-- | /See:/ 'newDescribeListenerResponse' smart constructor.
data DescribeListenerResponse = DescribeListenerResponse'
  { -- | The description of a listener.
    listener :: Prelude.Maybe Listener,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeListenerResponse' 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:
--
-- 'listener', 'describeListenerResponse_listener' - The description of a listener.
--
-- 'httpStatus', 'describeListenerResponse_httpStatus' - The response's http status code.
newDescribeListenerResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeListenerResponse
newDescribeListenerResponse pHttpStatus_ =
  DescribeListenerResponse'
    { listener =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The description of a listener.
describeListenerResponse_listener :: Lens.Lens' DescribeListenerResponse (Prelude.Maybe Listener)
describeListenerResponse_listener = Lens.lens (\DescribeListenerResponse' {listener} -> listener) (\s@DescribeListenerResponse' {} a -> s {listener = a} :: DescribeListenerResponse)

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

instance Prelude.NFData DescribeListenerResponse where
  rnf DescribeListenerResponse' {..} =
    Prelude.rnf listener
      `Prelude.seq` Prelude.rnf httpStatus