{-# 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.StorageGateway.DescribeVTLDevices
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns a description of virtual tape library (VTL) devices for the
-- specified tape gateway. In the response, Storage Gateway returns VTL
-- device information.
--
-- This operation is only supported in the tape gateway type.
--
-- This operation returns paginated results.
module Amazonka.StorageGateway.DescribeVTLDevices
  ( -- * Creating a Request
    DescribeVTLDevices (..),
    newDescribeVTLDevices,

    -- * Request Lenses
    describeVTLDevices_limit,
    describeVTLDevices_marker,
    describeVTLDevices_vTLDeviceARNs,
    describeVTLDevices_gatewayARN,

    -- * Destructuring the Response
    DescribeVTLDevicesResponse (..),
    newDescribeVTLDevicesResponse,

    -- * Response Lenses
    describeVTLDevicesResponse_gatewayARN,
    describeVTLDevicesResponse_marker,
    describeVTLDevicesResponse_vTLDevices,
    describeVTLDevicesResponse_httpStatus,
  )
where

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

-- | DescribeVTLDevicesInput
--
-- /See:/ 'newDescribeVTLDevices' smart constructor.
data DescribeVTLDevices = DescribeVTLDevices'
  { -- | Specifies that the number of VTL devices described be limited to the
    -- specified number.
    limit :: Prelude.Maybe Prelude.Natural,
    -- | An opaque string that indicates the position at which to begin
    -- describing the VTL devices.
    marker :: Prelude.Maybe Prelude.Text,
    -- | An array of strings, where each string represents the Amazon Resource
    -- Name (ARN) of a VTL device.
    --
    -- All of the specified VTL devices must be from the same gateway. If no
    -- VTL devices are specified, the result will contain all devices on the
    -- specified gateway.
    vTLDeviceARNs :: Prelude.Maybe [Prelude.Text],
    gatewayARN :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeVTLDevices' 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:
--
-- 'limit', 'describeVTLDevices_limit' - Specifies that the number of VTL devices described be limited to the
-- specified number.
--
-- 'marker', 'describeVTLDevices_marker' - An opaque string that indicates the position at which to begin
-- describing the VTL devices.
--
-- 'vTLDeviceARNs', 'describeVTLDevices_vTLDeviceARNs' - An array of strings, where each string represents the Amazon Resource
-- Name (ARN) of a VTL device.
--
-- All of the specified VTL devices must be from the same gateway. If no
-- VTL devices are specified, the result will contain all devices on the
-- specified gateway.
--
-- 'gatewayARN', 'describeVTLDevices_gatewayARN' - Undocumented member.
newDescribeVTLDevices ::
  -- | 'gatewayARN'
  Prelude.Text ->
  DescribeVTLDevices
newDescribeVTLDevices pGatewayARN_ =
  DescribeVTLDevices'
    { limit = Prelude.Nothing,
      marker = Prelude.Nothing,
      vTLDeviceARNs = Prelude.Nothing,
      gatewayARN = pGatewayARN_
    }

-- | Specifies that the number of VTL devices described be limited to the
-- specified number.
describeVTLDevices_limit :: Lens.Lens' DescribeVTLDevices (Prelude.Maybe Prelude.Natural)
describeVTLDevices_limit = Lens.lens (\DescribeVTLDevices' {limit} -> limit) (\s@DescribeVTLDevices' {} a -> s {limit = a} :: DescribeVTLDevices)

-- | An opaque string that indicates the position at which to begin
-- describing the VTL devices.
describeVTLDevices_marker :: Lens.Lens' DescribeVTLDevices (Prelude.Maybe Prelude.Text)
describeVTLDevices_marker = Lens.lens (\DescribeVTLDevices' {marker} -> marker) (\s@DescribeVTLDevices' {} a -> s {marker = a} :: DescribeVTLDevices)

-- | An array of strings, where each string represents the Amazon Resource
-- Name (ARN) of a VTL device.
--
-- All of the specified VTL devices must be from the same gateway. If no
-- VTL devices are specified, the result will contain all devices on the
-- specified gateway.
describeVTLDevices_vTLDeviceARNs :: Lens.Lens' DescribeVTLDevices (Prelude.Maybe [Prelude.Text])
describeVTLDevices_vTLDeviceARNs = Lens.lens (\DescribeVTLDevices' {vTLDeviceARNs} -> vTLDeviceARNs) (\s@DescribeVTLDevices' {} a -> s {vTLDeviceARNs = a} :: DescribeVTLDevices) Prelude.. Lens.mapping Lens.coerced

-- | Undocumented member.
describeVTLDevices_gatewayARN :: Lens.Lens' DescribeVTLDevices Prelude.Text
describeVTLDevices_gatewayARN = Lens.lens (\DescribeVTLDevices' {gatewayARN} -> gatewayARN) (\s@DescribeVTLDevices' {} a -> s {gatewayARN = a} :: DescribeVTLDevices)

instance Core.AWSPager DescribeVTLDevices where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeVTLDevicesResponse_marker
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeVTLDevicesResponse_vTLDevices
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeVTLDevices_marker
          Lens..~ rs
          Lens.^? describeVTLDevicesResponse_marker
          Prelude.. Lens._Just

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

instance Prelude.Hashable DescribeVTLDevices where
  hashWithSalt _salt DescribeVTLDevices' {..} =
    _salt
      `Prelude.hashWithSalt` limit
      `Prelude.hashWithSalt` marker
      `Prelude.hashWithSalt` vTLDeviceARNs
      `Prelude.hashWithSalt` gatewayARN

instance Prelude.NFData DescribeVTLDevices where
  rnf DescribeVTLDevices' {..} =
    Prelude.rnf limit
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf vTLDeviceARNs
      `Prelude.seq` Prelude.rnf gatewayARN

instance Data.ToHeaders DescribeVTLDevices where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "StorageGateway_20130630.DescribeVTLDevices" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeVTLDevices where
  toJSON DescribeVTLDevices' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("Limit" Data..=) Prelude.<$> limit,
            ("Marker" Data..=) Prelude.<$> marker,
            ("VTLDeviceARNs" Data..=) Prelude.<$> vTLDeviceARNs,
            Prelude.Just ("GatewayARN" Data..= gatewayARN)
          ]
      )

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

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

-- | DescribeVTLDevicesOutput
--
-- /See:/ 'newDescribeVTLDevicesResponse' smart constructor.
data DescribeVTLDevicesResponse = DescribeVTLDevicesResponse'
  { gatewayARN :: Prelude.Maybe Prelude.Text,
    -- | An opaque string that indicates the position at which the VTL devices
    -- that were fetched for description ended. Use the marker in your next
    -- request to fetch the next set of VTL devices in the list. If there are
    -- no more VTL devices to describe, this field does not appear in the
    -- response.
    marker :: Prelude.Maybe Prelude.Text,
    -- | An array of VTL device objects composed of the Amazon Resource Name
    -- (ARN) of the VTL devices.
    vTLDevices :: Prelude.Maybe [VTLDevice],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeVTLDevicesResponse' 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:
--
-- 'gatewayARN', 'describeVTLDevicesResponse_gatewayARN' - Undocumented member.
--
-- 'marker', 'describeVTLDevicesResponse_marker' - An opaque string that indicates the position at which the VTL devices
-- that were fetched for description ended. Use the marker in your next
-- request to fetch the next set of VTL devices in the list. If there are
-- no more VTL devices to describe, this field does not appear in the
-- response.
--
-- 'vTLDevices', 'describeVTLDevicesResponse_vTLDevices' - An array of VTL device objects composed of the Amazon Resource Name
-- (ARN) of the VTL devices.
--
-- 'httpStatus', 'describeVTLDevicesResponse_httpStatus' - The response's http status code.
newDescribeVTLDevicesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeVTLDevicesResponse
newDescribeVTLDevicesResponse pHttpStatus_ =
  DescribeVTLDevicesResponse'
    { gatewayARN =
        Prelude.Nothing,
      marker = Prelude.Nothing,
      vTLDevices = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Undocumented member.
describeVTLDevicesResponse_gatewayARN :: Lens.Lens' DescribeVTLDevicesResponse (Prelude.Maybe Prelude.Text)
describeVTLDevicesResponse_gatewayARN = Lens.lens (\DescribeVTLDevicesResponse' {gatewayARN} -> gatewayARN) (\s@DescribeVTLDevicesResponse' {} a -> s {gatewayARN = a} :: DescribeVTLDevicesResponse)

-- | An opaque string that indicates the position at which the VTL devices
-- that were fetched for description ended. Use the marker in your next
-- request to fetch the next set of VTL devices in the list. If there are
-- no more VTL devices to describe, this field does not appear in the
-- response.
describeVTLDevicesResponse_marker :: Lens.Lens' DescribeVTLDevicesResponse (Prelude.Maybe Prelude.Text)
describeVTLDevicesResponse_marker = Lens.lens (\DescribeVTLDevicesResponse' {marker} -> marker) (\s@DescribeVTLDevicesResponse' {} a -> s {marker = a} :: DescribeVTLDevicesResponse)

-- | An array of VTL device objects composed of the Amazon Resource Name
-- (ARN) of the VTL devices.
describeVTLDevicesResponse_vTLDevices :: Lens.Lens' DescribeVTLDevicesResponse (Prelude.Maybe [VTLDevice])
describeVTLDevicesResponse_vTLDevices = Lens.lens (\DescribeVTLDevicesResponse' {vTLDevices} -> vTLDevices) (\s@DescribeVTLDevicesResponse' {} a -> s {vTLDevices = a} :: DescribeVTLDevicesResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData DescribeVTLDevicesResponse where
  rnf DescribeVTLDevicesResponse' {..} =
    Prelude.rnf gatewayARN
      `Prelude.seq` Prelude.rnf marker
      `Prelude.seq` Prelude.rnf vTLDevices
      `Prelude.seq` Prelude.rnf httpStatus