{-# 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.IoT.ListCustomMetrics
-- 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 your Device Defender detect custom metrics.
--
-- Requires permission to access the
-- <https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions ListCustomMetrics>
-- action.
--
-- This operation returns paginated results.
module Amazonka.IoT.ListCustomMetrics
  ( -- * Creating a Request
    ListCustomMetrics (..),
    newListCustomMetrics,

    -- * Request Lenses
    listCustomMetrics_maxResults,
    listCustomMetrics_nextToken,

    -- * Destructuring the Response
    ListCustomMetricsResponse (..),
    newListCustomMetricsResponse,

    -- * Response Lenses
    listCustomMetricsResponse_metricNames,
    listCustomMetricsResponse_nextToken,
    listCustomMetricsResponse_httpStatus,
  )
where

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

-- | /See:/ 'newListCustomMetrics' smart constructor.
data ListCustomMetrics = ListCustomMetrics'
  { -- | The maximum number of results to return at one time. The default is 25.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | The token for the next set of results.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListCustomMetrics' 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', 'listCustomMetrics_maxResults' - The maximum number of results to return at one time. The default is 25.
--
-- 'nextToken', 'listCustomMetrics_nextToken' - The token for the next set of results.
newListCustomMetrics ::
  ListCustomMetrics
newListCustomMetrics =
  ListCustomMetrics'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of results to return at one time. The default is 25.
listCustomMetrics_maxResults :: Lens.Lens' ListCustomMetrics (Prelude.Maybe Prelude.Natural)
listCustomMetrics_maxResults = Lens.lens (\ListCustomMetrics' {maxResults} -> maxResults) (\s@ListCustomMetrics' {} a -> s {maxResults = a} :: ListCustomMetrics)

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

instance Core.AWSPager ListCustomMetrics where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listCustomMetricsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listCustomMetricsResponse_metricNames
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listCustomMetrics_nextToken
          Lens..~ rs
          Lens.^? listCustomMetricsResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListCustomMetrics where
  toPath = Prelude.const "/custom-metrics"

instance Data.ToQuery ListCustomMetrics where
  toQuery ListCustomMetrics' {..} =
    Prelude.mconcat
      [ "maxResults" Data.=: maxResults,
        "nextToken" Data.=: nextToken
      ]

-- | /See:/ 'newListCustomMetricsResponse' smart constructor.
data ListCustomMetricsResponse = ListCustomMetricsResponse'
  { -- | The name of the custom metric.
    metricNames :: Prelude.Maybe [Prelude.Text],
    -- | A token that can be used to retrieve the next set of results, or @null@
    -- if there are no additional results.
    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 'ListCustomMetricsResponse' 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:
--
-- 'metricNames', 'listCustomMetricsResponse_metricNames' - The name of the custom metric.
--
-- 'nextToken', 'listCustomMetricsResponse_nextToken' - A token that can be used to retrieve the next set of results, or @null@
-- if there are no additional results.
--
-- 'httpStatus', 'listCustomMetricsResponse_httpStatus' - The response's http status code.
newListCustomMetricsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListCustomMetricsResponse
newListCustomMetricsResponse pHttpStatus_ =
  ListCustomMetricsResponse'
    { metricNames =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The name of the custom metric.
listCustomMetricsResponse_metricNames :: Lens.Lens' ListCustomMetricsResponse (Prelude.Maybe [Prelude.Text])
listCustomMetricsResponse_metricNames = Lens.lens (\ListCustomMetricsResponse' {metricNames} -> metricNames) (\s@ListCustomMetricsResponse' {} a -> s {metricNames = a} :: ListCustomMetricsResponse) Prelude.. Lens.mapping Lens.coerced

-- | A token that can be used to retrieve the next set of results, or @null@
-- if there are no additional results.
listCustomMetricsResponse_nextToken :: Lens.Lens' ListCustomMetricsResponse (Prelude.Maybe Prelude.Text)
listCustomMetricsResponse_nextToken = Lens.lens (\ListCustomMetricsResponse' {nextToken} -> nextToken) (\s@ListCustomMetricsResponse' {} a -> s {nextToken = a} :: ListCustomMetricsResponse)

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

instance Prelude.NFData ListCustomMetricsResponse where
  rnf ListCustomMetricsResponse' {..} =
    Prelude.rnf metricNames
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus