{-# 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.ListJobTemplates
-- 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 list of job templates.
--
-- Requires permission to access the
-- <https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions ListJobTemplates>
-- action.
--
-- This operation returns paginated results.
module Amazonka.IoT.ListJobTemplates
  ( -- * Creating a Request
    ListJobTemplates (..),
    newListJobTemplates,

    -- * Request Lenses
    listJobTemplates_maxResults,
    listJobTemplates_nextToken,

    -- * Destructuring the Response
    ListJobTemplatesResponse (..),
    newListJobTemplatesResponse,

    -- * Response Lenses
    listJobTemplatesResponse_jobTemplates,
    listJobTemplatesResponse_nextToken,
    listJobTemplatesResponse_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:/ 'newListJobTemplates' smart constructor.
data ListJobTemplates = ListJobTemplates'
  { -- | The maximum number of results to return in the list.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | The token to use to return the next set of results in the list.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListJobTemplates' 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', 'listJobTemplates_maxResults' - The maximum number of results to return in the list.
--
-- 'nextToken', 'listJobTemplates_nextToken' - The token to use to return the next set of results in the list.
newListJobTemplates ::
  ListJobTemplates
newListJobTemplates =
  ListJobTemplates'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of results to return in the list.
listJobTemplates_maxResults :: Lens.Lens' ListJobTemplates (Prelude.Maybe Prelude.Natural)
listJobTemplates_maxResults = Lens.lens (\ListJobTemplates' {maxResults} -> maxResults) (\s@ListJobTemplates' {} a -> s {maxResults = a} :: ListJobTemplates)

-- | The token to use to return the next set of results in the list.
listJobTemplates_nextToken :: Lens.Lens' ListJobTemplates (Prelude.Maybe Prelude.Text)
listJobTemplates_nextToken = Lens.lens (\ListJobTemplates' {nextToken} -> nextToken) (\s@ListJobTemplates' {} a -> s {nextToken = a} :: ListJobTemplates)

instance Core.AWSPager ListJobTemplates where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listJobTemplatesResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listJobTemplatesResponse_jobTemplates
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listJobTemplates_nextToken
          Lens..~ rs
          Lens.^? listJobTemplatesResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListJobTemplates where
  toPath = Prelude.const "/job-templates"

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

-- | /See:/ 'newListJobTemplatesResponse' smart constructor.
data ListJobTemplatesResponse = ListJobTemplatesResponse'
  { -- | A list of objects that contain information about the job templates.
    jobTemplates :: Prelude.Maybe [JobTemplateSummary],
    -- | The token for 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 'ListJobTemplatesResponse' 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:
--
-- 'jobTemplates', 'listJobTemplatesResponse_jobTemplates' - A list of objects that contain information about the job templates.
--
-- 'nextToken', 'listJobTemplatesResponse_nextToken' - The token for the next set of results, or __null__ if there are no
-- additional results.
--
-- 'httpStatus', 'listJobTemplatesResponse_httpStatus' - The response's http status code.
newListJobTemplatesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListJobTemplatesResponse
newListJobTemplatesResponse pHttpStatus_ =
  ListJobTemplatesResponse'
    { jobTemplates =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | A list of objects that contain information about the job templates.
listJobTemplatesResponse_jobTemplates :: Lens.Lens' ListJobTemplatesResponse (Prelude.Maybe [JobTemplateSummary])
listJobTemplatesResponse_jobTemplates = Lens.lens (\ListJobTemplatesResponse' {jobTemplates} -> jobTemplates) (\s@ListJobTemplatesResponse' {} a -> s {jobTemplates = a} :: ListJobTemplatesResponse) Prelude.. Lens.mapping Lens.coerced

-- | The token for the next set of results, or __null__ if there are no
-- additional results.
listJobTemplatesResponse_nextToken :: Lens.Lens' ListJobTemplatesResponse (Prelude.Maybe Prelude.Text)
listJobTemplatesResponse_nextToken = Lens.lens (\ListJobTemplatesResponse' {nextToken} -> nextToken) (\s@ListJobTemplatesResponse' {} a -> s {nextToken = a} :: ListJobTemplatesResponse)

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

instance Prelude.NFData ListJobTemplatesResponse where
  rnf ListJobTemplatesResponse' {..} =
    Prelude.rnf jobTemplates
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus