{-# 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.ListThingsInThingGroup
-- 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 the things in the specified group.
--
-- Requires permission to access the
-- <https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions ListThingsInThingGroup>
-- action.
--
-- This operation returns paginated results.
module Amazonka.IoT.ListThingsInThingGroup
  ( -- * Creating a Request
    ListThingsInThingGroup (..),
    newListThingsInThingGroup,

    -- * Request Lenses
    listThingsInThingGroup_maxResults,
    listThingsInThingGroup_nextToken,
    listThingsInThingGroup_recursive,
    listThingsInThingGroup_thingGroupName,

    -- * Destructuring the Response
    ListThingsInThingGroupResponse (..),
    newListThingsInThingGroupResponse,

    -- * Response Lenses
    listThingsInThingGroupResponse_nextToken,
    listThingsInThingGroupResponse_things,
    listThingsInThingGroupResponse_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:/ 'newListThingsInThingGroup' smart constructor.
data ListThingsInThingGroup = ListThingsInThingGroup'
  { -- | The maximum number of results to return at one time.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | To retrieve the next set of results, the @nextToken@ value from a
    -- previous response; otherwise __null__ to receive the first set of
    -- results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | When true, list things in this thing group and in all child groups as
    -- well.
    recursive :: Prelude.Maybe Prelude.Bool,
    -- | The thing group name.
    thingGroupName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListThingsInThingGroup' 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', 'listThingsInThingGroup_maxResults' - The maximum number of results to return at one time.
--
-- 'nextToken', 'listThingsInThingGroup_nextToken' - To retrieve the next set of results, the @nextToken@ value from a
-- previous response; otherwise __null__ to receive the first set of
-- results.
--
-- 'recursive', 'listThingsInThingGroup_recursive' - When true, list things in this thing group and in all child groups as
-- well.
--
-- 'thingGroupName', 'listThingsInThingGroup_thingGroupName' - The thing group name.
newListThingsInThingGroup ::
  -- | 'thingGroupName'
  Prelude.Text ->
  ListThingsInThingGroup
newListThingsInThingGroup pThingGroupName_ =
  ListThingsInThingGroup'
    { maxResults =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      recursive = Prelude.Nothing,
      thingGroupName = pThingGroupName_
    }

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

-- | To retrieve the next set of results, the @nextToken@ value from a
-- previous response; otherwise __null__ to receive the first set of
-- results.
listThingsInThingGroup_nextToken :: Lens.Lens' ListThingsInThingGroup (Prelude.Maybe Prelude.Text)
listThingsInThingGroup_nextToken = Lens.lens (\ListThingsInThingGroup' {nextToken} -> nextToken) (\s@ListThingsInThingGroup' {} a -> s {nextToken = a} :: ListThingsInThingGroup)

-- | When true, list things in this thing group and in all child groups as
-- well.
listThingsInThingGroup_recursive :: Lens.Lens' ListThingsInThingGroup (Prelude.Maybe Prelude.Bool)
listThingsInThingGroup_recursive = Lens.lens (\ListThingsInThingGroup' {recursive} -> recursive) (\s@ListThingsInThingGroup' {} a -> s {recursive = a} :: ListThingsInThingGroup)

-- | The thing group name.
listThingsInThingGroup_thingGroupName :: Lens.Lens' ListThingsInThingGroup Prelude.Text
listThingsInThingGroup_thingGroupName = Lens.lens (\ListThingsInThingGroup' {thingGroupName} -> thingGroupName) (\s@ListThingsInThingGroup' {} a -> s {thingGroupName = a} :: ListThingsInThingGroup)

instance Core.AWSPager ListThingsInThingGroup where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listThingsInThingGroupResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listThingsInThingGroupResponse_things
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listThingsInThingGroup_nextToken
          Lens..~ rs
          Lens.^? listThingsInThingGroupResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable ListThingsInThingGroup where
  hashWithSalt _salt ListThingsInThingGroup' {..} =
    _salt
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken
      `Prelude.hashWithSalt` recursive
      `Prelude.hashWithSalt` thingGroupName

instance Prelude.NFData ListThingsInThingGroup where
  rnf ListThingsInThingGroup' {..} =
    Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf recursive
      `Prelude.seq` Prelude.rnf thingGroupName

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

instance Data.ToPath ListThingsInThingGroup where
  toPath ListThingsInThingGroup' {..} =
    Prelude.mconcat
      [ "/thing-groups/",
        Data.toBS thingGroupName,
        "/things"
      ]

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

-- | /See:/ 'newListThingsInThingGroupResponse' smart constructor.
data ListThingsInThingGroupResponse = ListThingsInThingGroupResponse'
  { -- | The token to use to get the next set of results, or __null__ if there
    -- are no additional results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The things in the specified thing group.
    things :: 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 'ListThingsInThingGroupResponse' 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:
--
-- 'nextToken', 'listThingsInThingGroupResponse_nextToken' - The token to use to get the next set of results, or __null__ if there
-- are no additional results.
--
-- 'things', 'listThingsInThingGroupResponse_things' - The things in the specified thing group.
--
-- 'httpStatus', 'listThingsInThingGroupResponse_httpStatus' - The response's http status code.
newListThingsInThingGroupResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListThingsInThingGroupResponse
newListThingsInThingGroupResponse pHttpStatus_ =
  ListThingsInThingGroupResponse'
    { nextToken =
        Prelude.Nothing,
      things = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

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

-- | The things in the specified thing group.
listThingsInThingGroupResponse_things :: Lens.Lens' ListThingsInThingGroupResponse (Prelude.Maybe [Prelude.Text])
listThingsInThingGroupResponse_things = Lens.lens (\ListThingsInThingGroupResponse' {things} -> things) (\s@ListThingsInThingGroupResponse' {} a -> s {things = a} :: ListThingsInThingGroupResponse) Prelude.. Lens.mapping Lens.coerced

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

instance
  Prelude.NFData
    ListThingsInThingGroupResponse
  where
  rnf ListThingsInThingGroupResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf things
      `Prelude.seq` Prelude.rnf httpStatus