{-# 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.ListPrincipalThings
-- 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 associated with the specified principal. A principal
-- can be X.509 certificates, IAM users, groups, and roles, Amazon Cognito
-- identities or federated identities.
--
-- Requires permission to access the
-- <https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions ListPrincipalThings>
-- action.
--
-- This operation returns paginated results.
module Amazonka.IoT.ListPrincipalThings
  ( -- * Creating a Request
    ListPrincipalThings (..),
    newListPrincipalThings,

    -- * Request Lenses
    listPrincipalThings_maxResults,
    listPrincipalThings_nextToken,
    listPrincipalThings_principal,

    -- * Destructuring the Response
    ListPrincipalThingsResponse (..),
    newListPrincipalThingsResponse,

    -- * Response Lenses
    listPrincipalThingsResponse_nextToken,
    listPrincipalThingsResponse_things,
    listPrincipalThingsResponse_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

-- | The input for the ListPrincipalThings operation.
--
-- /See:/ 'newListPrincipalThings' smart constructor.
data ListPrincipalThings = ListPrincipalThings'
  { -- | The maximum number of results to return in this operation.
    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,
    -- | The principal.
    principal :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListPrincipalThings' 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', 'listPrincipalThings_maxResults' - The maximum number of results to return in this operation.
--
-- 'nextToken', 'listPrincipalThings_nextToken' - To retrieve the next set of results, the @nextToken@ value from a
-- previous response; otherwise __null__ to receive the first set of
-- results.
--
-- 'principal', 'listPrincipalThings_principal' - The principal.
newListPrincipalThings ::
  -- | 'principal'
  Prelude.Text ->
  ListPrincipalThings
newListPrincipalThings pPrincipal_ =
  ListPrincipalThings'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      principal = pPrincipal_
    }

-- | The maximum number of results to return in this operation.
listPrincipalThings_maxResults :: Lens.Lens' ListPrincipalThings (Prelude.Maybe Prelude.Natural)
listPrincipalThings_maxResults = Lens.lens (\ListPrincipalThings' {maxResults} -> maxResults) (\s@ListPrincipalThings' {} a -> s {maxResults = a} :: ListPrincipalThings)

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

-- | The principal.
listPrincipalThings_principal :: Lens.Lens' ListPrincipalThings Prelude.Text
listPrincipalThings_principal = Lens.lens (\ListPrincipalThings' {principal} -> principal) (\s@ListPrincipalThings' {} a -> s {principal = a} :: ListPrincipalThings)

instance Core.AWSPager ListPrincipalThings where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listPrincipalThingsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listPrincipalThingsResponse_things
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listPrincipalThings_nextToken
          Lens..~ rs
          Lens.^? listPrincipalThingsResponse_nextToken
          Prelude.. Lens._Just

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

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

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

instance Data.ToHeaders ListPrincipalThings where
  toHeaders ListPrincipalThings' {..} =
    Prelude.mconcat
      ["x-amzn-principal" Data.=# principal]

instance Data.ToPath ListPrincipalThings where
  toPath = Prelude.const "/principals/things"

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

-- | The output from the ListPrincipalThings operation.
--
-- /See:/ 'newListPrincipalThingsResponse' smart constructor.
data ListPrincipalThingsResponse = ListPrincipalThingsResponse'
  { -- | 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.
    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 'ListPrincipalThingsResponse' 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', 'listPrincipalThingsResponse_nextToken' - The token to use to get the next set of results, or __null__ if there
-- are no additional results.
--
-- 'things', 'listPrincipalThingsResponse_things' - The things.
--
-- 'httpStatus', 'listPrincipalThingsResponse_httpStatus' - The response's http status code.
newListPrincipalThingsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListPrincipalThingsResponse
newListPrincipalThingsResponse pHttpStatus_ =
  ListPrincipalThingsResponse'
    { 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.
listPrincipalThingsResponse_nextToken :: Lens.Lens' ListPrincipalThingsResponse (Prelude.Maybe Prelude.Text)
listPrincipalThingsResponse_nextToken = Lens.lens (\ListPrincipalThingsResponse' {nextToken} -> nextToken) (\s@ListPrincipalThingsResponse' {} a -> s {nextToken = a} :: ListPrincipalThingsResponse)

-- | The things.
listPrincipalThingsResponse_things :: Lens.Lens' ListPrincipalThingsResponse (Prelude.Maybe [Prelude.Text])
listPrincipalThingsResponse_things = Lens.lens (\ListPrincipalThingsResponse' {things} -> things) (\s@ListPrincipalThingsResponse' {} a -> s {things = a} :: ListPrincipalThingsResponse) Prelude.. Lens.mapping Lens.coerced

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

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