{-# 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.ListTargetsForPolicy
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- List targets for the specified policy.
--
-- Requires permission to access the
-- <https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions ListTargetsForPolicy>
-- action.
--
-- This operation returns paginated results.
module Amazonka.IoT.ListTargetsForPolicy
  ( -- * Creating a Request
    ListTargetsForPolicy (..),
    newListTargetsForPolicy,

    -- * Request Lenses
    listTargetsForPolicy_marker,
    listTargetsForPolicy_pageSize,
    listTargetsForPolicy_policyName,

    -- * Destructuring the Response
    ListTargetsForPolicyResponse (..),
    newListTargetsForPolicyResponse,

    -- * Response Lenses
    listTargetsForPolicyResponse_nextMarker,
    listTargetsForPolicyResponse_targets,
    listTargetsForPolicyResponse_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:/ 'newListTargetsForPolicy' smart constructor.
data ListTargetsForPolicy = ListTargetsForPolicy'
  { -- | A marker used to get the next set of results.
    marker :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of results to return at one time.
    pageSize :: Prelude.Maybe Prelude.Natural,
    -- | The policy name.
    policyName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListTargetsForPolicy' 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:
--
-- 'marker', 'listTargetsForPolicy_marker' - A marker used to get the next set of results.
--
-- 'pageSize', 'listTargetsForPolicy_pageSize' - The maximum number of results to return at one time.
--
-- 'policyName', 'listTargetsForPolicy_policyName' - The policy name.
newListTargetsForPolicy ::
  -- | 'policyName'
  Prelude.Text ->
  ListTargetsForPolicy
newListTargetsForPolicy pPolicyName_ =
  ListTargetsForPolicy'
    { marker = Prelude.Nothing,
      pageSize = Prelude.Nothing,
      policyName = pPolicyName_
    }

-- | A marker used to get the next set of results.
listTargetsForPolicy_marker :: Lens.Lens' ListTargetsForPolicy (Prelude.Maybe Prelude.Text)
listTargetsForPolicy_marker = Lens.lens (\ListTargetsForPolicy' {marker} -> marker) (\s@ListTargetsForPolicy' {} a -> s {marker = a} :: ListTargetsForPolicy)

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

-- | The policy name.
listTargetsForPolicy_policyName :: Lens.Lens' ListTargetsForPolicy Prelude.Text
listTargetsForPolicy_policyName = Lens.lens (\ListTargetsForPolicy' {policyName} -> policyName) (\s@ListTargetsForPolicy' {} a -> s {policyName = a} :: ListTargetsForPolicy)

instance Core.AWSPager ListTargetsForPolicy where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listTargetsForPolicyResponse_nextMarker
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listTargetsForPolicyResponse_targets
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listTargetsForPolicy_marker
          Lens..~ rs
          Lens.^? listTargetsForPolicyResponse_nextMarker
          Prelude.. Lens._Just

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

instance Prelude.Hashable ListTargetsForPolicy where
  hashWithSalt _salt ListTargetsForPolicy' {..} =
    _salt
      `Prelude.hashWithSalt` marker
      `Prelude.hashWithSalt` pageSize
      `Prelude.hashWithSalt` policyName

instance Prelude.NFData ListTargetsForPolicy where
  rnf ListTargetsForPolicy' {..} =
    Prelude.rnf marker
      `Prelude.seq` Prelude.rnf pageSize
      `Prelude.seq` Prelude.rnf policyName

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

instance Data.ToJSON ListTargetsForPolicy where
  toJSON = Prelude.const (Data.Object Prelude.mempty)

instance Data.ToPath ListTargetsForPolicy where
  toPath ListTargetsForPolicy' {..} =
    Prelude.mconcat
      ["/policy-targets/", Data.toBS policyName]

instance Data.ToQuery ListTargetsForPolicy where
  toQuery ListTargetsForPolicy' {..} =
    Prelude.mconcat
      [ "marker" Data.=: marker,
        "pageSize" Data.=: pageSize
      ]

-- | /See:/ 'newListTargetsForPolicyResponse' smart constructor.
data ListTargetsForPolicyResponse = ListTargetsForPolicyResponse'
  { -- | A marker used to get the next set of results.
    nextMarker :: Prelude.Maybe Prelude.Text,
    -- | The policy targets.
    targets :: 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 'ListTargetsForPolicyResponse' 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:
--
-- 'nextMarker', 'listTargetsForPolicyResponse_nextMarker' - A marker used to get the next set of results.
--
-- 'targets', 'listTargetsForPolicyResponse_targets' - The policy targets.
--
-- 'httpStatus', 'listTargetsForPolicyResponse_httpStatus' - The response's http status code.
newListTargetsForPolicyResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListTargetsForPolicyResponse
newListTargetsForPolicyResponse pHttpStatus_ =
  ListTargetsForPolicyResponse'
    { nextMarker =
        Prelude.Nothing,
      targets = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | A marker used to get the next set of results.
listTargetsForPolicyResponse_nextMarker :: Lens.Lens' ListTargetsForPolicyResponse (Prelude.Maybe Prelude.Text)
listTargetsForPolicyResponse_nextMarker = Lens.lens (\ListTargetsForPolicyResponse' {nextMarker} -> nextMarker) (\s@ListTargetsForPolicyResponse' {} a -> s {nextMarker = a} :: ListTargetsForPolicyResponse)

-- | The policy targets.
listTargetsForPolicyResponse_targets :: Lens.Lens' ListTargetsForPolicyResponse (Prelude.Maybe [Prelude.Text])
listTargetsForPolicyResponse_targets = Lens.lens (\ListTargetsForPolicyResponse' {targets} -> targets) (\s@ListTargetsForPolicyResponse' {} a -> s {targets = a} :: ListTargetsForPolicyResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData ListTargetsForPolicyResponse where
  rnf ListTargetsForPolicyResponse' {..} =
    Prelude.rnf nextMarker
      `Prelude.seq` Prelude.rnf targets
      `Prelude.seq` Prelude.rnf httpStatus