{-# 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.CloudWatch.ListTagsForResource
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Displays the tags associated with a CloudWatch resource. Currently,
-- alarms and Contributor Insights rules support tagging.
module Amazonka.CloudWatch.ListTagsForResource
  ( -- * Creating a Request
    ListTagsForResource (..),
    newListTagsForResource,

    -- * Request Lenses
    listTagsForResource_resourceARN,

    -- * Destructuring the Response
    ListTagsForResourceResponse (..),
    newListTagsForResourceResponse,

    -- * Response Lenses
    listTagsForResourceResponse_tags,
    listTagsForResourceResponse_httpStatus,
  )
where

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

-- | /See:/ 'newListTagsForResource' smart constructor.
data ListTagsForResource = ListTagsForResource'
  { -- | The ARN of the CloudWatch resource that you want to view tags for.
    --
    -- The ARN format of an alarm is
    -- @arn:aws:cloudwatch:@/@Region@/@:@/@account-id@/@:alarm:@/@alarm-name@/@ @
    --
    -- The ARN format of a Contributor Insights rule is
    -- @arn:aws:cloudwatch:@/@Region@/@:@/@account-id@/@:insight-rule:@/@insight-rule-name@/@ @
    --
    -- For more information about ARN format, see
    -- <https://docs.aws.amazon.com/IAM/latest/UserGuide/list_amazoncloudwatch.html#amazoncloudwatch-resources-for-iam-policies Resource Types Defined by Amazon CloudWatch>
    -- in the /Amazon Web Services General Reference/.
    resourceARN :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListTagsForResource' 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:
--
-- 'resourceARN', 'listTagsForResource_resourceARN' - The ARN of the CloudWatch resource that you want to view tags for.
--
-- The ARN format of an alarm is
-- @arn:aws:cloudwatch:@/@Region@/@:@/@account-id@/@:alarm:@/@alarm-name@/@ @
--
-- The ARN format of a Contributor Insights rule is
-- @arn:aws:cloudwatch:@/@Region@/@:@/@account-id@/@:insight-rule:@/@insight-rule-name@/@ @
--
-- For more information about ARN format, see
-- <https://docs.aws.amazon.com/IAM/latest/UserGuide/list_amazoncloudwatch.html#amazoncloudwatch-resources-for-iam-policies Resource Types Defined by Amazon CloudWatch>
-- in the /Amazon Web Services General Reference/.
newListTagsForResource ::
  -- | 'resourceARN'
  Prelude.Text ->
  ListTagsForResource
newListTagsForResource pResourceARN_ =
  ListTagsForResource' {resourceARN = pResourceARN_}

-- | The ARN of the CloudWatch resource that you want to view tags for.
--
-- The ARN format of an alarm is
-- @arn:aws:cloudwatch:@/@Region@/@:@/@account-id@/@:alarm:@/@alarm-name@/@ @
--
-- The ARN format of a Contributor Insights rule is
-- @arn:aws:cloudwatch:@/@Region@/@:@/@account-id@/@:insight-rule:@/@insight-rule-name@/@ @
--
-- For more information about ARN format, see
-- <https://docs.aws.amazon.com/IAM/latest/UserGuide/list_amazoncloudwatch.html#amazoncloudwatch-resources-for-iam-policies Resource Types Defined by Amazon CloudWatch>
-- in the /Amazon Web Services General Reference/.
listTagsForResource_resourceARN :: Lens.Lens' ListTagsForResource Prelude.Text
listTagsForResource_resourceARN = Lens.lens (\ListTagsForResource' {resourceARN} -> resourceARN) (\s@ListTagsForResource' {} a -> s {resourceARN = a} :: ListTagsForResource)

instance Core.AWSRequest ListTagsForResource where
  type
    AWSResponse ListTagsForResource =
      ListTagsForResourceResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXMLWrapper
      "ListTagsForResourceResult"
      ( \s h x ->
          ListTagsForResourceResponse'
            Prelude.<$> ( x
                            Data..@? "Tags"
                            Core..!@ Prelude.mempty
                            Prelude.>>= Core.may (Data.parseXMLList "member")
                        )
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable ListTagsForResource where
  hashWithSalt _salt ListTagsForResource' {..} =
    _salt `Prelude.hashWithSalt` resourceARN

instance Prelude.NFData ListTagsForResource where
  rnf ListTagsForResource' {..} =
    Prelude.rnf resourceARN

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

instance Data.ToPath ListTagsForResource where
  toPath = Prelude.const "/"

instance Data.ToQuery ListTagsForResource where
  toQuery ListTagsForResource' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("ListTagsForResource" :: Prelude.ByteString),
        "Version"
          Data.=: ("2010-08-01" :: Prelude.ByteString),
        "ResourceARN" Data.=: resourceARN
      ]

-- | /See:/ 'newListTagsForResourceResponse' smart constructor.
data ListTagsForResourceResponse = ListTagsForResourceResponse'
  { -- | The list of tag keys and values associated with the resource you
    -- specified.
    tags :: Prelude.Maybe [Tag],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListTagsForResourceResponse' 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:
--
-- 'tags', 'listTagsForResourceResponse_tags' - The list of tag keys and values associated with the resource you
-- specified.
--
-- 'httpStatus', 'listTagsForResourceResponse_httpStatus' - The response's http status code.
newListTagsForResourceResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListTagsForResourceResponse
newListTagsForResourceResponse pHttpStatus_ =
  ListTagsForResourceResponse'
    { tags =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The list of tag keys and values associated with the resource you
-- specified.
listTagsForResourceResponse_tags :: Lens.Lens' ListTagsForResourceResponse (Prelude.Maybe [Tag])
listTagsForResourceResponse_tags = Lens.lens (\ListTagsForResourceResponse' {tags} -> tags) (\s@ListTagsForResourceResponse' {} a -> s {tags = a} :: ListTagsForResourceResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData ListTagsForResourceResponse where
  rnf ListTagsForResourceResponse' {..} =
    Prelude.rnf tags
      `Prelude.seq` Prelude.rnf httpStatus