{-# 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.LookoutMetrics.DescribeAlert
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Describes an alert.
--
-- Amazon Lookout for Metrics API actions are eventually consistent. If you
-- do a read operation on a resource immediately after creating or
-- modifying it, use retries to allow time for the write operation to
-- complete.
module Amazonka.LookoutMetrics.DescribeAlert
  ( -- * Creating a Request
    DescribeAlert (..),
    newDescribeAlert,

    -- * Request Lenses
    describeAlert_alertArn,

    -- * Destructuring the Response
    DescribeAlertResponse (..),
    newDescribeAlertResponse,

    -- * Response Lenses
    describeAlertResponse_alert,
    describeAlertResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeAlert' smart constructor.
data DescribeAlert = DescribeAlert'
  { -- | The ARN of the alert to describe.
    alertArn :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeAlert' 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:
--
-- 'alertArn', 'describeAlert_alertArn' - The ARN of the alert to describe.
newDescribeAlert ::
  -- | 'alertArn'
  Prelude.Text ->
  DescribeAlert
newDescribeAlert pAlertArn_ =
  DescribeAlert' {alertArn = pAlertArn_}

-- | The ARN of the alert to describe.
describeAlert_alertArn :: Lens.Lens' DescribeAlert Prelude.Text
describeAlert_alertArn = Lens.lens (\DescribeAlert' {alertArn} -> alertArn) (\s@DescribeAlert' {} a -> s {alertArn = a} :: DescribeAlert)

instance Core.AWSRequest DescribeAlert where
  type
    AWSResponse DescribeAlert =
      DescribeAlertResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          DescribeAlertResponse'
            Prelude.<$> (x Data..?> "Alert")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable DescribeAlert where
  hashWithSalt _salt DescribeAlert' {..} =
    _salt `Prelude.hashWithSalt` alertArn

instance Prelude.NFData DescribeAlert where
  rnf DescribeAlert' {..} = Prelude.rnf alertArn

instance Data.ToHeaders DescribeAlert where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeAlert where
  toJSON DescribeAlert' {..} =
    Data.object
      ( Prelude.catMaybes
          [Prelude.Just ("AlertArn" Data..= alertArn)]
      )

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

instance Data.ToQuery DescribeAlert where
  toQuery = Prelude.const Prelude.mempty

-- | /See:/ 'newDescribeAlertResponse' smart constructor.
data DescribeAlertResponse = DescribeAlertResponse'
  { -- | Contains information about an alert.
    alert :: Prelude.Maybe Alert,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeAlertResponse' 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:
--
-- 'alert', 'describeAlertResponse_alert' - Contains information about an alert.
--
-- 'httpStatus', 'describeAlertResponse_httpStatus' - The response's http status code.
newDescribeAlertResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeAlertResponse
newDescribeAlertResponse pHttpStatus_ =
  DescribeAlertResponse'
    { alert = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Contains information about an alert.
describeAlertResponse_alert :: Lens.Lens' DescribeAlertResponse (Prelude.Maybe Alert)
describeAlertResponse_alert = Lens.lens (\DescribeAlertResponse' {alert} -> alert) (\s@DescribeAlertResponse' {} a -> s {alert = a} :: DescribeAlertResponse)

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

instance Prelude.NFData DescribeAlertResponse where
  rnf DescribeAlertResponse' {..} =
    Prelude.rnf alert
      `Prelude.seq` Prelude.rnf httpStatus