{-# 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.IoTEventsData.DescribeAlarm
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Retrieves information about an alarm.
module Amazonka.IoTEventsData.DescribeAlarm
  ( -- * Creating a Request
    DescribeAlarm (..),
    newDescribeAlarm,

    -- * Request Lenses
    describeAlarm_keyValue,
    describeAlarm_alarmModelName,

    -- * Destructuring the Response
    DescribeAlarmResponse (..),
    newDescribeAlarmResponse,

    -- * Response Lenses
    describeAlarmResponse_alarm,
    describeAlarmResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeAlarm' smart constructor.
data DescribeAlarm = DescribeAlarm'
  { -- | The value of the key used as a filter to select only the alarms
    -- associated with the
    -- <https://docs.aws.amazon.com/iotevents/latest/apireference/API_CreateAlarmModel.html#iotevents-CreateAlarmModel-request-key key>.
    keyValue :: Prelude.Maybe Prelude.Text,
    -- | The name of the alarm model.
    alarmModelName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeAlarm' 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:
--
-- 'keyValue', 'describeAlarm_keyValue' - The value of the key used as a filter to select only the alarms
-- associated with the
-- <https://docs.aws.amazon.com/iotevents/latest/apireference/API_CreateAlarmModel.html#iotevents-CreateAlarmModel-request-key key>.
--
-- 'alarmModelName', 'describeAlarm_alarmModelName' - The name of the alarm model.
newDescribeAlarm ::
  -- | 'alarmModelName'
  Prelude.Text ->
  DescribeAlarm
newDescribeAlarm pAlarmModelName_ =
  DescribeAlarm'
    { keyValue = Prelude.Nothing,
      alarmModelName = pAlarmModelName_
    }

-- | The value of the key used as a filter to select only the alarms
-- associated with the
-- <https://docs.aws.amazon.com/iotevents/latest/apireference/API_CreateAlarmModel.html#iotevents-CreateAlarmModel-request-key key>.
describeAlarm_keyValue :: Lens.Lens' DescribeAlarm (Prelude.Maybe Prelude.Text)
describeAlarm_keyValue = Lens.lens (\DescribeAlarm' {keyValue} -> keyValue) (\s@DescribeAlarm' {} a -> s {keyValue = a} :: DescribeAlarm)

-- | The name of the alarm model.
describeAlarm_alarmModelName :: Lens.Lens' DescribeAlarm Prelude.Text
describeAlarm_alarmModelName = Lens.lens (\DescribeAlarm' {alarmModelName} -> alarmModelName) (\s@DescribeAlarm' {} a -> s {alarmModelName = a} :: DescribeAlarm)

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

instance Prelude.Hashable DescribeAlarm where
  hashWithSalt _salt DescribeAlarm' {..} =
    _salt
      `Prelude.hashWithSalt` keyValue
      `Prelude.hashWithSalt` alarmModelName

instance Prelude.NFData DescribeAlarm where
  rnf DescribeAlarm' {..} =
    Prelude.rnf keyValue
      `Prelude.seq` Prelude.rnf alarmModelName

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

instance Data.ToPath DescribeAlarm where
  toPath DescribeAlarm' {..} =
    Prelude.mconcat
      ["/alarms/", Data.toBS alarmModelName, "/keyValues/"]

instance Data.ToQuery DescribeAlarm where
  toQuery DescribeAlarm' {..} =
    Prelude.mconcat ["keyValue" Data.=: keyValue]

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

-- |
-- Create a value of 'DescribeAlarmResponse' 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:
--
-- 'alarm', 'describeAlarmResponse_alarm' - Contains information about an alarm.
--
-- 'httpStatus', 'describeAlarmResponse_httpStatus' - The response's http status code.
newDescribeAlarmResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeAlarmResponse
newDescribeAlarmResponse pHttpStatus_ =
  DescribeAlarmResponse'
    { alarm = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Contains information about an alarm.
describeAlarmResponse_alarm :: Lens.Lens' DescribeAlarmResponse (Prelude.Maybe Alarm)
describeAlarmResponse_alarm = Lens.lens (\DescribeAlarmResponse' {alarm} -> alarm) (\s@DescribeAlarmResponse' {} a -> s {alarm = a} :: DescribeAlarmResponse)

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

instance Prelude.NFData DescribeAlarmResponse where
  rnf DescribeAlarmResponse' {..} =
    Prelude.rnf alarm
      `Prelude.seq` Prelude.rnf httpStatus