{-# 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.Lightsail.GetAlarms
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns information about the configured alarms. Specify an alarm name
-- in your request to return information about a specific alarm, or specify
-- a monitored resource name to return information about all alarms for a
-- specific resource.
--
-- An alarm is used to monitor a single metric for one of your resources.
-- When a metric condition is met, the alarm can notify you by email, SMS
-- text message, and a banner displayed on the Amazon Lightsail console.
-- For more information, see
-- <https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-alarms Alarms in Amazon Lightsail>.
module Amazonka.Lightsail.GetAlarms
  ( -- * Creating a Request
    GetAlarms (..),
    newGetAlarms,

    -- * Request Lenses
    getAlarms_alarmName,
    getAlarms_monitoredResourceName,
    getAlarms_pageToken,

    -- * Destructuring the Response
    GetAlarmsResponse (..),
    newGetAlarmsResponse,

    -- * Response Lenses
    getAlarmsResponse_alarms,
    getAlarmsResponse_nextPageToken,
    getAlarmsResponse_httpStatus,
  )
where

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

-- | /See:/ 'newGetAlarms' smart constructor.
data GetAlarms = GetAlarms'
  { -- | The name of the alarm.
    --
    -- Specify an alarm name to return information about a specific alarm.
    alarmName :: Prelude.Maybe Prelude.Text,
    -- | The name of the Lightsail resource being monitored by the alarm.
    --
    -- Specify a monitored resource name to return information about all alarms
    -- for a specific resource.
    monitoredResourceName :: Prelude.Maybe Prelude.Text,
    -- | The token to advance to the next page of results from your request.
    --
    -- To get a page token, perform an initial @GetAlarms@ request. If your
    -- results are paginated, the response will return a next page token that
    -- you can specify as the page token in a subsequent request.
    pageToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetAlarms' 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:
--
-- 'alarmName', 'getAlarms_alarmName' - The name of the alarm.
--
-- Specify an alarm name to return information about a specific alarm.
--
-- 'monitoredResourceName', 'getAlarms_monitoredResourceName' - The name of the Lightsail resource being monitored by the alarm.
--
-- Specify a monitored resource name to return information about all alarms
-- for a specific resource.
--
-- 'pageToken', 'getAlarms_pageToken' - The token to advance to the next page of results from your request.
--
-- To get a page token, perform an initial @GetAlarms@ request. If your
-- results are paginated, the response will return a next page token that
-- you can specify as the page token in a subsequent request.
newGetAlarms ::
  GetAlarms
newGetAlarms =
  GetAlarms'
    { alarmName = Prelude.Nothing,
      monitoredResourceName = Prelude.Nothing,
      pageToken = Prelude.Nothing
    }

-- | The name of the alarm.
--
-- Specify an alarm name to return information about a specific alarm.
getAlarms_alarmName :: Lens.Lens' GetAlarms (Prelude.Maybe Prelude.Text)
getAlarms_alarmName = Lens.lens (\GetAlarms' {alarmName} -> alarmName) (\s@GetAlarms' {} a -> s {alarmName = a} :: GetAlarms)

-- | The name of the Lightsail resource being monitored by the alarm.
--
-- Specify a monitored resource name to return information about all alarms
-- for a specific resource.
getAlarms_monitoredResourceName :: Lens.Lens' GetAlarms (Prelude.Maybe Prelude.Text)
getAlarms_monitoredResourceName = Lens.lens (\GetAlarms' {monitoredResourceName} -> monitoredResourceName) (\s@GetAlarms' {} a -> s {monitoredResourceName = a} :: GetAlarms)

-- | The token to advance to the next page of results from your request.
--
-- To get a page token, perform an initial @GetAlarms@ request. If your
-- results are paginated, the response will return a next page token that
-- you can specify as the page token in a subsequent request.
getAlarms_pageToken :: Lens.Lens' GetAlarms (Prelude.Maybe Prelude.Text)
getAlarms_pageToken = Lens.lens (\GetAlarms' {pageToken} -> pageToken) (\s@GetAlarms' {} a -> s {pageToken = a} :: GetAlarms)

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

instance Prelude.Hashable GetAlarms where
  hashWithSalt _salt GetAlarms' {..} =
    _salt
      `Prelude.hashWithSalt` alarmName
      `Prelude.hashWithSalt` monitoredResourceName
      `Prelude.hashWithSalt` pageToken

instance Prelude.NFData GetAlarms where
  rnf GetAlarms' {..} =
    Prelude.rnf alarmName
      `Prelude.seq` Prelude.rnf monitoredResourceName
      `Prelude.seq` Prelude.rnf pageToken

instance Data.ToHeaders GetAlarms where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "Lightsail_20161128.GetAlarms" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON GetAlarms where
  toJSON GetAlarms' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("alarmName" Data..=) Prelude.<$> alarmName,
            ("monitoredResourceName" Data..=)
              Prelude.<$> monitoredResourceName,
            ("pageToken" Data..=) Prelude.<$> pageToken
          ]
      )

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

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

-- | /See:/ 'newGetAlarmsResponse' smart constructor.
data GetAlarmsResponse = GetAlarmsResponse'
  { -- | An array of objects that describe the alarms.
    alarms :: Prelude.Maybe [Alarm],
    -- | The token to advance to the next page of results from your request.
    --
    -- A next page token is not returned if there are no more results to
    -- display.
    --
    -- To get the next page of results, perform another @GetAlarms@ request and
    -- specify the next page token using the @pageToken@ parameter.
    nextPageToken :: 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 'GetAlarmsResponse' 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:
--
-- 'alarms', 'getAlarmsResponse_alarms' - An array of objects that describe the alarms.
--
-- 'nextPageToken', 'getAlarmsResponse_nextPageToken' - The token to advance to the next page of results from your request.
--
-- A next page token is not returned if there are no more results to
-- display.
--
-- To get the next page of results, perform another @GetAlarms@ request and
-- specify the next page token using the @pageToken@ parameter.
--
-- 'httpStatus', 'getAlarmsResponse_httpStatus' - The response's http status code.
newGetAlarmsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetAlarmsResponse
newGetAlarmsResponse pHttpStatus_ =
  GetAlarmsResponse'
    { alarms = Prelude.Nothing,
      nextPageToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | An array of objects that describe the alarms.
getAlarmsResponse_alarms :: Lens.Lens' GetAlarmsResponse (Prelude.Maybe [Alarm])
getAlarmsResponse_alarms = Lens.lens (\GetAlarmsResponse' {alarms} -> alarms) (\s@GetAlarmsResponse' {} a -> s {alarms = a} :: GetAlarmsResponse) Prelude.. Lens.mapping Lens.coerced

-- | The token to advance to the next page of results from your request.
--
-- A next page token is not returned if there are no more results to
-- display.
--
-- To get the next page of results, perform another @GetAlarms@ request and
-- specify the next page token using the @pageToken@ parameter.
getAlarmsResponse_nextPageToken :: Lens.Lens' GetAlarmsResponse (Prelude.Maybe Prelude.Text)
getAlarmsResponse_nextPageToken = Lens.lens (\GetAlarmsResponse' {nextPageToken} -> nextPageToken) (\s@GetAlarmsResponse' {} a -> s {nextPageToken = a} :: GetAlarmsResponse)

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

instance Prelude.NFData GetAlarmsResponse where
  rnf GetAlarmsResponse' {..} =
    Prelude.rnf alarms
      `Prelude.seq` Prelude.rnf nextPageToken
      `Prelude.seq` Prelude.rnf httpStatus