{-# 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.AutoScaling.DescribeAutoScalingGroups
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Gets information about the Auto Scaling groups in the account and
-- Region.
--
-- If you specify Auto Scaling group names, the output includes information
-- for only the specified Auto Scaling groups. If you specify filters, the
-- output includes information for only those Auto Scaling groups that meet
-- the filter criteria. If you do not specify group names or filters, the
-- output includes information for all Auto Scaling groups.
--
-- This operation also returns information about instances in Auto Scaling
-- groups. To retrieve information about the instances in a warm pool, you
-- must call the DescribeWarmPool API.
--
-- This operation returns paginated results.
module Amazonka.AutoScaling.DescribeAutoScalingGroups
  ( -- * Creating a Request
    DescribeAutoScalingGroups (..),
    newDescribeAutoScalingGroups,

    -- * Request Lenses
    describeAutoScalingGroups_autoScalingGroupNames,
    describeAutoScalingGroups_filters,
    describeAutoScalingGroups_maxRecords,
    describeAutoScalingGroups_nextToken,

    -- * Destructuring the Response
    DescribeAutoScalingGroupsResponse (..),
    newDescribeAutoScalingGroupsResponse,

    -- * Response Lenses
    describeAutoScalingGroupsResponse_nextToken,
    describeAutoScalingGroupsResponse_httpStatus,
    describeAutoScalingGroupsResponse_autoScalingGroups,
  )
where

import Amazonka.AutoScaling.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:/ 'newDescribeAutoScalingGroups' smart constructor.
data DescribeAutoScalingGroups = DescribeAutoScalingGroups'
  { -- | The names of the Auto Scaling groups. By default, you can only specify
    -- up to 50 names. You can optionally increase this limit using the
    -- @MaxRecords@ property.
    --
    -- If you omit this property, all Auto Scaling groups are described.
    autoScalingGroupNames :: Prelude.Maybe [Prelude.Text],
    -- | One or more filters to limit the results based on specific tags.
    filters :: Prelude.Maybe [Filter],
    -- | The maximum number of items to return with this call. The default value
    -- is @50@ and the maximum value is @100@.
    maxRecords :: Prelude.Maybe Prelude.Int,
    -- | The token for the next set of items to return. (You received this token
    -- from a previous call.)
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeAutoScalingGroups' 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:
--
-- 'autoScalingGroupNames', 'describeAutoScalingGroups_autoScalingGroupNames' - The names of the Auto Scaling groups. By default, you can only specify
-- up to 50 names. You can optionally increase this limit using the
-- @MaxRecords@ property.
--
-- If you omit this property, all Auto Scaling groups are described.
--
-- 'filters', 'describeAutoScalingGroups_filters' - One or more filters to limit the results based on specific tags.
--
-- 'maxRecords', 'describeAutoScalingGroups_maxRecords' - The maximum number of items to return with this call. The default value
-- is @50@ and the maximum value is @100@.
--
-- 'nextToken', 'describeAutoScalingGroups_nextToken' - The token for the next set of items to return. (You received this token
-- from a previous call.)
newDescribeAutoScalingGroups ::
  DescribeAutoScalingGroups
newDescribeAutoScalingGroups =
  DescribeAutoScalingGroups'
    { autoScalingGroupNames =
        Prelude.Nothing,
      filters = Prelude.Nothing,
      maxRecords = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The names of the Auto Scaling groups. By default, you can only specify
-- up to 50 names. You can optionally increase this limit using the
-- @MaxRecords@ property.
--
-- If you omit this property, all Auto Scaling groups are described.
describeAutoScalingGroups_autoScalingGroupNames :: Lens.Lens' DescribeAutoScalingGroups (Prelude.Maybe [Prelude.Text])
describeAutoScalingGroups_autoScalingGroupNames = Lens.lens (\DescribeAutoScalingGroups' {autoScalingGroupNames} -> autoScalingGroupNames) (\s@DescribeAutoScalingGroups' {} a -> s {autoScalingGroupNames = a} :: DescribeAutoScalingGroups) Prelude.. Lens.mapping Lens.coerced

-- | One or more filters to limit the results based on specific tags.
describeAutoScalingGroups_filters :: Lens.Lens' DescribeAutoScalingGroups (Prelude.Maybe [Filter])
describeAutoScalingGroups_filters = Lens.lens (\DescribeAutoScalingGroups' {filters} -> filters) (\s@DescribeAutoScalingGroups' {} a -> s {filters = a} :: DescribeAutoScalingGroups) Prelude.. Lens.mapping Lens.coerced

-- | The maximum number of items to return with this call. The default value
-- is @50@ and the maximum value is @100@.
describeAutoScalingGroups_maxRecords :: Lens.Lens' DescribeAutoScalingGroups (Prelude.Maybe Prelude.Int)
describeAutoScalingGroups_maxRecords = Lens.lens (\DescribeAutoScalingGroups' {maxRecords} -> maxRecords) (\s@DescribeAutoScalingGroups' {} a -> s {maxRecords = a} :: DescribeAutoScalingGroups)

-- | The token for the next set of items to return. (You received this token
-- from a previous call.)
describeAutoScalingGroups_nextToken :: Lens.Lens' DescribeAutoScalingGroups (Prelude.Maybe Prelude.Text)
describeAutoScalingGroups_nextToken = Lens.lens (\DescribeAutoScalingGroups' {nextToken} -> nextToken) (\s@DescribeAutoScalingGroups' {} a -> s {nextToken = a} :: DescribeAutoScalingGroups)

instance Core.AWSPager DescribeAutoScalingGroups where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeAutoScalingGroupsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^. describeAutoScalingGroupsResponse_autoScalingGroups
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeAutoScalingGroups_nextToken
          Lens..~ rs
          Lens.^? describeAutoScalingGroupsResponse_nextToken
          Prelude.. Lens._Just

instance Core.AWSRequest DescribeAutoScalingGroups where
  type
    AWSResponse DescribeAutoScalingGroups =
      DescribeAutoScalingGroupsResponse
  request overrides =
    Request.postQuery (overrides defaultService)
  response =
    Response.receiveXMLWrapper
      "DescribeAutoScalingGroupsResult"
      ( \s h x ->
          DescribeAutoScalingGroupsResponse'
            Prelude.<$> (x Data..@? "NextToken")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
            Prelude.<*> ( x
                            Data..@? "AutoScalingGroups"
                            Core..!@ Prelude.mempty
                            Prelude.>>= Data.parseXMLList "member"
                        )
      )

instance Prelude.Hashable DescribeAutoScalingGroups where
  hashWithSalt _salt DescribeAutoScalingGroups' {..} =
    _salt
      `Prelude.hashWithSalt` autoScalingGroupNames
      `Prelude.hashWithSalt` filters
      `Prelude.hashWithSalt` maxRecords
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeAutoScalingGroups where
  rnf DescribeAutoScalingGroups' {..} =
    Prelude.rnf autoScalingGroupNames
      `Prelude.seq` Prelude.rnf filters
      `Prelude.seq` Prelude.rnf maxRecords
      `Prelude.seq` Prelude.rnf nextToken

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

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

instance Data.ToQuery DescribeAutoScalingGroups where
  toQuery DescribeAutoScalingGroups' {..} =
    Prelude.mconcat
      [ "Action"
          Data.=: ("DescribeAutoScalingGroups" :: Prelude.ByteString),
        "Version"
          Data.=: ("2011-01-01" :: Prelude.ByteString),
        "AutoScalingGroupNames"
          Data.=: Data.toQuery
            ( Data.toQueryList "member"
                Prelude.<$> autoScalingGroupNames
            ),
        "Filters"
          Data.=: Data.toQuery
            (Data.toQueryList "member" Prelude.<$> filters),
        "MaxRecords" Data.=: maxRecords,
        "NextToken" Data.=: nextToken
      ]

-- | /See:/ 'newDescribeAutoScalingGroupsResponse' smart constructor.
data DescribeAutoScalingGroupsResponse = DescribeAutoScalingGroupsResponse'
  { -- | A string that indicates that the response contains more items than can
    -- be returned in a single response. To receive additional items, specify
    -- this string for the @NextToken@ value when requesting the next set of
    -- items. This value is null when there are no more items to return.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The response's http status code.
    httpStatus :: Prelude.Int,
    -- | The groups.
    autoScalingGroups :: [AutoScalingGroup]
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeAutoScalingGroupsResponse' 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:
--
-- 'nextToken', 'describeAutoScalingGroupsResponse_nextToken' - A string that indicates that the response contains more items than can
-- be returned in a single response. To receive additional items, specify
-- this string for the @NextToken@ value when requesting the next set of
-- items. This value is null when there are no more items to return.
--
-- 'httpStatus', 'describeAutoScalingGroupsResponse_httpStatus' - The response's http status code.
--
-- 'autoScalingGroups', 'describeAutoScalingGroupsResponse_autoScalingGroups' - The groups.
newDescribeAutoScalingGroupsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeAutoScalingGroupsResponse
newDescribeAutoScalingGroupsResponse pHttpStatus_ =
  DescribeAutoScalingGroupsResponse'
    { nextToken =
        Prelude.Nothing,
      httpStatus = pHttpStatus_,
      autoScalingGroups = Prelude.mempty
    }

-- | A string that indicates that the response contains more items than can
-- be returned in a single response. To receive additional items, specify
-- this string for the @NextToken@ value when requesting the next set of
-- items. This value is null when there are no more items to return.
describeAutoScalingGroupsResponse_nextToken :: Lens.Lens' DescribeAutoScalingGroupsResponse (Prelude.Maybe Prelude.Text)
describeAutoScalingGroupsResponse_nextToken = Lens.lens (\DescribeAutoScalingGroupsResponse' {nextToken} -> nextToken) (\s@DescribeAutoScalingGroupsResponse' {} a -> s {nextToken = a} :: DescribeAutoScalingGroupsResponse)

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

-- | The groups.
describeAutoScalingGroupsResponse_autoScalingGroups :: Lens.Lens' DescribeAutoScalingGroupsResponse [AutoScalingGroup]
describeAutoScalingGroupsResponse_autoScalingGroups = Lens.lens (\DescribeAutoScalingGroupsResponse' {autoScalingGroups} -> autoScalingGroups) (\s@DescribeAutoScalingGroupsResponse' {} a -> s {autoScalingGroups = a} :: DescribeAutoScalingGroupsResponse) Prelude.. Lens.coerced

instance
  Prelude.NFData
    DescribeAutoScalingGroupsResponse
  where
  rnf DescribeAutoScalingGroupsResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus
      `Prelude.seq` Prelude.rnf autoScalingGroups