{-# 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.Batch.DescribeComputeEnvironments
-- 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 one or more of your compute environments.
--
-- If you\'re using an unmanaged compute environment, you can use the
-- @DescribeComputeEnvironment@ operation to determine the @ecsClusterArn@
-- that you launch your Amazon ECS container instances into.
--
-- This operation returns paginated results.
module Amazonka.Batch.DescribeComputeEnvironments
  ( -- * Creating a Request
    DescribeComputeEnvironments (..),
    newDescribeComputeEnvironments,

    -- * Request Lenses
    describeComputeEnvironments_computeEnvironments,
    describeComputeEnvironments_maxResults,
    describeComputeEnvironments_nextToken,

    -- * Destructuring the Response
    DescribeComputeEnvironmentsResponse (..),
    newDescribeComputeEnvironmentsResponse,

    -- * Response Lenses
    describeComputeEnvironmentsResponse_computeEnvironments,
    describeComputeEnvironmentsResponse_nextToken,
    describeComputeEnvironmentsResponse_httpStatus,
  )
where

import Amazonka.Batch.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

-- | Contains the parameters for @DescribeComputeEnvironments@.
--
-- /See:/ 'newDescribeComputeEnvironments' smart constructor.
data DescribeComputeEnvironments = DescribeComputeEnvironments'
  { -- | A list of up to 100 compute environment names or full Amazon Resource
    -- Name (ARN) entries.
    computeEnvironments :: Prelude.Maybe [Prelude.Text],
    -- | The maximum number of cluster results returned by
    -- @DescribeComputeEnvironments@ in paginated output. When this parameter
    -- is used, @DescribeComputeEnvironments@ only returns @maxResults@ results
    -- in a single page along with a @nextToken@ response element. The
    -- remaining results of the initial request can be seen by sending another
    -- @DescribeComputeEnvironments@ request with the returned @nextToken@
    -- value. This value can be between 1 and 100. If this parameter isn\'t
    -- used, then @DescribeComputeEnvironments@ returns up to 100 results and a
    -- @nextToken@ value if applicable.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | The @nextToken@ value returned from a previous paginated
    -- @DescribeComputeEnvironments@ request where @maxResults@ was used and
    -- the results exceeded the value of that parameter. Pagination continues
    -- from the end of the previous results that returned the @nextToken@
    -- value. This value is @null@ when there are no more results to return.
    --
    -- Treat this token as an opaque identifier that\'s only used to retrieve
    -- the next items in a list and not for other programmatic purposes.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeComputeEnvironments' 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:
--
-- 'computeEnvironments', 'describeComputeEnvironments_computeEnvironments' - A list of up to 100 compute environment names or full Amazon Resource
-- Name (ARN) entries.
--
-- 'maxResults', 'describeComputeEnvironments_maxResults' - The maximum number of cluster results returned by
-- @DescribeComputeEnvironments@ in paginated output. When this parameter
-- is used, @DescribeComputeEnvironments@ only returns @maxResults@ results
-- in a single page along with a @nextToken@ response element. The
-- remaining results of the initial request can be seen by sending another
-- @DescribeComputeEnvironments@ request with the returned @nextToken@
-- value. This value can be between 1 and 100. If this parameter isn\'t
-- used, then @DescribeComputeEnvironments@ returns up to 100 results and a
-- @nextToken@ value if applicable.
--
-- 'nextToken', 'describeComputeEnvironments_nextToken' - The @nextToken@ value returned from a previous paginated
-- @DescribeComputeEnvironments@ request where @maxResults@ was used and
-- the results exceeded the value of that parameter. Pagination continues
-- from the end of the previous results that returned the @nextToken@
-- value. This value is @null@ when there are no more results to return.
--
-- Treat this token as an opaque identifier that\'s only used to retrieve
-- the next items in a list and not for other programmatic purposes.
newDescribeComputeEnvironments ::
  DescribeComputeEnvironments
newDescribeComputeEnvironments =
  DescribeComputeEnvironments'
    { computeEnvironments =
        Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | A list of up to 100 compute environment names or full Amazon Resource
-- Name (ARN) entries.
describeComputeEnvironments_computeEnvironments :: Lens.Lens' DescribeComputeEnvironments (Prelude.Maybe [Prelude.Text])
describeComputeEnvironments_computeEnvironments = Lens.lens (\DescribeComputeEnvironments' {computeEnvironments} -> computeEnvironments) (\s@DescribeComputeEnvironments' {} a -> s {computeEnvironments = a} :: DescribeComputeEnvironments) Prelude.. Lens.mapping Lens.coerced

-- | The maximum number of cluster results returned by
-- @DescribeComputeEnvironments@ in paginated output. When this parameter
-- is used, @DescribeComputeEnvironments@ only returns @maxResults@ results
-- in a single page along with a @nextToken@ response element. The
-- remaining results of the initial request can be seen by sending another
-- @DescribeComputeEnvironments@ request with the returned @nextToken@
-- value. This value can be between 1 and 100. If this parameter isn\'t
-- used, then @DescribeComputeEnvironments@ returns up to 100 results and a
-- @nextToken@ value if applicable.
describeComputeEnvironments_maxResults :: Lens.Lens' DescribeComputeEnvironments (Prelude.Maybe Prelude.Int)
describeComputeEnvironments_maxResults = Lens.lens (\DescribeComputeEnvironments' {maxResults} -> maxResults) (\s@DescribeComputeEnvironments' {} a -> s {maxResults = a} :: DescribeComputeEnvironments)

-- | The @nextToken@ value returned from a previous paginated
-- @DescribeComputeEnvironments@ request where @maxResults@ was used and
-- the results exceeded the value of that parameter. Pagination continues
-- from the end of the previous results that returned the @nextToken@
-- value. This value is @null@ when there are no more results to return.
--
-- Treat this token as an opaque identifier that\'s only used to retrieve
-- the next items in a list and not for other programmatic purposes.
describeComputeEnvironments_nextToken :: Lens.Lens' DescribeComputeEnvironments (Prelude.Maybe Prelude.Text)
describeComputeEnvironments_nextToken = Lens.lens (\DescribeComputeEnvironments' {nextToken} -> nextToken) (\s@DescribeComputeEnvironments' {} a -> s {nextToken = a} :: DescribeComputeEnvironments)

instance Core.AWSPager DescribeComputeEnvironments where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeComputeEnvironmentsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeComputeEnvironmentsResponse_computeEnvironments
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeComputeEnvironments_nextToken
          Lens..~ rs
          Lens.^? describeComputeEnvironmentsResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable DescribeComputeEnvironments where
  hashWithSalt _salt DescribeComputeEnvironments' {..} =
    _salt
      `Prelude.hashWithSalt` computeEnvironments
      `Prelude.hashWithSalt` maxResults
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeComputeEnvironments where
  rnf DescribeComputeEnvironments' {..} =
    Prelude.rnf computeEnvironments
      `Prelude.seq` Prelude.rnf maxResults
      `Prelude.seq` Prelude.rnf nextToken

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

instance Data.ToJSON DescribeComputeEnvironments where
  toJSON DescribeComputeEnvironments' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("computeEnvironments" Data..=)
              Prelude.<$> computeEnvironments,
            ("maxResults" Data..=) Prelude.<$> maxResults,
            ("nextToken" Data..=) Prelude.<$> nextToken
          ]
      )

instance Data.ToPath DescribeComputeEnvironments where
  toPath =
    Prelude.const "/v1/describecomputeenvironments"

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

-- | /See:/ 'newDescribeComputeEnvironmentsResponse' smart constructor.
data DescribeComputeEnvironmentsResponse = DescribeComputeEnvironmentsResponse'
  { -- | The list of compute environments.
    computeEnvironments :: Prelude.Maybe [ComputeEnvironmentDetail],
    -- | The @nextToken@ value to include in a future
    -- @DescribeComputeEnvironments@ request. When the results of a
    -- @DescribeComputeEnvironments@ request exceed @maxResults@, this value
    -- can be used to retrieve the next page of results. This value is @null@
    -- when there are no more results to return.
    nextToken :: 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 'DescribeComputeEnvironmentsResponse' 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:
--
-- 'computeEnvironments', 'describeComputeEnvironmentsResponse_computeEnvironments' - The list of compute environments.
--
-- 'nextToken', 'describeComputeEnvironmentsResponse_nextToken' - The @nextToken@ value to include in a future
-- @DescribeComputeEnvironments@ request. When the results of a
-- @DescribeComputeEnvironments@ request exceed @maxResults@, this value
-- can be used to retrieve the next page of results. This value is @null@
-- when there are no more results to return.
--
-- 'httpStatus', 'describeComputeEnvironmentsResponse_httpStatus' - The response's http status code.
newDescribeComputeEnvironmentsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeComputeEnvironmentsResponse
newDescribeComputeEnvironmentsResponse pHttpStatus_ =
  DescribeComputeEnvironmentsResponse'
    { computeEnvironments =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The list of compute environments.
describeComputeEnvironmentsResponse_computeEnvironments :: Lens.Lens' DescribeComputeEnvironmentsResponse (Prelude.Maybe [ComputeEnvironmentDetail])
describeComputeEnvironmentsResponse_computeEnvironments = Lens.lens (\DescribeComputeEnvironmentsResponse' {computeEnvironments} -> computeEnvironments) (\s@DescribeComputeEnvironmentsResponse' {} a -> s {computeEnvironments = a} :: DescribeComputeEnvironmentsResponse) Prelude.. Lens.mapping Lens.coerced

-- | The @nextToken@ value to include in a future
-- @DescribeComputeEnvironments@ request. When the results of a
-- @DescribeComputeEnvironments@ request exceed @maxResults@, this value
-- can be used to retrieve the next page of results. This value is @null@
-- when there are no more results to return.
describeComputeEnvironmentsResponse_nextToken :: Lens.Lens' DescribeComputeEnvironmentsResponse (Prelude.Maybe Prelude.Text)
describeComputeEnvironmentsResponse_nextToken = Lens.lens (\DescribeComputeEnvironmentsResponse' {nextToken} -> nextToken) (\s@DescribeComputeEnvironmentsResponse' {} a -> s {nextToken = a} :: DescribeComputeEnvironmentsResponse)

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

instance
  Prelude.NFData
    DescribeComputeEnvironmentsResponse
  where
  rnf DescribeComputeEnvironmentsResponse' {..} =
    Prelude.rnf computeEnvironments
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus