{-# 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.DirectoryService.DescribeDirectories
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Obtains information about the directories that belong to this account.
--
-- You can retrieve information about specific directories by passing the
-- directory identifiers in the @DirectoryIds@ parameter. Otherwise, all
-- directories that belong to the current account are returned.
--
-- This operation supports pagination with the use of the @NextToken@
-- request and response parameters. If more results are available, the
-- @DescribeDirectoriesResult.NextToken@ member contains a token that you
-- pass in the next call to DescribeDirectories to retrieve the next set of
-- items.
--
-- You can also specify a maximum number of return results with the @Limit@
-- parameter.
--
-- This operation returns paginated results.
module Amazonka.DirectoryService.DescribeDirectories
  ( -- * Creating a Request
    DescribeDirectories (..),
    newDescribeDirectories,

    -- * Request Lenses
    describeDirectories_directoryIds,
    describeDirectories_limit,
    describeDirectories_nextToken,

    -- * Destructuring the Response
    DescribeDirectoriesResponse (..),
    newDescribeDirectoriesResponse,

    -- * Response Lenses
    describeDirectoriesResponse_directoryDescriptions,
    describeDirectoriesResponse_nextToken,
    describeDirectoriesResponse_httpStatus,
  )
where

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

-- | Contains the inputs for the DescribeDirectories operation.
--
-- /See:/ 'newDescribeDirectories' smart constructor.
data DescribeDirectories = DescribeDirectories'
  { -- | A list of identifiers of the directories for which to obtain the
    -- information. If this member is null, all directories that belong to the
    -- current account are returned.
    --
    -- An empty list results in an @InvalidParameterException@ being thrown.
    directoryIds :: Prelude.Maybe [Prelude.Text],
    -- | The maximum number of items to return. If this value is zero, the
    -- maximum number of items is specified by the limitations of the
    -- operation.
    limit :: Prelude.Maybe Prelude.Natural,
    -- | The @DescribeDirectoriesResult.NextToken@ value from a previous call to
    -- DescribeDirectories. Pass null if this is the first call.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeDirectories' 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:
--
-- 'directoryIds', 'describeDirectories_directoryIds' - A list of identifiers of the directories for which to obtain the
-- information. If this member is null, all directories that belong to the
-- current account are returned.
--
-- An empty list results in an @InvalidParameterException@ being thrown.
--
-- 'limit', 'describeDirectories_limit' - The maximum number of items to return. If this value is zero, the
-- maximum number of items is specified by the limitations of the
-- operation.
--
-- 'nextToken', 'describeDirectories_nextToken' - The @DescribeDirectoriesResult.NextToken@ value from a previous call to
-- DescribeDirectories. Pass null if this is the first call.
newDescribeDirectories ::
  DescribeDirectories
newDescribeDirectories =
  DescribeDirectories'
    { directoryIds =
        Prelude.Nothing,
      limit = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | A list of identifiers of the directories for which to obtain the
-- information. If this member is null, all directories that belong to the
-- current account are returned.
--
-- An empty list results in an @InvalidParameterException@ being thrown.
describeDirectories_directoryIds :: Lens.Lens' DescribeDirectories (Prelude.Maybe [Prelude.Text])
describeDirectories_directoryIds = Lens.lens (\DescribeDirectories' {directoryIds} -> directoryIds) (\s@DescribeDirectories' {} a -> s {directoryIds = a} :: DescribeDirectories) Prelude.. Lens.mapping Lens.coerced

-- | The maximum number of items to return. If this value is zero, the
-- maximum number of items is specified by the limitations of the
-- operation.
describeDirectories_limit :: Lens.Lens' DescribeDirectories (Prelude.Maybe Prelude.Natural)
describeDirectories_limit = Lens.lens (\DescribeDirectories' {limit} -> limit) (\s@DescribeDirectories' {} a -> s {limit = a} :: DescribeDirectories)

-- | The @DescribeDirectoriesResult.NextToken@ value from a previous call to
-- DescribeDirectories. Pass null if this is the first call.
describeDirectories_nextToken :: Lens.Lens' DescribeDirectories (Prelude.Maybe Prelude.Text)
describeDirectories_nextToken = Lens.lens (\DescribeDirectories' {nextToken} -> nextToken) (\s@DescribeDirectories' {} a -> s {nextToken = a} :: DescribeDirectories)

instance Core.AWSPager DescribeDirectories where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeDirectoriesResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeDirectoriesResponse_directoryDescriptions
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeDirectories_nextToken
          Lens..~ rs
          Lens.^? describeDirectoriesResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable DescribeDirectories where
  hashWithSalt _salt DescribeDirectories' {..} =
    _salt
      `Prelude.hashWithSalt` directoryIds
      `Prelude.hashWithSalt` limit
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeDirectories where
  rnf DescribeDirectories' {..} =
    Prelude.rnf directoryIds
      `Prelude.seq` Prelude.rnf limit
      `Prelude.seq` Prelude.rnf nextToken

instance Data.ToHeaders DescribeDirectories where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "DirectoryService_20150416.DescribeDirectories" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON DescribeDirectories where
  toJSON DescribeDirectories' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("DirectoryIds" Data..=) Prelude.<$> directoryIds,
            ("Limit" Data..=) Prelude.<$> limit,
            ("NextToken" Data..=) Prelude.<$> nextToken
          ]
      )

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

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

-- | Contains the results of the DescribeDirectories operation.
--
-- /See:/ 'newDescribeDirectoriesResponse' smart constructor.
data DescribeDirectoriesResponse = DescribeDirectoriesResponse'
  { -- | The list of DirectoryDescription objects that were retrieved.
    --
    -- It is possible that this list contains less than the number of items
    -- specified in the @Limit@ member of the request. This occurs if there are
    -- less than the requested number of items left to retrieve, or if the
    -- limitations of the operation have been exceeded.
    directoryDescriptions :: Prelude.Maybe [DirectoryDescription],
    -- | If not null, more results are available. Pass this value for the
    -- @NextToken@ parameter in a subsequent call to DescribeDirectories to
    -- retrieve the next set of items.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeDirectoriesResponse' 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:
--
-- 'directoryDescriptions', 'describeDirectoriesResponse_directoryDescriptions' - The list of DirectoryDescription objects that were retrieved.
--
-- It is possible that this list contains less than the number of items
-- specified in the @Limit@ member of the request. This occurs if there are
-- less than the requested number of items left to retrieve, or if the
-- limitations of the operation have been exceeded.
--
-- 'nextToken', 'describeDirectoriesResponse_nextToken' - If not null, more results are available. Pass this value for the
-- @NextToken@ parameter in a subsequent call to DescribeDirectories to
-- retrieve the next set of items.
--
-- 'httpStatus', 'describeDirectoriesResponse_httpStatus' - The response's http status code.
newDescribeDirectoriesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeDirectoriesResponse
newDescribeDirectoriesResponse pHttpStatus_ =
  DescribeDirectoriesResponse'
    { directoryDescriptions =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The list of DirectoryDescription objects that were retrieved.
--
-- It is possible that this list contains less than the number of items
-- specified in the @Limit@ member of the request. This occurs if there are
-- less than the requested number of items left to retrieve, or if the
-- limitations of the operation have been exceeded.
describeDirectoriesResponse_directoryDescriptions :: Lens.Lens' DescribeDirectoriesResponse (Prelude.Maybe [DirectoryDescription])
describeDirectoriesResponse_directoryDescriptions = Lens.lens (\DescribeDirectoriesResponse' {directoryDescriptions} -> directoryDescriptions) (\s@DescribeDirectoriesResponse' {} a -> s {directoryDescriptions = a} :: DescribeDirectoriesResponse) Prelude.. Lens.mapping Lens.coerced

-- | If not null, more results are available. Pass this value for the
-- @NextToken@ parameter in a subsequent call to DescribeDirectories to
-- retrieve the next set of items.
describeDirectoriesResponse_nextToken :: Lens.Lens' DescribeDirectoriesResponse (Prelude.Maybe Prelude.Text)
describeDirectoriesResponse_nextToken = Lens.lens (\DescribeDirectoriesResponse' {nextToken} -> nextToken) (\s@DescribeDirectoriesResponse' {} a -> s {nextToken = a} :: DescribeDirectoriesResponse)

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

instance Prelude.NFData DescribeDirectoriesResponse where
  rnf DescribeDirectoriesResponse' {..} =
    Prelude.rnf directoryDescriptions
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus