{-# 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.AppStream.DescribeFleets
-- 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 a list that describes one or more specified fleets, if the
-- fleet names are provided. Otherwise, all fleets in the account are
-- described.
--
-- This operation returns paginated results.
module Amazonka.AppStream.DescribeFleets
  ( -- * Creating a Request
    DescribeFleets (..),
    newDescribeFleets,

    -- * Request Lenses
    describeFleets_names,
    describeFleets_nextToken,

    -- * Destructuring the Response
    DescribeFleetsResponse (..),
    newDescribeFleetsResponse,

    -- * Response Lenses
    describeFleetsResponse_fleets,
    describeFleetsResponse_nextToken,
    describeFleetsResponse_httpStatus,
  )
where

import Amazonka.AppStream.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:/ 'newDescribeFleets' smart constructor.
data DescribeFleets = DescribeFleets'
  { -- | The names of the fleets to describe.
    names :: Prelude.Maybe [Prelude.Text],
    -- | The pagination token to use to retrieve the next page of results for
    -- this operation. If this value is null, it retrieves the first page.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeFleets' 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:
--
-- 'names', 'describeFleets_names' - The names of the fleets to describe.
--
-- 'nextToken', 'describeFleets_nextToken' - The pagination token to use to retrieve the next page of results for
-- this operation. If this value is null, it retrieves the first page.
newDescribeFleets ::
  DescribeFleets
newDescribeFleets =
  DescribeFleets'
    { names = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The names of the fleets to describe.
describeFleets_names :: Lens.Lens' DescribeFleets (Prelude.Maybe [Prelude.Text])
describeFleets_names = Lens.lens (\DescribeFleets' {names} -> names) (\s@DescribeFleets' {} a -> s {names = a} :: DescribeFleets) Prelude.. Lens.mapping Lens.coerced

-- | The pagination token to use to retrieve the next page of results for
-- this operation. If this value is null, it retrieves the first page.
describeFleets_nextToken :: Lens.Lens' DescribeFleets (Prelude.Maybe Prelude.Text)
describeFleets_nextToken = Lens.lens (\DescribeFleets' {nextToken} -> nextToken) (\s@DescribeFleets' {} a -> s {nextToken = a} :: DescribeFleets)

instance Core.AWSPager DescribeFleets where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeFleetsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeFleetsResponse_fleets
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeFleets_nextToken
          Lens..~ rs
          Lens.^? describeFleetsResponse_nextToken
          Prelude.. Lens._Just

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

instance Prelude.Hashable DescribeFleets where
  hashWithSalt _salt DescribeFleets' {..} =
    _salt
      `Prelude.hashWithSalt` names
      `Prelude.hashWithSalt` nextToken

instance Prelude.NFData DescribeFleets where
  rnf DescribeFleets' {..} =
    Prelude.rnf names
      `Prelude.seq` Prelude.rnf nextToken

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

instance Data.ToJSON DescribeFleets where
  toJSON DescribeFleets' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("Names" Data..=) Prelude.<$> names,
            ("NextToken" Data..=) Prelude.<$> nextToken
          ]
      )

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

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

-- | /See:/ 'newDescribeFleetsResponse' smart constructor.
data DescribeFleetsResponse = DescribeFleetsResponse'
  { -- | Information about the fleets.
    fleets :: Prelude.Maybe [Fleet],
    -- | The pagination token to use to retrieve the next page of results for
    -- this operation. If there are no more pages, this value is null.
    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 'DescribeFleetsResponse' 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:
--
-- 'fleets', 'describeFleetsResponse_fleets' - Information about the fleets.
--
-- 'nextToken', 'describeFleetsResponse_nextToken' - The pagination token to use to retrieve the next page of results for
-- this operation. If there are no more pages, this value is null.
--
-- 'httpStatus', 'describeFleetsResponse_httpStatus' - The response's http status code.
newDescribeFleetsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeFleetsResponse
newDescribeFleetsResponse pHttpStatus_ =
  DescribeFleetsResponse'
    { fleets = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Information about the fleets.
describeFleetsResponse_fleets :: Lens.Lens' DescribeFleetsResponse (Prelude.Maybe [Fleet])
describeFleetsResponse_fleets = Lens.lens (\DescribeFleetsResponse' {fleets} -> fleets) (\s@DescribeFleetsResponse' {} a -> s {fleets = a} :: DescribeFleetsResponse) Prelude.. Lens.mapping Lens.coerced

-- | The pagination token to use to retrieve the next page of results for
-- this operation. If there are no more pages, this value is null.
describeFleetsResponse_nextToken :: Lens.Lens' DescribeFleetsResponse (Prelude.Maybe Prelude.Text)
describeFleetsResponse_nextToken = Lens.lens (\DescribeFleetsResponse' {nextToken} -> nextToken) (\s@DescribeFleetsResponse' {} a -> s {nextToken = a} :: DescribeFleetsResponse)

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

instance Prelude.NFData DescribeFleetsResponse where
  rnf DescribeFleetsResponse' {..} =
    Prelude.rnf fleets
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus