{-# 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.DAX.DescribeDefaultParameters
-- 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 the default system parameter information for the DAX caching
-- software.
--
-- This operation returns paginated results.
module Amazonka.DAX.DescribeDefaultParameters
  ( -- * Creating a Request
    DescribeDefaultParameters (..),
    newDescribeDefaultParameters,

    -- * Request Lenses
    describeDefaultParameters_maxResults,
    describeDefaultParameters_nextToken,

    -- * Destructuring the Response
    DescribeDefaultParametersResponse (..),
    newDescribeDefaultParametersResponse,

    -- * Response Lenses
    describeDefaultParametersResponse_nextToken,
    describeDefaultParametersResponse_parameters,
    describeDefaultParametersResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import Amazonka.DAX.Types
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:/ 'newDescribeDefaultParameters' smart constructor.
data DescribeDefaultParameters = DescribeDefaultParameters'
  { -- | The maximum number of results to include in the response. If more
    -- results exist than the specified @MaxResults@ value, a token is included
    -- in the response so that the remaining results can be retrieved.
    --
    -- The value for @MaxResults@ must be between 20 and 100.
    maxResults :: Prelude.Maybe Prelude.Int,
    -- | An optional token returned from a prior request. Use this token for
    -- pagination of results from this action. If this parameter is specified,
    -- the response includes only results beyond the token, up to the value
    -- specified by @MaxResults@.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeDefaultParameters' 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:
--
-- 'maxResults', 'describeDefaultParameters_maxResults' - The maximum number of results to include in the response. If more
-- results exist than the specified @MaxResults@ value, a token is included
-- in the response so that the remaining results can be retrieved.
--
-- The value for @MaxResults@ must be between 20 and 100.
--
-- 'nextToken', 'describeDefaultParameters_nextToken' - An optional token returned from a prior request. Use this token for
-- pagination of results from this action. If this parameter is specified,
-- the response includes only results beyond the token, up to the value
-- specified by @MaxResults@.
newDescribeDefaultParameters ::
  DescribeDefaultParameters
newDescribeDefaultParameters =
  DescribeDefaultParameters'
    { maxResults =
        Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of results to include in the response. If more
-- results exist than the specified @MaxResults@ value, a token is included
-- in the response so that the remaining results can be retrieved.
--
-- The value for @MaxResults@ must be between 20 and 100.
describeDefaultParameters_maxResults :: Lens.Lens' DescribeDefaultParameters (Prelude.Maybe Prelude.Int)
describeDefaultParameters_maxResults = Lens.lens (\DescribeDefaultParameters' {maxResults} -> maxResults) (\s@DescribeDefaultParameters' {} a -> s {maxResults = a} :: DescribeDefaultParameters)

-- | An optional token returned from a prior request. Use this token for
-- pagination of results from this action. If this parameter is specified,
-- the response includes only results beyond the token, up to the value
-- specified by @MaxResults@.
describeDefaultParameters_nextToken :: Lens.Lens' DescribeDefaultParameters (Prelude.Maybe Prelude.Text)
describeDefaultParameters_nextToken = Lens.lens (\DescribeDefaultParameters' {nextToken} -> nextToken) (\s@DescribeDefaultParameters' {} a -> s {nextToken = a} :: DescribeDefaultParameters)

instance Core.AWSPager DescribeDefaultParameters where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? describeDefaultParametersResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? describeDefaultParametersResponse_parameters
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& describeDefaultParameters_nextToken
          Lens..~ rs
          Lens.^? describeDefaultParametersResponse_nextToken
          Prelude.. Lens._Just

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

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

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

instance Data.ToHeaders DescribeDefaultParameters where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "AmazonDAXV3.DescribeDefaultParameters" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

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

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

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

-- | /See:/ 'newDescribeDefaultParametersResponse' smart constructor.
data DescribeDefaultParametersResponse = DescribeDefaultParametersResponse'
  { -- | Provides an identifier to allow retrieval of paginated results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | A list of parameters. Each element in the list represents one parameter.
    parameters :: Prelude.Maybe [Parameter],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeDefaultParametersResponse' 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', 'describeDefaultParametersResponse_nextToken' - Provides an identifier to allow retrieval of paginated results.
--
-- 'parameters', 'describeDefaultParametersResponse_parameters' - A list of parameters. Each element in the list represents one parameter.
--
-- 'httpStatus', 'describeDefaultParametersResponse_httpStatus' - The response's http status code.
newDescribeDefaultParametersResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeDefaultParametersResponse
newDescribeDefaultParametersResponse pHttpStatus_ =
  DescribeDefaultParametersResponse'
    { nextToken =
        Prelude.Nothing,
      parameters = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | Provides an identifier to allow retrieval of paginated results.
describeDefaultParametersResponse_nextToken :: Lens.Lens' DescribeDefaultParametersResponse (Prelude.Maybe Prelude.Text)
describeDefaultParametersResponse_nextToken = Lens.lens (\DescribeDefaultParametersResponse' {nextToken} -> nextToken) (\s@DescribeDefaultParametersResponse' {} a -> s {nextToken = a} :: DescribeDefaultParametersResponse)

-- | A list of parameters. Each element in the list represents one parameter.
describeDefaultParametersResponse_parameters :: Lens.Lens' DescribeDefaultParametersResponse (Prelude.Maybe [Parameter])
describeDefaultParametersResponse_parameters = Lens.lens (\DescribeDefaultParametersResponse' {parameters} -> parameters) (\s@DescribeDefaultParametersResponse' {} a -> s {parameters = a} :: DescribeDefaultParametersResponse) Prelude.. Lens.mapping Lens.coerced

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

instance
  Prelude.NFData
    DescribeDefaultParametersResponse
  where
  rnf DescribeDefaultParametersResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf parameters
      `Prelude.seq` Prelude.rnf httpStatus