{-# 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.DocDbElastic.ListClusters
-- 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 information about provisioned Elastic DocumentDB clusters.
--
-- This operation returns paginated results.
module Amazonka.DocDbElastic.ListClusters
  ( -- * Creating a Request
    ListClusters (..),
    newListClusters,

    -- * Request Lenses
    listClusters_maxResults,
    listClusters_nextToken,

    -- * Destructuring the Response
    ListClustersResponse (..),
    newListClustersResponse,

    -- * Response Lenses
    listClustersResponse_clusters,
    listClustersResponse_nextToken,
    listClustersResponse_httpStatus,
  )
where

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

-- | /See:/ 'newListClusters' smart constructor.
data ListClusters = ListClusters'
  { -- | The maximum number of entries to recieve in the response.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | The nextToken which is used the get the next page of data.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListClusters' 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', 'listClusters_maxResults' - The maximum number of entries to recieve in the response.
--
-- 'nextToken', 'listClusters_nextToken' - The nextToken which is used the get the next page of data.
newListClusters ::
  ListClusters
newListClusters =
  ListClusters'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of entries to recieve in the response.
listClusters_maxResults :: Lens.Lens' ListClusters (Prelude.Maybe Prelude.Natural)
listClusters_maxResults = Lens.lens (\ListClusters' {maxResults} -> maxResults) (\s@ListClusters' {} a -> s {maxResults = a} :: ListClusters)

-- | The nextToken which is used the get the next page of data.
listClusters_nextToken :: Lens.Lens' ListClusters (Prelude.Maybe Prelude.Text)
listClusters_nextToken = Lens.lens (\ListClusters' {nextToken} -> nextToken) (\s@ListClusters' {} a -> s {nextToken = a} :: ListClusters)

instance Core.AWSPager ListClusters where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listClustersResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listClustersResponse_clusters
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listClusters_nextToken
          Lens..~ rs
          Lens.^? listClustersResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListClusters where
  toPath = Prelude.const "/clusters"

instance Data.ToQuery ListClusters where
  toQuery ListClusters' {..} =
    Prelude.mconcat
      [ "maxResults" Data.=: maxResults,
        "nextToken" Data.=: nextToken
      ]

-- | /See:/ 'newListClustersResponse' smart constructor.
data ListClustersResponse = ListClustersResponse'
  { -- | A list of Elastic DocumentDB cluster.
    clusters :: Prelude.Maybe [ClusterInList],
    -- | The response will provide a nextToken if there is more data beyond the
    -- maxResults.
    --
    -- If there is no more data in the responce, the nextToken will not be
    -- returned.
    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 'ListClustersResponse' 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:
--
-- 'clusters', 'listClustersResponse_clusters' - A list of Elastic DocumentDB cluster.
--
-- 'nextToken', 'listClustersResponse_nextToken' - The response will provide a nextToken if there is more data beyond the
-- maxResults.
--
-- If there is no more data in the responce, the nextToken will not be
-- returned.
--
-- 'httpStatus', 'listClustersResponse_httpStatus' - The response's http status code.
newListClustersResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListClustersResponse
newListClustersResponse pHttpStatus_ =
  ListClustersResponse'
    { clusters = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | A list of Elastic DocumentDB cluster.
listClustersResponse_clusters :: Lens.Lens' ListClustersResponse (Prelude.Maybe [ClusterInList])
listClustersResponse_clusters = Lens.lens (\ListClustersResponse' {clusters} -> clusters) (\s@ListClustersResponse' {} a -> s {clusters = a} :: ListClustersResponse) Prelude.. Lens.mapping Lens.coerced

-- | The response will provide a nextToken if there is more data beyond the
-- maxResults.
--
-- If there is no more data in the responce, the nextToken will not be
-- returned.
listClustersResponse_nextToken :: Lens.Lens' ListClustersResponse (Prelude.Maybe Prelude.Text)
listClustersResponse_nextToken = Lens.lens (\ListClustersResponse' {nextToken} -> nextToken) (\s@ListClustersResponse' {} a -> s {nextToken = a} :: ListClustersResponse)

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

instance Prelude.NFData ListClustersResponse where
  rnf ListClustersResponse' {..} =
    Prelude.rnf clusters
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus