{-# 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.Personalize.ListDatasets
-- 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 list of datasets contained in the given dataset group. The
-- response provides the properties for each dataset, including the Amazon
-- Resource Name (ARN). For more information on datasets, see
-- <https://docs.aws.amazon.com/personalize/latest/dg/API_CreateDataset.html CreateDataset>.
--
-- This operation returns paginated results.
module Amazonka.Personalize.ListDatasets
  ( -- * Creating a Request
    ListDatasets (..),
    newListDatasets,

    -- * Request Lenses
    listDatasets_datasetGroupArn,
    listDatasets_maxResults,
    listDatasets_nextToken,

    -- * Destructuring the Response
    ListDatasetsResponse (..),
    newListDatasetsResponse,

    -- * Response Lenses
    listDatasetsResponse_datasets,
    listDatasetsResponse_nextToken,
    listDatasetsResponse_httpStatus,
  )
where

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

-- | /See:/ 'newListDatasets' smart constructor.
data ListDatasets = ListDatasets'
  { -- | The Amazon Resource Name (ARN) of the dataset group that contains the
    -- datasets to list.
    datasetGroupArn :: Prelude.Maybe Prelude.Text,
    -- | The maximum number of datasets to return.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | A token returned from the previous call to @ListDatasetImportJobs@ for
    -- getting the next set of dataset import jobs (if they exist).
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListDatasets' 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:
--
-- 'datasetGroupArn', 'listDatasets_datasetGroupArn' - The Amazon Resource Name (ARN) of the dataset group that contains the
-- datasets to list.
--
-- 'maxResults', 'listDatasets_maxResults' - The maximum number of datasets to return.
--
-- 'nextToken', 'listDatasets_nextToken' - A token returned from the previous call to @ListDatasetImportJobs@ for
-- getting the next set of dataset import jobs (if they exist).
newListDatasets ::
  ListDatasets
newListDatasets =
  ListDatasets'
    { datasetGroupArn = Prelude.Nothing,
      maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The Amazon Resource Name (ARN) of the dataset group that contains the
-- datasets to list.
listDatasets_datasetGroupArn :: Lens.Lens' ListDatasets (Prelude.Maybe Prelude.Text)
listDatasets_datasetGroupArn = Lens.lens (\ListDatasets' {datasetGroupArn} -> datasetGroupArn) (\s@ListDatasets' {} a -> s {datasetGroupArn = a} :: ListDatasets)

-- | The maximum number of datasets to return.
listDatasets_maxResults :: Lens.Lens' ListDatasets (Prelude.Maybe Prelude.Natural)
listDatasets_maxResults = Lens.lens (\ListDatasets' {maxResults} -> maxResults) (\s@ListDatasets' {} a -> s {maxResults = a} :: ListDatasets)

-- | A token returned from the previous call to @ListDatasetImportJobs@ for
-- getting the next set of dataset import jobs (if they exist).
listDatasets_nextToken :: Lens.Lens' ListDatasets (Prelude.Maybe Prelude.Text)
listDatasets_nextToken = Lens.lens (\ListDatasets' {nextToken} -> nextToken) (\s@ListDatasets' {} a -> s {nextToken = a} :: ListDatasets)

instance Core.AWSPager ListDatasets where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listDatasetsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listDatasetsResponse_datasets
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listDatasets_nextToken
          Lens..~ rs
          Lens.^? listDatasetsResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

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

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

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

-- | /See:/ 'newListDatasetsResponse' smart constructor.
data ListDatasetsResponse = ListDatasetsResponse'
  { -- | An array of @Dataset@ objects. Each object provides metadata
    -- information.
    datasets :: Prelude.Maybe [DatasetSummary],
    -- | A token for getting the next set of datasets (if they exist).
    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 'ListDatasetsResponse' 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:
--
-- 'datasets', 'listDatasetsResponse_datasets' - An array of @Dataset@ objects. Each object provides metadata
-- information.
--
-- 'nextToken', 'listDatasetsResponse_nextToken' - A token for getting the next set of datasets (if they exist).
--
-- 'httpStatus', 'listDatasetsResponse_httpStatus' - The response's http status code.
newListDatasetsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListDatasetsResponse
newListDatasetsResponse pHttpStatus_ =
  ListDatasetsResponse'
    { datasets = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | An array of @Dataset@ objects. Each object provides metadata
-- information.
listDatasetsResponse_datasets :: Lens.Lens' ListDatasetsResponse (Prelude.Maybe [DatasetSummary])
listDatasetsResponse_datasets = Lens.lens (\ListDatasetsResponse' {datasets} -> datasets) (\s@ListDatasetsResponse' {} a -> s {datasets = a} :: ListDatasetsResponse) Prelude.. Lens.mapping Lens.coerced

-- | A token for getting the next set of datasets (if they exist).
listDatasetsResponse_nextToken :: Lens.Lens' ListDatasetsResponse (Prelude.Maybe Prelude.Text)
listDatasetsResponse_nextToken = Lens.lens (\ListDatasetsResponse' {nextToken} -> nextToken) (\s@ListDatasetsResponse' {} a -> s {nextToken = a} :: ListDatasetsResponse)

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

instance Prelude.NFData ListDatasetsResponse where
  rnf ListDatasetsResponse' {..} =
    Prelude.rnf datasets
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus