{-# 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.Forecast.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 a list of datasets created using the
-- <https://docs.aws.amazon.com/forecast/latest/dg/API_CreateDataset.html CreateDataset>
-- operation. For each dataset, a summary of its properties, including its
-- Amazon Resource Name (ARN), is returned. To retrieve the complete set of
-- properties, use the ARN with the
-- <https://docs.aws.amazon.com/forecast/latest/dg/API_DescribeDataset.html DescribeDataset>
-- operation.
--
-- This operation returns paginated results.
module Amazonka.Forecast.ListDatasets
  ( -- * Creating a Request
    ListDatasets (..),
    newListDatasets,

    -- * Request Lenses
    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.Forecast.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 number of items to return in the response.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | If the result of the previous request was truncated, the response
    -- includes a @NextToken@. To retrieve the next set of results, use the
    -- token in the next request. Tokens expire after 24 hours.
    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:
--
-- 'maxResults', 'listDatasets_maxResults' - The number of items to return in the response.
--
-- 'nextToken', 'listDatasets_nextToken' - If the result of the previous request was truncated, the response
-- includes a @NextToken@. To retrieve the next set of results, use the
-- token in the next request. Tokens expire after 24 hours.
newListDatasets ::
  ListDatasets
newListDatasets =
  ListDatasets'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

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

-- | If the result of the previous request was truncated, the response
-- includes a @NextToken@. To retrieve the next set of results, use the
-- token in the next request. Tokens expire after 24 hours.
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` maxResults
      `Prelude.hashWithSalt` nextToken

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

instance Data.ToHeaders ListDatasets where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "AmazonForecast.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
          [ ("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 objects that summarize each dataset\'s properties.
    datasets :: Prelude.Maybe [DatasetSummary],
    -- | If the response is truncated, Amazon Forecast returns this token. To
    -- retrieve the next set of results, use the token in the next request.
    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 objects that summarize each dataset\'s properties.
--
-- 'nextToken', 'listDatasetsResponse_nextToken' - If the response is truncated, Amazon Forecast returns this token. To
-- retrieve the next set of results, use the token in the next request.
--
-- '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 objects that summarize each dataset\'s properties.
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

-- | If the response is truncated, Amazon Forecast returns this token. To
-- retrieve the next set of results, use the token in the next request.
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