{-# 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.AppSync.ListDataSources
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Lists the data sources for a given API.
--
-- This operation returns paginated results.
module Amazonka.AppSync.ListDataSources
  ( -- * Creating a Request
    ListDataSources (..),
    newListDataSources,

    -- * Request Lenses
    listDataSources_maxResults,
    listDataSources_nextToken,
    listDataSources_apiId,

    -- * Destructuring the Response
    ListDataSourcesResponse (..),
    newListDataSourcesResponse,

    -- * Response Lenses
    listDataSourcesResponse_dataSources,
    listDataSourcesResponse_nextToken,
    listDataSourcesResponse_httpStatus,
  )
where

import Amazonka.AppSync.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:/ 'newListDataSources' smart constructor.
data ListDataSources = ListDataSources'
  { -- | The maximum number of results that you want the request to return.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | An identifier that was returned from the previous call to this
    -- operation, which you can use to return the next set of items in the
    -- list.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The API ID.
    apiId :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListDataSources' 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', 'listDataSources_maxResults' - The maximum number of results that you want the request to return.
--
-- 'nextToken', 'listDataSources_nextToken' - An identifier that was returned from the previous call to this
-- operation, which you can use to return the next set of items in the
-- list.
--
-- 'apiId', 'listDataSources_apiId' - The API ID.
newListDataSources ::
  -- | 'apiId'
  Prelude.Text ->
  ListDataSources
newListDataSources pApiId_ =
  ListDataSources'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      apiId = pApiId_
    }

-- | The maximum number of results that you want the request to return.
listDataSources_maxResults :: Lens.Lens' ListDataSources (Prelude.Maybe Prelude.Natural)
listDataSources_maxResults = Lens.lens (\ListDataSources' {maxResults} -> maxResults) (\s@ListDataSources' {} a -> s {maxResults = a} :: ListDataSources)

-- | An identifier that was returned from the previous call to this
-- operation, which you can use to return the next set of items in the
-- list.
listDataSources_nextToken :: Lens.Lens' ListDataSources (Prelude.Maybe Prelude.Text)
listDataSources_nextToken = Lens.lens (\ListDataSources' {nextToken} -> nextToken) (\s@ListDataSources' {} a -> s {nextToken = a} :: ListDataSources)

-- | The API ID.
listDataSources_apiId :: Lens.Lens' ListDataSources Prelude.Text
listDataSources_apiId = Lens.lens (\ListDataSources' {apiId} -> apiId) (\s@ListDataSources' {} a -> s {apiId = a} :: ListDataSources)

instance Core.AWSPager ListDataSources where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listDataSourcesResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listDataSourcesResponse_dataSources
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listDataSources_nextToken
          Lens..~ rs
          Lens.^? listDataSourcesResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListDataSources where
  toPath ListDataSources' {..} =
    Prelude.mconcat
      ["/v1/apis/", Data.toBS apiId, "/datasources"]

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

-- | /See:/ 'newListDataSourcesResponse' smart constructor.
data ListDataSourcesResponse = ListDataSourcesResponse'
  { -- | The @DataSource@ objects.
    dataSources :: Prelude.Maybe [DataSource],
    -- | An identifier to pass in the next request to this operation to return
    -- the next set of items in the list.
    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 'ListDataSourcesResponse' 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:
--
-- 'dataSources', 'listDataSourcesResponse_dataSources' - The @DataSource@ objects.
--
-- 'nextToken', 'listDataSourcesResponse_nextToken' - An identifier to pass in the next request to this operation to return
-- the next set of items in the list.
--
-- 'httpStatus', 'listDataSourcesResponse_httpStatus' - The response's http status code.
newListDataSourcesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListDataSourcesResponse
newListDataSourcesResponse pHttpStatus_ =
  ListDataSourcesResponse'
    { dataSources =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The @DataSource@ objects.
listDataSourcesResponse_dataSources :: Lens.Lens' ListDataSourcesResponse (Prelude.Maybe [DataSource])
listDataSourcesResponse_dataSources = Lens.lens (\ListDataSourcesResponse' {dataSources} -> dataSources) (\s@ListDataSourcesResponse' {} a -> s {dataSources = a} :: ListDataSourcesResponse) Prelude.. Lens.mapping Lens.coerced

-- | An identifier to pass in the next request to this operation to return
-- the next set of items in the list.
listDataSourcesResponse_nextToken :: Lens.Lens' ListDataSourcesResponse (Prelude.Maybe Prelude.Text)
listDataSourcesResponse_nextToken = Lens.lens (\ListDataSourcesResponse' {nextToken} -> nextToken) (\s@ListDataSourcesResponse' {} a -> s {nextToken = a} :: ListDataSourcesResponse)

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

instance Prelude.NFData ListDataSourcesResponse where
  rnf ListDataSourcesResponse' {..} =
    Prelude.rnf dataSources
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus