{-# 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.ListResolversByFunction
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- List the resolvers that are associated with a specific function.
--
-- This operation returns paginated results.
module Amazonka.AppSync.ListResolversByFunction
  ( -- * Creating a Request
    ListResolversByFunction (..),
    newListResolversByFunction,

    -- * Request Lenses
    listResolversByFunction_maxResults,
    listResolversByFunction_nextToken,
    listResolversByFunction_apiId,
    listResolversByFunction_functionId,

    -- * Destructuring the Response
    ListResolversByFunctionResponse (..),
    newListResolversByFunctionResponse,

    -- * Response Lenses
    listResolversByFunctionResponse_nextToken,
    listResolversByFunctionResponse_resolvers,
    listResolversByFunctionResponse_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:/ 'newListResolversByFunction' smart constructor.
data ListResolversByFunction = ListResolversByFunction'
  { -- | 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,
    -- | The function ID.
    functionId :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListResolversByFunction' 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', 'listResolversByFunction_maxResults' - The maximum number of results that you want the request to return.
--
-- 'nextToken', 'listResolversByFunction_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', 'listResolversByFunction_apiId' - The API ID.
--
-- 'functionId', 'listResolversByFunction_functionId' - The function ID.
newListResolversByFunction ::
  -- | 'apiId'
  Prelude.Text ->
  -- | 'functionId'
  Prelude.Text ->
  ListResolversByFunction
newListResolversByFunction pApiId_ pFunctionId_ =
  ListResolversByFunction'
    { maxResults =
        Prelude.Nothing,
      nextToken = Prelude.Nothing,
      apiId = pApiId_,
      functionId = pFunctionId_
    }

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

-- | 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.
listResolversByFunction_nextToken :: Lens.Lens' ListResolversByFunction (Prelude.Maybe Prelude.Text)
listResolversByFunction_nextToken = Lens.lens (\ListResolversByFunction' {nextToken} -> nextToken) (\s@ListResolversByFunction' {} a -> s {nextToken = a} :: ListResolversByFunction)

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

-- | The function ID.
listResolversByFunction_functionId :: Lens.Lens' ListResolversByFunction Prelude.Text
listResolversByFunction_functionId = Lens.lens (\ListResolversByFunction' {functionId} -> functionId) (\s@ListResolversByFunction' {} a -> s {functionId = a} :: ListResolversByFunction)

instance Core.AWSPager ListResolversByFunction where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listResolversByFunctionResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listResolversByFunctionResponse_resolvers
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listResolversByFunction_nextToken
          Lens..~ rs
          Lens.^? listResolversByFunctionResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListResolversByFunction where
  toPath ListResolversByFunction' {..} =
    Prelude.mconcat
      [ "/v1/apis/",
        Data.toBS apiId,
        "/functions/",
        Data.toBS functionId,
        "/resolvers"
      ]

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

-- | /See:/ 'newListResolversByFunctionResponse' smart constructor.
data ListResolversByFunctionResponse = ListResolversByFunctionResponse'
  { -- | An identifier that you can use to return the next set of items in the
    -- list.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The list of resolvers.
    resolvers :: Prelude.Maybe [Resolver],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListResolversByFunctionResponse' 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', 'listResolversByFunctionResponse_nextToken' - An identifier that you can use to return the next set of items in the
-- list.
--
-- 'resolvers', 'listResolversByFunctionResponse_resolvers' - The list of resolvers.
--
-- 'httpStatus', 'listResolversByFunctionResponse_httpStatus' - The response's http status code.
newListResolversByFunctionResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListResolversByFunctionResponse
newListResolversByFunctionResponse pHttpStatus_ =
  ListResolversByFunctionResponse'
    { nextToken =
        Prelude.Nothing,
      resolvers = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | An identifier that you can use to return the next set of items in the
-- list.
listResolversByFunctionResponse_nextToken :: Lens.Lens' ListResolversByFunctionResponse (Prelude.Maybe Prelude.Text)
listResolversByFunctionResponse_nextToken = Lens.lens (\ListResolversByFunctionResponse' {nextToken} -> nextToken) (\s@ListResolversByFunctionResponse' {} a -> s {nextToken = a} :: ListResolversByFunctionResponse)

-- | The list of resolvers.
listResolversByFunctionResponse_resolvers :: Lens.Lens' ListResolversByFunctionResponse (Prelude.Maybe [Resolver])
listResolversByFunctionResponse_resolvers = Lens.lens (\ListResolversByFunctionResponse' {resolvers} -> resolvers) (\s@ListResolversByFunctionResponse' {} a -> s {resolvers = a} :: ListResolversByFunctionResponse) Prelude.. Lens.mapping Lens.coerced

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

instance
  Prelude.NFData
    ListResolversByFunctionResponse
  where
  rnf ListResolversByFunctionResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf resolvers
      `Prelude.seq` Prelude.rnf httpStatus