{-# 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.ListResolvers
-- 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 resolvers for a given API and type.
--
-- This operation returns paginated results.
module Amazonka.AppSync.ListResolvers
  ( -- * Creating a Request
    ListResolvers (..),
    newListResolvers,

    -- * Request Lenses
    listResolvers_maxResults,
    listResolvers_nextToken,
    listResolvers_apiId,
    listResolvers_typeName,

    -- * Destructuring the Response
    ListResolversResponse (..),
    newListResolversResponse,

    -- * Response Lenses
    listResolversResponse_nextToken,
    listResolversResponse_resolvers,
    listResolversResponse_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:/ 'newListResolvers' smart constructor.
data ListResolvers = ListResolvers'
  { -- | 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 type name.
    typeName :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListResolvers' 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', 'listResolvers_maxResults' - The maximum number of results that you want the request to return.
--
-- 'nextToken', 'listResolvers_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', 'listResolvers_apiId' - The API ID.
--
-- 'typeName', 'listResolvers_typeName' - The type name.
newListResolvers ::
  -- | 'apiId'
  Prelude.Text ->
  -- | 'typeName'
  Prelude.Text ->
  ListResolvers
newListResolvers pApiId_ pTypeName_ =
  ListResolvers'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      apiId = pApiId_,
      typeName = pTypeName_
    }

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

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

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

-- | The type name.
listResolvers_typeName :: Lens.Lens' ListResolvers Prelude.Text
listResolvers_typeName = Lens.lens (\ListResolvers' {typeName} -> typeName) (\s@ListResolvers' {} a -> s {typeName = a} :: ListResolvers)

instance Core.AWSPager ListResolvers where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listResolversResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listResolversResponse_resolvers
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listResolvers_nextToken
          Lens..~ rs
          Lens.^? listResolversResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListResolvers where
  toPath ListResolvers' {..} =
    Prelude.mconcat
      [ "/v1/apis/",
        Data.toBS apiId,
        "/types/",
        Data.toBS typeName,
        "/resolvers"
      ]

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

-- | /See:/ 'newListResolversResponse' smart constructor.
data ListResolversResponse = ListResolversResponse'
  { -- | 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 @Resolver@ objects.
    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 'ListResolversResponse' 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', 'listResolversResponse_nextToken' - An identifier to pass in the next request to this operation to return
-- the next set of items in the list.
--
-- 'resolvers', 'listResolversResponse_resolvers' - The @Resolver@ objects.
--
-- 'httpStatus', 'listResolversResponse_httpStatus' - The response's http status code.
newListResolversResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListResolversResponse
newListResolversResponse pHttpStatus_ =
  ListResolversResponse'
    { nextToken = Prelude.Nothing,
      resolvers = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

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

-- | The @Resolver@ objects.
listResolversResponse_resolvers :: Lens.Lens' ListResolversResponse (Prelude.Maybe [Resolver])
listResolversResponse_resolvers = Lens.lens (\ListResolversResponse' {resolvers} -> resolvers) (\s@ListResolversResponse' {} a -> s {resolvers = a} :: ListResolversResponse) Prelude.. Lens.mapping Lens.coerced

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

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