{-# 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.AppConfig.ListApplications
-- 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 all applications in your Amazon Web Services account.
module Amazonka.AppConfig.ListApplications
  ( -- * Creating a Request
    ListApplications (..),
    newListApplications,

    -- * Request Lenses
    listApplications_maxResults,
    listApplications_nextToken,

    -- * Destructuring the Response
    ListApplicationsResponse (..),
    newListApplicationsResponse,

    -- * Response Lenses
    listApplicationsResponse_items,
    listApplicationsResponse_nextToken,
    listApplicationsResponse_httpStatus,
  )
where

import Amazonka.AppConfig.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:/ 'newListApplications' smart constructor.
data ListApplications = ListApplications'
  { -- | The maximum number of items to return for this call. The call also
    -- returns a token that you can specify in a subsequent call to get the
    -- next set of results.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | A token to start the list. Next token is a pagination token generated by
    -- AppConfig to describe what page the previous List call ended on. For the
    -- first List request, the nextToken should not be set. On subsequent
    -- calls, the nextToken parameter should be set to the previous responses
    -- nextToken value. Use this token to get the next set of results.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListApplications' 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', 'listApplications_maxResults' - The maximum number of items to return for this call. The call also
-- returns a token that you can specify in a subsequent call to get the
-- next set of results.
--
-- 'nextToken', 'listApplications_nextToken' - A token to start the list. Next token is a pagination token generated by
-- AppConfig to describe what page the previous List call ended on. For the
-- first List request, the nextToken should not be set. On subsequent
-- calls, the nextToken parameter should be set to the previous responses
-- nextToken value. Use this token to get the next set of results.
newListApplications ::
  ListApplications
newListApplications =
  ListApplications'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of items to return for this call. The call also
-- returns a token that you can specify in a subsequent call to get the
-- next set of results.
listApplications_maxResults :: Lens.Lens' ListApplications (Prelude.Maybe Prelude.Natural)
listApplications_maxResults = Lens.lens (\ListApplications' {maxResults} -> maxResults) (\s@ListApplications' {} a -> s {maxResults = a} :: ListApplications)

-- | A token to start the list. Next token is a pagination token generated by
-- AppConfig to describe what page the previous List call ended on. For the
-- first List request, the nextToken should not be set. On subsequent
-- calls, the nextToken parameter should be set to the previous responses
-- nextToken value. Use this token to get the next set of results.
listApplications_nextToken :: Lens.Lens' ListApplications (Prelude.Maybe Prelude.Text)
listApplications_nextToken = Lens.lens (\ListApplications' {nextToken} -> nextToken) (\s@ListApplications' {} a -> s {nextToken = a} :: ListApplications)

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

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

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

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

instance Data.ToPath ListApplications where
  toPath = Prelude.const "/applications"

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

-- | /See:/ 'newListApplicationsResponse' smart constructor.
data ListApplicationsResponse = ListApplicationsResponse'
  { -- | The elements from this collection.
    items :: Prelude.Maybe [Application],
    -- | The token for the next set of items to return. Use this token to get the
    -- next set of results.
    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 'ListApplicationsResponse' 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:
--
-- 'items', 'listApplicationsResponse_items' - The elements from this collection.
--
-- 'nextToken', 'listApplicationsResponse_nextToken' - The token for the next set of items to return. Use this token to get the
-- next set of results.
--
-- 'httpStatus', 'listApplicationsResponse_httpStatus' - The response's http status code.
newListApplicationsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListApplicationsResponse
newListApplicationsResponse pHttpStatus_ =
  ListApplicationsResponse'
    { items = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The elements from this collection.
listApplicationsResponse_items :: Lens.Lens' ListApplicationsResponse (Prelude.Maybe [Application])
listApplicationsResponse_items = Lens.lens (\ListApplicationsResponse' {items} -> items) (\s@ListApplicationsResponse' {} a -> s {items = a} :: ListApplicationsResponse) Prelude.. Lens.mapping Lens.coerced

-- | The token for the next set of items to return. Use this token to get the
-- next set of results.
listApplicationsResponse_nextToken :: Lens.Lens' ListApplicationsResponse (Prelude.Maybe Prelude.Text)
listApplicationsResponse_nextToken = Lens.lens (\ListApplicationsResponse' {nextToken} -> nextToken) (\s@ListApplicationsResponse' {} a -> s {nextToken = a} :: ListApplicationsResponse)

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

instance Prelude.NFData ListApplicationsResponse where
  rnf ListApplicationsResponse' {..} =
    Prelude.rnf items
      `Prelude.seq` Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf httpStatus