{-# 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.LookoutVision.ListProjects
-- 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 Amazon Lookout for Vision projects in your AWS account that
-- are in the AWS Region in which you call @ListProjects@.
--
-- The @ListProjects@ operation is eventually consistent. Recent calls to
-- @CreateProject@ and @DeleteProject@ might take a while to appear in the
-- response from @ListProjects@.
--
-- This operation requires permissions to perform the
-- @lookoutvision:ListProjects@ operation.
--
-- This operation returns paginated results.
module Amazonka.LookoutVision.ListProjects
  ( -- * Creating a Request
    ListProjects (..),
    newListProjects,

    -- * Request Lenses
    listProjects_maxResults,
    listProjects_nextToken,

    -- * Destructuring the Response
    ListProjectsResponse (..),
    newListProjectsResponse,

    -- * Response Lenses
    listProjectsResponse_nextToken,
    listProjectsResponse_projects,
    listProjectsResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.LookoutVision.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newListProjects' smart constructor.
data ListProjects = ListProjects'
  { -- | The maximum number of results to return per paginated call. The largest
    -- value you can specify is 100. If you specify a value greater than 100, a
    -- ValidationException error occurs. The default value is 100.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | If the previous response was incomplete (because there is more data to
    -- retrieve), Amazon Lookout for Vision returns a pagination token in the
    -- response. You can use this pagination token to retrieve the next set of
    -- projects.
    nextToken :: Prelude.Maybe Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListProjects' 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', 'listProjects_maxResults' - The maximum number of results to return per paginated call. The largest
-- value you can specify is 100. If you specify a value greater than 100, a
-- ValidationException error occurs. The default value is 100.
--
-- 'nextToken', 'listProjects_nextToken' - If the previous response was incomplete (because there is more data to
-- retrieve), Amazon Lookout for Vision returns a pagination token in the
-- response. You can use this pagination token to retrieve the next set of
-- projects.
newListProjects ::
  ListProjects
newListProjects =
  ListProjects'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing
    }

-- | The maximum number of results to return per paginated call. The largest
-- value you can specify is 100. If you specify a value greater than 100, a
-- ValidationException error occurs. The default value is 100.
listProjects_maxResults :: Lens.Lens' ListProjects (Prelude.Maybe Prelude.Natural)
listProjects_maxResults = Lens.lens (\ListProjects' {maxResults} -> maxResults) (\s@ListProjects' {} a -> s {maxResults = a} :: ListProjects)

-- | If the previous response was incomplete (because there is more data to
-- retrieve), Amazon Lookout for Vision returns a pagination token in the
-- response. You can use this pagination token to retrieve the next set of
-- projects.
listProjects_nextToken :: Lens.Lens' ListProjects (Prelude.Maybe Prelude.Text)
listProjects_nextToken = Lens.lens (\ListProjects' {nextToken} -> nextToken) (\s@ListProjects' {} a -> s {nextToken = a} :: ListProjects)

instance Core.AWSPager ListProjects where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listProjectsResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listProjectsResponse_projects
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listProjects_nextToken
          Lens..~ rs
          Lens.^? listProjectsResponse_nextToken
          Prelude.. Lens._Just

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

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

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

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

instance Data.ToPath ListProjects where
  toPath = Prelude.const "/2020-11-20/projects"

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

-- | /See:/ 'newListProjectsResponse' smart constructor.
data ListProjectsResponse = ListProjectsResponse'
  { -- | If the response is truncated, Amazon Lookout for Vision returns this
    -- token that you can use in the subsequent request to retrieve the next
    -- set of projects.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | A list of projects in your AWS account.
    projects :: Prelude.Maybe [ProjectMetadata],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListProjectsResponse' 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', 'listProjectsResponse_nextToken' - If the response is truncated, Amazon Lookout for Vision returns this
-- token that you can use in the subsequent request to retrieve the next
-- set of projects.
--
-- 'projects', 'listProjectsResponse_projects' - A list of projects in your AWS account.
--
-- 'httpStatus', 'listProjectsResponse_httpStatus' - The response's http status code.
newListProjectsResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListProjectsResponse
newListProjectsResponse pHttpStatus_ =
  ListProjectsResponse'
    { nextToken = Prelude.Nothing,
      projects = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | If the response is truncated, Amazon Lookout for Vision returns this
-- token that you can use in the subsequent request to retrieve the next
-- set of projects.
listProjectsResponse_nextToken :: Lens.Lens' ListProjectsResponse (Prelude.Maybe Prelude.Text)
listProjectsResponse_nextToken = Lens.lens (\ListProjectsResponse' {nextToken} -> nextToken) (\s@ListProjectsResponse' {} a -> s {nextToken = a} :: ListProjectsResponse)

-- | A list of projects in your AWS account.
listProjectsResponse_projects :: Lens.Lens' ListProjectsResponse (Prelude.Maybe [ProjectMetadata])
listProjectsResponse_projects = Lens.lens (\ListProjectsResponse' {projects} -> projects) (\s@ListProjectsResponse' {} a -> s {projects = a} :: ListProjectsResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData ListProjectsResponse where
  rnf ListProjectsResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf projects
      `Prelude.seq` Prelude.rnf httpStatus