{-# 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.Rekognition.ListProjectPolicies
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Gets a list of the project policies attached to a project.
--
-- To attach a project policy to a project, call PutProjectPolicy. To
-- remove a project policy from a project, call DeleteProjectPolicy.
--
-- This operation returns paginated results.
module Amazonka.Rekognition.ListProjectPolicies
  ( -- * Creating a Request
    ListProjectPolicies (..),
    newListProjectPolicies,

    -- * Request Lenses
    listProjectPolicies_maxResults,
    listProjectPolicies_nextToken,
    listProjectPolicies_projectArn,

    -- * Destructuring the Response
    ListProjectPoliciesResponse (..),
    newListProjectPoliciesResponse,

    -- * Response Lenses
    listProjectPoliciesResponse_nextToken,
    listProjectPoliciesResponse_projectPolicies,
    listProjectPoliciesResponse_httpStatus,
  )
where

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 Amazonka.Rekognition.Types
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | /See:/ 'newListProjectPolicies' smart constructor.
data ListProjectPolicies = ListProjectPolicies'
  { -- | The maximum number of results to return per paginated call. The largest
    -- value you can specify is 5. If you specify a value greater than 5, a
    -- ValidationException error occurs. The default value is 5.
    maxResults :: Prelude.Maybe Prelude.Natural,
    -- | If the previous response was incomplete (because there is more results
    -- to retrieve), Amazon Rekognition Custom Labels returns a pagination
    -- token in the response. You can use this pagination token to retrieve the
    -- next set of results.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | The ARN of the project for which you want to list the project policies.
    projectArn :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListProjectPolicies' 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', 'listProjectPolicies_maxResults' - The maximum number of results to return per paginated call. The largest
-- value you can specify is 5. If you specify a value greater than 5, a
-- ValidationException error occurs. The default value is 5.
--
-- 'nextToken', 'listProjectPolicies_nextToken' - If the previous response was incomplete (because there is more results
-- to retrieve), Amazon Rekognition Custom Labels returns a pagination
-- token in the response. You can use this pagination token to retrieve the
-- next set of results.
--
-- 'projectArn', 'listProjectPolicies_projectArn' - The ARN of the project for which you want to list the project policies.
newListProjectPolicies ::
  -- | 'projectArn'
  Prelude.Text ->
  ListProjectPolicies
newListProjectPolicies pProjectArn_ =
  ListProjectPolicies'
    { maxResults = Prelude.Nothing,
      nextToken = Prelude.Nothing,
      projectArn = pProjectArn_
    }

-- | The maximum number of results to return per paginated call. The largest
-- value you can specify is 5. If you specify a value greater than 5, a
-- ValidationException error occurs. The default value is 5.
listProjectPolicies_maxResults :: Lens.Lens' ListProjectPolicies (Prelude.Maybe Prelude.Natural)
listProjectPolicies_maxResults = Lens.lens (\ListProjectPolicies' {maxResults} -> maxResults) (\s@ListProjectPolicies' {} a -> s {maxResults = a} :: ListProjectPolicies)

-- | If the previous response was incomplete (because there is more results
-- to retrieve), Amazon Rekognition Custom Labels returns a pagination
-- token in the response. You can use this pagination token to retrieve the
-- next set of results.
listProjectPolicies_nextToken :: Lens.Lens' ListProjectPolicies (Prelude.Maybe Prelude.Text)
listProjectPolicies_nextToken = Lens.lens (\ListProjectPolicies' {nextToken} -> nextToken) (\s@ListProjectPolicies' {} a -> s {nextToken = a} :: ListProjectPolicies)

-- | The ARN of the project for which you want to list the project policies.
listProjectPolicies_projectArn :: Lens.Lens' ListProjectPolicies Prelude.Text
listProjectPolicies_projectArn = Lens.lens (\ListProjectPolicies' {projectArn} -> projectArn) (\s@ListProjectPolicies' {} a -> s {projectArn = a} :: ListProjectPolicies)

instance Core.AWSPager ListProjectPolicies where
  page rq rs
    | Core.stop
        ( rs
            Lens.^? listProjectPoliciesResponse_nextToken
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Core.stop
        ( rs
            Lens.^? listProjectPoliciesResponse_projectPolicies
            Prelude.. Lens._Just
        ) =
        Prelude.Nothing
    | Prelude.otherwise =
        Prelude.Just
          Prelude.$ rq
          Prelude.& listProjectPolicies_nextToken
          Lens..~ rs
          Lens.^? listProjectPoliciesResponse_nextToken
          Prelude.. Lens._Just

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

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

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

instance Data.ToHeaders ListProjectPolicies where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "RekognitionService.ListProjectPolicies" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON ListProjectPolicies where
  toJSON ListProjectPolicies' {..} =
    Data.object
      ( Prelude.catMaybes
          [ ("MaxResults" Data..=) Prelude.<$> maxResults,
            ("NextToken" Data..=) Prelude.<$> nextToken,
            Prelude.Just ("ProjectArn" Data..= projectArn)
          ]
      )

instance Data.ToPath ListProjectPolicies where
  toPath = Prelude.const "/"

instance Data.ToQuery ListProjectPolicies where
  toQuery = Prelude.const Prelude.mempty

-- | /See:/ 'newListProjectPoliciesResponse' smart constructor.
data ListProjectPoliciesResponse = ListProjectPoliciesResponse'
  { -- | If the response is truncated, Amazon Rekognition returns this token that
    -- you can use in the subsequent request to retrieve the next set of
    -- project policies.
    nextToken :: Prelude.Maybe Prelude.Text,
    -- | A list of project policies attached to the project.
    projectPolicies :: Prelude.Maybe [ProjectPolicy],
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'ListProjectPoliciesResponse' 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', 'listProjectPoliciesResponse_nextToken' - If the response is truncated, Amazon Rekognition returns this token that
-- you can use in the subsequent request to retrieve the next set of
-- project policies.
--
-- 'projectPolicies', 'listProjectPoliciesResponse_projectPolicies' - A list of project policies attached to the project.
--
-- 'httpStatus', 'listProjectPoliciesResponse_httpStatus' - The response's http status code.
newListProjectPoliciesResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  ListProjectPoliciesResponse
newListProjectPoliciesResponse pHttpStatus_ =
  ListProjectPoliciesResponse'
    { nextToken =
        Prelude.Nothing,
      projectPolicies = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | If the response is truncated, Amazon Rekognition returns this token that
-- you can use in the subsequent request to retrieve the next set of
-- project policies.
listProjectPoliciesResponse_nextToken :: Lens.Lens' ListProjectPoliciesResponse (Prelude.Maybe Prelude.Text)
listProjectPoliciesResponse_nextToken = Lens.lens (\ListProjectPoliciesResponse' {nextToken} -> nextToken) (\s@ListProjectPoliciesResponse' {} a -> s {nextToken = a} :: ListProjectPoliciesResponse)

-- | A list of project policies attached to the project.
listProjectPoliciesResponse_projectPolicies :: Lens.Lens' ListProjectPoliciesResponse (Prelude.Maybe [ProjectPolicy])
listProjectPoliciesResponse_projectPolicies = Lens.lens (\ListProjectPoliciesResponse' {projectPolicies} -> projectPolicies) (\s@ListProjectPoliciesResponse' {} a -> s {projectPolicies = a} :: ListProjectPoliciesResponse) Prelude.. Lens.mapping Lens.coerced

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

instance Prelude.NFData ListProjectPoliciesResponse where
  rnf ListProjectPoliciesResponse' {..} =
    Prelude.rnf nextToken
      `Prelude.seq` Prelude.rnf projectPolicies
      `Prelude.seq` Prelude.rnf httpStatus