{-# 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.WAFV2.GetPermissionPolicy
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns the IAM policy that is attached to the specified rule group.
--
-- You must be the owner of the rule group to perform this operation.
module Amazonka.WAFV2.GetPermissionPolicy
  ( -- * Creating a Request
    GetPermissionPolicy (..),
    newGetPermissionPolicy,

    -- * Request Lenses
    getPermissionPolicy_resourceArn,

    -- * Destructuring the Response
    GetPermissionPolicyResponse (..),
    newGetPermissionPolicyResponse,

    -- * Response Lenses
    getPermissionPolicyResponse_policy,
    getPermissionPolicyResponse_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 qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response
import Amazonka.WAFV2.Types

-- | /See:/ 'newGetPermissionPolicy' smart constructor.
data GetPermissionPolicy = GetPermissionPolicy'
  { -- | The Amazon Resource Name (ARN) of the rule group for which you want to
    -- get the policy.
    resourceArn :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetPermissionPolicy' 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:
--
-- 'resourceArn', 'getPermissionPolicy_resourceArn' - The Amazon Resource Name (ARN) of the rule group for which you want to
-- get the policy.
newGetPermissionPolicy ::
  -- | 'resourceArn'
  Prelude.Text ->
  GetPermissionPolicy
newGetPermissionPolicy pResourceArn_ =
  GetPermissionPolicy' {resourceArn = pResourceArn_}

-- | The Amazon Resource Name (ARN) of the rule group for which you want to
-- get the policy.
getPermissionPolicy_resourceArn :: Lens.Lens' GetPermissionPolicy Prelude.Text
getPermissionPolicy_resourceArn = Lens.lens (\GetPermissionPolicy' {resourceArn} -> resourceArn) (\s@GetPermissionPolicy' {} a -> s {resourceArn = a} :: GetPermissionPolicy)

instance Core.AWSRequest GetPermissionPolicy where
  type
    AWSResponse GetPermissionPolicy =
      GetPermissionPolicyResponse
  request overrides =
    Request.postJSON (overrides defaultService)
  response =
    Response.receiveJSON
      ( \s h x ->
          GetPermissionPolicyResponse'
            Prelude.<$> (x Data..?> "Policy")
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable GetPermissionPolicy where
  hashWithSalt _salt GetPermissionPolicy' {..} =
    _salt `Prelude.hashWithSalt` resourceArn

instance Prelude.NFData GetPermissionPolicy where
  rnf GetPermissionPolicy' {..} =
    Prelude.rnf resourceArn

instance Data.ToHeaders GetPermissionPolicy where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "AWSWAF_20190729.GetPermissionPolicy" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.1" ::
                          Prelude.ByteString
                      )
          ]
      )

instance Data.ToJSON GetPermissionPolicy where
  toJSON GetPermissionPolicy' {..} =
    Data.object
      ( Prelude.catMaybes
          [Prelude.Just ("ResourceArn" Data..= resourceArn)]
      )

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

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

-- | /See:/ 'newGetPermissionPolicyResponse' smart constructor.
data GetPermissionPolicyResponse = GetPermissionPolicyResponse'
  { -- | The IAM policy that is attached to the specified rule group.
    policy :: 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 'GetPermissionPolicyResponse' 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:
--
-- 'policy', 'getPermissionPolicyResponse_policy' - The IAM policy that is attached to the specified rule group.
--
-- 'httpStatus', 'getPermissionPolicyResponse_httpStatus' - The response's http status code.
newGetPermissionPolicyResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetPermissionPolicyResponse
newGetPermissionPolicyResponse pHttpStatus_ =
  GetPermissionPolicyResponse'
    { policy =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The IAM policy that is attached to the specified rule group.
getPermissionPolicyResponse_policy :: Lens.Lens' GetPermissionPolicyResponse (Prelude.Maybe Prelude.Text)
getPermissionPolicyResponse_policy = Lens.lens (\GetPermissionPolicyResponse' {policy} -> policy) (\s@GetPermissionPolicyResponse' {} a -> s {policy = a} :: GetPermissionPolicyResponse)

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

instance Prelude.NFData GetPermissionPolicyResponse where
  rnf GetPermissionPolicyResponse' {..} =
    Prelude.rnf policy
      `Prelude.seq` Prelude.rnf httpStatus