{-# 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.NetworkFirewall.DescribeResourcePolicy
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Retrieves a resource policy that you created in a PutResourcePolicy
-- request.
module Amazonka.NetworkFirewall.DescribeResourcePolicy
  ( -- * Creating a Request
    DescribeResourcePolicy (..),
    newDescribeResourcePolicy,

    -- * Request Lenses
    describeResourcePolicy_resourceArn,

    -- * Destructuring the Response
    DescribeResourcePolicyResponse (..),
    newDescribeResourcePolicyResponse,

    -- * Response Lenses
    describeResourcePolicyResponse_policy,
    describeResourcePolicyResponse_httpStatus,
  )
where

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

-- | /See:/ 'newDescribeResourcePolicy' smart constructor.
data DescribeResourcePolicy = DescribeResourcePolicy'
  { -- | The Amazon Resource Name (ARN) of the rule group or firewall policy
    -- whose resource policy you want to retrieve.
    resourceArn :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'DescribeResourcePolicy' 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', 'describeResourcePolicy_resourceArn' - The Amazon Resource Name (ARN) of the rule group or firewall policy
-- whose resource policy you want to retrieve.
newDescribeResourcePolicy ::
  -- | 'resourceArn'
  Prelude.Text ->
  DescribeResourcePolicy
newDescribeResourcePolicy pResourceArn_ =
  DescribeResourcePolicy'
    { resourceArn =
        pResourceArn_
    }

-- | The Amazon Resource Name (ARN) of the rule group or firewall policy
-- whose resource policy you want to retrieve.
describeResourcePolicy_resourceArn :: Lens.Lens' DescribeResourcePolicy Prelude.Text
describeResourcePolicy_resourceArn = Lens.lens (\DescribeResourcePolicy' {resourceArn} -> resourceArn) (\s@DescribeResourcePolicy' {} a -> s {resourceArn = a} :: DescribeResourcePolicy)

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

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

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

instance Data.ToHeaders DescribeResourcePolicy where
  toHeaders =
    Prelude.const
      ( Prelude.mconcat
          [ "X-Amz-Target"
              Data.=# ( "NetworkFirewall_20201112.DescribeResourcePolicy" ::
                          Prelude.ByteString
                      ),
            "Content-Type"
              Data.=# ( "application/x-amz-json-1.0" ::
                          Prelude.ByteString
                      )
          ]
      )

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

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

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

-- | /See:/ 'newDescribeResourcePolicyResponse' smart constructor.
data DescribeResourcePolicyResponse = DescribeResourcePolicyResponse'
  { -- | The IAM policy for the resource.
    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 'DescribeResourcePolicyResponse' 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', 'describeResourcePolicyResponse_policy' - The IAM policy for the resource.
--
-- 'httpStatus', 'describeResourcePolicyResponse_httpStatus' - The response's http status code.
newDescribeResourcePolicyResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeResourcePolicyResponse
newDescribeResourcePolicyResponse pHttpStatus_ =
  DescribeResourcePolicyResponse'
    { policy =
        Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The IAM policy for the resource.
describeResourcePolicyResponse_policy :: Lens.Lens' DescribeResourcePolicyResponse (Prelude.Maybe Prelude.Text)
describeResourcePolicyResponse_policy = Lens.lens (\DescribeResourcePolicyResponse' {policy} -> policy) (\s@DescribeResourcePolicyResponse' {} a -> s {policy = a} :: DescribeResourcePolicyResponse)

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

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