{-# 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.CloudFront.GetResponseHeadersPolicy
-- 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 response headers policy, including metadata (the policy\'s
-- identifier and the date and time when the policy was last modified).
--
-- To get a response headers policy, you must provide the policy\'s
-- identifier. If the response headers policy is attached to a
-- distribution\'s cache behavior, you can get the policy\'s identifier
-- using @ListDistributions@ or @GetDistribution@. If the response headers
-- policy is not attached to a cache behavior, you can get the identifier
-- using @ListResponseHeadersPolicies@.
module Amazonka.CloudFront.GetResponseHeadersPolicy
  ( -- * Creating a Request
    GetResponseHeadersPolicy (..),
    newGetResponseHeadersPolicy,

    -- * Request Lenses
    getResponseHeadersPolicy_id,

    -- * Destructuring the Response
    GetResponseHeadersPolicyResponse (..),
    newGetResponseHeadersPolicyResponse,

    -- * Response Lenses
    getResponseHeadersPolicyResponse_eTag,
    getResponseHeadersPolicyResponse_responseHeadersPolicy,
    getResponseHeadersPolicyResponse_httpStatus,
  )
where

import Amazonka.CloudFront.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:/ 'newGetResponseHeadersPolicy' smart constructor.
data GetResponseHeadersPolicy = GetResponseHeadersPolicy'
  { -- | The identifier for the response headers policy.
    --
    -- If the response headers policy is attached to a distribution\'s cache
    -- behavior, you can get the policy\'s identifier using @ListDistributions@
    -- or @GetDistribution@. If the response headers policy is not attached to
    -- a cache behavior, you can get the identifier using
    -- @ListResponseHeadersPolicies@.
    id :: Prelude.Text
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetResponseHeadersPolicy' 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:
--
-- 'id', 'getResponseHeadersPolicy_id' - The identifier for the response headers policy.
--
-- If the response headers policy is attached to a distribution\'s cache
-- behavior, you can get the policy\'s identifier using @ListDistributions@
-- or @GetDistribution@. If the response headers policy is not attached to
-- a cache behavior, you can get the identifier using
-- @ListResponseHeadersPolicies@.
newGetResponseHeadersPolicy ::
  -- | 'id'
  Prelude.Text ->
  GetResponseHeadersPolicy
newGetResponseHeadersPolicy pId_ =
  GetResponseHeadersPolicy' {id = pId_}

-- | The identifier for the response headers policy.
--
-- If the response headers policy is attached to a distribution\'s cache
-- behavior, you can get the policy\'s identifier using @ListDistributions@
-- or @GetDistribution@. If the response headers policy is not attached to
-- a cache behavior, you can get the identifier using
-- @ListResponseHeadersPolicies@.
getResponseHeadersPolicy_id :: Lens.Lens' GetResponseHeadersPolicy Prelude.Text
getResponseHeadersPolicy_id = Lens.lens (\GetResponseHeadersPolicy' {id} -> id) (\s@GetResponseHeadersPolicy' {} a -> s {id = a} :: GetResponseHeadersPolicy)

instance Core.AWSRequest GetResponseHeadersPolicy where
  type
    AWSResponse GetResponseHeadersPolicy =
      GetResponseHeadersPolicyResponse
  request overrides =
    Request.get (overrides defaultService)
  response =
    Response.receiveXML
      ( \s h x ->
          GetResponseHeadersPolicyResponse'
            Prelude.<$> (h Data..#? "ETag")
            Prelude.<*> (Data.parseXML x)
            Prelude.<*> (Prelude.pure (Prelude.fromEnum s))
      )

instance Prelude.Hashable GetResponseHeadersPolicy where
  hashWithSalt _salt GetResponseHeadersPolicy' {..} =
    _salt `Prelude.hashWithSalt` id

instance Prelude.NFData GetResponseHeadersPolicy where
  rnf GetResponseHeadersPolicy' {..} = Prelude.rnf id

instance Data.ToHeaders GetResponseHeadersPolicy where
  toHeaders = Prelude.const Prelude.mempty

instance Data.ToPath GetResponseHeadersPolicy where
  toPath GetResponseHeadersPolicy' {..} =
    Prelude.mconcat
      [ "/2020-05-31/response-headers-policy/",
        Data.toBS id
      ]

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

-- | /See:/ 'newGetResponseHeadersPolicyResponse' smart constructor.
data GetResponseHeadersPolicyResponse = GetResponseHeadersPolicyResponse'
  { -- | The version identifier for the current version of the response headers
    -- policy.
    eTag :: Prelude.Maybe Prelude.Text,
    -- | Contains a response headers policy.
    responseHeadersPolicy :: Prelude.Maybe ResponseHeadersPolicy,
    -- | The response's http status code.
    httpStatus :: Prelude.Int
  }
  deriving (Prelude.Eq, Prelude.Read, Prelude.Show, Prelude.Generic)

-- |
-- Create a value of 'GetResponseHeadersPolicyResponse' 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:
--
-- 'eTag', 'getResponseHeadersPolicyResponse_eTag' - The version identifier for the current version of the response headers
-- policy.
--
-- 'responseHeadersPolicy', 'getResponseHeadersPolicyResponse_responseHeadersPolicy' - Contains a response headers policy.
--
-- 'httpStatus', 'getResponseHeadersPolicyResponse_httpStatus' - The response's http status code.
newGetResponseHeadersPolicyResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  GetResponseHeadersPolicyResponse
newGetResponseHeadersPolicyResponse pHttpStatus_ =
  GetResponseHeadersPolicyResponse'
    { eTag =
        Prelude.Nothing,
      responseHeadersPolicy = Prelude.Nothing,
      httpStatus = pHttpStatus_
    }

-- | The version identifier for the current version of the response headers
-- policy.
getResponseHeadersPolicyResponse_eTag :: Lens.Lens' GetResponseHeadersPolicyResponse (Prelude.Maybe Prelude.Text)
getResponseHeadersPolicyResponse_eTag = Lens.lens (\GetResponseHeadersPolicyResponse' {eTag} -> eTag) (\s@GetResponseHeadersPolicyResponse' {} a -> s {eTag = a} :: GetResponseHeadersPolicyResponse)

-- | Contains a response headers policy.
getResponseHeadersPolicyResponse_responseHeadersPolicy :: Lens.Lens' GetResponseHeadersPolicyResponse (Prelude.Maybe ResponseHeadersPolicy)
getResponseHeadersPolicyResponse_responseHeadersPolicy = Lens.lens (\GetResponseHeadersPolicyResponse' {responseHeadersPolicy} -> responseHeadersPolicy) (\s@GetResponseHeadersPolicyResponse' {} a -> s {responseHeadersPolicy = a} :: GetResponseHeadersPolicyResponse)

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

instance
  Prelude.NFData
    GetResponseHeadersPolicyResponse
  where
  rnf GetResponseHeadersPolicyResponse' {..} =
    Prelude.rnf eTag
      `Prelude.seq` Prelude.rnf responseHeadersPolicy
      `Prelude.seq` Prelude.rnf httpStatus