{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric      #-}
{-# LANGUAGE OverloadedStrings  #-}
{-# LANGUAGE RecordWildCards    #-}
{-# LANGUAGE TypeFamilies       #-}

{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-binds   #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Network.AWS.IAM.GetContextKeysForCustomPolicy
-- Copyright   : (c) 2013-2015 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Gets a list of all of the context keys referenced in 'Condition'
-- elements in the input policies. The policies are supplied as a list of
-- one or more strings. To get the context keys from policies associated
-- with an IAM user, group, or role, use GetContextKeysForPrincipalPolicy.
--
-- Context keys are variables maintained by AWS and its services that
-- provide details about the context of an API query request, and can be
-- evaluated by using the 'Condition' element of an IAM policy. Use
-- GetContextKeysForCustomPolicy to understand what key names and values
-- you must supply when you call SimulateCustomPolicy. Note that all
-- parameters are shown in unencoded form here for clarity, but must be URL
-- encoded to be included as a part of a real HTML request.
--
-- /See:/ <http://docs.aws.amazon.com/IAM/latest/APIReference/API_GetContextKeysForCustomPolicy.html AWS API Reference> for GetContextKeysForCustomPolicy.
module Network.AWS.IAM.GetContextKeysForCustomPolicy
    (
    -- * Creating a Request
      getContextKeysForCustomPolicy
    , GetContextKeysForCustomPolicy
    -- * Request Lenses
    , gckfcpPolicyInputList

    -- * Destructuring the Response
    , getContextKeysForPolicyResponse
    , GetContextKeysForPolicyResponse
    -- * Response Lenses
    , gckfpContextKeyNames
    ) where

import           Network.AWS.IAM.Types
import           Network.AWS.IAM.Types.Product
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'getContextKeysForCustomPolicy' smart constructor.
newtype GetContextKeysForCustomPolicy = GetContextKeysForCustomPolicy'
    { _gckfcpPolicyInputList :: [Text]
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetContextKeysForCustomPolicy' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gckfcpPolicyInputList'
getContextKeysForCustomPolicy
    :: GetContextKeysForCustomPolicy
getContextKeysForCustomPolicy =
    GetContextKeysForCustomPolicy'
    { _gckfcpPolicyInputList = mempty
    }

-- | A list of policies for which you want list of context keys used in
-- 'Condition' elements.
gckfcpPolicyInputList :: Lens' GetContextKeysForCustomPolicy [Text]
gckfcpPolicyInputList = lens _gckfcpPolicyInputList (\ s a -> s{_gckfcpPolicyInputList = a}) . _Coerce;

instance AWSRequest GetContextKeysForCustomPolicy
         where
        type Rs GetContextKeysForCustomPolicy =
             GetContextKeysForPolicyResponse
        request = postQuery iAM
        response
          = receiveXMLWrapper
              "GetContextKeysForCustomPolicyResult"
              (\ s h x -> parseXML x)

instance ToHeaders GetContextKeysForCustomPolicy
         where
        toHeaders = const mempty

instance ToPath GetContextKeysForCustomPolicy where
        toPath = const "/"

instance ToQuery GetContextKeysForCustomPolicy where
        toQuery GetContextKeysForCustomPolicy'{..}
          = mconcat
              ["Action" =:
                 ("GetContextKeysForCustomPolicy" :: ByteString),
               "Version" =: ("2010-05-08" :: ByteString),
               "PolicyInputList" =:
                 toQueryList "member" _gckfcpPolicyInputList]
