{-# 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.WAF.ListRules
-- Copyright   : (c) 2013-2016 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)
--
-- Returns an array of < RuleSummary> objects.
module Network.AWS.WAF.ListRules
    (
    -- * Creating a Request
      listRules
    , ListRules
    -- * Request Lenses
    , lrNextMarker
    , lrLimit

    -- * Destructuring the Response
    , listRulesResponse
    , ListRulesResponse
    -- * Response Lenses
    , lrrsRules
    , lrrsNextMarker
    , lrrsResponseStatus
    ) where

import           Network.AWS.Lens
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response
import           Network.AWS.WAF.Types
import           Network.AWS.WAF.Types.Product

-- | /See:/ 'listRules' smart constructor.
data ListRules = ListRules'
    { _lrNextMarker :: !(Maybe Text)
    , _lrLimit      :: !Nat
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListRules' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'lrNextMarker'
--
-- * 'lrLimit'
listRules
    :: Natural -- ^ 'lrLimit'
    -> ListRules
listRules pLimit_ =
    ListRules'
    { _lrNextMarker = Nothing
    , _lrLimit = _Nat # pLimit_
    }

-- | If you specify a value for 'Limit' and you have more 'Rules' than the value of 'Limit', AWS WAF returns a 'NextMarker' value in the response that allows you to list another group of 'Rules'. For the second and subsequent 'ListRules' requests, specify the value of 'NextMarker' from the previous response to get information about another batch of 'Rules'.
lrNextMarker :: Lens' ListRules (Maybe Text)
lrNextMarker = lens _lrNextMarker (\ s a -> s{_lrNextMarker = a});

-- | Specifies the number of 'Rules' that you want AWS WAF to return for this request. If you have more 'Rules' than the number that you specify for 'Limit', the response includes a 'NextMarker' value that you can use to get another batch of 'Rules'.
lrLimit :: Lens' ListRules Natural
lrLimit = lens _lrLimit (\ s a -> s{_lrLimit = a}) . _Nat;

instance AWSRequest ListRules where
        type Rs ListRules = ListRulesResponse
        request = postJSON waf
        response
          = receiveJSON
              (\ s h x ->
                 ListRulesResponse' <$>
                   (x .?> "Rules" .!@ mempty) <*> (x .?> "NextMarker")
                     <*> (pure (fromEnum s)))

instance Hashable ListRules

instance NFData ListRules

instance ToHeaders ListRules where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("AWSWAF_20150824.ListRules" :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON ListRules where
        toJSON ListRules'{..}
          = object
              (catMaybes
                 [("NextMarker" .=) <$> _lrNextMarker,
                  Just ("Limit" .= _lrLimit)])

instance ToPath ListRules where
        toPath = const "/"

instance ToQuery ListRules where
        toQuery = const mempty

-- | /See:/ 'listRulesResponse' smart constructor.
data ListRulesResponse = ListRulesResponse'
    { _lrrsRules          :: !(Maybe [RuleSummary])
    , _lrrsNextMarker     :: !(Maybe Text)
    , _lrrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListRulesResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'lrrsRules'
--
-- * 'lrrsNextMarker'
--
-- * 'lrrsResponseStatus'
listRulesResponse
    :: Int -- ^ 'lrrsResponseStatus'
    -> ListRulesResponse
listRulesResponse pResponseStatus_ =
    ListRulesResponse'
    { _lrrsRules = Nothing
    , _lrrsNextMarker = Nothing
    , _lrrsResponseStatus = pResponseStatus_
    }

-- | An array of < RuleSummary> objects.
lrrsRules :: Lens' ListRulesResponse [RuleSummary]
lrrsRules = lens _lrrsRules (\ s a -> s{_lrrsRules = a}) . _Default . _Coerce;

-- | If you have more 'Rules' than the number that you specified for 'Limit' in the request, the response includes a 'NextMarker' value. To list more 'Rules', submit another 'ListRules' request, and specify the 'NextMarker' value from the response in the 'NextMarker' value in the next request.
lrrsNextMarker :: Lens' ListRulesResponse (Maybe Text)
lrrsNextMarker = lens _lrrsNextMarker (\ s a -> s{_lrrsNextMarker = a});

-- | The response status code.
lrrsResponseStatus :: Lens' ListRulesResponse Int
lrrsResponseStatus = lens _lrrsResponseStatus (\ s a -> s{_lrrsResponseStatus = a});

instance NFData ListRulesResponse