{-# 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.DeleteRule
-- 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)
--
-- Permanently deletes a < Rule>. You can\'t delete a 'Rule' if it\'s still
-- used in any 'WebACL' objects or if it still includes any predicates,
-- such as 'ByteMatchSet' objects.
--
-- If you just want to remove a 'Rule' from a 'WebACL', use
-- < UpdateWebACL>.
--
-- To permanently delete a 'Rule' from AWS WAF, perform the following
-- steps:
--
-- 1.  Update the 'Rule' to remove predicates, if any. For more
--     information, see < UpdateRule>.
-- 2.  Use < GetChangeToken> to get the change token that you provide in
--     the 'ChangeToken' parameter of a 'DeleteRule' request.
-- 3.  Submit a 'DeleteRule' request.
module Network.AWS.WAF.DeleteRule
    (
    -- * Creating a Request
      deleteRule
    , DeleteRule
    -- * Request Lenses
    , drRuleId
    , drChangeToken

    -- * Destructuring the Response
    , deleteRuleResponse
    , DeleteRuleResponse
    -- * Response Lenses
    , drrsChangeToken
    , drrsResponseStatus
    ) 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:/ 'deleteRule' smart constructor.
data DeleteRule = DeleteRule'
    { _drRuleId      :: !Text
    , _drChangeToken :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DeleteRule' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'drRuleId'
--
-- * 'drChangeToken'
deleteRule
    :: Text -- ^ 'drRuleId'
    -> Text -- ^ 'drChangeToken'
    -> DeleteRule
deleteRule pRuleId_ pChangeToken_ =
    DeleteRule'
    { _drRuleId = pRuleId_
    , _drChangeToken = pChangeToken_
    }

-- | The 'RuleId' of the < Rule> that you want to delete. 'RuleId' is
-- returned by < CreateRule> and by < ListRules>.
drRuleId :: Lens' DeleteRule Text
drRuleId = lens _drRuleId (\ s a -> s{_drRuleId = a});

-- | The value returned by the most recent call to < GetChangeToken>.
drChangeToken :: Lens' DeleteRule Text
drChangeToken = lens _drChangeToken (\ s a -> s{_drChangeToken = a});

instance AWSRequest DeleteRule where
        type Rs DeleteRule = DeleteRuleResponse
        request = postJSON waf
        response
          = receiveJSON
              (\ s h x ->
                 DeleteRuleResponse' <$>
                   (x .?> "ChangeToken") <*> (pure (fromEnum s)))

instance Hashable DeleteRule

instance NFData DeleteRule

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

instance ToJSON DeleteRule where
        toJSON DeleteRule'{..}
          = object
              (catMaybes
                 [Just ("RuleId" .= _drRuleId),
                  Just ("ChangeToken" .= _drChangeToken)])

instance ToPath DeleteRule where
        toPath = const "/"

instance ToQuery DeleteRule where
        toQuery = const mempty

-- | /See:/ 'deleteRuleResponse' smart constructor.
data DeleteRuleResponse = DeleteRuleResponse'
    { _drrsChangeToken    :: !(Maybe Text)
    , _drrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DeleteRuleResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'drrsChangeToken'
--
-- * 'drrsResponseStatus'
deleteRuleResponse
    :: Int -- ^ 'drrsResponseStatus'
    -> DeleteRuleResponse
deleteRuleResponse pResponseStatus_ =
    DeleteRuleResponse'
    { _drrsChangeToken = Nothing
    , _drrsResponseStatus = pResponseStatus_
    }

-- | The 'ChangeToken' that you used to submit the 'DeleteRule' request. You
-- can also use this value to query the status of the request. For more
-- information, see < GetChangeTokenStatus>.
drrsChangeToken :: Lens' DeleteRuleResponse (Maybe Text)
drrsChangeToken = lens _drrsChangeToken (\ s a -> s{_drrsChangeToken = a});

-- | The response status code.
drrsResponseStatus :: Lens' DeleteRuleResponse Int
drrsResponseStatus = lens _drrsResponseStatus (\ s a -> s{_drrsResponseStatus = a});

instance NFData DeleteRuleResponse