{-# 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.EC2.DescribeKeyPairs
-- 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)
--
-- Describes one or more of your key pairs.
--
-- For more information about key pairs, see <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html Key Pairs> in the /Amazon Elastic Compute Cloud User Guide/.
module Network.AWS.EC2.DescribeKeyPairs
    (
    -- * Creating a Request
      describeKeyPairs
    , DescribeKeyPairs
    -- * Request Lenses
    , dkpsFilters
    , dkpsKeyNames
    , dkpsDryRun

    -- * Destructuring the Response
    , describeKeyPairsResponse
    , DescribeKeyPairsResponse
    -- * Response Lenses
    , dkprsKeyPairs
    , dkprsResponseStatus
    ) where

import           Network.AWS.EC2.Types
import           Network.AWS.EC2.Types.Product
import           Network.AWS.Lens
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | Contains the parameters for DescribeKeyPairs.
--
-- /See:/ 'describeKeyPairs' smart constructor.
data DescribeKeyPairs = DescribeKeyPairs'
    { _dkpsFilters  :: !(Maybe [Filter])
    , _dkpsKeyNames :: !(Maybe [Text])
    , _dkpsDryRun   :: !(Maybe Bool)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeKeyPairs' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dkpsFilters'
--
-- * 'dkpsKeyNames'
--
-- * 'dkpsDryRun'
describeKeyPairs
    :: DescribeKeyPairs
describeKeyPairs =
    DescribeKeyPairs'
    { _dkpsFilters = Nothing
    , _dkpsKeyNames = Nothing
    , _dkpsDryRun = Nothing
    }

-- | One or more filters.
--
-- -   'fingerprint' - The fingerprint of the key pair.
--
-- -   'key-name' - The name of the key pair.
--
dkpsFilters :: Lens' DescribeKeyPairs [Filter]
dkpsFilters = lens _dkpsFilters (\ s a -> s{_dkpsFilters = a}) . _Default . _Coerce;

-- | One or more key pair names.
--
-- Default: Describes all your key pairs.
dkpsKeyNames :: Lens' DescribeKeyPairs [Text]
dkpsKeyNames = lens _dkpsKeyNames (\ s a -> s{_dkpsKeyNames = a}) . _Default . _Coerce;

-- | Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is 'DryRunOperation'. Otherwise, it is 'UnauthorizedOperation'.
dkpsDryRun :: Lens' DescribeKeyPairs (Maybe Bool)
dkpsDryRun = lens _dkpsDryRun (\ s a -> s{_dkpsDryRun = a});

instance AWSRequest DescribeKeyPairs where
        type Rs DescribeKeyPairs = DescribeKeyPairsResponse
        request = postQuery ec2
        response
          = receiveXML
              (\ s h x ->
                 DescribeKeyPairsResponse' <$>
                   (x .@? "keySet" .!@ mempty >>=
                      may (parseXMLList "item"))
                     <*> (pure (fromEnum s)))

instance Hashable DescribeKeyPairs

instance NFData DescribeKeyPairs

instance ToHeaders DescribeKeyPairs where
        toHeaders = const mempty

instance ToPath DescribeKeyPairs where
        toPath = const "/"

instance ToQuery DescribeKeyPairs where
        toQuery DescribeKeyPairs'{..}
          = mconcat
              ["Action" =: ("DescribeKeyPairs" :: ByteString),
               "Version" =: ("2016-04-01" :: ByteString),
               toQuery (toQueryList "Filter" <$> _dkpsFilters),
               toQuery (toQueryList "KeyName" <$> _dkpsKeyNames),
               "DryRun" =: _dkpsDryRun]

-- | Contains the output of DescribeKeyPairs.
--
-- /See:/ 'describeKeyPairsResponse' smart constructor.
data DescribeKeyPairsResponse = DescribeKeyPairsResponse'
    { _dkprsKeyPairs       :: !(Maybe [KeyPairInfo])
    , _dkprsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeKeyPairsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dkprsKeyPairs'
--
-- * 'dkprsResponseStatus'
describeKeyPairsResponse
    :: Int -- ^ 'dkprsResponseStatus'
    -> DescribeKeyPairsResponse
describeKeyPairsResponse pResponseStatus_ =
    DescribeKeyPairsResponse'
    { _dkprsKeyPairs = Nothing
    , _dkprsResponseStatus = pResponseStatus_
    }

-- | Information about one or more key pairs.
dkprsKeyPairs :: Lens' DescribeKeyPairsResponse [KeyPairInfo]
dkprsKeyPairs = lens _dkprsKeyPairs (\ s a -> s{_dkprsKeyPairs = a}) . _Default . _Coerce;

-- | The response status code.
dkprsResponseStatus :: Lens' DescribeKeyPairsResponse Int
dkprsResponseStatus = lens _dkprsResponseStatus (\ s a -> s{_dkprsResponseStatus = a});

instance NFData DescribeKeyPairsResponse