{-# LANGUAGE DataKinds                   #-}
{-# LANGUAGE DeriveGeneric               #-}
{-# LANGUAGE FlexibleInstances           #-}
{-# LANGUAGE GeneralizedNewtypeDeriving  #-}
{-# LANGUAGE LambdaCase                  #-}
{-# LANGUAGE NoImplicitPrelude           #-}
{-# LANGUAGE OverloadedStrings           #-}
{-# LANGUAGE RecordWildCards             #-}
{-# LANGUAGE TypeFamilies                #-}

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

-- Module      : Network.AWS.Redshift.DeleteClusterSnapshot
-- Copyright   : (c) 2013-2014 Brendan Hay <brendan.g.hay@gmail.com>
-- License     : This Source Code Form is subject to the terms of
--               the Mozilla Public License, v. 2.0.
--               A copy of the MPL can be found in the LICENSE file or
--               you can obtain it at http://mozilla.org/MPL/2.0/.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : experimental
-- Portability : non-portable (GHC extensions)
--
-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- | Deletes the specified manual snapshot. The snapshot must be in the 'available'
-- state, with no other users authorized to access the snapshot.
--
-- Unlike automated snapshots, manual snapshots are retained even after you
-- delete your cluster. Amazon Redshift does not delete your manual snapshots.
-- You must delete manual snapshot explicitly to avoid getting charged. If other
-- accounts are authorized to access the snapshot, you must revoke all of the
-- authorizations before you can delete the snapshot.
--
-- <http://docs.aws.amazon.com/redshift/latest/APIReference/API_DeleteClusterSnapshot.html>
module Network.AWS.Redshift.DeleteClusterSnapshot
    (
    -- * Request
      DeleteClusterSnapshot
    -- ** Request constructor
    , deleteClusterSnapshot
    -- ** Request lenses
    , dcsSnapshotClusterIdentifier
    , dcsSnapshotIdentifier

    -- * Response
    , DeleteClusterSnapshotResponse
    -- ** Response constructor
    , deleteClusterSnapshotResponse
    -- ** Response lenses
    , dcsrSnapshot
    ) where

import Network.AWS.Prelude
import Network.AWS.Request.Query
import Network.AWS.Redshift.Types
import qualified GHC.Exts

data DeleteClusterSnapshot = DeleteClusterSnapshot
    { _dcsSnapshotClusterIdentifier :: Maybe Text
    , _dcsSnapshotIdentifier        :: Text
    } deriving (Eq, Ord, Show)

-- | 'DeleteClusterSnapshot' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'dcsSnapshotClusterIdentifier' @::@ 'Maybe' 'Text'
--
-- * 'dcsSnapshotIdentifier' @::@ 'Text'
--
deleteClusterSnapshot :: Text -- ^ 'dcsSnapshotIdentifier'
                      -> DeleteClusterSnapshot
deleteClusterSnapshot p1 = DeleteClusterSnapshot
    { _dcsSnapshotIdentifier        = p1
    , _dcsSnapshotClusterIdentifier = Nothing
    }

-- | The unique identifier of the cluster the snapshot was created from. This
-- parameter is required if your IAM user has a policy containing a snapshot
-- resource element that specifies anything other than * for the cluster name.
--
-- Constraints: Must be the name of valid cluster.
dcsSnapshotClusterIdentifier :: Lens' DeleteClusterSnapshot (Maybe Text)
dcsSnapshotClusterIdentifier =
    lens _dcsSnapshotClusterIdentifier
        (\s a -> s { _dcsSnapshotClusterIdentifier = a })

-- | The unique identifier of the manual snapshot to be deleted.
--
-- Constraints: Must be the name of an existing snapshot that is in the 'available' state.
dcsSnapshotIdentifier :: Lens' DeleteClusterSnapshot Text
dcsSnapshotIdentifier =
    lens _dcsSnapshotIdentifier (\s a -> s { _dcsSnapshotIdentifier = a })

newtype DeleteClusterSnapshotResponse = DeleteClusterSnapshotResponse
    { _dcsrSnapshot :: Maybe Snapshot
    } deriving (Eq, Show)

-- | 'DeleteClusterSnapshotResponse' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'dcsrSnapshot' @::@ 'Maybe' 'Snapshot'
--
deleteClusterSnapshotResponse :: DeleteClusterSnapshotResponse
deleteClusterSnapshotResponse = DeleteClusterSnapshotResponse
    { _dcsrSnapshot = Nothing
    }

dcsrSnapshot :: Lens' DeleteClusterSnapshotResponse (Maybe Snapshot)
dcsrSnapshot = lens _dcsrSnapshot (\s a -> s { _dcsrSnapshot = a })

instance ToPath DeleteClusterSnapshot where
    toPath = const "/"

instance ToQuery DeleteClusterSnapshot where
    toQuery DeleteClusterSnapshot{..} = mconcat
        [ "SnapshotClusterIdentifier" =? _dcsSnapshotClusterIdentifier
        , "SnapshotIdentifier"        =? _dcsSnapshotIdentifier
        ]

instance ToHeaders DeleteClusterSnapshot

instance AWSRequest DeleteClusterSnapshot where
    type Sv DeleteClusterSnapshot = Redshift
    type Rs DeleteClusterSnapshot = DeleteClusterSnapshotResponse

    request  = post "DeleteClusterSnapshot"
    response = xmlResponse

instance FromXML DeleteClusterSnapshotResponse where
    parseXML = withElement "DeleteClusterSnapshotResult" $ \x -> DeleteClusterSnapshotResponse
        <$> x .@? "Snapshot"