{-# 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.RDS.DeleteDBInstance
-- 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)
--
-- The DeleteDBInstance action deletes a previously provisioned DB
-- instance. A successful response from the web service indicates the
-- request was received correctly. When you delete a DB instance, all
-- automated backups for that instance are deleted and cannot be recovered.
-- Manual DB snapshots of the DB instance to be deleted are not deleted.
--
-- If a final DB snapshot is requested the status of the RDS instance will
-- be \"deleting\" until the DB snapshot is created. The API action
-- 'DescribeDBInstance' is used to monitor the status of this operation.
-- The action cannot be canceled or reverted once submitted.
--
-- Note that when a DB instance is in a failure state and has a status of
-- \'failed\', \'incompatible-restore\', or \'incompatible-network\', it
-- can only be deleted when the SkipFinalSnapshot parameter is set to
-- \"true\".
--
-- /See:/ <http://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_DeleteDBInstance.html AWS API Reference> for DeleteDBInstance.
module Network.AWS.RDS.DeleteDBInstance
    (
    -- * Creating a Request
      deleteDBInstance
    , DeleteDBInstance
    -- * Request Lenses
    , ddiFinalDBSnapshotIdentifier
    , ddiSkipFinalSnapshot
    , ddiDBInstanceIdentifier

    -- * Destructuring the Response
    , deleteDBInstanceResponse
    , DeleteDBInstanceResponse
    -- * Response Lenses
    , ddirsDBInstance
    , ddirsResponseStatus
    ) where

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

-- |
--
-- /See:/ 'deleteDBInstance' smart constructor.
data DeleteDBInstance = DeleteDBInstance'
    { _ddiFinalDBSnapshotIdentifier :: !(Maybe Text)
    , _ddiSkipFinalSnapshot         :: !(Maybe Bool)
    , _ddiDBInstanceIdentifier      :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DeleteDBInstance' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ddiFinalDBSnapshotIdentifier'
--
-- * 'ddiSkipFinalSnapshot'
--
-- * 'ddiDBInstanceIdentifier'
deleteDBInstance
    :: Text -- ^ 'ddiDBInstanceIdentifier'
    -> DeleteDBInstance
deleteDBInstance pDBInstanceIdentifier_ =
    DeleteDBInstance'
    { _ddiFinalDBSnapshotIdentifier = Nothing
    , _ddiSkipFinalSnapshot = Nothing
    , _ddiDBInstanceIdentifier = pDBInstanceIdentifier_
    }

-- | The DBSnapshotIdentifier of the new DBSnapshot created when
-- SkipFinalSnapshot is set to 'false'.
--
-- Specifying this parameter and also setting the SkipFinalShapshot
-- parameter to true results in an error.
--
-- Constraints:
--
-- -   Must be 1 to 255 alphanumeric characters
-- -   First character must be a letter
-- -   Cannot end with a hyphen or contain two consecutive hyphens
-- -   Cannot be specified when deleting a Read Replica.
ddiFinalDBSnapshotIdentifier :: Lens' DeleteDBInstance (Maybe Text)
ddiFinalDBSnapshotIdentifier = lens _ddiFinalDBSnapshotIdentifier (\ s a -> s{_ddiFinalDBSnapshotIdentifier = a});

-- | Determines whether a final DB snapshot is created before the DB instance
-- is deleted. If 'true' is specified, no DBSnapshot is created. If 'false'
-- is specified, a DB snapshot is created before the DB instance is
-- deleted.
--
-- Note that when a DB instance is in a failure state and has a status of
-- \'failed\', \'incompatible-restore\', or \'incompatible-network\', it
-- can only be deleted when the SkipFinalSnapshot parameter is set to
-- \"true\".
--
-- Specify 'true' when deleting a Read Replica.
--
-- The FinalDBSnapshotIdentifier parameter must be specified if
-- SkipFinalSnapshot is 'false'.
--
-- Default: 'false'
ddiSkipFinalSnapshot :: Lens' DeleteDBInstance (Maybe Bool)
ddiSkipFinalSnapshot = lens _ddiSkipFinalSnapshot (\ s a -> s{_ddiSkipFinalSnapshot = a});

-- | The DB instance identifier for the DB instance to be deleted. This
-- parameter isn\'t case-sensitive.
--
-- Constraints:
--
-- -   Must contain from 1 to 63 alphanumeric characters or hyphens
-- -   First character must be a letter
-- -   Cannot end with a hyphen or contain two consecutive hyphens
ddiDBInstanceIdentifier :: Lens' DeleteDBInstance Text
ddiDBInstanceIdentifier = lens _ddiDBInstanceIdentifier (\ s a -> s{_ddiDBInstanceIdentifier = a});

instance AWSRequest DeleteDBInstance where
        type Rs DeleteDBInstance = DeleteDBInstanceResponse
        request = postQuery rDS
        response
          = receiveXMLWrapper "DeleteDBInstanceResult"
              (\ s h x ->
                 DeleteDBInstanceResponse' <$>
                   (x .@? "DBInstance") <*> (pure (fromEnum s)))

instance ToHeaders DeleteDBInstance where
        toHeaders = const mempty

instance ToPath DeleteDBInstance where
        toPath = const "/"

instance ToQuery DeleteDBInstance where
        toQuery DeleteDBInstance'{..}
          = mconcat
              ["Action" =: ("DeleteDBInstance" :: ByteString),
               "Version" =: ("2014-10-31" :: ByteString),
               "FinalDBSnapshotIdentifier" =:
                 _ddiFinalDBSnapshotIdentifier,
               "SkipFinalSnapshot" =: _ddiSkipFinalSnapshot,
               "DBInstanceIdentifier" =: _ddiDBInstanceIdentifier]

-- | /See:/ 'deleteDBInstanceResponse' smart constructor.
data DeleteDBInstanceResponse = DeleteDBInstanceResponse'
    { _ddirsDBInstance     :: !(Maybe DBInstance)
    , _ddirsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DeleteDBInstanceResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ddirsDBInstance'
--
-- * 'ddirsResponseStatus'
deleteDBInstanceResponse
    :: Int -- ^ 'ddirsResponseStatus'
    -> DeleteDBInstanceResponse
deleteDBInstanceResponse pResponseStatus_ =
    DeleteDBInstanceResponse'
    { _ddirsDBInstance = Nothing
    , _ddirsResponseStatus = pResponseStatus_
    }

-- | Undocumented member.
ddirsDBInstance :: Lens' DeleteDBInstanceResponse (Maybe DBInstance)
ddirsDBInstance = lens _ddirsDBInstance (\ s a -> s{_ddirsDBInstance = a});

-- | The response status code.
ddirsResponseStatus :: Lens' DeleteDBInstanceResponse Int
ddirsResponseStatus = lens _ddirsResponseStatus (\ s a -> s{_ddirsResponseStatus = a});
