{-# 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.DescribeSnapshotAttribute
-- 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 the specified attribute of the specified snapshot. You can specify only one attribute at a time.
--
-- For more information about EBS snapshots, see <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html Amazon EBS Snapshots> in the /Amazon Elastic Compute Cloud User Guide/.
module Network.AWS.EC2.DescribeSnapshotAttribute
    (
    -- * Creating a Request
      describeSnapshotAttribute
    , DescribeSnapshotAttribute
    -- * Request Lenses
    , dsaDryRun
    , dsaSnapshotId
    , dsaAttribute

    -- * Destructuring the Response
    , describeSnapshotAttributeResponse
    , DescribeSnapshotAttributeResponse
    -- * Response Lenses
    , dsarsCreateVolumePermissions
    , dsarsProductCodes
    , dsarsSnapshotId
    , dsarsResponseStatus
    ) 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 DescribeSnapshotAttribute.
--
-- /See:/ 'describeSnapshotAttribute' smart constructor.
data DescribeSnapshotAttribute = DescribeSnapshotAttribute'
    { _dsaDryRun     :: !(Maybe Bool)
    , _dsaSnapshotId :: !Text
    , _dsaAttribute  :: !SnapshotAttributeName
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeSnapshotAttribute' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsaDryRun'
--
-- * 'dsaSnapshotId'
--
-- * 'dsaAttribute'
describeSnapshotAttribute
    :: Text -- ^ 'dsaSnapshotId'
    -> SnapshotAttributeName -- ^ 'dsaAttribute'
    -> DescribeSnapshotAttribute
describeSnapshotAttribute pSnapshotId_ pAttribute_ =
    DescribeSnapshotAttribute'
    { _dsaDryRun = Nothing
    , _dsaSnapshotId = pSnapshotId_
    , _dsaAttribute = pAttribute_
    }

-- | 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'.
dsaDryRun :: Lens' DescribeSnapshotAttribute (Maybe Bool)
dsaDryRun = lens _dsaDryRun (\ s a -> s{_dsaDryRun = a});

-- | The ID of the EBS snapshot.
dsaSnapshotId :: Lens' DescribeSnapshotAttribute Text
dsaSnapshotId = lens _dsaSnapshotId (\ s a -> s{_dsaSnapshotId = a});

-- | The snapshot attribute you would like to view.
dsaAttribute :: Lens' DescribeSnapshotAttribute SnapshotAttributeName
dsaAttribute = lens _dsaAttribute (\ s a -> s{_dsaAttribute = a});

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

instance Hashable DescribeSnapshotAttribute

instance NFData DescribeSnapshotAttribute

instance ToHeaders DescribeSnapshotAttribute where
        toHeaders = const mempty

instance ToPath DescribeSnapshotAttribute where
        toPath = const "/"

instance ToQuery DescribeSnapshotAttribute where
        toQuery DescribeSnapshotAttribute'{..}
          = mconcat
              ["Action" =:
                 ("DescribeSnapshotAttribute" :: ByteString),
               "Version" =: ("2016-04-01" :: ByteString),
               "DryRun" =: _dsaDryRun,
               "SnapshotId" =: _dsaSnapshotId,
               "Attribute" =: _dsaAttribute]

-- | Contains the output of DescribeSnapshotAttribute.
--
-- /See:/ 'describeSnapshotAttributeResponse' smart constructor.
data DescribeSnapshotAttributeResponse = DescribeSnapshotAttributeResponse'
    { _dsarsCreateVolumePermissions :: !(Maybe [CreateVolumePermission])
    , _dsarsProductCodes            :: !(Maybe [ProductCode])
    , _dsarsSnapshotId              :: !(Maybe Text)
    , _dsarsResponseStatus          :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeSnapshotAttributeResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsarsCreateVolumePermissions'
--
-- * 'dsarsProductCodes'
--
-- * 'dsarsSnapshotId'
--
-- * 'dsarsResponseStatus'
describeSnapshotAttributeResponse
    :: Int -- ^ 'dsarsResponseStatus'
    -> DescribeSnapshotAttributeResponse
describeSnapshotAttributeResponse pResponseStatus_ =
    DescribeSnapshotAttributeResponse'
    { _dsarsCreateVolumePermissions = Nothing
    , _dsarsProductCodes = Nothing
    , _dsarsSnapshotId = Nothing
    , _dsarsResponseStatus = pResponseStatus_
    }

-- | A list of permissions for creating volumes from the snapshot.
dsarsCreateVolumePermissions :: Lens' DescribeSnapshotAttributeResponse [CreateVolumePermission]
dsarsCreateVolumePermissions = lens _dsarsCreateVolumePermissions (\ s a -> s{_dsarsCreateVolumePermissions = a}) . _Default . _Coerce;

-- | A list of product codes.
dsarsProductCodes :: Lens' DescribeSnapshotAttributeResponse [ProductCode]
dsarsProductCodes = lens _dsarsProductCodes (\ s a -> s{_dsarsProductCodes = a}) . _Default . _Coerce;

-- | The ID of the EBS snapshot.
dsarsSnapshotId :: Lens' DescribeSnapshotAttributeResponse (Maybe Text)
dsarsSnapshotId = lens _dsarsSnapshotId (\ s a -> s{_dsarsSnapshotId = a});

-- | The response status code.
dsarsResponseStatus :: Lens' DescribeSnapshotAttributeResponse Int
dsarsResponseStatus = lens _dsarsResponseStatus (\ s a -> s{_dsarsResponseStatus = a});

instance NFData DescribeSnapshotAttributeResponse