{-# 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.OpsWorks.DescribeVolumes
-- 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)
--
-- Describes an instance\'s Amazon EBS volumes.
--
-- You must specify at least one of the parameters.
--
-- __Required Permissions__: To use this action, an IAM user must have a
-- Show, Deploy, or Manage permissions level for the stack, or an attached
-- policy that explicitly grants permissions. For more information on user
-- permissions, see
-- <http://docs.aws.amazon.com/opsworks/latest/userguide/opsworks-security-users.html Managing User Permissions>.
--
-- /See:/ <http://docs.aws.amazon.com/opsworks/latest/APIReference/API_DescribeVolumes.html AWS API Reference> for DescribeVolumes.
module Network.AWS.OpsWorks.DescribeVolumes
    (
    -- * Creating a Request
      describeVolumes
    , DescribeVolumes
    -- * Request Lenses
    , dvInstanceId
    , dvVolumeIds
    , dvRAIdArrayId
    , dvStackId

    -- * Destructuring the Response
    , describeVolumesResponse
    , DescribeVolumesResponse
    -- * Response Lenses
    , dvrsVolumes
    , dvrsResponseStatus
    ) where

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

-- | /See:/ 'describeVolumes' smart constructor.
data DescribeVolumes = DescribeVolumes'
    { _dvInstanceId  :: !(Maybe Text)
    , _dvVolumeIds   :: !(Maybe [Text])
    , _dvRAIdArrayId :: !(Maybe Text)
    , _dvStackId     :: !(Maybe Text)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVolumes' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvInstanceId'
--
-- * 'dvVolumeIds'
--
-- * 'dvRAIdArrayId'
--
-- * 'dvStackId'
describeVolumes
    :: DescribeVolumes
describeVolumes =
    DescribeVolumes'
    { _dvInstanceId = Nothing
    , _dvVolumeIds = Nothing
    , _dvRAIdArrayId = Nothing
    , _dvStackId = Nothing
    }

-- | The instance ID. If you use this parameter, 'DescribeVolumes' returns
-- descriptions of the volumes associated with the specified instance.
dvInstanceId :: Lens' DescribeVolumes (Maybe Text)
dvInstanceId = lens _dvInstanceId (\ s a -> s{_dvInstanceId = a});

-- | Am array of volume IDs. If you use this parameter, 'DescribeVolumes'
-- returns descriptions of the specified volumes. Otherwise, it returns a
-- description of every volume.
dvVolumeIds :: Lens' DescribeVolumes [Text]
dvVolumeIds = lens _dvVolumeIds (\ s a -> s{_dvVolumeIds = a}) . _Default . _Coerce;

-- | The RAID array ID. If you use this parameter, 'DescribeVolumes' returns
-- descriptions of the volumes associated with the specified RAID array.
dvRAIdArrayId :: Lens' DescribeVolumes (Maybe Text)
dvRAIdArrayId = lens _dvRAIdArrayId (\ s a -> s{_dvRAIdArrayId = a});

-- | A stack ID. The action describes the stack\'s registered Amazon EBS
-- volumes.
dvStackId :: Lens' DescribeVolumes (Maybe Text)
dvStackId = lens _dvStackId (\ s a -> s{_dvStackId = a});

instance AWSRequest DescribeVolumes where
        type Rs DescribeVolumes = DescribeVolumesResponse
        request = postJSON opsWorks
        response
          = receiveJSON
              (\ s h x ->
                 DescribeVolumesResponse' <$>
                   (x .?> "Volumes" .!@ mempty) <*> (pure (fromEnum s)))

instance ToHeaders DescribeVolumes where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("OpsWorks_20130218.DescribeVolumes" :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeVolumes where
        toJSON DescribeVolumes'{..}
          = object
              (catMaybes
                 [("InstanceId" .=) <$> _dvInstanceId,
                  ("VolumeIds" .=) <$> _dvVolumeIds,
                  ("RaidArrayId" .=) <$> _dvRAIdArrayId,
                  ("StackId" .=) <$> _dvStackId])

instance ToPath DescribeVolumes where
        toPath = const "/"

instance ToQuery DescribeVolumes where
        toQuery = const mempty

-- | Contains the response to a 'DescribeVolumes' request.
--
-- /See:/ 'describeVolumesResponse' smart constructor.
data DescribeVolumesResponse = DescribeVolumesResponse'
    { _dvrsVolumes        :: !(Maybe [Volume])
    , _dvrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVolumesResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvrsVolumes'
--
-- * 'dvrsResponseStatus'
describeVolumesResponse
    :: Int -- ^ 'dvrsResponseStatus'
    -> DescribeVolumesResponse
describeVolumesResponse pResponseStatus_ =
    DescribeVolumesResponse'
    { _dvrsVolumes = Nothing
    , _dvrsResponseStatus = pResponseStatus_
    }

-- | An array of volume IDs.
dvrsVolumes :: Lens' DescribeVolumesResponse [Volume]
dvrsVolumes = lens _dvrsVolumes (\ s a -> s{_dvrsVolumes = a}) . _Default . _Coerce;

-- | The response status code.
dvrsResponseStatus :: Lens' DescribeVolumesResponse Int
dvrsResponseStatus = lens _dvrsResponseStatus (\ s a -> s{_dvrsResponseStatus = a});