{-# 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.PurchaseScheduledInstances
-- 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)
--
-- Purchases one or more Scheduled Instances with the specified schedule.
--
-- Scheduled Instances enable you to purchase Amazon EC2 compute capacity by the hour for a one-year term. Before you can purchase a Scheduled Instance, you must call < DescribeScheduledInstanceAvailability> to check for available schedules and obtain a purchase token. After you purchase a Scheduled Instance, you must call < RunScheduledInstances> during each scheduled time period.
--
-- After you purchase a Scheduled Instance, you can\'t cancel, modify, or resell your purchase.
module Network.AWS.EC2.PurchaseScheduledInstances
    (
    -- * Creating a Request
      purchaseScheduledInstances
    , PurchaseScheduledInstances
    -- * Request Lenses
    , psiClientToken
    , psiDryRun
    , psiPurchaseRequests

    -- * Destructuring the Response
    , purchaseScheduledInstancesResponse
    , PurchaseScheduledInstancesResponse
    -- * Response Lenses
    , psirsScheduledInstanceSet
    , psirsResponseStatus
    ) 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 PurchaseScheduledInstances.
--
-- /See:/ 'purchaseScheduledInstances' smart constructor.
data PurchaseScheduledInstances = PurchaseScheduledInstances'
    { _psiClientToken      :: !(Maybe Text)
    , _psiDryRun           :: !(Maybe Bool)
    , _psiPurchaseRequests :: !(List1 PurchaseRequest)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'PurchaseScheduledInstances' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'psiClientToken'
--
-- * 'psiDryRun'
--
-- * 'psiPurchaseRequests'
purchaseScheduledInstances
    :: NonEmpty PurchaseRequest -- ^ 'psiPurchaseRequests'
    -> PurchaseScheduledInstances
purchaseScheduledInstances pPurchaseRequests_ =
    PurchaseScheduledInstances'
    { _psiClientToken = Nothing
    , _psiDryRun = Nothing
    , _psiPurchaseRequests = _List1 # pPurchaseRequests_
    }

-- | Unique, case-sensitive identifier that ensures the idempotency of the request. For more information, see <http://docs.aws.amazon.com/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html Ensuring Idempotency>.
psiClientToken :: Lens' PurchaseScheduledInstances (Maybe Text)
psiClientToken = lens _psiClientToken (\ s a -> s{_psiClientToken = a});

-- | 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'.
psiDryRun :: Lens' PurchaseScheduledInstances (Maybe Bool)
psiDryRun = lens _psiDryRun (\ s a -> s{_psiDryRun = a});

-- | One or more purchase requests.
psiPurchaseRequests :: Lens' PurchaseScheduledInstances (NonEmpty PurchaseRequest)
psiPurchaseRequests = lens _psiPurchaseRequests (\ s a -> s{_psiPurchaseRequests = a}) . _List1;

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

instance Hashable PurchaseScheduledInstances

instance NFData PurchaseScheduledInstances

instance ToHeaders PurchaseScheduledInstances where
        toHeaders = const mempty

instance ToPath PurchaseScheduledInstances where
        toPath = const "/"

instance ToQuery PurchaseScheduledInstances where
        toQuery PurchaseScheduledInstances'{..}
          = mconcat
              ["Action" =:
                 ("PurchaseScheduledInstances" :: ByteString),
               "Version" =: ("2015-10-01" :: ByteString),
               "ClientToken" =: _psiClientToken,
               "DryRun" =: _psiDryRun,
               toQueryList "PurchaseRequest" _psiPurchaseRequests]

-- | Contains the output of PurchaseScheduledInstances.
--
-- /See:/ 'purchaseScheduledInstancesResponse' smart constructor.
data PurchaseScheduledInstancesResponse = PurchaseScheduledInstancesResponse'
    { _psirsScheduledInstanceSet :: !(Maybe [ScheduledInstance])
    , _psirsResponseStatus       :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'PurchaseScheduledInstancesResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'psirsScheduledInstanceSet'
--
-- * 'psirsResponseStatus'
purchaseScheduledInstancesResponse
    :: Int -- ^ 'psirsResponseStatus'
    -> PurchaseScheduledInstancesResponse
purchaseScheduledInstancesResponse pResponseStatus_ =
    PurchaseScheduledInstancesResponse'
    { _psirsScheduledInstanceSet = Nothing
    , _psirsResponseStatus = pResponseStatus_
    }

-- | Information about the Scheduled Instances.
psirsScheduledInstanceSet :: Lens' PurchaseScheduledInstancesResponse [ScheduledInstance]
psirsScheduledInstanceSet = lens _psirsScheduledInstanceSet (\ s a -> s{_psirsScheduledInstanceSet = a}) . _Default . _Coerce;

-- | The response status code.
psirsResponseStatus :: Lens' PurchaseScheduledInstancesResponse Int
psirsResponseStatus = lens _psirsResponseStatus (\ s a -> s{_psirsResponseStatus = a});

instance NFData PurchaseScheduledInstancesResponse