{-# 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.DescribeScheduledInstanceAvailability
-- 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)
--
-- Finds available schedules that meet the specified criteria.
--
-- You can search for an available schedule no more than 3 months in
-- advance. You must meet the minimum required duration of 1,200 hours per
-- year. For example, the minimum daily schedule is 4 hours, the minimum
-- weekly schedule is 24 hours, and the minimum monthly schedule is 100
-- hours.
--
-- After you find a schedule that meets your needs, call
-- < PurchaseScheduledInstances> to purchase Scheduled Instances with that
-- schedule.
module Network.AWS.EC2.DescribeScheduledInstanceAvailability
    (
    -- * Creating a Request
      describeScheduledInstanceAvailability
    , DescribeScheduledInstanceAvailability
    -- * Request Lenses
    , dsiaMinSlotDurationInHours
    , dsiaFilters
    , dsiaNextToken
    , dsiaMaxSlotDurationInHours
    , dsiaDryRun
    , dsiaMaxResults
    , dsiaRecurrence
    , dsiaFirstSlotStartTimeRange

    -- * Destructuring the Response
    , describeScheduledInstanceAvailabilityResponse
    , DescribeScheduledInstanceAvailabilityResponse
    -- * Response Lenses
    , dsiarsScheduledInstanceAvailabilitySet
    , dsiarsNextToken
    , dsiarsResponseStatus
    ) 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 DescribeScheduledInstanceAvailability.
--
-- /See:/ 'describeScheduledInstanceAvailability' smart constructor.
data DescribeScheduledInstanceAvailability = DescribeScheduledInstanceAvailability'
    { _dsiaMinSlotDurationInHours  :: !(Maybe Int)
    , _dsiaFilters                 :: !(Maybe [Filter])
    , _dsiaNextToken               :: !(Maybe Text)
    , _dsiaMaxSlotDurationInHours  :: !(Maybe Int)
    , _dsiaDryRun                  :: !(Maybe Bool)
    , _dsiaMaxResults              :: !(Maybe Int)
    , _dsiaRecurrence              :: !ScheduledInstanceRecurrenceRequest
    , _dsiaFirstSlotStartTimeRange :: !SlotDateTimeRangeRequest
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeScheduledInstanceAvailability' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsiaMinSlotDurationInHours'
--
-- * 'dsiaFilters'
--
-- * 'dsiaNextToken'
--
-- * 'dsiaMaxSlotDurationInHours'
--
-- * 'dsiaDryRun'
--
-- * 'dsiaMaxResults'
--
-- * 'dsiaRecurrence'
--
-- * 'dsiaFirstSlotStartTimeRange'
describeScheduledInstanceAvailability
    :: ScheduledInstanceRecurrenceRequest -- ^ 'dsiaRecurrence'
    -> SlotDateTimeRangeRequest -- ^ 'dsiaFirstSlotStartTimeRange'
    -> DescribeScheduledInstanceAvailability
describeScheduledInstanceAvailability pRecurrence_ pFirstSlotStartTimeRange_ =
    DescribeScheduledInstanceAvailability'
    { _dsiaMinSlotDurationInHours = Nothing
    , _dsiaFilters = Nothing
    , _dsiaNextToken = Nothing
    , _dsiaMaxSlotDurationInHours = Nothing
    , _dsiaDryRun = Nothing
    , _dsiaMaxResults = Nothing
    , _dsiaRecurrence = pRecurrence_
    , _dsiaFirstSlotStartTimeRange = pFirstSlotStartTimeRange_
    }

-- | The minimum available duration, in hours. The minimum required duration
-- is 1,200 hours per year. For example, the minimum daily schedule is 4
-- hours, the minimum weekly schedule is 24 hours, and the minimum monthly
-- schedule is 100 hours.
dsiaMinSlotDurationInHours :: Lens' DescribeScheduledInstanceAvailability (Maybe Int)
dsiaMinSlotDurationInHours = lens _dsiaMinSlotDurationInHours (\ s a -> s{_dsiaMinSlotDurationInHours = a});

-- | One or more filters.
--
-- -   'availability-zone' - The Availability Zone (for example,
--     'us-west-2a').
--
-- -   'instance-type' - The instance type (for example, 'c4.large').
--
-- -   'network-platform' - The network platform ('EC2-Classic' or
--     'EC2-VPC').
--
-- -   'platform' - The platform ('Linux\/UNIX' or 'Windows').
--
dsiaFilters :: Lens' DescribeScheduledInstanceAvailability [Filter]
dsiaFilters = lens _dsiaFilters (\ s a -> s{_dsiaFilters = a}) . _Default . _Coerce;

-- | The token for the next set of results.
dsiaNextToken :: Lens' DescribeScheduledInstanceAvailability (Maybe Text)
dsiaNextToken = lens _dsiaNextToken (\ s a -> s{_dsiaNextToken = a});

-- | The maximum available duration, in hours. This value must be greater
-- than 'MinSlotDurationInHours' and less than 1,720.
dsiaMaxSlotDurationInHours :: Lens' DescribeScheduledInstanceAvailability (Maybe Int)
dsiaMaxSlotDurationInHours = lens _dsiaMaxSlotDurationInHours (\ s a -> s{_dsiaMaxSlotDurationInHours = 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'.
dsiaDryRun :: Lens' DescribeScheduledInstanceAvailability (Maybe Bool)
dsiaDryRun = lens _dsiaDryRun (\ s a -> s{_dsiaDryRun = a});

-- | The maximum number of results to return in a single call. This value can
-- be between 5 and 300. The default value is 300. To retrieve the
-- remaining results, make another call with the returned 'NextToken'
-- value.
dsiaMaxResults :: Lens' DescribeScheduledInstanceAvailability (Maybe Int)
dsiaMaxResults = lens _dsiaMaxResults (\ s a -> s{_dsiaMaxResults = a});

-- | The schedule recurrence.
dsiaRecurrence :: Lens' DescribeScheduledInstanceAvailability ScheduledInstanceRecurrenceRequest
dsiaRecurrence = lens _dsiaRecurrence (\ s a -> s{_dsiaRecurrence = a});

-- | The time period for the first schedule to start.
dsiaFirstSlotStartTimeRange :: Lens' DescribeScheduledInstanceAvailability SlotDateTimeRangeRequest
dsiaFirstSlotStartTimeRange = lens _dsiaFirstSlotStartTimeRange (\ s a -> s{_dsiaFirstSlotStartTimeRange = a});

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

instance Hashable
         DescribeScheduledInstanceAvailability

instance NFData DescribeScheduledInstanceAvailability

instance ToHeaders
         DescribeScheduledInstanceAvailability where
        toHeaders = const mempty

instance ToPath DescribeScheduledInstanceAvailability
         where
        toPath = const "/"

instance ToQuery
         DescribeScheduledInstanceAvailability where
        toQuery DescribeScheduledInstanceAvailability'{..}
          = mconcat
              ["Action" =:
                 ("DescribeScheduledInstanceAvailability" ::
                    ByteString),
               "Version" =: ("2015-10-01" :: ByteString),
               "MinSlotDurationInHours" =:
                 _dsiaMinSlotDurationInHours,
               toQuery (toQueryList "Filter" <$> _dsiaFilters),
               "NextToken" =: _dsiaNextToken,
               "MaxSlotDurationInHours" =:
                 _dsiaMaxSlotDurationInHours,
               "DryRun" =: _dsiaDryRun,
               "MaxResults" =: _dsiaMaxResults,
               "Recurrence" =: _dsiaRecurrence,
               "FirstSlotStartTimeRange" =:
                 _dsiaFirstSlotStartTimeRange]

-- | Contains the output of DescribeScheduledInstanceAvailability.
--
-- /See:/ 'describeScheduledInstanceAvailabilityResponse' smart constructor.
data DescribeScheduledInstanceAvailabilityResponse = DescribeScheduledInstanceAvailabilityResponse'
    { _dsiarsScheduledInstanceAvailabilitySet :: !(Maybe [ScheduledInstanceAvailability])
    , _dsiarsNextToken                        :: !(Maybe Text)
    , _dsiarsResponseStatus                   :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeScheduledInstanceAvailabilityResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsiarsScheduledInstanceAvailabilitySet'
--
-- * 'dsiarsNextToken'
--
-- * 'dsiarsResponseStatus'
describeScheduledInstanceAvailabilityResponse
    :: Int -- ^ 'dsiarsResponseStatus'
    -> DescribeScheduledInstanceAvailabilityResponse
describeScheduledInstanceAvailabilityResponse pResponseStatus_ =
    DescribeScheduledInstanceAvailabilityResponse'
    { _dsiarsScheduledInstanceAvailabilitySet = Nothing
    , _dsiarsNextToken = Nothing
    , _dsiarsResponseStatus = pResponseStatus_
    }

-- | Information about the available Scheduled Instances.
dsiarsScheduledInstanceAvailabilitySet :: Lens' DescribeScheduledInstanceAvailabilityResponse [ScheduledInstanceAvailability]
dsiarsScheduledInstanceAvailabilitySet = lens _dsiarsScheduledInstanceAvailabilitySet (\ s a -> s{_dsiarsScheduledInstanceAvailabilitySet = a}) . _Default . _Coerce;

-- | The token required to retrieve the next set of results. This value is
-- 'null' when there are no more results to return.
dsiarsNextToken :: Lens' DescribeScheduledInstanceAvailabilityResponse (Maybe Text)
dsiarsNextToken = lens _dsiarsNextToken (\ s a -> s{_dsiarsNextToken = a});

-- | The response status code.
dsiarsResponseStatus :: Lens' DescribeScheduledInstanceAvailabilityResponse Int
dsiarsResponseStatus = lens _dsiarsResponseStatus (\ s a -> s{_dsiarsResponseStatus = a});

instance NFData
         DescribeScheduledInstanceAvailabilityResponse