{-# 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.Route53.ListTrafficPolicyInstancesByPolicy
-- 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)
--
-- Gets information about the traffic policy instances that you created by
-- using a specify traffic policy version.
--
-- After you submit a 'CreateTrafficPolicyInstance' or an
-- 'UpdateTrafficPolicyInstance' request, there\'s a brief delay while
-- Amazon Route 53 creates the resource record sets that are specified in
-- the traffic policy definition. For more information, see the < State>
-- response element.
--
-- To get information about the traffic policy instances that you created
-- by using a specify traffic policy version, send a 'GET' request to the
-- '\/Route 53 API version\/trafficpolicyinstance' resource and include the
-- ID and version of the traffic policy.
--
-- Amazon Route 53 returns a maximum of 100 items in each response. If you
-- have a lot of traffic policy instances, you can use the 'MaxItems'
-- parameter to list them in groups of up to 100.
--
-- The response includes five values that help you navigate from one group
-- of 'MaxItems' traffic policy instances to the next:
--
-- -   __IsTruncated__
--
--     If the value of 'IsTruncated' in the response is 'true', there are
--     more traffic policy instances associated with the specified traffic
--     policy.
--
--     If 'IsTruncated' is 'false', this response includes the last traffic
--     policy instance that is associated with the specified traffic
--     policy.
--
-- -   __MaxItems__
--
--     The value that you specified for the 'MaxItems' parameter in the
--     request that produced the current response.
--
-- -   __HostedZoneIdMarker__, __TrafficPolicyInstanceNameMarker__, and
--     __TrafficPolicyInstanceTypeMarker__
--
--     If 'IsTruncated' is 'true', these values in the response represent
--     the first traffic policy instance in the next group of 'MaxItems'
--     traffic policy instances. To list more traffic policy instances,
--     make another call to 'ListTrafficPolicyInstancesByPolicy', and
--     specify these values in the corresponding request parameters.
--
--     If 'IsTruncated' is 'false', all three elements are omitted from the
--     response.
--
module Network.AWS.Route53.ListTrafficPolicyInstancesByPolicy
    (
    -- * Creating a Request
      listTrafficPolicyInstancesByPolicy
    , ListTrafficPolicyInstancesByPolicy
    -- * Request Lenses
    , ltpibpTrafficPolicyInstanceTypeMarker
    , ltpibpMaxItems
    , ltpibpHostedZoneIdMarker
    , ltpibpTrafficPolicyInstanceNameMarker
    , ltpibpTrafficPolicyId
    , ltpibpTrafficPolicyVersion

    -- * Destructuring the Response
    , listTrafficPolicyInstancesByPolicyResponse
    , ListTrafficPolicyInstancesByPolicyResponse
    -- * Response Lenses
    , ltpibprsTrafficPolicyInstanceTypeMarker
    , ltpibprsHostedZoneIdMarker
    , ltpibprsTrafficPolicyInstanceNameMarker
    , ltpibprsResponseStatus
    , ltpibprsTrafficPolicyInstances
    , ltpibprsIsTruncated
    , ltpibprsMaxItems
    ) where

import           Network.AWS.Lens
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response
import           Network.AWS.Route53.Types
import           Network.AWS.Route53.Types.Product

-- | A complex type that contains the information about the request to list
-- your traffic policy instances.
--
-- /See:/ 'listTrafficPolicyInstancesByPolicy' smart constructor.
data ListTrafficPolicyInstancesByPolicy = ListTrafficPolicyInstancesByPolicy'
    { _ltpibpTrafficPolicyInstanceTypeMarker :: !(Maybe RecordType)
    , _ltpibpMaxItems                        :: !(Maybe Text)
    , _ltpibpHostedZoneIdMarker              :: !(Maybe Text)
    , _ltpibpTrafficPolicyInstanceNameMarker :: !(Maybe Text)
    , _ltpibpTrafficPolicyId                 :: !Text
    , _ltpibpTrafficPolicyVersion            :: !Nat
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListTrafficPolicyInstancesByPolicy' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ltpibpTrafficPolicyInstanceTypeMarker'
--
-- * 'ltpibpMaxItems'
--
-- * 'ltpibpHostedZoneIdMarker'
--
-- * 'ltpibpTrafficPolicyInstanceNameMarker'
--
-- * 'ltpibpTrafficPolicyId'
--
-- * 'ltpibpTrafficPolicyVersion'
listTrafficPolicyInstancesByPolicy
    :: Text -- ^ 'ltpibpTrafficPolicyId'
    -> Natural -- ^ 'ltpibpTrafficPolicyVersion'
    -> ListTrafficPolicyInstancesByPolicy
listTrafficPolicyInstancesByPolicy pTrafficPolicyId_ pTrafficPolicyVersion_ =
    ListTrafficPolicyInstancesByPolicy'
    { _ltpibpTrafficPolicyInstanceTypeMarker = Nothing
    , _ltpibpMaxItems = Nothing
    , _ltpibpHostedZoneIdMarker = Nothing
    , _ltpibpTrafficPolicyInstanceNameMarker = Nothing
    , _ltpibpTrafficPolicyId = pTrafficPolicyId_
    , _ltpibpTrafficPolicyVersion = _Nat # pTrafficPolicyVersion_
    }

-- | For the first request to 'ListTrafficPolicyInstancesByPolicy', omit this
-- value.
--
-- If the value of 'IsTruncated' in the previous response was 'true',
-- 'TrafficPolicyInstanceTypeMarker' is the DNS type of the first traffic
-- policy instance in the next group of 'MaxItems' traffic policy
-- instances.
--
-- If the value of 'IsTruncated' in the previous response was 'false',
-- there are no more traffic policy instances to get for this hosted zone.
ltpibpTrafficPolicyInstanceTypeMarker :: Lens' ListTrafficPolicyInstancesByPolicy (Maybe RecordType)
ltpibpTrafficPolicyInstanceTypeMarker = lens _ltpibpTrafficPolicyInstanceTypeMarker (\ s a -> s{_ltpibpTrafficPolicyInstanceTypeMarker = a});

-- | The maximum number of traffic policy instances to be included in the
-- response body for this request. If you have more than 'MaxItems' traffic
-- policy instances, the value of the 'IsTruncated' element in the response
-- is 'true', and the values of 'HostedZoneIdMarker',
-- 'TrafficPolicyInstanceNameMarker', and 'TrafficPolicyInstanceTypeMarker'
-- represent the first traffic policy instance in the next group of
-- 'MaxItems' traffic policy instances.
ltpibpMaxItems :: Lens' ListTrafficPolicyInstancesByPolicy (Maybe Text)
ltpibpMaxItems = lens _ltpibpMaxItems (\ s a -> s{_ltpibpMaxItems = a});

-- | For the first request to 'ListTrafficPolicyInstancesByPolicy', omit this
-- value.
--
-- If the value of 'IsTruncated' in the previous response was 'true',
-- 'HostedZoneIdMarker' is the ID of the hosted zone for the first traffic
-- policy instance in the next group of 'MaxItems' traffic policy
-- instances.
--
-- If the value of 'IsTruncated' in the previous response was 'false',
-- there are no more traffic policy instances to get for this hosted zone.
--
-- If the value of 'IsTruncated' in the previous response was 'false', omit
-- this value.
ltpibpHostedZoneIdMarker :: Lens' ListTrafficPolicyInstancesByPolicy (Maybe Text)
ltpibpHostedZoneIdMarker = lens _ltpibpHostedZoneIdMarker (\ s a -> s{_ltpibpHostedZoneIdMarker = a});

-- | For the first request to 'ListTrafficPolicyInstancesByPolicy', omit this
-- value.
--
-- If the value of 'IsTruncated' in the previous response was 'true',
-- 'TrafficPolicyInstanceNameMarker' is the name of the first traffic
-- policy instance in the next group of 'MaxItems' traffic policy
-- instances.
--
-- If the value of 'IsTruncated' in the previous response was 'false',
-- there are no more traffic policy instances to get for this hosted zone.
--
-- If the value of 'IsTruncated' in the previous response was 'false', omit
-- this value.
ltpibpTrafficPolicyInstanceNameMarker :: Lens' ListTrafficPolicyInstancesByPolicy (Maybe Text)
ltpibpTrafficPolicyInstanceNameMarker = lens _ltpibpTrafficPolicyInstanceNameMarker (\ s a -> s{_ltpibpTrafficPolicyInstanceNameMarker = a});

-- | The ID of the traffic policy for which you want to list traffic policy
-- instances.
ltpibpTrafficPolicyId :: Lens' ListTrafficPolicyInstancesByPolicy Text
ltpibpTrafficPolicyId = lens _ltpibpTrafficPolicyId (\ s a -> s{_ltpibpTrafficPolicyId = a});

-- | The version of the traffic policy for which you want to list traffic
-- policy instances. The version must be associated with the traffic policy
-- that is specified by 'TrafficPolicyId'.
ltpibpTrafficPolicyVersion :: Lens' ListTrafficPolicyInstancesByPolicy Natural
ltpibpTrafficPolicyVersion = lens _ltpibpTrafficPolicyVersion (\ s a -> s{_ltpibpTrafficPolicyVersion = a}) . _Nat;

instance AWSRequest
         ListTrafficPolicyInstancesByPolicy where
        type Rs ListTrafficPolicyInstancesByPolicy =
             ListTrafficPolicyInstancesByPolicyResponse
        request = get route53
        response
          = receiveXML
              (\ s h x ->
                 ListTrafficPolicyInstancesByPolicyResponse' <$>
                   (x .@? "TrafficPolicyInstanceTypeMarker") <*>
                     (x .@? "HostedZoneIdMarker")
                     <*> (x .@? "TrafficPolicyInstanceNameMarker")
                     <*> (pure (fromEnum s))
                     <*>
                     (x .@? "TrafficPolicyInstances" .!@ mempty >>=
                        parseXMLList "TrafficPolicyInstance")
                     <*> (x .@ "IsTruncated")
                     <*> (x .@ "MaxItems"))

instance Hashable ListTrafficPolicyInstancesByPolicy

instance ToHeaders ListTrafficPolicyInstancesByPolicy
         where
        toHeaders = const mempty

instance ToPath ListTrafficPolicyInstancesByPolicy
         where
        toPath
          = const
              "/2013-04-01/trafficpolicyinstances/trafficpolicy"

instance ToQuery ListTrafficPolicyInstancesByPolicy
         where
        toQuery ListTrafficPolicyInstancesByPolicy'{..}
          = mconcat
              ["trafficpolicyinstancetype" =:
                 _ltpibpTrafficPolicyInstanceTypeMarker,
               "maxitems" =: _ltpibpMaxItems,
               "hostedzoneid" =: _ltpibpHostedZoneIdMarker,
               "trafficpolicyinstancename" =:
                 _ltpibpTrafficPolicyInstanceNameMarker,
               "id" =: _ltpibpTrafficPolicyId,
               "version" =: _ltpibpTrafficPolicyVersion]

-- | A complex type that contains the response information for the request.
--
-- /See:/ 'listTrafficPolicyInstancesByPolicyResponse' smart constructor.
data ListTrafficPolicyInstancesByPolicyResponse = ListTrafficPolicyInstancesByPolicyResponse'
    { _ltpibprsTrafficPolicyInstanceTypeMarker :: !(Maybe RecordType)
    , _ltpibprsHostedZoneIdMarker              :: !(Maybe Text)
    , _ltpibprsTrafficPolicyInstanceNameMarker :: !(Maybe Text)
    , _ltpibprsResponseStatus                  :: !Int
    , _ltpibprsTrafficPolicyInstances          :: ![TrafficPolicyInstance]
    , _ltpibprsIsTruncated                     :: !Bool
    , _ltpibprsMaxItems                        :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListTrafficPolicyInstancesByPolicyResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ltpibprsTrafficPolicyInstanceTypeMarker'
--
-- * 'ltpibprsHostedZoneIdMarker'
--
-- * 'ltpibprsTrafficPolicyInstanceNameMarker'
--
-- * 'ltpibprsResponseStatus'
--
-- * 'ltpibprsTrafficPolicyInstances'
--
-- * 'ltpibprsIsTruncated'
--
-- * 'ltpibprsMaxItems'
listTrafficPolicyInstancesByPolicyResponse
    :: Int -- ^ 'ltpibprsResponseStatus'
    -> Bool -- ^ 'ltpibprsIsTruncated'
    -> Text -- ^ 'ltpibprsMaxItems'
    -> ListTrafficPolicyInstancesByPolicyResponse
listTrafficPolicyInstancesByPolicyResponse pResponseStatus_ pIsTruncated_ pMaxItems_ =
    ListTrafficPolicyInstancesByPolicyResponse'
    { _ltpibprsTrafficPolicyInstanceTypeMarker = Nothing
    , _ltpibprsHostedZoneIdMarker = Nothing
    , _ltpibprsTrafficPolicyInstanceNameMarker = Nothing
    , _ltpibprsResponseStatus = pResponseStatus_
    , _ltpibprsTrafficPolicyInstances = mempty
    , _ltpibprsIsTruncated = pIsTruncated_
    , _ltpibprsMaxItems = pMaxItems_
    }

-- | If 'IsTruncated' is 'true', 'TrafficPolicyInstanceTypeMarker' is the DNS
-- type of the resource record sets that are associated with the first
-- traffic policy instance in the next group of 'MaxItems' traffic policy
-- instances.
ltpibprsTrafficPolicyInstanceTypeMarker :: Lens' ListTrafficPolicyInstancesByPolicyResponse (Maybe RecordType)
ltpibprsTrafficPolicyInstanceTypeMarker = lens _ltpibprsTrafficPolicyInstanceTypeMarker (\ s a -> s{_ltpibprsTrafficPolicyInstanceTypeMarker = a});

-- | If 'IsTruncated' is 'true', 'HostedZoneIdMarker' is the ID of the hosted
-- zone of the first traffic policy instance in the next group of
-- 'MaxItems' traffic policy instances.
ltpibprsHostedZoneIdMarker :: Lens' ListTrafficPolicyInstancesByPolicyResponse (Maybe Text)
ltpibprsHostedZoneIdMarker = lens _ltpibprsHostedZoneIdMarker (\ s a -> s{_ltpibprsHostedZoneIdMarker = a});

-- | If 'IsTruncated' is 'true', 'TrafficPolicyInstanceNameMarker' is the
-- name of the first traffic policy instance in the next group of
-- 'MaxItems' traffic policy instances.
ltpibprsTrafficPolicyInstanceNameMarker :: Lens' ListTrafficPolicyInstancesByPolicyResponse (Maybe Text)
ltpibprsTrafficPolicyInstanceNameMarker = lens _ltpibprsTrafficPolicyInstanceNameMarker (\ s a -> s{_ltpibprsTrafficPolicyInstanceNameMarker = a});

-- | The response status code.
ltpibprsResponseStatus :: Lens' ListTrafficPolicyInstancesByPolicyResponse Int
ltpibprsResponseStatus = lens _ltpibprsResponseStatus (\ s a -> s{_ltpibprsResponseStatus = a});

-- | A list that contains one 'TrafficPolicyInstance' element for each
-- traffic policy instance that matches the elements in the request.
ltpibprsTrafficPolicyInstances :: Lens' ListTrafficPolicyInstancesByPolicyResponse [TrafficPolicyInstance]
ltpibprsTrafficPolicyInstances = lens _ltpibprsTrafficPolicyInstances (\ s a -> s{_ltpibprsTrafficPolicyInstances = a}) . _Coerce;

-- | A flag that indicates whether there are more traffic policy instances to
-- be listed. If the response was truncated, you can get the next group of
-- 'MaxItems' traffic policy instances by calling
-- 'ListTrafficPolicyInstancesByPolicy' again and specifying the values of
-- the 'HostedZoneIdMarker', 'TrafficPolicyInstanceNameMarker', and
-- 'TrafficPolicyInstanceTypeMarker' elements in the corresponding request
-- parameters.
--
-- Valid Values: 'true' | 'false'
ltpibprsIsTruncated :: Lens' ListTrafficPolicyInstancesByPolicyResponse Bool
ltpibprsIsTruncated = lens _ltpibprsIsTruncated (\ s a -> s{_ltpibprsIsTruncated = a});

-- | The value that you specified for the 'MaxItems' parameter in the call to
-- 'ListTrafficPolicyInstancesByPolicy' that produced the current response.
ltpibprsMaxItems :: Lens' ListTrafficPolicyInstancesByPolicyResponse Text
ltpibprsMaxItems = lens _ltpibprsMaxItems (\ s a -> s{_ltpibprsMaxItems = a});