{-# 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.CloudFront.ListDistributions
-- 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)
--
-- List distributions.
--
-- This operation returns paginated results.
module Network.AWS.CloudFront.ListDistributions
    (
    -- * Creating a Request
      listDistributions
    , ListDistributions
    -- * Request Lenses
    , ldMarker
    , ldMaxItems

    -- * Destructuring the Response
    , listDistributionsResponse
    , ListDistributionsResponse
    -- * Response Lenses
    , ldrsResponseStatus
    , ldrsDistributionList
    ) where

import           Network.AWS.CloudFront.Types
import           Network.AWS.CloudFront.Types.Product
import           Network.AWS.Lens
import           Network.AWS.Pager
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | The request to list your distributions.
--
-- /See:/ 'listDistributions' smart constructor.
data ListDistributions = ListDistributions'
    { _ldMarker   :: !(Maybe Text)
    , _ldMaxItems :: !(Maybe Text)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListDistributions' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ldMarker'
--
-- * 'ldMaxItems'
listDistributions
    :: ListDistributions
listDistributions =
    ListDistributions'
    { _ldMarker = Nothing
    , _ldMaxItems = Nothing
    }

-- | Use Marker and MaxItems to control pagination of results. If you have
-- more than MaxItems distributions that satisfy the request, the response
-- includes a NextMarker element. To get the next page of results, submit
-- another request. For the value of Marker, specify the value of
-- NextMarker from the last response. (For the first request, omit Marker.)
ldMarker :: Lens' ListDistributions (Maybe Text)
ldMarker = lens _ldMarker (\ s a -> s{_ldMarker = a});

-- | The maximum number of distributions that you want CloudFront to return
-- in the response body. The maximum and default values are both 100.
ldMaxItems :: Lens' ListDistributions (Maybe Text)
ldMaxItems = lens _ldMaxItems (\ s a -> s{_ldMaxItems = a});

instance AWSPager ListDistributions where
        page rq rs
          | stop (rs ^. ldrsDistributionList . dlIsTruncated) =
            Nothing
          | isNothing
              (rs ^? ldrsDistributionList . dlNextMarker . _Just)
            = Nothing
          | otherwise =
            Just $ rq &
              ldMarker .~
                rs ^? ldrsDistributionList . dlNextMarker . _Just

instance AWSRequest ListDistributions where
        type Rs ListDistributions = ListDistributionsResponse
        request = get cloudFront
        response
          = receiveXML
              (\ s h x ->
                 ListDistributionsResponse' <$>
                   (pure (fromEnum s)) <*> (parseXML x))

instance Hashable ListDistributions

instance NFData ListDistributions

instance ToHeaders ListDistributions where
        toHeaders = const mempty

instance ToPath ListDistributions where
        toPath = const "/2016-01-28/distribution"

instance ToQuery ListDistributions where
        toQuery ListDistributions'{..}
          = mconcat
              ["Marker" =: _ldMarker, "MaxItems" =: _ldMaxItems]

-- | The returned result of the corresponding request.
--
-- /See:/ 'listDistributionsResponse' smart constructor.
data ListDistributionsResponse = ListDistributionsResponse'
    { _ldrsResponseStatus   :: !Int
    , _ldrsDistributionList :: !DistributionList
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListDistributionsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ldrsResponseStatus'
--
-- * 'ldrsDistributionList'
listDistributionsResponse
    :: Int -- ^ 'ldrsResponseStatus'
    -> DistributionList -- ^ 'ldrsDistributionList'
    -> ListDistributionsResponse
listDistributionsResponse pResponseStatus_ pDistributionList_ =
    ListDistributionsResponse'
    { _ldrsResponseStatus = pResponseStatus_
    , _ldrsDistributionList = pDistributionList_
    }

-- | The response status code.
ldrsResponseStatus :: Lens' ListDistributionsResponse Int
ldrsResponseStatus = lens _ldrsResponseStatus (\ s a -> s{_ldrsResponseStatus = a});

-- | The DistributionList type.
ldrsDistributionList :: Lens' ListDistributionsResponse DistributionList
ldrsDistributionList = lens _ldrsDistributionList (\ s a -> s{_ldrsDistributionList = a});

instance NFData ListDistributionsResponse