{-# 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.APIGateway.GetDeployments
-- 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 a < Deployments> collection.
--
-- This operation returns paginated results.
module Network.AWS.APIGateway.GetDeployments
    (
    -- * Creating a Request
      getDeployments
    , GetDeployments
    -- * Request Lenses
    , gdLimit
    , gdPosition
    , gdRestAPIId

    -- * Destructuring the Response
    , getDeploymentsResponse
    , GetDeploymentsResponse
    -- * Response Lenses
    , gdrsItems
    , gdrsPosition
    , gdrsResponseStatus
    ) where

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

-- | Requests Amazon API Gateway to get information about a < Deployments>
-- collection.
--
-- /See:/ 'getDeployments' smart constructor.
data GetDeployments = GetDeployments'
    { _gdLimit     :: !(Maybe Int)
    , _gdPosition  :: !(Maybe Text)
    , _gdRestAPIId :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetDeployments' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gdLimit'
--
-- * 'gdPosition'
--
-- * 'gdRestAPIId'
getDeployments
    :: Text -- ^ 'gdRestAPIId'
    -> GetDeployments
getDeployments pRestAPIId_ =
    GetDeployments'
    { _gdLimit = Nothing
    , _gdPosition = Nothing
    , _gdRestAPIId = pRestAPIId_
    }

-- | The maximum number of < Deployment> resources in the collection to get
-- information about. The default limit is 25. It should be an integer
-- between 1 - 500.
gdLimit :: Lens' GetDeployments (Maybe Int)
gdLimit = lens _gdLimit (\ s a -> s{_gdLimit = a});

-- | The position of the current < Deployment> resource in the collection to
-- get information about.
gdPosition :: Lens' GetDeployments (Maybe Text)
gdPosition = lens _gdPosition (\ s a -> s{_gdPosition = a});

-- | The identifier of the < RestApi> resource for the collection of
-- < Deployment> resources to get information about.
gdRestAPIId :: Lens' GetDeployments Text
gdRestAPIId = lens _gdRestAPIId (\ s a -> s{_gdRestAPIId = a});

instance AWSPager GetDeployments where
        page rq rs
          | stop (rs ^. gdrsPosition) = Nothing
          | stop (rs ^. gdrsItems) = Nothing
          | otherwise =
            Just $ rq & gdPosition .~ rs ^. gdrsPosition

instance AWSRequest GetDeployments where
        type Rs GetDeployments = GetDeploymentsResponse
        request = get apiGateway
        response
          = receiveJSON
              (\ s h x ->
                 GetDeploymentsResponse' <$>
                   (x .?> "item" .!@ mempty) <*> (x .?> "position") <*>
                     (pure (fromEnum s)))

instance Hashable GetDeployments

instance NFData GetDeployments

instance ToHeaders GetDeployments where
        toHeaders
          = const
              (mconcat
                 ["Accept" =# ("application/json" :: ByteString)])

instance ToPath GetDeployments where
        toPath GetDeployments'{..}
          = mconcat
              ["/restapis/", toBS _gdRestAPIId, "/deployments"]

instance ToQuery GetDeployments where
        toQuery GetDeployments'{..}
          = mconcat
              ["limit" =: _gdLimit, "position" =: _gdPosition]

-- | Represents a collection resource that contains zero or more references
-- to your existing deployments, and links that guide you on ways to
-- interact with your collection. The collection offers a paginated view of
-- the contained deployments.
--
-- /See:/ 'getDeploymentsResponse' smart constructor.
data GetDeploymentsResponse = GetDeploymentsResponse'
    { _gdrsItems          :: !(Maybe [Deployment])
    , _gdrsPosition       :: !(Maybe Text)
    , _gdrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetDeploymentsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gdrsItems'
--
-- * 'gdrsPosition'
--
-- * 'gdrsResponseStatus'
getDeploymentsResponse
    :: Int -- ^ 'gdrsResponseStatus'
    -> GetDeploymentsResponse
getDeploymentsResponse pResponseStatus_ =
    GetDeploymentsResponse'
    { _gdrsItems = Nothing
    , _gdrsPosition = Nothing
    , _gdrsResponseStatus = pResponseStatus_
    }

-- | The current page of any < Deployment> resources in the collection of
-- deployment resources.
gdrsItems :: Lens' GetDeploymentsResponse [Deployment]
gdrsItems = lens _gdrsItems (\ s a -> s{_gdrsItems = a}) . _Default . _Coerce;

-- | Undocumented member.
gdrsPosition :: Lens' GetDeploymentsResponse (Maybe Text)
gdrsPosition = lens _gdrsPosition (\ s a -> s{_gdrsPosition = a});

-- | The response status code.
gdrsResponseStatus :: Lens' GetDeploymentsResponse Int
gdrsResponseStatus = lens _gdrsResponseStatus (\ s a -> s{_gdrsResponseStatus = a});

instance NFData GetDeploymentsResponse