{-# 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.IoT.GetPolicy
-- 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 specified policy with the policy document of the default version.
--
--
module Network.AWS.IoT.GetPolicy
    (
    -- * Creating a Request
      getPolicy
    , GetPolicy
    -- * Request Lenses
    , gpPolicyName

    -- * Destructuring the Response
    , getPolicyResponse
    , GetPolicyResponse
    -- * Response Lenses
    , gprsPolicyName
    , gprsPolicyDocument
    , gprsDefaultVersionId
    , gprsPolicyARN
    , gprsResponseStatus
    ) where

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

-- | The input for the GetPolicy operation.
--
--
--
-- /See:/ 'getPolicy' smart constructor.
newtype GetPolicy = GetPolicy'
    { _gpPolicyName :: Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetPolicy' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gpPolicyName' - The name of the policy.
getPolicy
    :: Text -- ^ 'gpPolicyName'
    -> GetPolicy
getPolicy pPolicyName_ =
    GetPolicy'
    { _gpPolicyName = pPolicyName_
    }

-- | The name of the policy.
gpPolicyName :: Lens' GetPolicy Text
gpPolicyName = lens _gpPolicyName (\ s a -> s{_gpPolicyName = a});

instance AWSRequest GetPolicy where
        type Rs GetPolicy = GetPolicyResponse
        request = get ioT
        response
          = receiveJSON
              (\ s h x ->
                 GetPolicyResponse' <$>
                   (x .?> "policyName") <*> (x .?> "policyDocument") <*>
                     (x .?> "defaultVersionId")
                     <*> (x .?> "policyArn")
                     <*> (pure (fromEnum s)))

instance Hashable GetPolicy

instance NFData GetPolicy

instance ToHeaders GetPolicy where
        toHeaders = const mempty

instance ToPath GetPolicy where
        toPath GetPolicy'{..}
          = mconcat ["/policies/", toBS _gpPolicyName]

instance ToQuery GetPolicy where
        toQuery = const mempty

-- | The output from the GetPolicy operation.
--
--
--
-- /See:/ 'getPolicyResponse' smart constructor.
data GetPolicyResponse = GetPolicyResponse'
    { _gprsPolicyName       :: !(Maybe Text)
    , _gprsPolicyDocument   :: !(Maybe Text)
    , _gprsDefaultVersionId :: !(Maybe Text)
    , _gprsPolicyARN        :: !(Maybe Text)
    , _gprsResponseStatus   :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'GetPolicyResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'gprsPolicyName' - The policy name.
--
-- * 'gprsPolicyDocument' - The JSON document that describes the policy.
--
-- * 'gprsDefaultVersionId' - The default policy version ID.
--
-- * 'gprsPolicyARN' - The policy ARN.
--
-- * 'gprsResponseStatus' - -- | The response status code.
getPolicyResponse
    :: Int -- ^ 'gprsResponseStatus'
    -> GetPolicyResponse
getPolicyResponse pResponseStatus_ =
    GetPolicyResponse'
    { _gprsPolicyName = Nothing
    , _gprsPolicyDocument = Nothing
    , _gprsDefaultVersionId = Nothing
    , _gprsPolicyARN = Nothing
    , _gprsResponseStatus = pResponseStatus_
    }

-- | The policy name.
gprsPolicyName :: Lens' GetPolicyResponse (Maybe Text)
gprsPolicyName = lens _gprsPolicyName (\ s a -> s{_gprsPolicyName = a});

-- | The JSON document that describes the policy.
gprsPolicyDocument :: Lens' GetPolicyResponse (Maybe Text)
gprsPolicyDocument = lens _gprsPolicyDocument (\ s a -> s{_gprsPolicyDocument = a});

-- | The default policy version ID.
gprsDefaultVersionId :: Lens' GetPolicyResponse (Maybe Text)
gprsDefaultVersionId = lens _gprsDefaultVersionId (\ s a -> s{_gprsDefaultVersionId = a});

-- | The policy ARN.
gprsPolicyARN :: Lens' GetPolicyResponse (Maybe Text)
gprsPolicyARN = lens _gprsPolicyARN (\ s a -> s{_gprsPolicyARN = a});

-- | -- | The response status code.
gprsResponseStatus :: Lens' GetPolicyResponse Int
gprsResponseStatus = lens _gprsResponseStatus (\ s a -> s{_gprsResponseStatus = a});

instance NFData GetPolicyResponse