{-# 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.MachineLearning.DescribeBatchPredictions
-- Copyright   : (c) 2013-2015 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)
--
-- Returns a list of 'BatchPrediction' operations that match the search
-- criteria in the request.
--
-- /See:/ <http://http://docs.aws.amazon.com/machine-learning/latest/APIReference/API_DescribeBatchPredictions.html AWS API Reference> for DescribeBatchPredictions.
--
-- This operation returns paginated results.
module Network.AWS.MachineLearning.DescribeBatchPredictions
    (
    -- * Creating a Request
      describeBatchPredictions
    , DescribeBatchPredictions
    -- * Request Lenses
    , dbpEQ
    , dbpGE
    , dbpPrefix
    , dbpGT
    , dbpNE
    , dbpNextToken
    , dbpSortOrder
    , dbpLimit
    , dbpLT
    , dbpFilterVariable
    , dbpLE

    -- * Destructuring the Response
    , describeBatchPredictionsResponse
    , DescribeBatchPredictionsResponse
    -- * Response Lenses
    , drsResults
    , drsNextToken
    , drsResponseStatus
    ) where

import           Network.AWS.MachineLearning.Types
import           Network.AWS.MachineLearning.Types.Product
import           Network.AWS.Pager
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'describeBatchPredictions' smart constructor.
data DescribeBatchPredictions = DescribeBatchPredictions'
    { _dbpEQ             :: !(Maybe Text)
    , _dbpGE             :: !(Maybe Text)
    , _dbpPrefix         :: !(Maybe Text)
    , _dbpGT             :: !(Maybe Text)
    , _dbpNE             :: !(Maybe Text)
    , _dbpNextToken      :: !(Maybe Text)
    , _dbpSortOrder      :: !(Maybe SortOrder)
    , _dbpLimit          :: !(Maybe Nat)
    , _dbpLT             :: !(Maybe Text)
    , _dbpFilterVariable :: !(Maybe BatchPredictionFilterVariable)
    , _dbpLE             :: !(Maybe Text)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeBatchPredictions' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dbpEQ'
--
-- * 'dbpGE'
--
-- * 'dbpPrefix'
--
-- * 'dbpGT'
--
-- * 'dbpNE'
--
-- * 'dbpNextToken'
--
-- * 'dbpSortOrder'
--
-- * 'dbpLimit'
--
-- * 'dbpLT'
--
-- * 'dbpFilterVariable'
--
-- * 'dbpLE'
describeBatchPredictions
    :: DescribeBatchPredictions
describeBatchPredictions =
    DescribeBatchPredictions'
    { _dbpEQ = Nothing
    , _dbpGE = Nothing
    , _dbpPrefix = Nothing
    , _dbpGT = Nothing
    , _dbpNE = Nothing
    , _dbpNextToken = Nothing
    , _dbpSortOrder = Nothing
    , _dbpLimit = Nothing
    , _dbpLT = Nothing
    , _dbpFilterVariable = Nothing
    , _dbpLE = Nothing
    }

-- | The equal to operator. The 'BatchPrediction' results will have
-- 'FilterVariable' values that exactly match the value specified with
-- 'EQ'.
dbpEQ :: Lens' DescribeBatchPredictions (Maybe Text)
dbpEQ = lens _dbpEQ (\ s a -> s{_dbpEQ = a});

-- | The greater than or equal to operator. The 'BatchPrediction' results
-- will have 'FilterVariable' values that are greater than or equal to the
-- value specified with 'GE'.
dbpGE :: Lens' DescribeBatchPredictions (Maybe Text)
dbpGE = lens _dbpGE (\ s a -> s{_dbpGE = a});

-- | A string that is found at the beginning of a variable, such as 'Name' or
-- 'Id'.
--
-- For example, a 'Batch Prediction' operation could have the 'Name'
-- '2014-09-09-HolidayGiftMailer'. To search for this 'BatchPrediction',
-- select 'Name' for the 'FilterVariable' and any of the following strings
-- for the 'Prefix':
--
-- -   2014-09
--
-- -   2014-09-09
--
-- -   2014-09-09-Holiday
--
dbpPrefix :: Lens' DescribeBatchPredictions (Maybe Text)
dbpPrefix = lens _dbpPrefix (\ s a -> s{_dbpPrefix = a});

-- | The greater than operator. The 'BatchPrediction' results will have
-- 'FilterVariable' values that are greater than the value specified with
-- 'GT'.
dbpGT :: Lens' DescribeBatchPredictions (Maybe Text)
dbpGT = lens _dbpGT (\ s a -> s{_dbpGT = a});

-- | The not equal to operator. The 'BatchPrediction' results will have
-- 'FilterVariable' values not equal to the value specified with 'NE'.
dbpNE :: Lens' DescribeBatchPredictions (Maybe Text)
dbpNE = lens _dbpNE (\ s a -> s{_dbpNE = a});

-- | An ID of the page in the paginated results.
dbpNextToken :: Lens' DescribeBatchPredictions (Maybe Text)
dbpNextToken = lens _dbpNextToken (\ s a -> s{_dbpNextToken = a});

-- | A two-value parameter that determines the sequence of the resulting list
-- of 'MLModel's.
--
-- -   'asc' - Arranges the list in ascending order (A-Z, 0-9).
-- -   'dsc' - Arranges the list in descending order (Z-A, 9-0).
--
-- Results are sorted by 'FilterVariable'.
dbpSortOrder :: Lens' DescribeBatchPredictions (Maybe SortOrder)
dbpSortOrder = lens _dbpSortOrder (\ s a -> s{_dbpSortOrder = a});

-- | The number of pages of information to include in the result. The range
-- of acceptable values is 1 through 100. The default value is 100.
dbpLimit :: Lens' DescribeBatchPredictions (Maybe Natural)
dbpLimit = lens _dbpLimit (\ s a -> s{_dbpLimit = a}) . mapping _Nat;

-- | The less than operator. The 'BatchPrediction' results will have
-- 'FilterVariable' values that are less than the value specified with
-- 'LT'.
dbpLT :: Lens' DescribeBatchPredictions (Maybe Text)
dbpLT = lens _dbpLT (\ s a -> s{_dbpLT = a});

-- | Use one of the following variables to filter a list of
-- 'BatchPrediction':
--
-- -   'CreatedAt' - Sets the search criteria to the 'BatchPrediction'
--     creation date.
-- -   'Status' - Sets the search criteria to the 'BatchPrediction' status.
-- -   'Name' - Sets the search criteria to the contents of the
--     'BatchPrediction' ____ 'Name'.
-- -   'IAMUser' - Sets the search criteria to the user account that
--     invoked the 'BatchPrediction' creation.
-- -   'MLModelId' - Sets the search criteria to the 'MLModel' used in the
--     'BatchPrediction'.
-- -   'DataSourceId' - Sets the search criteria to the 'DataSource' used
--     in the 'BatchPrediction'.
-- -   'DataURI' - Sets the search criteria to the data file(s) used in the
--     'BatchPrediction'. The URL can identify either a file or an Amazon
--     Simple Storage Solution (Amazon S3) bucket or directory.
dbpFilterVariable :: Lens' DescribeBatchPredictions (Maybe BatchPredictionFilterVariable)
dbpFilterVariable = lens _dbpFilterVariable (\ s a -> s{_dbpFilterVariable = a});

-- | The less than or equal to operator. The 'BatchPrediction' results will
-- have 'FilterVariable' values that are less than or equal to the value
-- specified with 'LE'.
dbpLE :: Lens' DescribeBatchPredictions (Maybe Text)
dbpLE = lens _dbpLE (\ s a -> s{_dbpLE = a});

instance AWSPager DescribeBatchPredictions where
        page rq rs
          | stop (rs ^. drsNextToken) = Nothing
          | stop (rs ^. drsResults) = Nothing
          | otherwise =
            Just $ rq & dbpNextToken .~ rs ^. drsNextToken

instance AWSRequest DescribeBatchPredictions where
        type Rs DescribeBatchPredictions =
             DescribeBatchPredictionsResponse
        request = postJSON machineLearning
        response
          = receiveJSON
              (\ s h x ->
                 DescribeBatchPredictionsResponse' <$>
                   (x .?> "Results" .!@ mempty) <*> (x .?> "NextToken")
                     <*> (pure (fromEnum s)))

instance ToHeaders DescribeBatchPredictions where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("AmazonML_20141212.DescribeBatchPredictions" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeBatchPredictions where
        toJSON DescribeBatchPredictions'{..}
          = object
              (catMaybes
                 [("EQ" .=) <$> _dbpEQ, ("GE" .=) <$> _dbpGE,
                  ("Prefix" .=) <$> _dbpPrefix, ("GT" .=) <$> _dbpGT,
                  ("NE" .=) <$> _dbpNE,
                  ("NextToken" .=) <$> _dbpNextToken,
                  ("SortOrder" .=) <$> _dbpSortOrder,
                  ("Limit" .=) <$> _dbpLimit, ("LT" .=) <$> _dbpLT,
                  ("FilterVariable" .=) <$> _dbpFilterVariable,
                  ("LE" .=) <$> _dbpLE])

instance ToPath DescribeBatchPredictions where
        toPath = const "/"

instance ToQuery DescribeBatchPredictions where
        toQuery = const mempty

-- | Represents the output of a DescribeBatchPredictions operation. The
-- content is essentially a list of 'BatchPrediction's.
--
-- /See:/ 'describeBatchPredictionsResponse' smart constructor.
data DescribeBatchPredictionsResponse = DescribeBatchPredictionsResponse'
    { _drsResults        :: !(Maybe [BatchPrediction])
    , _drsNextToken      :: !(Maybe Text)
    , _drsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeBatchPredictionsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'drsResults'
--
-- * 'drsNextToken'
--
-- * 'drsResponseStatus'
describeBatchPredictionsResponse
    :: Int -- ^ 'drsResponseStatus'
    -> DescribeBatchPredictionsResponse
describeBatchPredictionsResponse pResponseStatus_ =
    DescribeBatchPredictionsResponse'
    { _drsResults = Nothing
    , _drsNextToken = Nothing
    , _drsResponseStatus = pResponseStatus_
    }

-- | A list of BatchPrediction objects that meet the search criteria.
drsResults :: Lens' DescribeBatchPredictionsResponse [BatchPrediction]
drsResults = lens _drsResults (\ s a -> s{_drsResults = a}) . _Default . _Coerce;

-- | The ID of the next page in the paginated results that indicates at least
-- one more page follows.
drsNextToken :: Lens' DescribeBatchPredictionsResponse (Maybe Text)
drsNextToken = lens _drsNextToken (\ s a -> s{_drsNextToken = a});

-- | The response status code.
drsResponseStatus :: Lens' DescribeBatchPredictionsResponse Int
drsResponseStatus = lens _drsResponseStatus (\ s a -> s{_drsResponseStatus = a});