<?php
/**
 * AJAX Functions
 *
 * Process the front-end AJAX actions.
 *
 * @package     ALLIOC
 * @subpackage  Functions/ALLIOC
 * @copyright   Copyright (c) 2017, Daniel Powney
 * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License
 * @since       1.0
 */

// Exit if accessed directly
if (! defined ( 'ABSPATH' ))
	exit ();

add_action( 'wp_ajax_query_text', 'allioc_query_text' );
add_action( 'wp_ajax_nopriv_query_text', 'allioc_query_text');

/*error_reporting(E_ALL); 
ini_set("display_errors", 1);*/

include_once dirname( __FILE__ ) . '/../dialogflow/vendor/autoload.php';
require_once dirname( __FILE__ ) . '/../dialogflow/lib.php';

use Google\Cloud\Dialogflow\V2\SessionsClient;
use Google\Cloud\Dialogflow\V2\QueryInput;
use Google\Cloud\Dialogflow\V2\TextInput;
use Google\Cloud\Dialogflow\V2\EventInput;

function allioc_query_text() {
	check_ajax_referer('allioc-!@#$%^', 'security');

$sessionId = isset($_POST['session']) ? sanitize_text_field($_POST['session']) : 'stargroup';

$message = isset($_POST['message']) ? sanitize_text_field($_POST['message']) : 'hi';

$event =  isset($_POST['event']) ? sanitize_text_field($_POST['event']) : '';

$languageCode =isset($_POST['language']) ? sanitize_text_field($_POST['language']) : 'en';

$general_settings = (array) get_option( 'allioc_general_settings' );

$arr = json_decode($general_settings['allioc_access_token'], true);
$projectId = "";
if (!empty($arr)) {
    $projectId = $arr["project_id"];
}

$upload_dir = wp_upload_dir();
$channel = array('credentials' => $upload_dir['basedir'] . "/dialogflow_settings.json");
$sessionsClient = new SessionsClient($channel);
$session = $sessionsClient->sessionName($projectId, $sessionId ?: uniqid());

    // Create query input
$queryInput = new QueryInput();
if ($message) {
	// Create text input
	$textInput = new TextInput();
	$textInput->setText($message);
	$textInput->setLanguageCode($languageCode);
	$queryInput->setText($textInput);
}
if ($event) {
	$eventInput = new EventInput();
	$eventInput->setName($event);
	$eventInput->setLanguageCode($languageCode);
	$queryInput->setEvent($eventInput);
}
// Get response and close connection
$detectedIntentResponse = $sessionsClient->detectIntent($session, $queryInput);
$sessionsClient->close();
// Serialize Query Result to JSON
$responseBody = $detectedIntentResponse->getQueryResult()->serializeToJsonString();

// Normalize the JSON string by adding null values
$responseBody = allioc_normalizeJSON($responseBody);
echo $responseBody;
die();
}