<?php
/**
 * @package Dialogflow API V2 by QuantumCloud
 * @Since 9.1.2
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}


/**
 * QCld class
 */
class Qcld_wpbot_dfv2 {

	/**
	 * Constrauct function
	 */
	public function __construct() {

		add_action( 'init', array( $this, 'api' ) );
	}

	/**
	 * API function
	 *
	 * @return void
	 */
	public function api() {

		if ( isset( $_GET['action'] ) && $_GET['action'] == 'qcld_dfv2_api' ) {
			$session_id = 'asd2342sde';
			$language   = get_option( 'qlcd_wp_chatbot_dialogflow_agent_language' );
			// project ID
			$project_ID = get_option( 'qlcd_wp_chatbot_dialogflow_project_id' );
			// Service Account Key json file
			$JsonFileContents = get_option( 'qlcd_wp_chatbot_dialogflow_project_key' );
			if ( $project_ID == '' ) {
				echo json_encode( array( 'error' => 'Project ID is empty' ) );
				exit;
			}
			if ( $JsonFileContents == '' ) {
				echo json_encode( array( 'error' => 'Key is empty' ) );
				exit;
			}
			if ( ! isset( $_POST['dfquery'] ) || $_POST['dfquery'] == '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
				echo json_encode( array( 'error' => 'Query text is not added!' ) );
				exit;
			}
			$query = sanitize_text_field( $_POST['dfquery'] );// phpcs:ignore WordPress.Security.NonceVerification.Missing
			if ( isset( $_POST['sessionid'] ) && $_POST['sessionid'] != '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
				$session_id = sanitize_text_field( $_POST['sessionid'] );// phpcs:ignore WordPress.Security.NonceVerification.Missing
			}

			if ( file_exists( QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php' ) ) {

				require QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php';

				$client = new \Google_Client();
				$client->useApplicationDefaultCredentials();
				$client->setScopes( array( 'https://www.googleapis.com/auth/dialogflow' ) );
				// Convert to array.
				$array = json_decode( $JsonFileContents, true );
				$client->setAuthConfig( $array );

				try {
					$httpClient = $client->authorize();
					$apiUrl     = "https://dialogflow.googleapis.com/v2/projects/{$project_ID}/agent/sessions/{$session_id}:detectIntent";

					$response = $httpClient->request(
						'POST',
						$apiUrl,
						array(
							'json' => array(
								'queryInput'  => array(
									'text' => array(
										'text'         => $query,
										'languageCode' => $language,
									),
								),
								'queryParams' => array( 'timeZone' => '' ),
							),
						)
					);

					$contents = $response->getBody()->getContents();
					echo $contents;
					exit;

				} catch ( Exception $e ) {
					echo json_encode( array( 'error' => $e->getMessage() ) );
					exit;
				}
			} else {
				echo json_encode( array( 'error' => 'API client not found' ) );
				exit;
			}
		}
	}
}
new Qcld_wpbot_dfv2();


add_action(
	'rest_api_init',
	function () {
		register_rest_route(
			'wpbot/v1',
			'/dialogflow_api/',
			array(
				'methods'             => 'POST',
				'callback'            => 'qc_wpbot_dfcallback',
				'permission_callback' => '__return_true',
			)
		);
	}
);

/**
 * QC callback function
 *
 * @param [type] $request
 * @return void
 */
function qc_wpbot_dfcallback( $request ) {

	$postdata = $request->get_body_params();

	$session_id = 'asd2342sde';
	$language   = get_option( 'qlcd_wp_chatbot_dialogflow_agent_language' );
	// project ID
	$project_ID = get_option( 'qlcd_wp_chatbot_dialogflow_project_id' );
	// Service Account Key json file
	$JsonFileContents = get_option( 'qlcd_wp_chatbot_dialogflow_project_key' );
	if ( $project_ID == '' ) {
		echo json_encode( array( 'error' => 'Project ID is empty' ) );
		exit;
	}
	if ( $JsonFileContents == '' ) {
		echo json_encode( array( 'error' => 'Key is empty' ) );
		exit;
	}
	if ( ! isset( $postdata['dfquery'] ) || $postdata['dfquery'] == '' ) {
		echo json_encode( array( 'error' => 'Query text is not added!' ) );
		exit;
	}
	$query = sanitize_text_field( $postdata['dfquery'] );
	if ( isset( $postdata['sessionid'] ) && $postdata['sessionid'] != '' ) {
		$session_id = sanitize_text_field( $postdata['sessionid'] );
	}

	if ( file_exists( QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php' ) ) {

		require QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php';

		$client = new \Google_Client();
		$client->useApplicationDefaultCredentials();
		$client->setScopes( array( 'https://www.googleapis.com/auth/dialogflow' ) );
		// Convert to array
		$array = json_decode( $JsonFileContents, true );
		$client->setAuthConfig( $array );

		try {
			$httpClient = $client->authorize();
			$apiUrl     = "https://dialogflow.googleapis.com/v2/projects/{$project_ID}/agent/sessions/{$session_id}:detectIntent";

			$response = $httpClient->request(
				'POST',
				$apiUrl,
				array(
					'json' => array(
						'queryInput'  => array(
							'text' => array(
								'text'         => $query,
								'languageCode' => $language,
							),
						),
						'queryParams' => array( 'timeZone' => '' ),
					),
				)
			);

			$contents = $response->getBody()->getContents();
			echo $contents;
			exit;

		} catch ( Exception $e ) {
			echo json_encode( array( 'error' => $e->getMessage() ) );
			exit;
		}
	} else {
		echo json_encode( array( 'error' => 'API client not found' ) );
		exit;
	}
}

add_action( 'wp_ajax_qcld_wp_df_api_call', 'qcld_wp_df_api_call' );
add_action( 'wp_ajax_nopriv_qcld_wp_df_api_call', 'qcld_wp_df_api_call' );

function qcld_wp_df_api_call() {
	$session_id = 'asd2342sde';

	if ( isset( $_POST['language'] ) && $_POST['language'] != '' ) {
		$lang = $_POST['language'];
	} else {
		$lang = get_wpbot_locale();
	}

	$language = get_option( 'qlcd_wp_chatbot_dialogflow_agent_language' );
	if ( $language && is_array( $language ) && array_key_exists( $lang, $language ) ) {
		$language = $language[ $lang ];
	}
	// project ID
	$project_ID = get_option( 'qlcd_wp_chatbot_dialogflow_project_id' );
	if ( $project_ID && is_array( $project_ID ) && array_key_exists( $lang, $project_ID ) ) {
		$project_ID = $project_ID[ $lang ];
	}
	// Service Account Key json file
	$JsonFileContents = get_option( 'qlcd_wp_chatbot_dialogflow_project_key' );
	if ( $JsonFileContents && is_array( $JsonFileContents ) && array_key_exists( $lang, $JsonFileContents ) ) {
		$JsonFileContents = $JsonFileContents[ $lang ];
	}

	if ( $project_ID == '' ) {
		echo json_encode( array( 'error' => 'Project ID is empty' ) );
		exit;
	}
	if ( $JsonFileContents == '' ) {
		echo json_encode( array( 'error' => 'Key is empty' ) );
		exit;
	}
	if ( ! isset( $_POST['dfquery'] ) || $_POST['dfquery'] == '' ) {
		echo json_encode( array( 'error' => 'Query text is not added!' ) );
		exit;
	}
	$query = sanitize_text_field( $_POST['dfquery'] );

	if ( isset( $_POST['sessionid'] ) && $_POST['sessionid'] != '' ) {
		$session_id = sanitize_text_field( $_POST['sessionid'] );
	}

	if ( file_exists( QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php' ) ) {

		require QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php';

		$client = new \Google_Client();
		$client->useApplicationDefaultCredentials();
		$client->setScopes( array( 'https://www.googleapis.com/auth/dialogflow' ) );
		// Convert to array
		$array = json_decode( $JsonFileContents, true );
		$client->setAuthConfig( $array );

		try {
			$httpClient = $client->authorize();
			$apiUrl     = "https://dialogflow.googleapis.com/v2beta1/projects/{$project_ID}/agent/sessions/{$session_id}:detectIntent";

			$kbUrl      = "https://dialogflow.googleapis.com/v2beta1/projects/{$project_ID}/knowledgeBases";
			$bkresponse = $httpClient->request( 'GET', $kbUrl );
			$kbcontents = $bkresponse->getBody()->getContents();
			$datakb     = json_decode( $kbcontents, true );
			$kbs        = array();
			if ( isset( $datakb['knowledgeBases'] ) && ! empty( $datakb['knowledgeBases'] ) ) {
				foreach ( $datakb['knowledgeBases'] as $kb ) {
					$kbs[] = $kb['name'];
				}
			}

			$query = array(
				'json' => array(
					'queryInput'  => array(
						'text' => array(
							'text'         => $query,
							'languageCode' => $language,
						),
					),
					'queryParams' => array(
						'timeZone'           => '',
						'knowledgeBaseNames' => $kbs,
					),
				),
			);

			$response = $httpClient->request( 'POST', $apiUrl, $query );

			$contents = $response->getBody()->getContents();
			echo $contents;
			exit;

		} catch ( Exception $e ) {
			echo json_encode( array( 'error' => $e->getMessage() ) );
			exit;
		}
	} else {
		echo json_encode( array( 'error' => 'API client not found' ) );
		exit;
	}
	die();
}

function qcld_wpbot_df_cx_agent( $force, $lang ) {

	$session_id = 'asd2342sde';

	$language = get_option( 'qlcd_wp_chatbot_dialogflow_agent_language' );
	if ( $language && is_array( $language ) && array_key_exists( $lang, $language ) ) {
		$language = $language[ $lang ];
	}
	// project ID
	$project_ID = get_option( 'qlcd_wp_chatbot_dialogflow_project_id' );
	if ( $project_ID && is_array( $project_ID ) && array_key_exists( $lang, $project_ID ) ) {
		$project_ID = $project_ID[ $lang ];
	}
	// Service Account Key json file
	$JsonFileContents = get_option( 'qlcd_wp_chatbot_dialogflow_project_key' );
	if ( $JsonFileContents && is_array( $JsonFileContents ) && array_key_exists( $lang, $JsonFileContents ) ) {
		$JsonFileContents = $JsonFileContents[ $lang ];
	}

	if ( $project_ID == '' ) {
		return ( array( 'error' => 'Project ID is empty' ) );
	}
	if ( $JsonFileContents == '' ) {
		return ( array( 'error' => 'Key is empty' ) );
	}

	if ( isset( $_POST['sessionid'] ) && $_POST['sessionid'] != '' ) {
		$session_id = sanitize_text_field( $_POST['sessionid'] );
	}

	if ( ! $force && get_transient( 'dialogflow_cx_agents_' . $lang ) ) {
		return get_transient( 'dialogflow_cx_agents_' . $lang );
	}
	if ( file_exists( QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php' ) ) {

		require QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php';

		$client = new \Google_Client();
		$client->useApplicationDefaultCredentials();
		$client->setScopes( array( 'https://www.googleapis.com/auth/dialogflow' ) );
		// Convert to array
		$array = json_decode( $JsonFileContents, true );
		$client->setAuthConfig( $array );

		try {
			$httpClient = $client->authorize();
			$apiUrl     = "https://dialogflow.googleapis.com/v3beta1/projects/{$project_ID}/locations/global/agents";

			$response = $httpClient->request( 'GET', $apiUrl );
			$contents = $response->getBody()->getContents();

			set_transient( 'dialogflow_cx_agents_' . $lang, json_decode( $contents, true ), 12 * HOUR_IN_SECONDS );
			return json_decode( $contents, true );

		} catch ( Exception $e ) {
			return ( array( 'error' => $e->getMessage() ) );
		}
	}
}

add_action( 'wp_ajax_qcld_wp_df_api_cx', 'qcld_wp_df_api_cx' );
add_action( 'wp_ajax_nopriv_qcld_wp_df_api_cx', 'qcld_wp_df_api_cx' );

function qcld_wp_df_api_cx() {

	$session_id = 'asd2342sde';

	if ( isset( $_POST['language'] ) && $_POST['language'] != '' ) {
		$lang = $_POST['language'];
	} else {
		$lang = get_wpbot_locale();
	}

	$name                = sanitize_text_field( $_POST['name'] );
	$timezone            = sanitize_text_field( $_POST['timezone'] );
	$defaultlangaugecode = sanitize_text_field( $_POST['defaultlanguageCode'] );

	$language = get_option( 'qlcd_wp_chatbot_dialogflow_agent_language' );
	if ( $language && is_array( $language ) && array_key_exists( $lang, $language ) ) {
		$language = $language[ $lang ];
	}
	// project ID.
	$project_ID = get_option( 'qlcd_wp_chatbot_dialogflow_project_id' );
	if ( $project_ID && is_array( $project_ID ) && array_key_exists( $lang, $project_ID ) ) {
		$project_ID = $project_ID[ $lang ];
	}
	// Service Account Key json file.
	$JsonFileContents = get_option( 'qlcd_wp_chatbot_dialogflow_project_key' );
	if ( $JsonFileContents && is_array( $JsonFileContents ) && array_key_exists( $lang, $JsonFileContents ) ) {
		$JsonFileContents = $JsonFileContents[ $lang ];
	}

	if ( $project_ID == '' ) {
		echo json_encode( array( 'error' => 'Project ID is empty' ) );
		exit;
	}
	if ( $JsonFileContents == '' ) {
		echo json_encode( array( 'error' => 'Key is empty' ) );
		exit;
	}
	if ( ! isset( $_POST['dfquery'] ) || $_POST['dfquery'] == '' ) {
		echo json_encode( array( 'error' => 'Query text is not added!' ) );
		exit;
	}
	$query = sanitize_text_field( $_POST['dfquery'] );

	if ( isset( $_POST['sessionid'] ) && $_POST['sessionid'] != '' ) {
		$session_id = sanitize_text_field( $_POST['sessionid'] );
	}

	if ( file_exists( QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php' ) ) {

		require QCLD_wpCHATBOT_GC_DIRNAME . '/autoload.php';

		$client = new \Google_Client();
		$client->useApplicationDefaultCredentials();
		$client->setScopes( array( 'https://www.googleapis.com/auth/dialogflow' ) );
		// Convert to array.
		$array = json_decode( $JsonFileContents, true );
		$client->setAuthConfig( $array );

		try {
			$httpClient = $client->authorize();
			$apiUrl     = "https://dialogflow.googleapis.com/v3beta1/{$name}/sessions/{$session_id}:detectIntent";
			$query      = array(
				'json' => array(
					'queryInput'  => array(
						'text'         => array(
							'text' => $query,
						),
						'languageCode' => $language,
					),
					'queryParams' => array(
						'timeZone' => $timezone,
					),
				),
			);
			$response   = $httpClient->request( 'POST', $apiUrl, $query );

			$contents = $response->getBody()->getContents();

			echo $contents;
			exit;

		} catch ( Exception $e ) {
			echo json_encode( array( 'error' => $e->getMessage() ) );
			exit;
		}
	} else {
		echo json_encode( array( 'error' => 'API client not found' ) );
		exit;
	}
	die();
}