<?php

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namespace WPForms\Integrations\LiteConnect;

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use WPForms\Admin\Notice;

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use WPForms\Helpers\Transient;

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use WPForms\Tasks\Tasks;

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/**

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* Class Integration.

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*

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* Base integration between Lite Connect API and WPForms.

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*

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* @since 1.7.4

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*/

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class Integration extends API {

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/**

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* Authentication data.

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*

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* @since 1.7.4

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*

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* @var array

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*/

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protected $auth = [];

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/**

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* Option name to store the total count of Lite Connect entries.

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*

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* @since 1.7.4

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*

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* @var string

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*/

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const LITE_CONNECT_ENTRIES_COUNT_OPTION = 'wpforms_lite_connect_entries_count';

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/**

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* Post meta name to store the total count of Lite Connect form entries.

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*

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* @since 1.7.9

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*

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* @var string

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*/

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const LITE_CONNECT_FORM_ENTRIES_COUNT_META = 'wpforms_lite_connect_form_entries_count';

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/**

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* Integration constructor.

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*

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* @since 1.7.4

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*/

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public function __construct() {

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static $updated;

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parent::__construct();

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$this->hooks();

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// Update the site key and access token.

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if (

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! $updated &&

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( is_admin() && ! wp_doing_ajax() ) &&

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( ( wpforms()->is_pro() && self::get_enabled_since() ) || LiteConnect::is_enabled() )

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) {

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$this->maybe_update_access_token();

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$this->update_keys();

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$updated = true;

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}

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}

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/**

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* Hooks.

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*

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* @since 1.7.5

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*/

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private function hooks() {

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add_action( 'admin_init', [ $this, 'max_attempts_notice' ], 10 );

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}

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/**

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* Update the site key and access token if they do not exist.

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*

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* @since 1.7.4

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*/

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public function update_keys() {

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if ( isset( $this->auth['site_key'], $this->auth['access_token'] ) ) {

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return;

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}

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$site_key = $this->get_site_key();

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$this->auth = [

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'site_key' => $site_key,

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'access_token' => $this->get_access_token( $site_key ),

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];

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}

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/**

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* Get the site key.

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*

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* @since 1.7.4

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*

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* @return string|false|array The site key, or false on error.

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*/

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protected function get_site_key() {

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// At first, try to get the site key from the wp-config.php file.

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$debug_site_key = $this->get_debug_setting( 'key' );

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if ( $debug_site_key !== false ) {

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return $debug_site_key;

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}

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// If site key already exists, then we won't need to regenerate it.

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$curr_key = wpforms_setting( 'site', false, self::get_option_name() );

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if ( ! empty( $curr_key['key'] ) ) {

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return $curr_key['key'];

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}

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// Generate the site key.

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return $this->generate_site_key();

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}

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/**

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* Get the access token.

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*

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* @since 1.7.4

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*

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* @param string|array $site_key The site key.

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* @param bool $force True to force generate a new access token.

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*

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* @return string|false|void The access token, or false on error.

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*/

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protected function get_access_token( $site_key, $force = false ) {

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if ( ! $site_key ) {

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return false;

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}

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$curr_token = wpforms_setting( 'access_token', false, self::get_option_name() );

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// It won't regenerate the access token if $force is false, and the current token is not expired.

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if ( $force === false && isset( $curr_token['expires_at'] ) && (int) $curr_token['expires_at'] - time() > 0 ) {

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return $curr_token['access_token'];

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}

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// Generate the access token.

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$response = $this->generate_access_token( $site_key );

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if ( $response ) {

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$response = json_decode( $response, true );

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if ( isset( $response['access_token'] ) ) {

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$settings = get_option( self::get_option_name(), [] );

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$settings['access_token'] = $response;

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update_option( self::get_option_name(), $settings );

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// Create task to refresh access token in 6 days.

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$this->refresh_access_token_task();

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return $response['access_token'];

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}

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wpforms_log(

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'Lite Connect: unable to generate access token',

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[

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'response' => $response,

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'request' => [

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'domain' => $this->domain,

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'site_id' => $this->site_id,

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'wp_version' => get_bloginfo( 'version' ),

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],

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],

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[ 'type' => [ 'error' ] ]

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);

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}

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return false;

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}

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/**

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* Create a task to refresh the access token.

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*

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* @since 1.7.4

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*/

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private function refresh_access_token_task() {

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$tasks = wpforms()->obj( 'tasks' );

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if ( $tasks instanceof Tasks && ! $tasks->is_scheduled( RefreshAccessTokenTask::LITE_CONNECT_TASK ) ) {

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( new RefreshAccessTokenTask() )->create();

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}

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}

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/**

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* Get the name for the Lite Connect's option.

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*

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* @since 1.7.4

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*

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* @return string

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*/

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public static function get_option_name() {

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if ( self::is_staging() ) {

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return API::STAGING_LITE_CONNECT_OPTION;

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}

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return API::LITE_CONNECT_OPTION;

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}

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/**

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* Get the Lite Connect entries count.

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*

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* @since 1.7.4

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*

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* @return int The entries count.

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*/

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public static function get_entries_count() {

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return (int) get_option( self::LITE_CONNECT_ENTRIES_COUNT_OPTION, 0 );

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}

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/**

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* Get the Lite Connect form entries count.

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*

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* @since 1.7.9

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*

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* @param int $form_id The form ID.

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*

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* @return int The form entries count.

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*/

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public static function get_form_entries_count( $form_id ) {

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return (int) get_post_meta( $form_id, self::LITE_CONNECT_FORM_ENTRIES_COUNT_META, true );

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}

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/**

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* Get the Lite Connect new entries count (since previous import).

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*

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* @since 1.7.4

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*

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* @return int The new entries count.

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*/

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public static function get_new_entries_count() {

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// Get current total entries count.

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$count = self::get_entries_count();

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// Reduces the entries that were already imported previously from the count.

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$import = wpforms_setting( 'import', false, self::get_option_name() );

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$prev_count = 0;

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if ( isset( $import['previous_import_count'] ) ) {

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$prev_count = (int) $import['previous_import_count'];

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}

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if ( isset( $import['previous_failed_count'] ) ) {

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$prev_count += (int) $import['previous_failed_count'];

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}

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return $count < $prev_count ? 0 : $count - $prev_count;

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}

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/**

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* Maybe restart the import flag (for when the user re-upgrades to pro).

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*

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* @since 1.7.4

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*/

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public static function maybe_restart_import_flag() {

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$settings = get_option( self::get_option_name(), [] );

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if ( empty( $settings ) ) {

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return;

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}

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$status = isset( $settings['import']['status'] ) ? $settings['import']['status'] : false;

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if ( $status === 'done' ) {

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$previous_imported_entries = Transient::get( 'lite_connect_imported_entries' );

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$settings['import']['previous_import_count'] = is_array( $previous_imported_entries ) ? count( $previous_imported_entries ) : 0;

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$previous_failed_entries = Transient::get( 'lite_connect_failed_entries' );

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$settings['import']['previous_failed_count'] = is_array( $previous_failed_entries ) ? count( $previous_failed_entries ) : 0;

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}

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self::maybe_set_entries_count();

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// Reset import status to be able to restart import process.

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unset(

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$settings['import']['status'],

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$settings['import']['user_notified']

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);

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update_option( self::get_option_name(), $settings );

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if ( Transient::get( 'lite_connect_error' ) !== false ) {

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Transient::delete( 'lite_connect_error' );

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}

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}

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/**

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* Get the Lite Connect enabled since timestamp.

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*

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* @since 1.7.4

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*

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* @return bool|int

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*/

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public static function get_enabled_since() {

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return wpforms_setting( LiteConnect::SETTINGS_SLUG . '-since' );

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}

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/**

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* Get the Email of the user who enabled Lite Connect.

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*

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* @since 1.7.4

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*

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* @return bool|string

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*/

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public static function get_enabled_email() {

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return wpforms_setting( LiteConnect::SETTINGS_SLUG . '-email' );

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}

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/**

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* Normalize Lite Connect entries counter when their value is wrong.

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*

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* @since 1.7.4

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*/

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public static function maybe_set_entries_count() {

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$settings = get_option( self::get_option_name(), [] );

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if ( empty( $settings ) ) {

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return;

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}

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$previous_import_count = isset( $settings['import']['previous_import_count'] ) ? (int) $settings['import']['previous_import_count'] : 0;

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$previous_failed_count = isset( $settings['import']['previous_failed_count'] ) ? (int) $settings['import']['previous_failed_count'] : 0;

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$previous_import_count += $previous_failed_count;

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// When the entries counter was manually deleted from options OR it was modified by another process,

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// we are setting the counter to the value of the previous imported entries.

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// In this way, the next form submission will increase counter properly, and user will see value of the backed up entries.

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// Obviously, this solution is not perfect, but we don't have another source of the total entries count.

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if ( $previous_import_count > self::get_entries_count() ) {

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update_option( self::LITE_CONNECT_ENTRIES_COUNT_OPTION, $previous_import_count );

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}

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}

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/**

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* Show the Lite Connect notice about the max attempts to generate the API key.

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*

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* @since 1.7.5

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*/

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public function max_attempts_notice() {

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$attempts_count = get_option( self::GENERATE_KEY_ATTEMPT_COUNTER_OPTION, 0 );

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$notice_text = sprintf(

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wp_kses( /* translators: %s - WPForms documentation link. */

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__( 'Your form entries can’t be backed up because WPForms can’t connect to the backup server. If you’d like to back up your entries, find out how to <a href="%s" target="_blank" rel="noopener noreferrer">fix entry backup issues</a>.', 'wpforms-lite' ),

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[

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'a' => [

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'href' => [],

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'target' => [],

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'rel' => [],

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],

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]

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),

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wpforms_utm_link( 'https://wpforms.com/docs/how-to-use-lite-connect-for-wpforms/#backup-issues', 'Admin Notice' )

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);

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if ( $attempts_count >= self::MAX_GENERATE_KEY_ATTEMPTS ) {

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Notice::warning(

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$notice_text,

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[

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'dismiss' => Notice::DISMISS_GLOBAL,

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'slug' => 'max_attempts',

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]

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);

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}

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}

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/**

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* Maybe update access token.

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*

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* @since 1.7.6

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*/

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public function maybe_update_access_token() {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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$action = isset( $_GET['wpforms_lite_connect_action'] ) ? sanitize_key( $_GET['wpforms_lite_connect_action'] ) : '';

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if (

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! isset( $_GET['_wpnonce'] ) ||

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$action !== 'update-access-token' ||

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! current_user_can( 'manage_options' ) ||

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! wp_verify_nonce( sanitize_key( $_GET['_wpnonce'] ), 'wpforms_lite_connect_action' )

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) {

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return;

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}

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$this->get_access_token( $this->get_site_key(), true );

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}

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/**

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* Determine if Lite Connect staging is used.

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*

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* @since 1.9.1

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*

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* @return bool

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*/

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private static function is_staging(): bool {

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return defined( 'WPFORMS_LITE_CONNECT_STAGING' ) && WPFORMS_LITE_CONNECT_STAGING;

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}

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/**

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* Get the site credentials.

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*

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* @since 1.9.1

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*

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* @return array

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*/

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public static function get_site_credentials(): array {

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$settings = (array) get_option( self::get_option_name(), [] );

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if ( ! empty( $settings['site']['id'] ) && ! empty( $settings['access_token']['access_token'] ) ) {

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return [

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'site_id' => $settings['site']['id'],

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'access_token' => $settings['access_token']['access_token'],

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];

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}

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$instance = ( new self() );

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// Try to get the site id from the wp-config.php file.

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$debug_site_id = $instance->get_debug_setting( 'id' );

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if ( empty( $debug_site_id ) ) {

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return [];

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}

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$access_token = $instance->get_access_token( $instance->get_site_key() );

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if ( ! $access_token ) {

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return [];

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}

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return [

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'site_id' => $debug_site_id,

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'access_token' => $access_token,

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'is_production' => ! self::is_staging(),

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];

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}

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}

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