<?php

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namespace WPForms\Admin\Pages;

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/**

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* SMTP Sub-page.

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*

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* @since 1.5.7

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*/

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class SMTP {

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/**

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* Admin menu page slug.

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*

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* @since 1.5.7

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*

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* @var string

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*/

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const SLUG = 'wpforms-smtp';

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/**

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* Configuration.

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*

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* @since 1.5.7

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*

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* @var array

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*/

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private $config = [

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'lite_plugin' => 'wp-mail-smtp/wp_mail_smtp.php',

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'lite_wporg_url' => 'https://wordpress.org/plugins/wp-mail-smtp/',

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'lite_download_url' => 'https://downloads.wordpress.org/plugin/wp-mail-smtp.zip',

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'pro_plugin' => 'wp-mail-smtp-pro/wp_mail_smtp.php',

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'smtp_settings_url' => 'admin.php?page=wp-mail-smtp',

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'smtp_wizard_url' => 'admin.php?page=wp-mail-smtp-setup-wizard',

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];

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/**

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* Runtime data used for generating page HTML.

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*

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* @since 1.5.7

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*

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* @var array

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*/

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private $output_data = [];

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/**

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* Constructor.

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*

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* @since 1.5.7

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*/

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public function __construct() {

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if ( ! wpforms_current_user_can() ) {

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return;

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}

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$this->hooks();

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}

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/**

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* Hooks.

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*

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* @since 1.5.7

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*/

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public function hooks() {

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if ( wp_doing_ajax() ) {

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add_action( 'wp_ajax_wpforms_smtp_page_check_plugin_status', [ $this, 'ajax_check_plugin_status' ] );

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add_action( 'wpforms_plugin_activated', [ $this, 'smtp_activated' ] );

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}

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// Check what page we are on.

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$page = isset( $_GET['page'] ) ? sanitize_key( wp_unslash( $_GET['page'] ) ) : ''; // phpcs:ignore WordPress.CSRF.NonceVerification

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// Only load if we are actually on the SMTP page.

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if ( $page !== self::SLUG ) {

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return;

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}

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add_action( 'admin_init', [ $this, 'redirect_to_smtp_settings' ] );

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add_filter( 'wpforms_admin_header', '__return_false' );

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add_action( 'wpforms_admin_page', [ $this, 'output' ] );

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add_action( 'admin_enqueue_scripts', [ $this, 'enqueue_assets' ] );

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// Hook for addons.

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do_action( 'wpforms_admin_pages_smtp_hooks' );

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}

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/**

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* Enqueue JS and CSS files.

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*

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* @since 1.5.7

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*/

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public function enqueue_assets() {

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$min = wpforms_get_min_suffix();

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// Lity.

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wp_enqueue_style(

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'wpforms-lity',

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WPFORMS_PLUGIN_URL . 'assets/lib/lity/lity.min.css',

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null,

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'3.0.0'

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);

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wp_enqueue_script(

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'wpforms-lity',

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WPFORMS_PLUGIN_URL . 'assets/lib/lity/lity.min.js',

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[ 'jquery' ],

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'3.0.0',

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true

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);

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wp_enqueue_script(

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'wpforms-admin-page-smtp',

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WPFORMS_PLUGIN_URL . "assets/js/admin/pages/smtp{$min}.js",

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[ 'jquery' ],

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WPFORMS_VERSION,

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true

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);

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wp_localize_script(

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'wpforms-admin-page-smtp',

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'wpforms_pluginlanding',

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$this->get_js_strings()

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);

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}

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/**

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* Set wp_mail_smtp_source option to 'wpforms' on WP Mail SMTP plugin activation.

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*

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* @since 1.8.7

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*

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* @param string $plugin_basename Plugin basename.

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*/

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public function smtp_activated( $plugin_basename ) {

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if ( $plugin_basename !== $this->config['lite_plugin'] ) {

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return;

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}

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// If user came from some certain page to install WP Mail SMTP, we can get the source and write it instead of default one.

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$source = isset( $_POST['source'] ) ? sanitize_text_field( wp_unslash( $_POST['source'] ) ) : 'wpforms'; // phpcs:ignore WordPress.Security.NonceVerification.Missing

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update_option( 'wp_mail_smtp_source', $source );

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}

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/**

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* JS Strings.

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*

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* @since 1.5.7

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*

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* @return array Array of strings.

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*/

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protected function get_js_strings() {

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$error_could_not_install = sprintf(

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wp_kses( /* translators: %s - Lite plugin download URL. */

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__( 'Could not install the plugin automatically. Please <a href="%s">download</a> it and install it manually.', 'wpforms-lite' ),

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[

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'a' => [

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'href' => true,

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],

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]

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),

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esc_url( $this->config['lite_download_url'] )

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);

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$error_could_not_activate = sprintf(

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wp_kses( /* translators: %s - Lite plugin download URL. */

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__( 'Could not activate the plugin. Please activate it on the <a href="%s">Plugins page</a>.', 'wpforms-lite' ),

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[

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'a' => [

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'href' => true,

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],

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]

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),

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esc_url( admin_url( 'plugins.php' ) )

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);

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return [

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'installing' => esc_html__( 'Installing...', 'wpforms-lite' ),

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'activating' => esc_html__( 'Activating...', 'wpforms-lite' ),

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'activated' => esc_html__( 'WP Mail SMTP Installed & Activated', 'wpforms-lite' ),

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'install_now' => esc_html__( 'Install Now', 'wpforms-lite' ),

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'activate_now' => esc_html__( 'Activate Now', 'wpforms-lite' ),

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'download_now' => esc_html__( 'Download Now', 'wpforms-lite' ),

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'plugins_page' => esc_html__( 'Go to Plugins page', 'wpforms-lite' ),

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'error_could_not_install' => $error_could_not_install,

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'error_could_not_activate' => $error_could_not_activate,

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'manual_install_url' => $this->config['lite_download_url'],

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'manual_activate_url' => admin_url( 'plugins.php' ),

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'smtp_settings' => esc_html__( 'Go to SMTP settings', 'wpforms-lite' ),

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'smtp_wizard' => esc_html__( 'Open Setup Wizard', 'wpforms-lite' ),

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'smtp_settings_url' => esc_url( $this->config['smtp_settings_url'] ),

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'smtp_wizard_url' => esc_url( $this->config['smtp_wizard_url'] ),

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];

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}

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/**

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* Generate and output page HTML.

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*

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* @since 1.5.7

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*/

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public function output() {

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echo '<div id="wpforms-admin-smtp" class="wrap wpforms-admin-wrap wpforms-admin-plugin-landing">';

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$this->output_section_heading();

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$this->output_section_screenshot();

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$this->output_section_step_install();

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$this->output_section_step_setup();

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echo '</div>';

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}

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/**

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* Generate and output heading section HTML.

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*

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* @since 1.5.7

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*/

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protected function output_section_heading() {

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// Heading section.

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printf(

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'<section class="top">

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<img class="img-top" src="%1$s" srcset="%2$s 2x" alt="%3$s"/>

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<h1>%4$s</h1>

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<p>%5$s</p>

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</section>',

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esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/wpforms-wpmailsmtp.png' ),

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esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/wpforms-wpmailsmtp@2x.png' ),

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esc_attr__( 'WPForms ♥ WP Mail SMTP', 'wpforms-lite' ),

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esc_html__( 'Making Email Deliverability Easy for WordPress', 'wpforms-lite' ),

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esc_html__( 'WP Mail SMTP fixes deliverability problems with your WordPress emails and form notifications. It\'s built by the same folks behind WPForms.', 'wpforms-lite' )

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);

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}

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/**

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* Generate and output screenshot section HTML.

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*

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* @since 1.5.7

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*/

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protected function output_section_screenshot() {

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// Screenshot section.

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printf(

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'<section class="screenshot">

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<div class="cont">

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<img src="%1$s" alt="%2$s"/>

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<a href="%3$s" class="hover" data-lity></a>

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</div>

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<ul>

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<li>%4$s</li>

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<li>%5$s</li>

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<li>%6$s</li>

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<li>%7$s</li>

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</ul>

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</section>',

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esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/screenshot-tnail.png?ver=' . WPFORMS_VERSION ),

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esc_attr__( 'WP Mail SMTP screenshot', 'wpforms-lite' ),

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esc_url( WPFORMS_PLUGIN_URL . 'assets/images/smtp/screenshot-full.png?ver=' . WPFORMS_VERSION ),

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esc_html__( 'Improves email deliverability in WordPress.', 'wpforms-lite' ),

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esc_html__( 'Used by 2+ million websites.', 'wpforms-lite' ),

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esc_html__( 'Free mailers: SendLayer, SMTP.com, Brevo, Google Workspace / Gmail, Mailgun, Postmark, SendGrid.', 'wpforms-lite' ),

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esc_html__( 'Pro mailers: Amazon SES, Microsoft 365 / Outlook.com, Zoho Mail.', 'wpforms-lite' )

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);

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}

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[268] Fix | Delete

/**

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* Generate and output step 'Install' section HTML.

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*

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* @since 1.5.7

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*/

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protected function output_section_step_install() {

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$step = $this->get_data_step_install();

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if ( empty( $step ) ) {

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return;

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}

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$button_format = '<button class="button %3$s" data-plugin="%1$s" data-action="%4$s" data-source="%5$s">%2$s</button>';

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$button_allowed_html = [

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'button' => [

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'class' => true,

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'data-plugin' => true,

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'data-action' => true,

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'data-source' => true,

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],

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];

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if (

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! $this->output_data['plugin_installed'] &&

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! $this->output_data['pro_plugin_installed'] &&

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! wpforms_can_install( 'plugin' )

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) {

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$button_format = '<a class="link" href="%1$s" target="_blank" rel="nofollow noopener">%2$s <span aria-hidden="true" class="dashicons dashicons-external"></span></a>';

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$button_allowed_html = [

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'a' => [

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'class' => true,

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'href' => true,

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'target' => true,

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'rel' => true,

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],

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'span' => [

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'class' => true,

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'aria-hidden' => true,

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],

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];

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}

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

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$source = isset( $_GET['source'] ) && $_GET['source'] === 'woocommerce' ? 'wpforms-woocommerce' : 'wpforms';

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$button = sprintf( $button_format, esc_attr( $step['plugin'] ), esc_html( $step['button_text'] ), esc_attr( $step['button_class'] ), esc_attr( $step['button_action'] ), esc_attr( $source ) );

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[315] Fix | Delete

printf(

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'<section class="step step-install">

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<aside class="num">

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<img src="%1$s" alt="%2$s" />

[319] Fix | Delete

<i class="loader hidden"></i>

[320] Fix | Delete

</aside>

[321] Fix | Delete

<div>

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<h2>%3$s</h2>

[323] Fix | Delete

<p>%4$s</p>

[324] Fix | Delete

%5$s

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</div>

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</section>',

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esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . $step['icon'] ),

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esc_attr__( 'Step 1', 'wpforms-lite' ),

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esc_html( $step['heading'] ),

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esc_html( $step['description'] ),

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wp_kses( $button, $button_allowed_html )

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);

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}

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[335] Fix | Delete

/**

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* Generate and output step 'Setup' section HTML.

[337] Fix | Delete

*

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* @since 1.5.7

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*/

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protected function output_section_step_setup() {

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$step = $this->get_data_step_setup();

[343] Fix | Delete

[344] Fix | Delete

if ( empty( $step ) ) {

[345] Fix | Delete

return;

[346] Fix | Delete

}

[347] Fix | Delete

[348] Fix | Delete

printf(

[349] Fix | Delete

'<section class="step step-setup %1$s">

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<aside class="num">

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<img src="%2$s" alt="%3$s" />

[352] Fix | Delete

<i class="loader hidden"></i>

[353] Fix | Delete

</aside>

[354] Fix | Delete

<div>

[355] Fix | Delete

<h2>%4$s</h2>

[356] Fix | Delete

<p>%5$s</p>

[357] Fix | Delete

<button class="button %6$s" data-url="%7$s">%8$s</button>

[358] Fix | Delete

</div>

[359] Fix | Delete

</section>',

[360] Fix | Delete

esc_attr( $step['section_class'] ),

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esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . $step['icon'] ),

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esc_attr__( 'Step 2', 'wpforms-lite' ),

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esc_html__( 'Set Up WP Mail SMTP', 'wpforms-lite' ),

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esc_html__( 'Select and configure your mailer.', 'wpforms-lite' ),

[365] Fix | Delete

esc_attr( $step['button_class'] ),

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esc_url( admin_url( $this->config['smtp_wizard_url'] ) ),

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esc_html( $step['button_text'] )

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);

[369] Fix | Delete

}

[370] Fix | Delete

[371] Fix | Delete

/**

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* Step 'Install' data.

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*

[374] Fix | Delete

* @since 1.5.7

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*

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* @return array Step data.

[377] Fix | Delete

*/

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protected function get_data_step_install() {

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[380] Fix | Delete

$step = [];

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[382] Fix | Delete

$step['heading'] = esc_html__( 'Install and Activate WP Mail SMTP', 'wpforms-lite' );

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$step['description'] = esc_html__( 'Install WP Mail SMTP from the WordPress.org plugin repository.', 'wpforms-lite' );

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[385] Fix | Delete

$this->output_data['all_plugins'] = get_plugins();

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$this->output_data['plugin_installed'] = array_key_exists( $this->config['lite_plugin'], $this->output_data['all_plugins'] );

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$this->output_data['pro_plugin_installed'] = array_key_exists( $this->config['pro_plugin'], $this->output_data['all_plugins'] );

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$this->output_data['plugin_activated'] = false;

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$this->output_data['plugin_setup'] = false;

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[391] Fix | Delete

if ( ! $this->output_data['plugin_installed'] && ! $this->output_data['pro_plugin_installed'] ) {

[392] Fix | Delete

$step['icon'] = 'step-1.svg';

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$step['button_text'] = esc_html__( 'Install WP Mail SMTP', 'wpforms-lite' );

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$step['button_class'] = 'button-primary';

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$step['button_action'] = 'install';

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$step['plugin'] = $this->config['lite_download_url'];

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[398] Fix | Delete

if ( ! wpforms_can_install( 'plugin' ) ) {

[399] Fix | Delete

$step['heading'] = esc_html__( 'WP Mail SMTP', 'wpforms-lite' );

[400] Fix | Delete

$step['description'] = '';

[401] Fix | Delete

$step['button_text'] = esc_html__( 'WP Mail SMTP on WordPress.org', 'wpforms-lite' );

[402] Fix | Delete

$step['plugin'] = $this->config['lite_wporg_url'];

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}

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} else {

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$this->output_data['plugin_activated'] = $this->is_smtp_activated();

[406] Fix | Delete

$this->output_data['plugin_setup'] = $this->is_smtp_configured();

[407] Fix | Delete

$step['icon'] = $this->output_data['plugin_activated'] ? 'step-complete.svg' : 'step-1.svg';

[408] Fix | Delete

$step['button_text'] = $this->output_data['plugin_activated'] ? esc_html__( 'WP Mail SMTP Installed & Activated', 'wpforms-lite' ) : esc_html__( 'Activate WP Mail SMTP', 'wpforms-lite' );

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$step['button_class'] = $this->output_data['plugin_activated'] ? 'grey disabled' : 'button-primary';

[410] Fix | Delete

$step['button_action'] = $this->output_data['plugin_activated'] ? '' : 'activate';

[411] Fix | Delete

$step['plugin'] = $this->output_data['pro_plugin_installed'] ? $this->config['pro_plugin'] : $this->config['lite_plugin'];

[412] Fix | Delete

}

[413] Fix | Delete

[414] Fix | Delete

return $step;

[415] Fix | Delete

}

[416] Fix | Delete

[417] Fix | Delete

/**

[418] Fix | Delete

* Step 'Setup' data.

[419] Fix | Delete

*

[420] Fix | Delete

* @since 1.5.7

[421] Fix | Delete

*

[422] Fix | Delete

* @return array Step data.

[423] Fix | Delete

*/

[424] Fix | Delete

protected function get_data_step_setup() {

[425] Fix | Delete

[426] Fix | Delete

$step = [

[427] Fix | Delete

'icon' => 'step-2.svg',

[428] Fix | Delete

];

[429] Fix | Delete

[430] Fix | Delete

if ( $this->output_data['plugin_activated'] ) {

[431] Fix | Delete

$step['section_class'] = '';

[432] Fix | Delete

$step['button_class'] = 'button-primary';

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$step['button_text'] = esc_html__( 'Open Setup Wizard', 'wpforms-lite' );

[434] Fix | Delete

} else {

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$step['section_class'] = 'grey';

[436] Fix | Delete

$step['button_class'] = 'grey disabled';

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$step['button_text'] = esc_html__( 'Start Setup', 'wpforms-lite' );

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}

[439] Fix | Delete

[440] Fix | Delete

if ( $this->output_data['plugin_setup'] ) {

[441] Fix | Delete

$step['icon'] = 'step-complete.svg';

[442] Fix | Delete

$step['button_text'] = esc_html__( 'Go to SMTP settings', 'wpforms-lite' );

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}

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[445] Fix | Delete

return $step;

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}

[447] Fix | Delete

[448] Fix | Delete

/**

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* Ajax endpoint. Check plugin setup status.

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* Used to properly init step 'Setup' section after completing step 'Install'.

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*

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* @since 1.5.7

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*/

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public function ajax_check_plugin_status() {

[455] Fix | Delete

[456] Fix | Delete

// Security checks.

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if (

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! check_ajax_referer( 'wpforms-admin', 'nonce', false ) ||

[459] Fix | Delete

! wpforms_current_user_can()

[460] Fix | Delete

) {

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wp_send_json_error(

[462] Fix | Delete

[

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'error' => esc_html__( 'You do not have permission.', 'wpforms-lite' ),

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]

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);

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}

[467] Fix | Delete

[468] Fix | Delete

$result = [];

[469] Fix | Delete

[470] Fix | Delete

if ( ! $this->is_smtp_activated() ) {

[471] Fix | Delete

wp_send_json_error(

[472] Fix | Delete

[

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'error' => esc_html__( 'Plugin unavailable.', 'wpforms-lite' ),

[474] Fix | Delete

]

[475] Fix | Delete

);

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}

[477] Fix | Delete

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$result['setup_status'] = (int) $this->is_smtp_configured();

[479] Fix | Delete

$result['license_level'] = wp_mail_smtp()->get_license_type();

[480] Fix | Delete

[481] Fix | Delete

// Prevent redirect to the WP Mail SMTP Setup Wizard on the fresh installs.

[482] Fix | Delete

// We need this workaround since WP Mail SMTP doesn't check whether the mailer is already configured when redirecting to the Setup Wizard on the first run.

[483] Fix | Delete

if ( $result['setup_status'] > 0 ) {

[484] Fix | Delete

update_option( 'wp_mail_smtp_activation_prevent_redirect', true );

[485] Fix | Delete

}

[486] Fix | Delete

[487] Fix | Delete

wp_send_json_success( $result );

[488] Fix | Delete

}

[489] Fix | Delete

[490] Fix | Delete

/**

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* Get $phpmailer instance.

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*

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* @since 1.5.7

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* @since 1.6.1.2 Conditionally returns $phpmailer v5 or v6.

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* @since 1.8.7 Use always $phpmailer v6.

[496] Fix | Delete

*

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* @return \PHPMailer|\PHPMailer\PHPMailer\PHPMailer Instance of PHPMailer.

[498] Fix | Delete

*/

[499] Fix | Delete