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<?php
namespace SolidWP\Mail\Hooks;
use PHPMailer\PHPMailer\SMTP;
use SolidWP\Mail\AbstractController;
use SolidWP\Mail\App;
use SolidWP\Mail\Connectors\ConnectionPool;
use SolidWP\Mail\Connectors\ConnectorSMTP;
use SolidWP\Mail\Repository\ProvidersRepository;
use SolidWP\Mail\Repository\SettingsRepository;
use SolidWP\Mail\SolidMailer;
/**
* Class MailerController
*
* This class is responsible for handling email functionality within the Solid_SMTP plugin.
*
* @package Solid_SMTP\Controller
*/
class PHPMailer extends AbstractController {
/**
* The repository for managing SMTP mailers.
*
* @var ProvidersRepository
*/
protected ProvidersRepository $providers_repository;
/**
* The repository for getting settings.
*
* @var SettingsRepository
*/
protected SettingsRepository $settings_repository;
/**
* Constructor for the class.
*
* @param ProvidersRepository $providers_repository The repository instance for managing providers.
* @param SettingsRepository $settings_repository The settings repository instance.
*/
public function __construct(
ProvidersRepository $providers_repository,
SettingsRepository $settings_repository
) {
$this->providers_repository = $providers_repository;
$this->settings_repository = $settings_repository;
}
/**
* Register hooks.
*
* Implementing the InterfaceController interface, this method registers hooks related to email functionality.
*
* @return void
*/
public function register_hooks() {
add_filter( 'pre_wp_mail', [ $this, 'init_solidmail_mailer' ] );
add_action( 'phpmailer_init', [ $this, 'set_up_connection_pool' ], 9999 );
add_action( 'wp_mail_failed', [ $this, 'maybe_capture_sending_error' ] );
}
/**
* Initializes the SolidMail mailer integration. Return null so the default behavior continue to run.
*
* @since 2.1.3
*
* @return null
*/
public function init_solidmail_mailer() {
$active_providers = $this->providers_repository->get_active_providers();
$default_provider = $this->providers_repository->get_default_provider();
if ( ! $default_provider instanceof ConnectorSMTP && count( $active_providers ) === 0 ) {
// if there is no active providers and default provider, do nothing.
return null;
}
// Declare the phpmailer instance before the wp_mail does it.
global $phpmailer;
if ( ! $phpmailer instanceof SolidMailer ) {
require_once ABSPATH . WPINC . '/PHPMailer/PHPMailer.php';
require_once ABSPATH . WPINC . '/PHPMailer/SMTP.php';
require_once ABSPATH . WPINC . '/PHPMailer/Exception.php';
require_once WPSMTP_PATH . 'inc/wp-phpmailer-compatibility.php';
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
$phpmailer = new SolidMailer( true );
}
return null;
}
/**
* Captures the sending error if one occurs.
*
* This function sets the PHPMailer send error variable in the application with the provided WP_Error object.
*
* @param \WP_Error $error The error object to capture.
*/
public function maybe_capture_sending_error( \WP_Error $error ) {
App::setVar( 'phpmailer_send_error', $error );
}
/**
* Configure PHPMailer for SMTP.
*
* This method is invoked when PHPMailer is initialized to configure it for SMTP usage.
*
* @param \PHPMailer\PHPMailer\PHPMailer $phpmailer The PHPMailer instance.
*
* @return void
*/
public function set_up_connection_pool( \PHPMailer\PHPMailer\PHPMailer $phpmailer ): void {
if ( ! $phpmailer instanceof SolidMailer ) {
return;
}
$connection_pool = new ConnectionPool();
$active_connections = $this->providers_repository->get_active_providers();
// 1. Add connections with a full email match
foreach ( $active_connections as $connection ) {
if ( $connection->get_from_email() === $phpmailer->From ) {
$connection_pool->append( $connection );
}
}
// 2. Use a default connection if we could not find at least one
// or prioritize the default connection if we want to add unmatched active connections
$default_connection = $this->providers_repository->get_default_provider();
if ( $connection_pool->count() === 0 || $this->settings_repository->use_unmatched_connections() ) {
$connection_pool->append( $default_connection );
}
// 3. Add unmatched active connections if enabled
if ( $this->settings_repository->use_unmatched_connections() ) {
foreach ( $active_connections as $connection ) {
$connection_pool->append( $connection );
}
}
$phpmailer->init_pool( $connection_pool );
}
/**
* If Solid Mail is used for the current request
*
* @return bool
*/
public static function is_solid_mail_configured(): bool {
global $phpmailer;
return $phpmailer instanceof SolidMailer && $phpmailer->get_connection() instanceof ConnectorSMTP;
}
}
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