<?php
if(!defined('ABSPATH')) exit;

class WMF_SMTP {

    private static $instance = null;

    public static function instance() {
        if(is_null(self::$instance)) {
            self::$instance = new self();
            self::$instance->hook();
        }
        return self::$instance;
    }

    public function hook() {
        $opts = get_option('wmf_global_settings', array());
        if(!empty($opts['smtp_enabled']) && $opts['smtp_enabled'] === '1' && !empty($opts['smtp_host'])) {
            add_action('phpmailer_init', array($this, 'configure_smtp'));
        }
    }

    public function configure_smtp($phpmailer) {
        $opts = get_option('wmf_global_settings', array());
        if(empty($opts['smtp_host'])) return;

        $phpmailer->isSMTP();
        $phpmailer->Host       = $opts['smtp_host'];
        $phpmailer->Port       = intval($opts['smtp_port'] ?? 587);
        $phpmailer->SMTPSecure = $opts['smtp_enc'] ?? 'tls';

        if(!empty($opts['smtp_user'])) {
            $phpmailer->SMTPAuth = true;
            $phpmailer->Username = $opts['smtp_user'];
            $phpmailer->Password = $opts['smtp_pass'] ?? '';
        } else {
            $phpmailer->SMTPAuth = false;
        }

        // From-Adresse global setzen falls nicht per Mail-Header gesetzt
        if(!empty($opts['from_email'])) {
            $phpmailer->From     = $opts['from_email'];
            $phpmailer->FromName = $opts['from_name'] ?? get_bloginfo('name');
        }

        $phpmailer->SMTPOptions = array(
            'ssl' => array(
                'verify_peer'       => false,
                'verify_peer_name'  => false,
                'allow_self_signed' => true,
            )
        );
    }
}