<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

require_once __DIR__ . '/../../../vendor/autoload.php';

// Load .env file
$dotenvPath = __DIR__ . '/../../../';
if(file_exists($dotenvPath . '.env')){
    try{
        $dotenv = Dotenv\Dotenv::createImmutable($dotenvPath);
        $dotenv->safeLoad();
    }catch(Exception $e){}
}

function env($k, $default = null){
    $val = $_ENV[$k] ?? null;
    if($val === null || $val === ''){ $val = getenv($k); }
    return ($val !== false && $val !== '') ? $val : $default;
}

function send_mail_phpmailer($to, $subject, $body, $isHtml = false){
    try{
        $mail = new PHPMailer(true);
        
        $smtpHost = env('SMTP_HOST');
        $smtpPort = env('SMTP_PORT', '587');
        $smtpUser = env('SMTP_USER');
        $smtpPass = env('SMTP_PASS');
        $smtpEnc  = env('SMTP_ENCRYPTION', 'tls');
        $from     = env('MAIL_FROM', 'no-reply@localhost');
        $fromName = env('MAIL_FROM_NAME', 'WebGIS');
        
        if($smtpHost){
            $mail->isSMTP();
            $mail->Host       = gethostbyname($smtpHost); // Force IPv4
            $mail->SMTPAuth   = true;
            $mail->Username   = $smtpUser;
            $mail->Password   = $smtpPass;
            $mail->Port       = intval($smtpPort);
            
            // Bypass SSL verification issues with IP hostname in Docker
            $mail->SMTPOptions = array(
                'ssl' => array(
                    'verify_peer' => false,
                    'verify_peer_name' => false,
                    'allow_self_signed' => true
                )
            );
            
            if(strtolower($smtpEnc) === 'ssl'){
                $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
            } elseif(strtolower($smtpEnc) === 'tls'){
                $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
            } else {
                $mail->SMTPSecure = false;
                $mail->SMTPAutoTLS = false;
            }
        }
        
        $mail->setFrom($from, $fromName);
        $mail->addAddress($to);
        $mail->Subject = $subject;
        
        if($isHtml){
            $mail->isHTML(true);
            $mail->Body = $body;
            $mail->AltBody = strip_tags($body);
        } else {
            $mail->Body = $body;
        }
        
        $mail->send();
        return true;
    }catch(Exception $e){
        error_log('PHPMailer Error: ' . $e->getMessage());
        return false;
    }
}

function send_mail_notify($to, $subject, $body, $isHtml = false){
    return send_mail_phpmailer($to, $subject, $body, $isHtml);
}

function send_bulk_admin_notification($subject, $body, $conn, $isHtml = false){
    try{
        $st = $conn->prepare("SELECT email FROM users WHERE role='admin' AND status='active'");
        if(!$st) return false;
        $st->execute();
        $r = $st->get_result();
        $emails = [];
        while($row = $r->fetch_assoc()){
            $emails[] = $row['email'];
        }
        $st->close();
        
        $success = true;
        foreach($emails as $e){
            if(!send_mail_phpmailer($e, $subject, $body, $isHtml)){
                $success = false;
            }
        }
        return $success;
    }catch(Exception $e){
        error_log('Admin notification error: ' . $e->getMessage());
        return false;
    }
}

?>