<?php
require_once __DIR__ . '/config.php';
require_once __DIR__ . '/../vendor/phpmailer/PHPMailer.php';
require_once __DIR__ . '/../vendor/phpmailer/SMTP.php';
require_once __DIR__ . '/../vendor/phpmailer/Exception.php';

use PHPMailer\PHPMailer\PHPMailer;

function sendEmail(string $subject, string $htmlBody, ?string $toEmail = null): bool {
    $mail = new PHPMailer(true);
    try {
        $mail->isSMTP();
        $mail->Host = SMTP_HOST;
        $mail->SMTPAuth = true;
        $mail->Username = SMTP_USER;
        $mail->Password = SMTP_PASS;
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
        $mail->Port = SMTP_PORT;
        $mail->CharSet = 'UTF-8';

        $mail->setFrom(SMTP_USER, SMTP_FROM_NAME);
        $mail->addAddress($toEmail ?? SMTP_USER);

        $mail->isHTML(true);
        $mail->Subject = $subject;
        $mail->Body = $htmlBody;
        $mail->AltBody = strip_tags($htmlBody);

        $mail->send();
        return true;
    } catch (\Exception $e) {
        error_log('Email error: ' . $e->getMessage());
        return false;
    }
}

function buildWhatsAppLink(string $serviceName, string $clientName, string $phone): string {
    $message = "Hola, soy *{$clientName}* y estoy interesado/a en el servicio de *{$serviceName}*. Mi teléfono es {$phone}. Acabo de enviar mi solicitud por la página web.";
    return 'https://wa.me/' . WHATSAPP_NUMBER . '?text=' . urlencode($message);
}