<?php

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

class Mailer {
    private static $instance = null;
    private $mailer;
    private $logger;

    private function __construct() {
        $this->mailer = new PHPMailer(true);
        $this->logger = AppLogger::getInstance();
        
        // Server settings
        $this->mailer->isSMTP();
        $this->mailer->Host = SMTP_HOST;
        $this->mailer->SMTPAuth = true;
        $this->mailer->Username = SMTP_USERNAME;
        $this->mailer->Password = SMTP_PASSWORD;
        $this->mailer->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
        $this->mailer->Port = SMTP_PORT;
        $this->mailer->CharSet = 'UTF-8';

        // Default sender
        $this->mailer->setFrom(SMTP_FROM_EMAIL, SMTP_FROM_NAME);
    }

    public static function getInstance() {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    public function sendOrderConfirmation($order, $user) {
        try {
            $this->mailer->addAddress($user['email'], $user['name']);
            $this->mailer->Subject = 'تأكيد الطلب - ShubraVeil';
            
            // Load email template
            $template = file_get_contents(__DIR__ . '/../templates/emails/order-confirmation.html');
            
            // Replace placeholders
            $template = str_replace('{ORDER_ID}', $order['id'], $template);
            $template = str_replace('{USER_NAME}', $user['name'], $template);
            $template = str_replace('{ORDER_TOTAL}', $order['total'], $template);
            
            $this->mailer->isHTML(true);
            $this->mailer->Body = $template;
            
            $this->mailer->send();
            $this->logger->info('Order confirmation email sent', ['order_id' => $order['id']]);
            return true;
        } catch (Exception $e) {
            $this->logger->error('Failed to send order confirmation email', [
                'error' => $e->getMessage(),
                'order_id' => $order['id']
            ]);
            return false;
        }
    }

    public function sendPasswordReset($user, $token) {
        try {
            $this->mailer->addAddress($user['email'], $user['name']);
            $this->mailer->Subject = 'إعادة تعيين كلمة المرور - ShubraVeil';
            
            $resetLink = SITE_URL . '/reset-password?token=' . $token;
            
            // Load email template
            $template = file_get_contents(__DIR__ . '/../templates/emails/password-reset.html');
            
            // Replace placeholders
            $template = str_replace('{USER_NAME}', $user['name'], $template);
            $template = str_replace('{RESET_LINK}', $resetLink, $template);
            
            $this->mailer->isHTML(true);
            $this->mailer->Body = $template;
            
            $this->mailer->send();
            $this->logger->info('Password reset email sent', ['user_id' => $user['id']]);
            return true;
        } catch (Exception $e) {
            $this->logger->error('Failed to send password reset email', [
                'error' => $e->getMessage(),
                'user_id' => $user['id']
            ]);
            return false;
        }
    }
}