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

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

define('SMTP_HOST', 'smtp.gmail.com');
define('SMTP_PORT', 587);
define('SMTP_USER', 'your-email@gmail.com');
define('SMTP_PASS', 'your-app-password');
define('MAIL_FROM', 'your-email@gmail.com');
define('MAIL_FROM_NAME', 'GyaniGuru by JMC');

function sendMail($to, $subject, $body) {
    $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_STARTTLS;
        $mail->Port       = SMTP_PORT;
        $mail->CharSet    = 'UTF-8';

        $mail->setFrom(MAIL_FROM, MAIL_FROM_NAME);
        $mail->addAddress($to);
        $mail->isHTML(true);
        $mail->Subject = $subject;
        $mail->Body    = $body;

        $mail->send();
        return true;
    } catch (Exception $e) {
        error_log("Mail Error: " . $mail->ErrorInfo);
        return false;
    }
}

function sendOtpEmail($to, $name, $otp) {
    $subject = 'Your OTP for Password Reset — GyaniGuru by JMC';

    $body = '
    <div style="font-family: \'Segoe UI\', Arial, sans-serif; max-width: 520px; margin: 0 auto; background: #f8f7f4; border-radius: 16px; overflow: hidden; border: 1px solid #e0ddd8;">
        <div style="background: linear-gradient(135deg, #3D1A00 0%, #6B3010 100%); padding: 30px 24px; text-align: center;">
            <div style="font-size: 2.5rem; margin-bottom: 4px;">🔱</div>
            <h1 style="color: #D4AF37; margin: 0; font-size: 1.3rem; letter-spacing: 1px;">GYANIGURU by JMC</h1>
            <p style="color: rgba(255,255,255,0.7); margin: 4px 0 0; font-size: .8rem;">AUTHENTIC VEDIC WISDOM</p>
        </div>
        <div style="padding: 32px 24px; background: #fff;">
            <p style="color: #3D1A00; font-size: 1rem; margin: 0 0 4px;">Namaste <strong>' . htmlspecialchars($name) . '</strong>,</p>
            <p style="color: #6B7280; font-size: .9rem; margin-bottom: 20px;">Use the OTP below to reset your password. It expires in 10 minutes.</p>
            <div style="background: #fffbeb; border: 1px solid rgba(212,175,55,.3); border-radius: 12px; padding: 20px; text-align: center; margin-bottom: 20px;">
                <div style="font-size: .75rem; color: #9CA3AF; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 8px;">One-Time Password</div>
                <div style="font-size: 2rem; font-weight: 800; letter-spacing: 8px; color: #3D1A00; font-family: monospace;">' . $otp . '</div>
            </div>
            <p style="color: #9CA3AF; font-size: .78rem; margin: 0;">If you didn\'t request this, please ignore this email.</p>
        </div>
        <div style="background: #f3f1ed; padding: 16px 24px; text-align: center;">
            <p style="color: #9CA3AF; font-size: .72rem; margin: 0;">&copy; ' . date('Y') . ' GyaniGuru by JMC. All rights reserved.</p>
        </div>
    </div>';

    return sendMail($to, $subject, $body);
}