<?php
require('vendor/autoload.php'); // Composer autoload for Razorpay and PHPMailer

use Razorpay\Api\Api;
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

// Razorpay API credentials
$api = new Api('rzp_live_LoCEd8u2DwbRHy', '9yamMaYbnDAx9uftlcH4MSaX');

// Function to send email
function sendEmail($userEmail, $userName, $paymentId, $amount, $adminEmail) {
    $mail = new PHPMailer(true);
    try {
        // Email configuration
        $mail->isSMTP();
        $mail->Host = 'smtp.gmail.com';
        $mail->SMTPAuth = true;
        $mail->Username = 'gyaniguru.jmc@gmail.com';
        $mail->Password = 'aaoawvpnscmlmkgx'; // Use App Password instead
        $mail->SMTPSecure = 'tls';
        $mail->Port = 587;

        // Email to User
        $mail->setFrom('gyaniguru.jmc@gmail.com', 'GyaniGuru');
        $mail->addAddress($userEmail, $userName);
        $mail->isHTML(true);
        $mail->Subject = 'Payment Confirmation - GyaniGuru';
        $mail->Body    = "
            <h2>Payment Confirmation</h2>
            <p>Thank you for your payment!</p>
            <p><strong>Payment ID:</strong> $paymentId</p>
            <p><strong>Amount Paid:</strong> ₹" . ($amount / 100) . "</p>
            <p>We have received your payment and your registration is confirmed.</p>
        ";
        $mail->send();

        // Email to Admin
        $mail->clearAddresses();
        $mail->addAddress($adminEmail, 'Admin');
        $mail->Subject = 'New Payment Received - User Details';
        $mail->Body    = "
            <h2>New Payment Received</h2>
            <p><strong>User Name:</strong> $userName</p>
            <p><strong>User Email:</strong> $userEmail</p>
            <p><strong>Payment ID:</strong> $paymentId</p>
            <p><strong>Amount Paid:</strong> ₹" . ($amount / 100) . "</p>
        ";
        $mail->send();

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

// Process Razorpay Response
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $data = json_decode(file_get_contents('php://input'), true);

    $paymentId = $data['razorpay_payment_id'] ?? '';
    $orderId = $data['razorpay_order_id'] ?? '';
    $signature = $data['razorpay_signature'] ?? '';
    $userName = $data['name'] ?? '';
    $userEmail = $data['email'] ?? '';
    $contact = $data['contact'] ?? '';
    $amount = $data['amount'] ?? 29900; // Get amount from frontend

    try {
        // Verify Razorpay Signature
        $attributes = [
            'razorpay_payment_id' => $paymentId,
            'razorpay_order_id' => $orderId,
            'razorpay_signature' => $signature
        ];
        $api->utility->verifyPaymentSignature($attributes);

        // Send Email
        $adminEmail = 'gyaniguru.jmc@gmail.com';
        $emailSent = sendEmail($userEmail, $userName, $paymentId, $amount, $adminEmail);

        if ($emailSent) {
            echo json_encode(['success' => 'Email sent successfully!']);
        } else {
            echo json_encode(['error' => 'Failed to send email.']);
        }
    } catch (Exception $e) {
        error_log("Razorpay Error: " . $e->getMessage());
        echo json_encode(['error' => 'Payment verification failed.']);
    }
}
?>