const crypto = require('crypto');

function generateV2Signature(body, webhookSecret) {
  const timestamp = Math.floor(Date.now() / 1000).toString();
  const payload = `${timestamp}.${body}`;

  const signature = crypto
    .createHmac('sha256', webhookSecret)
    .update(payload)
    .digest('hex');

  return {
    'X-Merchant-Token': 'your_merchant_token_here',
    'X-Signature': `t=${timestamp},v1=${signature}`
  };
}

import time
import hmac
import hashlib

def generate_v2_signature(body_str: str, webhook_secret: str):
    timestamp = str(int(time.time()))
    payload = f"{timestamp}.{body_str}"

    signature = hmac.new(
        webhook_secret.encode('utf-8'),
        payload.encode('utf-8'),
        hashlib.sha256
    ).hexdigest()

    return {
        'X-Merchant-Token': 'your_merchant_token_here',
        'X-Signature': f"t={timestamp},v1={signature}"
    }

<?php

function generateV2Signature($bodyStr, $webhookSecret) {
    $timestamp = (string)time();
    $payload = $timestamp . '.' . $bodyStr;

    $signature = hash_hmac('sha256', $payload, $webhookSecret);

    return [
        'X-Merchant-Token' => 'your_merchant_token_here',
        'X-Signature' => "t={$timestamp},v1={$signature}"
    ];
}
?>

package main

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"fmt"
	"strconv"
	"time"
)

func GenerateV2Signature(body []byte, secret []byte) map[string]string {
	timestamp := strconv.FormatInt(time.Now().Unix(), 10)
	payload := fmt.Sprintf("%s.%s", timestamp, string(body))

	mac := hmac.New(sha256.New, secret)
	mac.Write([]byte(payload))
	signature := hex.EncodeToString(mac.Sum(nil))

	return map[string]string{
		"X-Merchant-Token": "your_merchant_token_here",
		"X-Signature":      fmt.Sprintf("t=%s,v1=%s", timestamp, signature),
	}
}