const crypto = require('crypto');

function verifyWooCommerceWebhook(rawBody, signature, secret) {
  if (!signature || !secret) return false;
  
  const hash = crypto
    .createHmac('sha256', secret)
    .update(rawBody)
    .digest('base64');
  
  try {
    return crypto.timingSafeEqual(
      Buffer.from(signature), 
      Buffer.from(hash)
    );
  } catch {
    return false;
  }
}

const express = require('express');
const app = express();

// CRITICAL: Use raw body for signature verification
app.use('/webhooks/woocommerce', express.raw({ type: 'application/json' }));

app.post('/webhooks/woocommerce', (req, res) => {
  const signature = req.headers['x-wc-webhook-signature'];
  const secret = process.env.WOOCOMMERCE_WEBHOOK_SECRET;
  
  if (!verifyWooCommerceWebhook(req.body, signature, secret)) {
    return res.status(400).send('Invalid signature');
  }
  
  const payload = JSON.parse(req.body);
  const topic = req.headers['x-wc-webhook-topic'];
  
  console.log(`Received ${topic} event:`, payload.id);
  res.status(200).send('OK');
});

import crypto from 'crypto';
import { NextRequest } from 'next/server';

export async function POST(request: NextRequest) {
  const signature = request.headers.get('x-wc-webhook-signature');
  const secret = process.env.WOOCOMMERCE_WEBHOOK_SECRET;
  
  const rawBody = await request.text();
  
  if (!verifyWooCommerceWebhook(rawBody, signature, secret)) {
    return new Response('Invalid signature', { status: 400 });
  }
  
  const payload = JSON.parse(rawBody);
  const topic = request.headers.get('x-wc-webhook-topic');
  
  console.log(`Received ${topic} event:`, payload.id);
  return new Response('OK', { status: 200 });
}

import hmac
import hashlib
import base64
from fastapi import FastAPI, Request, HTTPException

app = FastAPI()

def verify_woocommerce_webhook(raw_body: bytes, signature: str, secret: str) -> bool:
    if not signature or not secret:
        return False
    
    hash_digest = hmac.new(
        secret.encode(),
        raw_body,
        hashlib.sha256
    ).digest()
    expected_signature = base64.b64encode(hash_digest).decode()
    
    return hmac.compare_digest(signature, expected_signature)

@app.post('/webhooks/woocommerce')
async def handle_webhook(request: Request):
    raw_body = await request.body()
    signature = request.headers.get('x-wc-webhook-signature')
    secret = os.getenv('WOOCOMMERCE_WEBHOOK_SECRET')
    
    if not verify_woocommerce_webhook(raw_body, signature, secret):
        raise HTTPException(status_code=400, detail='Invalid signature')
    
    payload = await request.json()
    topic = request.headers.get('x-wc-webhook-topic')
    
    print(f"Received {topic} event: {payload.get('id')}")
    return {'status': 'success'}

WOOCOMMERCE_WEBHOOK_SECRET=your_webhook_secret_key

# Install via npm
npm install -g hookdeck-cli

# Or via Homebrew
brew install hookdeck/hookdeck/hookdeck

hookdeck listen 3000 --path /webhooks/woocommerce