feat: scaffold webhooks

Author: damilola-paystack

src/index.ts

@@ -3,6 +3,7 @@ import { Hono } from 'hono'
 import plansRouter from './routes/plans.js'
 import { showRoutes } from 'hono/dev'
 import transactionRouter from './routes/transaction.js'
+import webhookRouter from './routes/webhooks.js'
 
 const app = new Hono()
 
@@ -12,6 +13,7 @@ app.get('/', (c) => {
 
 app.route("/plan", plansRouter)
 app.route("/transaction", transactionRouter)
+app.route("/webhook", webhookRouter)
 
 // To list all routes
 showRoutes(app)

src/routes/webhooks.ts

@@ -0,0 +1,57 @@
+import 'dotenv/config';
+import { Hono } from "hono";
+import { db } from '../db.js';
+import { zValidator } from '@hono/zod-validator';
+import { Transaction } from '../schema/index.js';
+import { createHmac } from 'node:crypto';
+
+const webhookRouter = new Hono()
+
+webhookRouter.post("/", async (c) => {
+  const secretKey = process.env.PAYSTACK_SECRET_KEY
+  const body = await c.req.json()
+  const hash = createHmac('sha512', secretKey!).update(JSON.stringify(body)).digest('hex')
+  const signature = c.req.header('x-paystack-signature')
+
+  if (hash !== signature) {
+    return c.json({}, 422)
+  }
+
+  switch (body.event) {
+    case "charge.success":
+      // handle successful transaction
+      console.log("In charge.success")
+      break;
+    case "subscription.create":
+      // handle subscription creation
+      console.log("In subscription.create")
+      break;
+    case "invoice.create":
+      // handle invoice creation
+      console.log("In invoice.create")
+      break;
+    case "invoice.payment_failed":
+      // handle invoice payment failure
+      console.log("In invoice.payment_failed")
+      break;
+    case "invoice.update":
+      // handle invoice update
+      console.log("In invoice.update")
+      break;
+    case "subscription.disable":
+      // handle subscription disabling
+      console.log("In subscription.disable")
+      break;
+    case "subscription.not_renew":
+      // handle subscription not renewing
+      console.log("In subscription.not_renew")
+      break;
+    default:
+      break;
+  }
+
+  return c.json({}, 200)
+})
+
+
+export default webhookRouter