chore(alchemy): env values validation

apps/alchemy/package.json

@@ -13,6 +13,8 @@
   },
   "dependencies": {
     "alchemy-sdk": "^3.4.1",
-    "dotenv": "^16.4.5"
+    "dotenv": "^16.4.5",
+    "viem": "^2.20.0",
+    "zod": "^3.23.8"
   }
 }

apps/alchemy/src/config.ts

@@ -0,0 +1,24 @@
+import { z } from 'zod'
+import { isAddress } from 'viem'
+import dotenv from 'dotenv'
+
+dotenv.config()
+
+const envSchema = z.object({
+  ALCHEMY_NOTIFY_TOKEN: z.string().min(1, 'Alchemy notify token is required'),
+  ALCHEMY_ACTIVITY_WEBHOOK_URL: z.string().url('Invalid webhook URL'),
+  PRESALE_ADDRESS: z.string().refine(isAddress, 'Invalid Ethereum address'),
+})
+
+const parsedEnv = envSchema.safeParse(process.env)
+if (!parsedEnv.success) {
+  console.error('Environment validation failed:', parsedEnv.error.format())
+  process.exit(1)
+}
+
+
+export const appConfig = {
+  alchemyNotifyToken: parsedEnv.data.ALCHEMY_NOTIFY_TOKEN,
+  alchemyActivityWebhookUrl: parsedEnv.data.ALCHEMY_ACTIVITY_WEBHOOK_URL,
+  presaleAddress: parsedEnv.data.PRESALE_ADDRESS,
+}

apps/alchemy/src/index.ts

@@ -1,27 +1,25 @@
-require('dotenv').config()
 import { Alchemy, Network, WebhookType } from 'alchemy-sdk'
+import { appConfig } from './config'
 
-// authToken is required to use Notify APIs. Found on the top right corner of
-// https://dashboard.alchemy.com/notify.
 async function createAddressActivityNotification() {
   const settings = {
-    authToken: process.env.ALCHEMY_NOTIFY_TOKEN,
-    network: Network.MATIC_MAINNET, // Replace with your network.
+    authToken: appConfig.alchemyNotifyToken,
+    network: Network.MATIC_MAINNET // Replace with your network.
   }
 
   const alchemy = new Alchemy(settings)
   const addressActivityWebhook = await alchemy.notify.createWebhook(
-    // TO DO: You will replace this URL in Step #3 of this guide!
-    'https://launchpad-indexer-ymrgicuyta-uc.a.run.app/alchemy',
+    appConfig.alchemyActivityWebhookUrl,
     WebhookType.ADDRESS_ACTIVITY,
     {
-      // use any address you want to monitor activity on!
-      addresses: ['0x6F76670A66e7909Af9B76f0D84E39317FCc0B2e1'],
-      network: Network.MATIC_MAINNET,
-    },
+      addresses: [appConfig.presaleAddress],
+      network: Network.MATIC_MAINNET
+    }
   )
+  console.log('Address Activity Webhook Details:')
+  console.log(JSON.stringify(addressActivityWebhook, null, 2))
   console.log(
-    'Alchemy Notify address activity notification created, go to https://dashboard.alchemy.com/notify to see details of your custom hook.',
+    'Alchemy Notify address activity notification created, go to https://dashboard.alchemy.com/notify to see details of your custom hook.'
   )
 }