chore: add env config

src/main.ts

@@ -1,4 +1,4 @@
-import { discordEvents } from "./services/discord-service.js";
+import { discordEvents } from './services/discord-service.js';
 
 /**
  * Some predefined delay values (in milliseconds).
@@ -36,4 +36,4 @@ export async function greeter(name: any) {
   return await delayedHello(name, Delays.Short);
 }
 
-discordEvents()
+discordEvents();

src/services/alchemy-service.ts

@@ -1,15 +1,16 @@
 import { Network, Alchemy, Utils } from 'alchemy-sdk';
 import { Client } from 'discord.js';
 import { shortenAddress } from '../utils/index.js';
+import { config } from '../utils/env.js';
 
 const settings = {
-  apiKey: process.env.ALCHEMY_API_KEY,
+  apiKey: config.alchemy.apiKey,
   network: Network.ETH_SEPOLIA,
 };
 
 const alchemy = new Alchemy(settings);
 
-const DISCORD_CHANNEL_ID = process.env.DISCORD_CHANNEL_ID;
+const DISCORD_CHANNEL_ID = config.discord.channelId;
 
 export async function getBalance(address: string) {
   return alchemy.core.getBalance(address, 'latest');

src/services/discord-service.ts

@@ -1,4 +1,3 @@
-import dotenv from 'dotenv';
 import { Utils } from 'alchemy-sdk';
 import { Client, Events, GatewayIntentBits } from 'discord.js';
 import {
@@ -7,8 +6,7 @@ import {
   trackAddress,
 } from './alchemy-service.js';
 import { shortenAddress } from '../utils/index.js';
-
-dotenv.config();
+import { config } from '../utils/env.js';
 
 const client = new Client({
   intents: [
@@ -19,8 +17,8 @@ const client = new Client({
   ],
 });
 
-const DISCORD_BOT_TOKEN = process.env.DISCORD_BOT_TOKEN;
-const DISCORD_CHANNEL_ID = process.env.DISCORD_CHANNEL_ID;
+const DISCORD_BOT_TOKEN = config.discord.botToken;
+const DISCORD_CHANNEL_ID = config.discord.channelId;
 
 let trackedAddress = '';
 
@@ -58,7 +56,7 @@ export async function discordEvents() {
       message.channel.send(`🔎 Now tracking address: ${trackedAddress}`);
       console.log(`Tracking address: ${trackedAddress}`);
 
-      trackAddress(address, client)
+      trackAddress(address, client);
     } else if (command === '!balance') {
       const address = args[0];
       if (!address) {
@@ -68,6 +66,7 @@ export async function discordEvents() {
         return;
       }
       try {
+        message.channel.send(':hourglass:');
         const balance = await getBalance(address);
         message.channel.send(
           `💰 Balance for address ${shortenAddress(

src/utils/env.ts

@@ -0,0 +1,40 @@
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+export interface DiscordConfig {
+  botToken: string;
+  channelId: string;
+}
+
+export interface AlchemyConfig {
+  apiKey: string;
+}
+
+export interface IConfig {
+  discord: DiscordConfig;
+  alchemy: AlchemyConfig;
+}
+
+const getEnv = (key: string, defaultValue?: string): string => {
+  const value = process.env[key];
+  if (!value) {
+    if (!defaultValue) {
+      throw new Error(
+        `No environment variable for ${key} - doesn't have a default fallback value`,
+      );
+    }
+    return defaultValue;
+  }
+  return value;
+};
+
+export const config: IConfig = {
+  discord: {
+    botToken: getEnv('DISCORD_BOT_TOKEN', ''),
+    channelId: getEnv('DISCORD_CHANNEL_ID', ''),
+  },
+  alchemy: {
+    apiKey: getEnv('ALCHEMY_API_KEY', ''),
+  },
+};

src/utils/index.ts

@@ -1,4 +1,4 @@
 export function shortenAddress(address: string) {
-  if (!address) return "";
-  return address.slice(0, 6) + "..." + address.slice(-4);
+  if (!address) return '';
+  return address.slice(0, 6) + '...' + address.slice(-4);
 }