feat: "Added environment variable checks and initialized config properties in Config class"

Author: m-mdy-m

.env.example

@@ -0,0 +1,26 @@
+# Telegram Bot Token (Set your Telegram bot token here)
+TELEGRAM_BOT_TOKEN=your_telegram_bot_token_here
+
+# Database Configuration (Local)
+# Set your local database credentials here
+DB_USER=your_db_user_here
+DB_PASSWORD=your_db_password_here
+DB_HOST=localhost
+DB_NAME=your_db_name_here
+DB_PORT=5432
+DB_URL=postgres://your_db_user_here:your_db_password_here@localhost:5432/your_db_name_here
+
+# Database Configuration (Remote/Production)
+# Set your production database URL here
+DATABASE_URL=postgresql://your_db_user_here:your_db_password_here@your_host_here:your_port_here/your_db_name_here
+
+# Application Configuration
+# Set the port where your application will run
+PORT=3000
+
+# Set your web hook URL here (for webhook integration with Telegram)
+WEB_HOOK=https://your-webhook-url-here
+
+# Environment
+# Set to 'production' in production environment, 'development' for local development
+NODE_ENV=development

src/config/index.ts

@@ -11,13 +11,21 @@ class Config {
   private constructor() {
     // Ensure that the token is available in the environment
     const token = process.env.TELEGRAM_BOT_TOKEN;
-    const web_hook = process.env.WEB_HOOK!;
+    const web_hook = process.env.WEB_HOOK;
+    const port = process.env.PORT;
+    const nodeEnv = process.env.NODE_ENV || 'development';
+    if (!token) {
+      throw new Error('Telegram bot token is missing. Please set TELEGRAM_BOT_TOKEN in the environment.');
+    }
+    if (!web_hook) {
+      throw new Error('Web hook URL is missing. Please set WEB_HOOK in the environment.');
+    }
+
     if (!token) {
       throw new Error('Telegram bot token is missing. Please set TELEGRAM_BOT_TOKEN in the environment.');
     }
-    const port = process.env.PORT!;
     // Set the environment, defaulting to development if not set
-    const environment: 'development' | 'production' = process.env.NODE_ENV === 'production' ? 'production' : 'development';
+    const environment: 'development' | 'production' = nodeEnv === 'production' ? 'production' : 'development';
 
     // Database configuration with environment variables
     const dbUser = process.env.DB_USER!;
@@ -26,6 +34,8 @@ class Config {
     const dbPassword = process.env.DB_PASSWORD!;
     const dbPort = parseInt(process.env.DB_PORT!, 10);
     const dbUrl = environment === 'production' ? process.env.DATABASE_URL! : process.env.DB_URL!;
+
+    // Initialize the config properties
     this.token = token;
     this.environment = environment;
     this.port = Number(port);