add DB config

backend/src/config/db.js

@@ -0,0 +1,34 @@
+const { Sequelize } = require('sequelize');
+const dotenv = require('dotenv');
+
+dotenv.config();
+
+const sequelize = new Sequelize(
+  process.env.DB_NAME,
+  process.env.DB_USER,
+  process.env.DB_PASSWORD,
+  {
+    host: process.env.DB_HOST,
+    port: process.env.DB_PORT,
+    dialect: 'postgres',
+    logging: false,
+    pool: {
+      max: 5,
+      min: 0,
+      acquire: 30000,
+      idle: 10000
+    }
+  }
+);
+
+const testConnection = async () => {
+  try {
+    await sequelize.authenticate();
+    console.log('Database connection established successfully.');
+  } catch (error) {
+    console.error('Unable to connect to the database:', error);
+    process.exit(1);
+  }
+};
+
+module.exports = { sequelize, testConnection };