first commit

db.js

@@ -0,0 +1,37 @@
+const { Pool } = require('pg');
+require('dotenv').config();
+
+const pool = new Pool({
+    host: process.env.PGHOST,
+    user: process.env.PGUSER,
+    database: process.env.PGDATABASE,
+    password: process.env.PGPASSWORD,
+    port: process.env.PGPORT,
+});
+
+async function connectDB() {
+    try {
+        await pool.connect();
+        console.log('Database connected.')
+    } catch (error) {
+        console.error('Failed to connect to the database: ',error) 
+        process.exit(1)
+    }
+}
+
+function closeDB() {
+    try {
+        pool.end();
+        console.log('Database connection closed.')
+    } catch (error) {
+        console.error('Error closing the database: ', error )
+    }
+}
+
+
+
+module.exports = {
+    query: (text, params) => pool.query(text, params),
+    closeDB,
+    connectDB
+};