register + login + mdp hash

srcs/backend/db.js

@@ -0,0 +1,81 @@
+require('dotenv').config();
+const { Pool } = require('pg');
+
+const pool = new Pool
+({
+	user: process.env.POSTGRES_USER,
+	host: process.env.POSTGRES_HOST,
+	database: process.env.POSTGRES_DB,
+	password: process.env.POSTGRES_PASSWORD,
+	port: 5432,
+});
+
+async function waitForDb(retries = 10, delay = 2000)
+{
+	for (let i = 0; i < retries; i++)
+	{
+		try
+		{
+			await pool.query('SELECT 1');
+			console.log('Database is ready!');
+			return ;
+		}
+		catch (err)
+		{
+			await new Promise(r =>  setTimeout(r, delay));
+		}
+	}
+	throw new Error('Could not connect to database after multiple attempts');
+}
+
+async function createTables()
+{
+	try
+	{
+		await pool.query(`
+			CREATE TABLE IF NOT EXISTS users (
+				id SERIAL PRIMARY KEY,
+				username VARCHAR(50) UNIQUE NOT NULL,
+				password_hash TEXT NOT NULL,
+				email VARCHAR(100),
+				created_at TIMESTAMP DEFAULT NOW()
+			);
+			
+			CREATE TABLE IF NOT EXISTS messages(
+				id SERIAL PRIMARY KEY,
+				sender_id INT REFERENCES users(id),
+				received_id INT REFERENCES users(id),
+				content TEXT,
+				created_at TIMESTAMP DEFAULT NOW()
+			);
+
+			CREATE TABLE IF NOT EXISTS friendship (
+				id_user1 INT NOT NULL,
+				id_user2 INT NOT NULL,
+				status VARCHAR(20) NOT NULL,
+				created_at TIMESTAMP DEFAULT NOW(),
+				CHECK (id_user1 < id_user2),
+				PRIMARY KEY (id_user1, id_user2),
+				FOREIGN KEY (id_user1) REFERENCES users(id) ON DELETE CASCADE,
+				FOREIGN KEY (id_user2) REFERENCES users(id) ON DELETE CASCADE
+			);
+		`);
+		console.log('Tables created!');
+	}
+	catch (err)
+	{
+		console.error('Error creating tables:', err);
+	}
+}
+
+async function query(text, params)
+{
+	return (pool.query(text, params));
+}
+
+module.exports =
+{
+	waitForDb,
+	createTables,
+	query
+};