gprunet
76 lines
1.4 KiB
JavaScript
76 lines
1.4 KiB
JavaScript
require('dotenv').config();
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const { Pool } = require('pg');
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const pool = new Pool
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({
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user: process.env.POSTGRES_USER,
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host: process.env.POSTGRES_HOST,
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database: process.env.POSTGRES_DB,
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password: process.env.POSTGRES_PASSWORD,
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port: 5432,
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});
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async function waitForDb(retries = 10, delay = 2000)
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{
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for (let i = 0; i < retries; i++)
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{
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try
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{
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await pool.query('SELECT 1');
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console.log('Database is ready!');
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return ;
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}
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catch (err)
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{
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await new Promise(r => setTimeout(r, delay));
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}
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}
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throw new Error('Could not connect to database after multiple attempts');
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}
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async function createTables()
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{
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try
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{
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await pool.query(`
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CREATE TABLE IF NOT EXISTS users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(50) UNIQUE NOT NULL,
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email VARCHAR(100),
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created_at TIMESTAMP DEFAULT NOW()
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);
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CREATE TABLE IF NOT EXISTS messages(
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id SERIAL PRIMARY KEY,
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sender_id INT REFERENCES users(id),
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received_id INT REFERENCES users(id),
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content TEXT,
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created_at TIMESTAMP DEFAULT NOW()
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);
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`);
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console.log('Tables created!');
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}
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catch (err)
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{
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console.error('Error creating tables:', err);
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}
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}
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const express = require('express');
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const app = express();
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async function startServer()
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{
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await waitForDb();
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await createTables();
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app.get('/', (req, res) => res.send('Backend running'));
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app.listen(3001, () =>
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{
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console.log('Server ready and listening');
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});
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}
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startServer(); |