From 8d11439065b177edc52426780ee4e563451f3e63 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michal=20Ut=C4=BE=C3=A1k?= Date: Sun, 22 Mar 2026 11:40:10 +0000 Subject: [PATCH] backend --- Dockerfile | 12 +++ app.js | 226 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 238 insertions(+) create mode 100644 Dockerfile create mode 100644 app.js diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..d76d490 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,12 @@ +FROM node:20-alpine + +WORKDIR /app + +COPY package*.json ./ +RUN npm install + +COPY backend ./backend + +EXPOSE 3000 + +CMD ["node", "backend/app.js"] \ No newline at end of file diff --git a/app.js b/app.js new file mode 100644 index 0000000..b04e1e3 --- /dev/null +++ b/app.js @@ -0,0 +1,226 @@ +const express = require('express'); +const mysql = require('mysql2/promise'); +const bcrypt = require('bcryptjs'); +const session = require('express-session'); +const path = require('path'); +require('dotenv').config({ path: path.join(__dirname, '../.env') }); + +const app = express(); + +const FRONTEND_DIR = path.join(__dirname, '../frontend'); + +const pool = mysql.createPool({ + host: process.env.DB_HOST, + port: Number(process.env.DB_PORT), + user: process.env.DB_USER, + password: process.env.DB_PASSWORD, + database: process.env.DB_NAME, + waitForConnections: true, + connectionLimit: 10, + queueLimit: 0 +}); + +app.use(express.urlencoded({ extended: true })); +app.use(express.json()); + +app.use(session({ + secret: process.env.SESSION_SECRET, + resave: false, + saveUninitialized: false +})); + +app.get('/', (req, res) => { + if (req.session.user) { + return res.redirect('/index.html'); + } + res.sendFile(path.join(FRONTEND_DIR, 'login.html')); +}); + +app.get('/register', (req, res) => { + res.sendFile(path.join(FRONTEND_DIR, 'register.html')); +}); + +app.get('/index.html', (req, res) => { + if (!req.session.user) { + return res.redirect('/'); + } + res.sendFile(path.join(FRONTEND_DIR, 'index.html')); +}); + +app.post('/register', async (req, res) => { + const { username, password, password2 } = req.body; + + if (!username || !password || !password2) { + return res.redirect('/register.html?error=' + encodeURIComponent('Vyplň všetky polia')); + } + + if (password !== password2) { + return res.redirect('/register.html?error=' + encodeURIComponent('Heslá sa nezhodujú')); + } + + try { + const hashedPassword = await bcrypt.hash(password, 10); + + await pool.execute( + 'INSERT INTO users (username, password) VALUES (?, ?)', + [username, hashedPassword] + ); + + return res.redirect('/'); + } catch (err) { + console.error(err); + return res.redirect('/register.html?error=' + encodeURIComponent('Používateľ už existuje')); + } +}); + +app.post('/login', async (req, res) => { + const { username, password } = req.body; + + if (!username || !password) { + return res.redirect('/?error=Vyplň%20všetky%20polia'); + } + + try { + const [rows] = await pool.execute( + 'SELECT * FROM users WHERE username = ?', + [username] + ); + + const row = rows[0]; + + if (!row) { + return res.redirect('/?error=Zlé%20meno%20alebo%20heslo'); + } + + const result = await bcrypt.compare(password, row.password); + + if (!result) { + return res.redirect('/?error=Zlé%20meno%20alebo%20heslo'); + } + + req.session.user = { + id: row.id, + username: row.username + }; + + return res.redirect('/index.html'); + } catch (err) { + console.error(err); + return res.redirect('/?error=Chyba%20databázy'); + } +}); + +app.post('/logout', (req, res) => { + req.session.destroy(() => { + res.redirect('/'); + }); +}); + +app.get('/api/me', (req, res) => { + if (!req.session.user) { + return res.status(401).json({ error: 'Neprihlásený používateľ' }); + } + + res.json(req.session.user); +}); + +app.get('/api/tasks', async (req, res) => { + if (!req.session.user) { + return res.status(401).json({ error: 'Neprihlásený používateľ' }); + } + + try { + const [rows] = await pool.execute( + 'SELECT * FROM tasks WHERE user_id = ? ORDER BY deadline ASC', + [req.session.user.id] + ); + + res.json(rows); + } catch (err) { + console.error(err); + return res.status(500).json({ error: 'Chyba pri načítaní úloh' }); + } +}); + +app.post('/api/tasks', async (req, res) => { + if (!req.session.user) { + return res.status(401).json({ error: 'Neprihlásený používateľ' }); + } + + const { title, description, deadline } = req.body; + + if (!title || !description || !deadline) { + return res.status(400).json({ error: 'Vyplň všetky polia' }); + } + + try { + const [result] = await pool.execute( + 'INSERT INTO tasks (user_id, title, description, deadline) VALUES (?, ?, ?, ?)', + [req.session.user.id, title, description, deadline] + ); + + const [rows] = await pool.execute( + 'SELECT * FROM tasks WHERE id = ?', + [result.insertId] + ); + + res.json(rows[0]); + } catch (err) { + console.error(err); + return res.status(500).json({ error: 'Chyba pri ukladaní úlohy' }); + } +}); + +app.delete('/api/tasks/:id', async (req, res) => { + if (!req.session.user) { + return res.status(401).json({ error: 'Neprihlásený používateľ' }); + } + + try { + await pool.execute( + 'DELETE FROM tasks WHERE id = ? AND user_id = ?', + [req.params.id, req.session.user.id] + ); + + res.json({ success: true }); + } catch (err) { + console.error(err); + return res.status(500).json({ error: 'Chyba pri mazaní úlohy' }); + } +}); + +app.patch('/api/tasks/:id/toggle', async (req, res) => { + if (!req.session.user) { + return res.status(401).json({ error: 'Neprihlásený používateľ' }); + } + + const { status } = req.body; + + try { + await pool.execute( + 'UPDATE tasks SET status = ? WHERE id = ? AND user_id = ?', + [status ? 1 : 0, req.params.id, req.session.user.id] + ); + + res.json({ success: true }); + } catch (err) { + console.error(err); + return res.status(500).json({ error: 'Chyba pri zmene stavu úlohy' }); + } +}); + +app.use(express.static(FRONTEND_DIR)); + +const PORT = process.env.PORT || 3000; + +app.listen(PORT, async () => { + try { + const connection = await pool.getConnection(); + console.log('Pripojenie na MySQL úspešné.'); + connection.release(); + } catch (err) { + console.error('Nepodarilo sa pripojiť na MySQL:', err.message); + } + + console.log(`Server beží na http://localhost:${PORT}`); +}); \ No newline at end of file