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import express from 'express';
import * as userCtrl from '../controllers/userController.js';
const router = express.Router();
const USERNAME_MIN = 3;
const USERNAME_MAX = 30;
const DISPLAY_NAME_MAX = 100;
const DEFAULT_LIMIT = 50;
const MAX_LIMIT = 200;
function isValidUsername(username) {
if (typeof username !== 'string') {
return false;
}
if (username.length < USERNAME_MIN || username.length > USERNAME_MAX) {
return false;
}
const allowed = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_';
for (let i = 0; i < username.length; i++) {
if (allowed.indexOf(username[i]) === -1) {
return false;
}
}
return true;
}
function isValidDisplayName(displayName) {
if (displayName === undefined || displayName === null) {
return true;
}
if (typeof displayName !== 'string') {
return false;
}
return displayName.length <= DISPLAY_NAME_MAX;
}
// Search users (must be before /:id)
router.get('/search', async function(req, res) {
const q = req.query.q;
if (typeof q !== 'string' || q.length < 1) {
return res.status(400).json({ error: 'invalid_query' });
}
const results = await userCtrl.searchUsers({ q: q, fields: ['username', 'displayName'] });
res.json(results);
});
// List users with pagination
router.get('/', async function(req, res) {
let limit = parseInt(req.query.limit, 10);
let offset = parseInt(req.query.offset, 10);
if (isNaN(limit) || limit < 1) {
limit = DEFAULT_LIMIT;
}
if (limit > MAX_LIMIT) {
limit = MAX_LIMIT;
}
if (isNaN(offset) || offset < 0) {
offset = 0;
}
const users = await userCtrl.listUsers({ limit: limit, offset: offset });
res.json(users);
});
// Get user by id
router.get('/:id', async function(req, res) {
const user = await userCtrl.getUserById(req.params.id);
if (!user) {
return res.status(404).json({ error: 'not_found' });
}
res.json(user);
});
// Create user
router.post('/', async function(req, res) {
const username = req.body.username;
const displayName = req.body.displayName;
if (!isValidUsername(username)) {
return res.status(400).json({ error: 'invalid_username' });
}
if (!isValidDisplayName(displayName)) {
return res.status(400).json({ error: 'invalid_display_name' });
}
const user = await userCtrl.createUser({ username: username, displayName: displayName });
res.status(201).json(user);
});
// Update user
router.put('/:id', async function(req, res) {
const username = req.body.username;
const displayName = req.body.displayName;
if (username !== undefined && !isValidUsername(username)) {
return res.status(400).json({ error: 'invalid_username' });
}
if (!isValidDisplayName(displayName)) {
return res.status(400).json({ error: 'invalid_display_name' });
}
const updates = {};
if (username !== undefined) {
updates.username = username;
}
if (displayName !== undefined) {
updates.displayName = displayName;
}
const user = await userCtrl.updateUser(req.params.id, updates);
if (!user) {
return res.status(404).json({ error: 'not_found' });
}
res.json(user);
});
// Delete user
router.delete('/:id', async function(req, res) {
const ok = await userCtrl.deleteUser(req.params.id);
if (!ok) {
return res.status(404).json({ error: 'not_found' });
}
res.status(204).send();
});
// Login - get token by username
router.post('/login', async function(req, res) {
const username = req.body.username;
if (!isValidUsername(username)) {
return res.status(400).json({ error: 'invalid_username' });
}
const user = await userCtrl.getUserByUsername(username);
if (!user) {
return res.status(404).json({ error: 'user_not_found' });
}
res.json({ token: user.token, userId: user._id });
});
export default router;
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