Add user profile panel with self-service password change and dark theme UserMenu

backend/routes/auth.js

@@ -258,6 +258,137 @@ function createAuthRouter(db, logAudit) {
         }
     });
 
+    /**
+     * GET /api/auth/profile
+     *
+     * Returns the full profile for the currently authenticated user.
+     * Queries the database for up-to-date account details including
+     * creation date and last login timestamp.
+     *
+     * @returns {object} 200 - { id, username, email, group, created_at, last_login }
+     * @returns {object} 401 - { error: 'Account is disabled' } (clears session cookie)
+     * @returns {object} 500 - { error: 'Failed to fetch profile' }
+     */
+    router.get('/profile', requireAuth(db), async (req, res) => {
+        try {
+            const user = await new Promise((resolve, reject) => {
+                db.get(
+                    'SELECT id, username, email, user_group, created_at, last_login, is_active FROM users WHERE id = ?',
+                    [req.user.id],
+                    (err, row) => {
+                        if (err) reject(err);
+                        else resolve(row);
+                    }
+                );
+            });
+
+            if (!user || !user.is_active) {
+                res.clearCookie('session_id');
+                return res.status(401).json({ error: 'Account is disabled' });
+            }
+
+            res.json({
+                id: user.id,
+                username: user.username,
+                email: user.email,
+                group: user.user_group,
+                created_at: user.created_at,
+                last_login: user.last_login
+            });
+        } catch (err) {
+            console.error('Profile fetch error:', err);
+            res.status(500).json({ error: 'Failed to fetch profile' });
+        }
+    });
+
+    // Rate limiter for password change — 5 attempts per 15-minute window, keyed by session cookie
+    const passwordChangeLimiter = rateLimit({
+        windowMs: 15 * 60 * 1000, // 15 minutes
+        max: 5,
+        standardHeaders: true,
+        legacyHeaders: false,
+        keyGenerator: (req) => req.cookies?.session_id || req.ip,
+        message: { error: 'Too many password change attempts. Please try again later.' }
+    });
+
+    /**
+     * POST /api/auth/change-password
+     *
+     * Allows the authenticated user to change their own password.
+     * Rate-limited to 5 attempts per 15-minute window per session.
+     *
+     * @body {string} currentPassword - The user's current password
+     * @body {string} newPassword - The desired new password (min 8 characters)
+     * @returns {object} 200 - { message: 'Password changed successfully' }
+     * @returns {object} 400 - { error: 'Current password and new password are required' } | { error: 'New password must be at least 8 characters' }
+     * @returns {object} 401 - { error: 'Account is disabled' } | { error: 'Current password is incorrect' }
+     * @returns {object} 429 - { error: 'Too many password change attempts. Please try again later.' }
+     * @returns {object} 500 - { error: 'Failed to change password' }
+     */
+    router.post('/change-password', requireAuth(db), passwordChangeLimiter, async (req, res) => {
+        const { currentPassword, newPassword } = req.body;
+
+        if (!currentPassword || !newPassword) {
+            return res.status(400).json({ error: 'Current password and new password are required' });
+        }
+
+        if (newPassword.length < 8) {
+            return res.status(400).json({ error: 'New password must be at least 8 characters' });
+        }
+
+        try {
+            // Fetch user's password hash and active status
+            const user = await new Promise((resolve, reject) => {
+                db.get(
+                    'SELECT password_hash, is_active FROM users WHERE id = ?',
+                    [req.user.id],
+                    (err, row) => {
+                        if (err) reject(err);
+                        else resolve(row);
+                    }
+                );
+            });
+
+            if (!user || !user.is_active) {
+                return res.status(401).json({ error: 'Account is disabled' });
+            }
+
+            // Verify current password
+            const validPassword = await bcrypt.compare(currentPassword, user.password_hash);
+            if (!validPassword) {
+                return res.status(401).json({ error: 'Current password is incorrect' });
+            }
+
+            // Hash new password and update
+            const newHash = await bcrypt.hash(newPassword, 10);
+            await new Promise((resolve, reject) => {
+                db.run(
+                    'UPDATE users SET password_hash = ? WHERE id = ?',
+                    [newHash, req.user.id],
+                    (err) => {
+                        if (err) reject(err);
+                        else resolve();
+                    }
+                );
+            });
+
+            logAudit(db, {
+                userId: req.user.id,
+                username: req.user.username,
+                action: 'password_change',
+                entityType: 'auth',
+                entityId: null,
+                details: null,
+                ipAddress: req.ip
+            });
+
+            res.json({ message: 'Password changed successfully' });
+        } catch (err) {
+            console.error('Password change error:', err);
+            res.status(500).json({ error: 'Failed to change password' });
+        }
+    });
+
     /**
      * POST /api/auth/cleanup-sessions
      *