Add audit logging for CRUD operations

- Extend audit.service.js with logging functions for projects, todos, companies, time tracking, and auth
- Create audit.controller.js for fetching recent audit logs with user info
- Create audit.routes.js with GET /api/audit-logs endpoint
- Add audit logging to project, todo, company, time-tracking, and auth controllers
- Log create/delete operations for projects, todos, companies
- Log timer start/stop for time tracking
- Log login/logout events

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/controllers/audit.controller.js

@@ -0,0 +1,43 @@
+import { db } from '../config/database.js';
+import { auditLogs, users } from '../db/schema.js';
+import { desc, eq } from 'drizzle-orm';
+
+export const getRecentAuditLogs = async (req, res, next) => {
+  try {
+    const { limit = 20, userId } = req.query;
+
+    let query = db
+      .select({
+        id: auditLogs.id,
+        userId: auditLogs.userId,
+        action: auditLogs.action,
+        resource: auditLogs.resource,
+        resourceId: auditLogs.resourceId,
+        oldValue: auditLogs.oldValue,
+        newValue: auditLogs.newValue,
+        success: auditLogs.success,
+        createdAt: auditLogs.createdAt,
+        // User info
+        userFirstName: users.firstName,
+        userLastName: users.lastName,
+        username: users.username,
+      })
+      .from(auditLogs)
+      .leftJoin(users, eq(auditLogs.userId, users.id))
+      .orderBy(desc(auditLogs.createdAt))
+      .limit(parseInt(limit));
+
+    if (userId) {
+      query = query.where(eq(auditLogs.userId, userId));
+    }
+
+    const logs = await query;
+
+    res.json({
+      success: true,
+      data: logs,
+    });
+  } catch (error) {
+    next(error);
+  }
+};

src/controllers/auth.controller.js

@@ -3,6 +3,8 @@ import {
   logLoginAttempt,
   logPasswordChange,
   logEmailLink,
+  logLogin,
+  logLogout,
 } from '../services/audit.service.js';
 
 /**
@@ -24,6 +26,7 @@ export const login = async (req, res, next) => {
 
     // Log successful login
     await logLoginAttempt(username, true, ipAddress, userAgent);
+    await logLogin(result.user.id, username, ipAddress, userAgent);
 
     // Nastav cookie s access tokenom (httpOnly, secure)
     res.cookie('accessToken', result.tokens.accessToken, {
@@ -143,6 +146,13 @@ export const skipEmail = async (req, res, next) => {
  */
 export const logout = async (req, res, next) => {
   try {
+    const userId = req.userId;
+    const ipAddress = req.ip || req.connection.remoteAddress;
+    const userAgent = req.headers['user-agent'];
+
+    // Log logout event
+    await logLogout(userId, ipAddress, userAgent);
+
     const result = await authService.logout();
 
     // Vymaž cookies

src/controllers/company.controller.js

@@ -2,6 +2,7 @@ import * as companyService from '../services/company.service.js';
 import * as noteService from '../services/note.service.js';
 import * as companyReminderService from '../services/company-reminder.service.js';
 import * as companyEmailService from '../services/company-email.service.js';
+import { logCompanyCreated, logCompanyDeleted } from '../services/audit.service.js';
 
 /**
  * Get all companies
@@ -114,6 +115,9 @@ export const createCompany = async (req, res, next) => {
 
     const company = await companyService.createCompany(userId, data);
 
+    // Log audit event
+    await logCompanyCreated(userId, company.id, company.name, req.ip, req.headers['user-agent']);
+
     res.status(201).json({
       success: true,
       data: company,
@@ -153,9 +157,17 @@ export const updateCompany = async (req, res, next) => {
 export const deleteCompany = async (req, res, next) => {
   try {
     const { companyId } = req.params;
+    const userId = req.userId;
+
+    // Get company info before deleting
+    const company = await companyService.getCompanyById(companyId);
+    const companyName = company?.name;
 
     const result = await companyService.deleteCompany(companyId);
 
+    // Log audit event
+    await logCompanyDeleted(userId, companyId, companyName, req.ip, req.headers['user-agent']);
+
     res.status(200).json({
       success: true,
       message: result.message,

src/controllers/project.controller.js

@@ -1,5 +1,6 @@
 import * as projectService from '../services/project.service.js';
 import * as noteService from '../services/note.service.js';
+import { logProjectCreated, logProjectDeleted } from '../services/audit.service.js';
 
 /**
  * Get all projects
@@ -71,6 +72,9 @@ export const createProject = async (req, res, next) => {
 
     const project = await projectService.createProject(userId, data);
 
+    // Log audit event
+    await logProjectCreated(userId, project.id, project.name, req.ip, req.headers['user-agent']);
+
     res.status(201).json({
       success: true,
       data: project,
@@ -110,9 +114,17 @@ export const updateProject = async (req, res, next) => {
 export const deleteProject = async (req, res, next) => {
   try {
     const { projectId } = req.params;
+    const userId = req.userId;
+
+    // Get project info before deleting
+    const project = await projectService.getProjectById(projectId);
+    const projectName = project?.name;
 
     const result = await projectService.deleteProject(projectId);
 
+    // Log audit event
+    await logProjectDeleted(userId, projectId, projectName, req.ip, req.headers['user-agent']);
+
     res.status(200).json({
       success: true,
       message: result.message,

src/controllers/time-tracking.controller.js

@@ -1,4 +1,5 @@
 import * as timeTrackingService from '../services/time-tracking.service.js';
+import { logTimerStarted, logTimerStopped } from '../services/audit.service.js';
 
 /**
  * Start a new time entry
@@ -16,6 +17,9 @@ export const startTimeEntry = async (req, res, next) => {
       description,
     });
 
+    // Log audit event
+    await logTimerStarted(userId, entry.id, description || 'Timer', req.ip, req.headers['user-agent']);
+
     res.status(201).json({
       success: true,
       data: entry,
@@ -43,6 +47,9 @@ export const stopTimeEntry = async (req, res, next) => {
       description,
     });
 
+    // Log audit event
+    await logTimerStopped(userId, entry.id, description || 'Timer', entry.duration, req.ip, req.headers['user-agent']);
+
     res.status(200).json({
       success: true,
       data: entry,

src/controllers/todo.controller.js

@@ -1,4 +1,5 @@
 import * as todoService from '../services/todo.service.js';
+import { logTodoCreated, logTodoDeleted, logTodoCompleted } from '../services/audit.service.js';
 
 /**
  * Get all todos
@@ -112,6 +113,9 @@ export const createTodo = async (req, res, next) => {
     console.log('Backend received todo data:', data);
     const todo = await todoService.createTodo(userId, data);
 
+    // Log audit event
+    await logTodoCreated(userId, todo.id, todo.title, req.ip, req.headers['user-agent']);
+
     res.status(201).json({
       success: true,
       data: todo,
@@ -152,9 +156,17 @@ export const updateTodo = async (req, res, next) => {
 export const deleteTodo = async (req, res, next) => {
   try {
     const { todoId } = req.params;
+    const userId = req.userId;
+
+    // Get todo info before deleting
+    const todo = await todoService.getTodoById(todoId);
+    const todoTitle = todo?.title;
 
     const result = await todoService.deleteTodo(todoId);
 
+    // Log audit event
+    await logTodoDeleted(userId, todoId, todoTitle, req.ip, req.headers['user-agent']);
+
     res.status(200).json({
       success: true,
       message: result.message,
@@ -171,15 +183,22 @@ export const deleteTodo = async (req, res, next) => {
 export const toggleTodo = async (req, res, next) => {
   try {
     const { todoId } = req.params;
+    const userId = req.userId;
 
     // Get current todo
     const todo = await todoService.getTodoById(todoId);
+    const wasCompleted = todo.status === 'completed';
 
     // Toggle completed status
     const updated = await todoService.updateTodo(todoId, {
-      status: todo.status === 'completed' ? 'pending' : 'completed',
+      status: wasCompleted ? 'pending' : 'completed',
     });
 
+    // Log audit event if todo was completed
+    if (!wasCompleted) {
+      await logTodoCompleted(userId, todoId, todo.title, req.ip, req.headers['user-agent']);
+    }
+
     res.status(200).json({
       success: true,
       data: updated,