Add documentation

.cursor/rules/docs.mdc

@@ -0,0 +1,11 @@
+---
+description: Documentation rules
+alwaysApply: false
+---
+
+When documenting this project, follow these rules:
+
+1. For TS, use JSDoc.
+2. When something is self-explanatory or is a constant for a HTML element, don't document it.
+3. Do NOT change the structure of the code, only add documentation.
+4. When filling in the author field, say that you are Cursor.

frontend/index.html

@@ -120,7 +120,7 @@
                     <header class="chat-header-left">
                         <div id="productname">Loading...</div> 
                         <div class="profile">
-                            <a href="#" id="profbut">
+                            <a href="#" id="profile-open">
                                 <img src="./src/images/default-avatar.png" alt="" id="preview1" />
                             </a>
                         </div>
@@ -139,10 +139,10 @@
 
                             <mdui-tab-panel slot="panel" value="chats">
                                 <mdui-list>
-                                    <mdui-list-item headline="Общий чат" description="Вы: Последнее сообщение" id="chat1but">
+                                    <mdui-list-item headline="Общий чат" description="Вы: Последнее сообщение" id="chat-list-chat-1">
                                         <img src="./src/images/default-avatar.png" alt="" slot="icon" />
                                     </mdui-list-item>
-                                    <mdui-list-item headline="Общий чат 2" description="Вы: Последнее сообщение" id="chat1but2">
+                                    <mdui-list-item headline="Общий чат 2" description="Вы: Последнее сообщение" id="chat-list-chat-2">
                                         <img src="./src/images/default-avatar.png" alt="" slot="icon" />
                                     </mdui-list-item>
                                 </mdui-list>
@@ -159,17 +159,18 @@
                     </mdui-bottom-app-bar>
                 </div>
                 <div class="chat-container">          
-                    <div class="chat-main" id="conteinerchat">
+                    <div class="chat-main" id="chat-inner">
                         <div class="chat-header">
                             <img src="src/images/default-avatar.png" alt="Avatar" class="chat-header-avatar">
                             <div class="chat-header-info">
                                 <div class="info-chat">
-                                    <h4 id="namechat">Общий чат</h4>
+                                    <h4 id="chat-name">Общий чат</h4>
                                     <p>
-                                        <span class="online-status"></span> Онлайн
+                                        <span class="online-status"></span>
+                                        Онлайн
                                     </p>
                                 </div>
-                                <a href="#" id="chat-recrol">Свернуть чат</a>
+                                <a href="#" id="hide-chat">Свернуть чат</a>
                             </div>
                         </div>
                         

frontend/src/auth.ts

@@ -1,14 +1,36 @@
+/**
+ * @fileoverview Authentication system implementation
+ * @description Handles user authentication, registration, and session management
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import { loadMessages } from "./chat";
 import { initializeProfile } from "./profile";
 import type { Headers, ErrorResponse, User, LoginResponse, LoginRequest, RegisterRequest } from "./types";
 import { API_BASE_URL } from "./config";
 
-// Authentication and navigation handling
+/**
+ * Current authenticated user information
+ * @type {User | null}
+ */
 export let currentUser: User | null = null;
+
+/**
+ * JWT authentication token
+ * @type {string | null}
+ */
 export let authToken: string | null = null;
 
-
+/**
-// Helper function to get auth headers
+ * Generates authentication headers for API requests
+ * @param {boolean} json - Whether to include JSON content type header
+ * @returns {Headers} Headers object with authentication and content type
+ * @function getAuthHeaders
+ * @example
+ * const headers = getAuthHeaders();
+ * fetch('/api/endpoint', { headers });
+ */
 export function getAuthHeaders(json: boolean = true): Headers {
     const headers: Headers = {};
 
@@ -22,38 +44,65 @@ export function getAuthHeaders(json: boolean = true): Headers {
     return headers;
 }
 
-// Show login form
+/**
-export function showLogin() {
+ * Shows the login form and hides other interfaces
+ * @function showLogin
+ * @example
+ * showLogin();
+ */
+export function showLogin(): void {
     document.getElementById('login-form')!.style.display = 'flex';
     document.getElementById('register-form')!.style.display = 'none';
     document.getElementById('chat-interface')!.style.display = 'none';
     clearAlerts();
 }
 
-// Show register form
+/**
-export function showRegister() {
+ * Shows the registration form and hides other interfaces
+ * @function showRegister
+ * @example
+ * showRegister();
+ */
+export function showRegister(): void {
     document.getElementById('login-form')!.style.display = 'none';
     document.getElementById('register-form')!.style.display = 'flex';
     document.getElementById('chat-interface')!.style.display = 'none';
     clearAlerts();
 }
 
-// Show chat interface
+/**
-export function showChat() {
+ * Shows the chat interface and hides authentication forms
+ * @function showChat
+ * @example
+ * showChat();
+ */
+export function showChat(): void {
     document.getElementById('login-form')!.style.display = 'none';
     document.getElementById('register-form')!.style.display = 'none';
     document.getElementById('chat-interface')!.style.display = 'block';
     loadMessages();
 }
 
-// Clear all alerts
+/**
-export function clearAlerts() {
+ * Clears all alert messages from authentication forms
+ * @function clearAlerts
+ * @private
+ */
+export function clearAlerts(): void {
     document.getElementById('login-alerts')!.innerHTML = '';
     document.getElementById('register-alerts')!.innerHTML = '';
 }
 
-// Show alert message
+/**
-export function showAlert(containerId: string, message: string, type: "success" | "danger" = 'danger') {
+ * Shows an alert message in the specified container
+ * @param {string} containerId - ID of the container to show the alert in
+ * @param {string} message - Alert message to display
+ * @param {'success' | 'danger'} type - Type of alert (success or danger)
+ * @function showAlert
+ * @example
+ * showAlert('login-alerts', 'Login successful!', 'success');
+ */
+export function showAlert(containerId: string, message: string, type: "success" | "danger" = 'danger'): void {
     const container = document.getElementById(containerId)!;
     const alertDiv = document.createElement('div');
     alertDiv.className = `alert alert-${type}`;
@@ -61,8 +110,14 @@ export function showAlert(containerId: string, message: string, type: "success"
     container.appendChild(alertDiv);
 }
 
-// Handle login form submission
+/**
-document.getElementById('login-form-element')!.addEventListener('submit', async (e) => {
+ * Handles login form submission
+ * @async
+ * @function handleLogin
+ * @param {Event} e - Form submission event
+ * @private
+ */
+async function handleLogin(e: Event): Promise<void> {
     e.preventDefault();
 
     const usernameElement = document.getElementById('login-username') as HTMLInputElement;
@@ -105,10 +160,16 @@ document.getElementById('login-form-element')!.addEventListener('submit', async
     } catch (error) {
         showAlert('login-alerts', 'Ошибка соединения с сервером', 'danger');
     }
-});
+}
 
-// Handle register form submission
+/**
-document.getElementById('register-form-element')!.addEventListener('submit', async (e) => {
+ * Handles registration form submission
+ * @async
+ * @function handleRegister
+ * @param {Event} e - Form submission event
+ * @private
+ */
+async function handleRegister(e: Event): Promise<void> {
     e.preventDefault();
 
     const usernameElement = document.getElementById('register-username') as HTMLInputElement;
@@ -167,10 +228,16 @@ document.getElementById('register-form-element')!.addEventListener('submit', asy
     } catch (error) {
         showAlert('register-alerts', 'Ошибка соединения с сервером', 'danger');
     }
-});
+}
 
-// Handle logout
+/**
-export async function logout() {
+ * Logs out the current user and clears session data
+ * @async
+ * @function logout
+ * @example
+ * await logout();
+ */
+export async function logout(): Promise<void> {
     try {
         await fetch(`${API_BASE_URL}/logout`, {
             method: 'GET',
@@ -186,15 +253,50 @@ export async function logout() {
     clearAlerts();
 }
 
-// Load chat interface
+/**
-export function loadChat() {
+ * Loads the chat interface and initializes messaging
+ * @function loadChat
+ * @example
+ * loadChat();
+ */
+export function loadChat(): void {
     showChat();
     loadMessages();
 }
 
-// Check authentication status on page load
+/**
-export async function checkAuthStatus() {
+ * Checks authentication status on page load
+ * @async
+ * @function checkAuthStatus
+ * @example
+ * await checkAuthStatus();
+ */
+export async function checkAuthStatus(): Promise<void> {
     // For JWT, we don't have a persistent token on page load
     // So we'll just show the login form
     showLogin();
 }
+
+/**
+ * Sets up authentication form event listeners
+ * @function setupAuthForms
+ * @private
+ */
+function setupAuthForms(): void {
+    document.getElementById('login-form-element')!.addEventListener('submit', handleLogin);
+    document.getElementById('register-form-element')!.addEventListener('submit', handleRegister);
+}
+
+/**
+ * Initializes links
+ * @function setupLinks
+ * @private
+ */
+function setupLinks(): void {
+    document.getElementById("login-link")!.addEventListener("click", showLogin);
+    document.getElementById("register-link")!.addEventListener("click", showRegister);
+}
+
+// Initialize authentication forms
+setupAuthForms();
+setupLinks();

frontend/src/chat.ts

@@ -1,11 +1,25 @@
+/**
+ * @fileoverview Chat functionality and message management
+ * @description Handles message display, loading, sending, and real-time updates
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import { getAuthHeaders, currentUser, authToken } from "./auth";
 import { API_BASE_URL } from "./config";
 import { websocket } from "./websocket";
 import type { Message, Messages, WebSocketMessage } from "./types";
-import { formatTime } from "./utils";
+import { formatTime } from "./utils/utils";
 
-
+/**
-export function addMessage(message: Message, isAuthor: boolean) {
+ * Adds a new message to the chat interface
+ * @param {Message} message - Message object to display
+ * @param {boolean} isAuthor - Whether the current user is the message author
+ * @function addMessage
+ * @example
+ * addMessage(messageData, messageData.username === currentUser.username);
+ */
+export function addMessage(message: Message, isAuthor: boolean): void {
     const messagesContainer = document.querySelector('.chat-messages') as HTMLElement;
     const messageDiv = document.createElement('div');
     messageDiv.classList.add("message");
@@ -64,7 +78,13 @@ export function addMessage(message: Message, isAuthor: boolean) {
     messagesContainer.scrollTop = messagesContainer.scrollHeight;
 }
 
-export function loadMessages() {
+/**
+ * Loads chat messages from the server
+ * @function loadMessages
+ * @example
+ * loadMessages();
+ */
+export function loadMessages(): void {
     fetch(`${API_BASE_URL}/get_messages`, {
         headers: getAuthHeaders()
     })
@@ -89,7 +109,13 @@ export function loadMessages() {
         });
 }
 
-export function sendMessage() {
+/**
+ * Sends a message via WebSocket
+ * @function sendMessage
+ * @example
+ * sendMessage();
+ */
+export function sendMessage(): void {
     const input = document.querySelector('.message-input') as HTMLInputElement;
     const message = input.value.trim();
 

frontend/src/config.ts

@@ -1,3 +1,27 @@
+/**
+ * @fileoverview Application configuration constants
+ * @description Contains all configuration values used throughout the application
+ * @author Cursor
+ * @version 1.0.0
+ */
+
+/**
+ * Base API endpoint for all backend requests
+ * @type {string}
+ * @constant
+ */
 export const API_BASE_URL: string = '/api';
+
+/**
+ * Full API URL including hostname and port for WebSocket connections
+ * @type {string}
+ * @constant
+ */
 export const API_FULL_BASE_URL: string = `${location.hostname}:8301/api`;
+
+/**
+ * Application name displayed in UI and document title
+ * @type {string}
+ * @constant
+ */
 export const PRODUCT_NAME: string = "FromChat";

frontend/src/init.ts

@@ -1,7 +1,13 @@
+/**
+ * @fileoverview Application initialization logic
+ * @description Handles initial application setup and state
+ * @author FromChat Team
+ * @version 1.0.0
+ */
+
 import { showLogin } from "./auth";
 import { PRODUCT_NAME } from "./config";
 
 showLogin();
-
 document.getElementById("productname")!.textContent = PRODUCT_NAME;
 document.title = PRODUCT_NAME;

frontend/src/leftpanel.ts

@@ -1,39 +1,70 @@
+/**
+ * @fileoverview Left panel UI controls and interactions
+ * @description Handles chat collapse/expand, chat switching, and profile dialog
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import type { Dialog } from "mdui/components/dialog";
 import { loadProfilePicture } from "./profile/upload";
 
 // сварачивание и разворачивание чата
-const but = document.getElementById('chat-recrol')!;
+const chatCollapseBtn = document.getElementById('hide-chat')!;
-const but_list1 = document.getElementById('chat1but')!;
+const chat1 = document.getElementById('chat-list-chat-1')!;
-const but_list2 = document.getElementById('chat1but2')!;
+const chat2 = document.getElementById('chat-list-chat-2')!;
-const cont1 = document.getElementById('conteinerchat')!;
+const chatInner = document.getElementById('chat-inner')!;
-const namechat = document.getElementById('namechat')!;
+const chatName = document.getElementById('chat-name')!;
-
+const profileButton = document.getElementById('profile-open')!;
-but.addEventListener('click', () => {
-    but.style.display = 'none';
-    cont1.style.display = 'none';
-});
-but_list1.addEventListener('click', () => {
-    but.style.display = 'flex';
-    cont1.style.display = 'flex';
-    namechat.textContent = 'общий чат';
-});
-but_list2.addEventListener('click', () => {
-    but.style.display = 'flex';
-    cont1.style.display = 'flex';
-    namechat.textContent = 'общий чат 2';
-});
-
-// открытие профиля
-const butprofile = document.getElementById('profbut')!;
 const dialog = document.getElementById("profile-dialog") as Dialog;
 const dialogClose = document.getElementById("profile-dialog-close")!;
 
-butprofile.addEventListener('click', () => {
+/**
-    dialog.open = true;
+ * Sets up chat collapse functionality
-    // Load profile picture when dialog opens
+ * @function setupChatCollapse
-    loadProfilePicture();
+ * @private
-});
+ */
+function setupChatCollapse(): void {
+    chatCollapseBtn.addEventListener('click', () => {
+        chatCollapseBtn.style.display = 'none';
+        chatInner.style.display = 'none';
+    });
+}
 
-dialogClose.addEventListener("click", () => {
+/**
+ * Sets up chat switching functionality
+ * @function setupChatSwitching
+ * @private
+ */
+function setupChatSwitching(): void {
+    chat1.addEventListener('click', () => {
+        chatCollapseBtn.style.display = 'flex';
+        chatInner.style.display = 'flex';
+        chatName.textContent = 'общий чат';
+    });
+    
+    chat2.addEventListener('click', () => {
+        chatCollapseBtn.style.display = 'flex';
+        chatInner.style.display = 'flex';
+        chatName.textContent = 'общий чат 2';
+    });
+}
+
+/**
+ * Sets up profile dialog functionality
+ * @function setupProfileDialog
+ * @private
+ */
+function setupProfileDialog(): void {
+    profileButton.addEventListener('click', () => {
+        dialog.open = true;
+        loadProfilePicture();
+    });
+
+    dialogClose.addEventListener("click", () => {
         dialog.open = false;
-});
+    });
+}
+
+setupChatCollapse();
+setupChatSwitching();
+setupProfileDialog();

frontend/src/links.ts

@@ -1,11 +0,0 @@
-import { /* loadChat, */ /* logout, */ showLogin, showRegister } from "./auth";
-
-const login = document.getElementById("login-link")!;
-const register = document.getElementById("register-link")!;
-// const chat = document.getElementById("chat-link")!;
-// const logoutLink = document.getElementById("logout-link")!;
-
-login.addEventListener("click", showLogin);
-register.addEventListener("click", showRegister);
-// chat.addEventListener("click", loadChat);
-// logoutLink.addEventListener("click", logout);

frontend/src/main.ts

@@ -1,8 +1,14 @@
+/**
+ * @fileoverview Application entry point for FromChat frontend
+ * @description Main module that initializes all required components and styles
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import './css/style.scss';
 import "mdui/mdui.css";
 
-import "./links";
+import "./utils/material";
-import "./material";
 import "./chat";
 import "./settings";
 import "./leftpanel";

frontend/src/profile.ts

@@ -1,3 +1,10 @@
+/**
+ * @fileoverview Profile module entry point and initialization
+ * @description Coordinates profile system initialization and form handling
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import type { Dialog } from "mdui/components/dialog";
 import { loadProfileData } from './profile/editor';
 import { loadProfilePicture, initializeProfileUpload } from "./profile/upload";
@@ -15,7 +22,13 @@ form.addEventListener("submit", async (e) => {
     dialog.open = false;
 });
 
-// Initialize profile functionality after login
+/**
+ * Initializes profile functionality after user login
+ * @function initializeProfile
+ * @example
+ * // Called after successful authentication
+ * initializeProfile();
+ */
 export function initializeProfile(): void {
     // Initialize profile modules
     initializeProfileUpload();

frontend/src/profile/README.md

@@ -1,118 +0,0 @@
-# Profile Module Structure
-
-This directory contains the modularized profile functionality for the FromChat application.
-
-## Structure
-
-```
-profile/
-├── types.ts              # Type definitions
-├── notification.ts       # Notification system
-├── image-cropper.ts      # Image cropping functionality
-├── profile-service.ts    # API service layer
-├── profile-upload.ts     # Upload management
-├── profile-editor.ts     # Profile editing functionality
-└── README.md            # This file
-```
-
-## Modules
-
-### `types.ts`
-Contains all TypeScript interfaces and types used across the profile module:
-- `ProfileData` - User profile data structure
-- `UploadResponse` - API response for uploads
-- `NotificationType` - Notification types
-- `CropPosition` - Image cropping position
-- `DragStart` - Drag operation start position
-
-### `notification.ts`
-Top-level notification functions for displaying success/error messages:
-- `showSuccess(message: string)` - Show success notification
-- `showError(message: string)` - Show error notification
-
-### `image-cropper.ts`
-Canvas-based image cropper for profile pictures:
-- `ImageCropper` - Main cropper class with touch/mouse support
-- Handles circular cropping with drag functionality
-
-### `profile-service.ts`
-API service layer for profile operations:
-- `loadProfile()` - Load user profile data
-- `uploadProfilePicture(file: Blob)` - Upload profile picture
-- `updateProfile(data: Partial<ProfileData>)` - Update profile data
-
-### `profile-upload.ts`
-Manages profile picture upload workflow:
-- `loadProfilePicture()` - Load and display profile picture
-- Global variables and event listeners for upload UI
-- Handles file selection, cropping, and upload
-
-### `profile-editor.ts`
-Manages profile text editing (nickname, description):
-- `loadProfileData()` - Load profile text data
-- `setNicknameValue(value: string)` - Set nickname value
-- `setDescriptionValue(value: string)` - Set description value
-- `getNicknameValue()` - Get current nickname
-- `getDescriptionValue()` - Get current description
-- Global event listeners for edit buttons
-- Supports Enter to save, Escape to cancel
-
-## Usage
-
-### Direct Imports
-```typescript
-// Import specific functions from each module
-import { loadProfile, uploadProfilePicture, updateProfile } from './profile/profile-service';
-import { loadProfilePicture } from './profile/profile-upload';
-import { loadProfileData, setNicknameValue } from './profile/profile-editor';
-import { showSuccess, showError } from './profile/notification';
-import { ImageCropper } from './profile/image-cropper';
-```
-
-### Loading Profile Data
-```typescript
-// Load profile picture
-await loadProfilePicture();
-
-// Load profile text data
-await loadProfileData();
-```
-
-### Uploading Profile Picture
-The upload process is handled automatically by the global event listeners in `profile-upload.ts` when users interact with the upload UI.
-
-### Editing Profile Text
-The editing process is handled automatically by the global event listeners in `profile-editor.ts` when users interact with the edit buttons.
-
-### Showing Notifications
-```typescript
-showSuccess('Operation completed successfully!');
-showError('Something went wrong!');
-```
-
-### API Operations
-```typescript
-// Load profile data
-const profileData = await loadProfile();
-
-// Update profile
-const success = await updateProfile({ nickname: 'New Name' });
-
-// Upload profile picture
-const result = await uploadProfilePicture(blob);
-```
-
-## Benefits of This Structure
-
-1. **Separation of Concerns**: Each module has a single responsibility
-2. **Reusability**: Functions can be used independently
-3. **Maintainability**: Easier to find and fix issues
-4. **Testability**: Each function can be tested in isolation
-5. **Type Safety**: Strong TypeScript typing throughout
-6. **Top-level Functions**: Simple function calls instead of class instances
-7. **Direct Imports**: Import only what you need from specific modules
-8. **No Index File**: Direct imports reduce complexity and improve tree shaking
-
-## Migration from Original Files
-
-The original `profile.ts` and `profile-upload.ts` files have been refactored to use this modular structure. The functionality remains the same, but it's now better organized and more maintainable.

frontend/src/profile/api.ts

@@ -1,6 +1,24 @@
+/**
+ * @fileoverview Profile-related API calls
+ * @description Handles all profile-related HTTP requests to the backend
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import { getAuthHeaders } from '../auth';
 import type { ProfileData, UploadResponse } from './types';
 
+/**
+ * Loads user profile data from the server
+ * @async
+ * @function loadProfile
+ * @returns {Promise<ProfileData | null>} User profile data or null if failed
+ * @example
+ * const profile = await loadProfile();
+ * if (profile) {
+ *   console.log('User nickname:', profile.nickname);
+ * }
+ */
 export async function loadProfile(): Promise<ProfileData | null> {
     try {
         const response = await fetch('/api/user/profile', {
@@ -18,6 +36,20 @@ export async function loadProfile(): Promise<ProfileData | null> {
     }
 }
 
+/**
+ * Uploads a profile picture to the server
+ * @async
+ * @function uploadProfilePicture
+ * @param {Blob} file - The image file to upload
+ * @returns {Promise<UploadResponse | null>} Upload response with URL or null if failed
+ * @example
+ * const fileInput = document.getElementById('file-input');
+ * const file = fileInput.files[0];
+ * const result = await uploadProfilePicture(file);
+ * if (result) {
+ *   console.log('Uploaded to:', result.profile_picture_url);
+ * }
+ */
 export async function uploadProfilePicture(file: Blob): Promise<UploadResponse | null> {
     try {
         const formData = new FormData();
@@ -39,6 +71,21 @@ export async function uploadProfilePicture(file: Blob): Promise<UploadResponse |
     }
 }
 
+/**
+ * Updates user profile information
+ * @async
+ * @function updateProfile
+ * @param {Partial<ProfileData>} data - Profile data to update
+ * @returns {Promise<boolean>} True if update was successful, false otherwise
+ * @example
+ * const success = await updateProfile({
+ *   nickname: 'New Name',
+ *   description: 'Updated bio'
+ * });
+ * if (success) {
+ *   console.log('Profile updated successfully');
+ * }
+ */
 export async function updateProfile(data: Partial<ProfileData>): Promise<boolean> {
     try {
         const response = await fetch('/api/user/profile', {

frontend/src/profile/editor.ts

@@ -1,26 +1,59 @@
+/**
+ * @fileoverview Profile editing functionality
+ * @description Handles profile form editing and MDUI text field integration
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import { updateProfile } from './api';
 import { loadProfile } from './api';
-import { showSuccess, showError } from '../notification';
+import { showSuccess, showError } from '../utils/notification';
 import type { TextField } from 'mdui/components/text-field';
 
-// DOM elements
+let profileForm = document.getElementById('profile-form')!;
-let profileForm: HTMLElement;
+let nicknameField = document.getElementById('username-field') as unknown as TextField;
-let nicknameField: TextField; // MDUI TextField
+let descriptionField = document.getElementById('description-field') as unknown as TextField;
-let descriptionField: TextField; // MDUI TextField
+
+/**
+ * Initialization state flag
+ * @type {boolean}
+ */
 let isInitialized = false;
 
+/**
+ * Sets the username field value
+ * @param {string} value - The username value to set
+ * @function setUsernameValue
+ * @example
+ * setUsernameValue('John Doe');
+ */
 export function setUsernameValue(value: string): void {
     if (nicknameField && nicknameField.value !== undefined) {
         nicknameField.value = value;
     }
 }
 
+/**
+ * Sets the description field value
+ * @param {string} value - The description value to set
+ * @function setDescriptionValue
+ * @example
+ * setDescriptionValue('Software Developer');
+ */
 export function setDescriptionValue(value: string): void {
     if (descriptionField && descriptionField.value !== undefined) {
         descriptionField.value = value;
     }
 }
 
+/**
+ * Gets the current username field value
+ * @returns {string} The current username value
+ * @function getUsernameValue
+ * @example
+ * const username = getUsernameValue();
+ * console.log('Current username:', username);
+ */
 export function getUsernameValue(): string {
     if (nicknameField && nicknameField.value !== undefined) {
         return nicknameField.value;
@@ -28,6 +61,14 @@ export function getUsernameValue(): string {
     return '';
 }
 
+/**
+ * Gets the current description field value
+ * @returns {string} The current description value
+ * @function getDescriptionValue
+ * @example
+ * const description = getDescriptionValue();
+ * console.log('Current description:', description);
+ */
 export function getDescriptionValue(): string {
     if (descriptionField && descriptionField.value !== undefined) {
         return descriptionField.value;
@@ -35,6 +76,13 @@ export function getDescriptionValue(): string {
     return '';
 }
 
+/**
+ * Loads profile data from the server and populates the form fields
+ * @async
+ * @function loadProfileData
+ * @example
+ * await loadProfileData();
+ */
 export async function loadProfileData(): Promise<void> {
     const userData = await loadProfile();
     if (userData) {
@@ -47,16 +95,14 @@ export async function loadProfileData(): Promise<void> {
     }
 }
 
-// Setup form submission handler
+/**
-function setupFormHandler(): void {
+ * Handles profile form submission
-    if (isInitialized) return;
+ * @async
-    
+ * @function handleFormSubmission
-    // Get DOM elements
+ * @param {Event} e - Form submission event
-    profileForm = document.getElementById('profile-form')!;
+ * @private
-    nicknameField = document.getElementById('username-field') as any; // MDUI TextField
+ */
-    descriptionField = document.getElementById('description-field') as any; // MDUI TextField
+async function handleFormSubmission(e: Event): Promise<void> {
-
-    profileForm.addEventListener('submit', async (e) => {
     e.preventDefault();
     
     const nickname = getUsernameValue();
@@ -74,12 +120,32 @@ function setupFormHandler(): void {
             showError('Ошибка при обновлении профиля');
         }
     }
-    });
+}
+
+/**
+ * Sets up form submission handler
+ * @function setupFormHandler
+ * @private
+ */
+function setupFormHandler(): void {
+    if (isInitialized) return;
+    
+    // Get DOM elements
+    profileForm = document.getElementById('profile-form')!;
+    nicknameField = document.getElementById('username-field') as any;
+    descriptionField = document.getElementById('description-field') as any;
+
+    profileForm.addEventListener('submit', handleFormSubmission);
 
     isInitialized = true;
 }
 
-// Initialize editor functionality
+/**
+ * Initializes profile editor functionality
+ * @function initializeProfileEditor
+ * @example
+ * initializeProfileEditor();
+ */
 export function initializeProfileEditor(): void {
     setupFormHandler();
 }

frontend/src/profile/image-cropper.ts

@@ -1,14 +1,56 @@
+/**
+ * @fileoverview Canvas-based image cropping component
+ * @description Provides circular image cropping functionality with drag support
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import type { Size2D } from "../types";
 
+/**
+ * Image cropper class for circular profile picture cropping
+ * @class ImageCropper
+ */
 export class ImageCropper {
     private canvas: HTMLCanvasElement;
     private ctx: CanvasRenderingContext2D;
+
+    /**
+     * Image element to be cropped
+     * @type {HTMLImageElement}
+     * @private
+     */
     private image!: HTMLImageElement;
+
+    /**
+     * Size of the crop area (diameter)
+     * @type {number}
+     * @private
+     */
     private cropSize: number = 200;
     private isDragging: boolean = false;
+
+    /**
+     * Starting position of the drag operation
+     * @type {Size2D}
+     * @private
+     */
     private dragStart: Size2D = { x: 0, y: 0 };
+
+    /**
+     * Current position of the crop area
+     * @type {Size2D}
+     * @private
+     */
     private cropPosition: Size2D = { x: 0, y: 0 };
 
+    /**
+     * Creates a new ImageCropper instance
+     * @param {HTMLElement} container - Container element to append the canvas to
+     * @constructor
+     * @example
+     * const cropper = new ImageCropper(document.getElementById('cropper-area'));
+     */
     constructor(container: HTMLElement) {
         this.canvas = document.createElement('canvas');
         this.canvas.width = this.cropSize;
@@ -19,6 +61,11 @@ export class ImageCropper {
         this.setupEventListeners();
     }
 
+    /**
+     * Sets up mouse and touch event listeners
+     * @function setupEventListeners
+     * @private
+     */
     private setupEventListeners(): void {
         this.canvas.addEventListener('mousedown', this.onMouseDown.bind(this));
         this.canvas.addEventListener('mousemove', this.onMouseMove.bind(this));
@@ -28,11 +75,23 @@ export class ImageCropper {
         this.canvas.addEventListener('touchend', this.onTouchEnd.bind(this));
     }
 
+    /**
+     * Handles mouse down events
+     * @param {MouseEvent} e - Mouse event
+     * @function onMouseDown
+     * @private
+     */
     private onMouseDown(e: MouseEvent): void {
         this.isDragging = true;
         this.dragStart = { x: e.clientX, y: e.clientY };
     }
 
+    /**
+     * Handles mouse move events during dragging
+     * @param {MouseEvent} e - Mouse event
+     * @function onMouseMove
+     * @private
+     */
     private onMouseMove(e: MouseEvent): void {
         if (!this.isDragging) return;
         
@@ -46,10 +105,21 @@ export class ImageCropper {
         this.render();
     }
 
+    /**
+     * Handles mouse up events
+     * @function onMouseUp
+     * @private
+     */
     private onMouseUp(): void {
         this.isDragging = false;
     }
 
+    /**
+     * Handles touch start events
+     * @param {TouchEvent} e - Touch event
+     * @function onTouchStart
+     * @private
+     */
     private onTouchStart(e: TouchEvent): void {
         e.preventDefault();
         const touch = e.touches[0];
@@ -57,6 +127,12 @@ export class ImageCropper {
         this.dragStart = { x: touch.clientX, y: touch.clientY };
     }
 
+    /**
+     * Handles touch move events during dragging
+     * @param {TouchEvent} e - Touch event
+     * @function onTouchMove
+     * @private
+     */
     private onTouchMove(e: TouchEvent): void {
         e.preventDefault();
         if (!this.isDragging) return;
@@ -72,10 +148,23 @@ export class ImageCropper {
         this.render();
     }
 
+    /**
+     * Handles touch end events
+     * @function onTouchEnd
+     * @private
+     */
     private onTouchEnd(): void {
         this.isDragging = false;
     }
 
+    /**
+     * Loads an image file for cropping
+     * @param {File} file - Image file to load
+     * @returns {Promise<void>} Promise that resolves when image is loaded
+     * @async
+     * @example
+     * await cropper.loadImage(fileInput.files[0]);
+     */
     loadImage(file: File): Promise<void> {
         return new Promise((resolve) => {
             this.image = new Image();
@@ -87,6 +176,11 @@ export class ImageCropper {
         });
     }
 
+    /**
+     * Renders the image with circular crop overlay
+     * @function render
+     * @private
+     */
     private render(): void {
         if (!this.image) return;
 
@@ -119,10 +213,23 @@ export class ImageCropper {
         this.ctx.restore();
     }
 
+    /**
+     * Gets the cropped image as a data URL
+     * @returns {string} Data URL of the cropped image
+     * @example
+     * const croppedImage = cropper.getCroppedImage();
+     * // Use croppedImage as src for an img element
+     */
     getCroppedImage(): string {
         return this.canvas.toDataURL('image/jpeg', 0.8);
     }
 
+    /**
+     * Destroys the cropper and removes the canvas from DOM
+     * @function destroy
+     * @example
+     * cropper.destroy();
+     */
     destroy(): void {
         if (this.canvas.parentNode) {
             this.canvas.parentNode.removeChild(this.canvas);

frontend/src/profile/types.ts

@@ -1,9 +1,28 @@
+/**
+ * @fileoverview Profile-specific type definitions
+ * @description Contains type definitions for profile-related functionality
+ * @author Cursor
+ * @version 1.0.0
+ */
+
+/**
+ * User profile data structure
+ * @interface ProfileData
+ * @property {string} [profile_picture] - URL to user's profile picture
+ * @property {string} [nickname] - User's display name
+ * @property {string} [description] - User's bio or description
+ */
 export interface ProfileData {
     profile_picture?: string;
     nickname?: string;
     description?: string;
 }
 
+/**
+ * Profile picture upload response structure
+ * @interface UploadResponse
+ * @property {string} profile_picture_url - URL to the uploaded profile picture
+ */
 export interface UploadResponse {
     profile_picture_url: string;
 }

frontend/src/profile/upload.ts

@@ -1,35 +1,112 @@
+/**
+ * @fileoverview Profile picture upload functionality
+ * @description Handles file selection, image cropping, and profile picture upload
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import type { Dialog } from "mdui/components/dialog";
 import { ImageCropper } from './image-cropper';
 import { uploadProfilePicture } from './api';
 import { loadProfile } from './api';
-import { showSuccess, showError } from '../notification';
+import { showSuccess, showError } from '../utils/notification';
 
-// Global variables
+/**
+ * Global image cropper instance
+ * @type {ImageCropper | null}
+ */
 let cropper: ImageCropper | null = null;
+
+/**
+ * Initialization state flag
+ * @type {boolean}
+ */
 let isInitialized = false;
 
-// DOM elements
+let cropperDialog = document.getElementById('cropper-dialog') as Dialog;
-let cropperDialog: Dialog;
+let fileInput = document.getElementById('pfp-file-input') as HTMLInputElement;
-let fileInput: HTMLInputElement;
+let uploadBtn = document.getElementById('upload-pfp-btn')!;
-let uploadBtn: HTMLElement;
+let cropSaveBtn = document.getElementById('crop-save')!;
-let cropSaveBtn: HTMLElement;
+let cropCancelBtn = document.getElementById('crop-cancel')!;
-let cropCancelBtn: HTMLElement;
+let cropperCloseBtn = document.getElementById('cropper-close')!;
-let cropperCloseBtn: HTMLElement;
+let cropperArea = document.getElementById('cropper-area')!;
-let cropperArea: HTMLElement;
 
-// Setup event listeners
+/**
+ * Opens the image cropper with the selected file
+ * @async
+ * @function openCropper
+ * @param {File} file - The image file to crop
+ * @private
+ */
+async function openCropper(file: File): Promise<void> {
+    // Clear previous cropper
+    cropperArea.innerHTML = '';
+    
+    // Create new cropper
+    cropper = new ImageCropper(cropperArea);
+    
+    // Load image
+    await cropper.loadImage(file);
+    
+    // Open dialog
+    cropperDialog.open = true;
+}
+
+/**
+ * Closes the image cropper and cleans up resources
+ * @function closeCropper
+ * @private
+ */
+function closeCropper(): void {
+    cropperDialog.open = false;
+    cropperArea.innerHTML = '';
+    if (cropper) {
+        cropper.destroy();
+        cropper = null;
+    }
+    fileInput.value = '';
+}
+
+/**
+ * Saves the cropped image and uploads it to the server
+ * @async
+ * @function saveCroppedImage
+ * @private
+ */
+async function saveCroppedImage(): Promise<void> {
+    if (!cropper) return;
+
+    const croppedImageData = cropper.getCroppedImage();
+    
+    // Convert data URL to blob
+    const response = await fetch(croppedImageData);
+    const blob = await response.blob();
+    
+    const result = await uploadProfilePicture(blob);
+    
+    if (result) {
+        // Update profile picture display
+        const profilePicture = document.getElementById('profile-picture') as HTMLImageElement;
+        profilePicture.src = result.profile_picture_url + '?t=' + Date.now(); // Cache bust
+        
+        // Close cropper
+        closeCropper();
+        
+        // Show success message
+        showSuccess('Фото профиля обновлено!');
+    } else {
+        showError('Ошибка при загрузке фото');
+    }
+}
+
+/**
+ * Sets up event listeners for upload functionality
+ * @function setupEventListeners
+ * @private
+ */
 function setupEventListeners(): void {
     if (isInitialized) return;
 
-    // Get DOM elements
-    cropperDialog = document.getElementById('cropper-dialog') as Dialog;
-    fileInput = document.getElementById('pfp-file-input') as HTMLInputElement;
-    uploadBtn = document.getElementById('upload-pfp-btn')!;
-    cropSaveBtn = document.getElementById('crop-save')!;
-    cropCancelBtn = document.getElementById('crop-cancel')!;
-    cropperCloseBtn = document.getElementById('cropper-close')!;
-    cropperArea = document.getElementById('cropper-area')!;
-
     uploadBtn.addEventListener('click', () => {
         fileInput.click();
     });
@@ -56,65 +133,31 @@ function setupEventListeners(): void {
     isInitialized = true;
 }
 
-async function openCropper(file: File): Promise<void> {
+/**
-    // Clear previous cropper
+ * Loads and displays the user's profile picture
-    cropperArea.innerHTML = '';
+ * @async
-    
+ * @function loadProfilePicture
-    // Create new cropper
+ * @example
-    cropper = new ImageCropper(cropperArea);
+ * await loadProfilePicture();
-    
+ */
-    // Load image
-    await cropper.loadImage(file);
-    
-    // Open dialog
-    cropperDialog.open = true;
-}
-
-function closeCropper(): void {
-    cropperDialog.open = false;
-    cropperArea.innerHTML = '';
-    if (cropper) {
-        cropper.destroy();
-        cropper = null;
-    }
-    fileInput.value = '';
-}
-
-async function saveCroppedImage(): Promise<void> {
-    if (!cropper) return;
-
-    const croppedImageData = cropper.getCroppedImage();
-    
-    // Convert data URL to blob
-    const response = await fetch(croppedImageData);
-    const blob = await response.blob();
-    
-    const result = await uploadProfilePicture(blob);
-    
-    if (result) {
-        // Update profile picture display
-        const profilePicture = document.getElementById('profile-picture') as HTMLImageElement;
-        profilePicture.src = result.profile_picture_url + '?t=' + Date.now(); // Cache bust
-        
-        // Close cropper
-        closeCropper();
-        
-        // Show success message
-        showSuccess('Фото профиля обновлено!');
-    } else {
-        showError('Ошибка при загрузке фото');
-    }
-}
-
 export async function loadProfilePicture(): Promise<void> {
     const userData = await loadProfile();
     if (userData?.profile_picture) {
+        const url = `${userData.profile_picture}?t=${Date.now()}`;
+
         const profilePicture = document.getElementById('profile-picture') as HTMLImageElement;
-        profilePicture.src = userData.profile_picture + '?t=' + Date.now(); // Cache bust
+        const profilePicture2 = document.getElementById("preview1") as HTMLImageElement;
+        profilePicture.src = url;
+        profilePicture2.src = url;
     }
 }
 
-// Initialize upload functionality
+/**
+ * Initializes profile upload functionality
+ * @function initializeProfileUpload
+ * @example
+ * initializeProfileUpload();
+ */
 export function initializeProfileUpload(): void {
     setupEventListeners();
 }

frontend/src/settings.ts

@@ -1,3 +1,10 @@
+/**
+ * @fileoverview Settings dialog management and panel navigation
+ * @description Handles settings dialog functionality and dynamic panel switching
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import type { Dialog } from "mdui/components/dialog";
 
 const dialog = document.getElementById('settings-dialog') as Dialog;
@@ -8,13 +15,11 @@ const closeButton = document.getElementById('settings-close')!;
 const settingsList = document.querySelector('#settings-menu mdui-list')!;
 const settingsPanels = document.querySelectorAll('.settings-panel');
 
-// Initialize settings
+/**
-function initializeSettings() {
+ * Mapping between list item text and their corresponding panel IDs
-    // Add click listeners to all list items
+ * @type {Object.<string, string>}
-    const listItems = settingsList.querySelectorAll('mdui-list-item');
+ */
-    
+const panelMapping = {
-    // Create a mapping between list items and their corresponding panels
-    const panelMapping = {
     'Уведомления': 'notifications-settings',
     'Внешний вид': 'appearance-settings',
     'Безопасность': 'security-settings',
@@ -22,11 +27,17 @@ function initializeSettings() {
     'Хранилище': 'storage-settings',
     'Помощь': 'help-settings',
     'О приложении': 'about-settings'
-    };
+};
 
-    listItems.forEach((item) => {
+/**
-        item.addEventListener('click', () => {
+ * Handles click events on settings list items
+ * @param {Element} item - The clicked list item element
+ * @function handleListItemClick
+ * @private
+ */
+function handleListItemClick(item: Element): void {
     // Remove active class from all items and panels
+    const listItems = settingsList.querySelectorAll('mdui-list-item');
     listItems.forEach(li => li.removeAttribute('active'));
     settingsPanels.forEach(panel => panel.classList.remove('active'));
     
@@ -43,14 +54,26 @@ function initializeSettings() {
             targetPanel.classList.add('active');
         }
     }
-        });
+}
+
+/**
+ * Sets up click listeners for all settings list items
+ * @function setupSettingsNavigation
+ * @private
+ */
+function setupSettingsNavigation(): void {
+    const listItems = settingsList.querySelectorAll('mdui-list-item');
+    listItems.forEach((item) => {
+        item.addEventListener('click', () => handleListItemClick(item));
     });
 }
 
-// Dialog event listeners
+/**
-openButton.addEventListener('click', () => {
+ * Resets settings dialog to show the first panel
-    dialog.open = true;
+ * @function resetToFirstPanel
-    // Reset to first panel when opening
+ * @private
+ */
+function resetToFirstPanel(): void {
     const firstItem = settingsList.querySelector('mdui-list-item');
     const firstPanel = document.querySelector('.settings-panel');
     if (firstItem && firstPanel) {
@@ -59,15 +82,23 @@ openButton.addEventListener('click', () => {
         firstItem.setAttribute('active', '');
         firstPanel.classList.add('active');
     }
-});
-
-closeButton.addEventListener('click', () => {
-    dialog.open = false;
-});
-
-// Initialize when DOM is loaded
-if (document.readyState === 'loading') {
-    document.addEventListener('DOMContentLoaded', initializeSettings);
-} else {
-    initializeSettings();
 }
+
+/**
+ * Sets up dialog event listeners
+ * @function setupDialogListeners
+ * @private
+ */
+function setupDialogListeners(): void {
+    openButton.addEventListener('click', () => {
+        dialog.open = true;
+        resetToFirstPanel();
+    });
+
+    closeButton.addEventListener('click', () => {
+        dialog.open = false;
+    });
+}
+
+setupSettingsNavigation();
+setupDialogListeners();

frontend/src/types.ts

@@ -1,16 +1,48 @@
+/**
+ * @fileoverview Global TypeScript type definitions
+ * @description Contains all type definitions used throughout the application
+ * @author Cursor
+ * @version 1.0.0
+ */
+
+/**
+ * HTTP headers object type
+ * @typedef {Object.<string, string>} Headers
+ */
 export type Headers = {[x: string]: string}
 
+/**
+ * API error response structure
+ * @interface ErrorResponse
+ * @property {string} message - Error message from the server
+ */
 export interface ErrorResponse {
     message: string;
 }
 
+/**
+ * 2D coordinate structure
+ * @interface Size2D
+ * @property {number} x - X coordinate
+ * @property {number} y - Y coordinate
+ */
 export interface Size2D {
     x: number;
     y: number;
 }
 
-
 // App types
+
+/**
+ * Chat message structure
+ * @interface Message
+ * @property {number} id - Unique message identifier
+ * @property {string} username - Username of the message sender
+ * @property {string} content - Message content
+ * @property {boolean} is_read - Whether the message has been read
+ * @property {string} timestamp - ISO timestamp of the message
+ * @property {string} [profile_picture] - URL to sender's profile picture
+ */
 export interface Message {
     id: number;
     username: string;
@@ -20,10 +52,24 @@ export interface Message {
     profile_picture?: string;
 }
 
+/**
+ * Collection of messages
+ * @interface Messages
+ * @property {Message[]} messages - Array of message objects
+ */
 export interface Messages {
     messages: Message[];
 }
 
+/**
+ * User information structure
+ * @interface User
+ * @property {number} id - Unique user identifier
+ * @property {string} created_at - ISO timestamp of account creation
+ * @property {string} last_seen - ISO timestamp of last activity
+ * @property {boolean} online - Whether the user is currently online
+ * @property {string} username - Username
+ */
 export interface User {
     id: number;
     created_at: string;
@@ -32,17 +78,30 @@ export interface User {
     username: string;
 }
 
-
 // ----------
 // API models
 // ----------
 
 // Requests
+
+/**
+ * Login request structure
+ * @interface LoginRequest
+ * @property {string} username - Username for authentication
+ * @property {string} password - Password for authentication
+ */
 export interface LoginRequest {
     username: string;
     password: string;
 }
 
+/**
+ * Registration request structure
+ * @interface RegisterRequest
+ * @property {string} username - Desired username
+ * @property {string} password - Desired password
+ * @property {string} confirm_password - Password confirmation
+ */
 export interface RegisterRequest {
     username: string;
     password: string;
@@ -50,6 +109,13 @@ export interface RegisterRequest {
 }
 
 // Responses
+
+/**
+ * Login response structure
+ * @interface LoginResponse
+ * @property {User} user - User information
+ * @property {string} token - JWT authentication token
+ */
 export interface LoginResponse {
     user: User;
     token: string;
@@ -59,6 +125,14 @@ export interface LoginResponse {
 // WebSocket types
 // ---------------
 
+/**
+ * WebSocket message structure
+ * @interface WebSocketMessage
+ * @property {string} type - Message type identifier
+ * @property {WebSocketCredentials} [credentials] - Authentication credentials
+ * @property {any} [data] - Message payload data
+ * @property {WebSocketError} [error] - Error information if applicable
+ */
 export interface WebSocketMessage {
     type: string;
     credentials?: WebSocketCredentials;
@@ -66,11 +140,23 @@ export interface WebSocketMessage {
     error?: WebSocketError;
 }
 
+/**
+ * WebSocket error structure
+ * @interface WebSocketError
+ * @property {number} code - Error code
+ * @property {string} detail - Error detail message
+ */
 export interface WebSocketError {
     code: number;
     detail: string;
 }
 
+/**
+ * WebSocket authentication credentials
+ * @interface WebSocketCredentials
+ * @property {string} scheme - Authentication scheme (e.g., "Bearer")
+ * @property {string} credentials - Authentication token or credentials
+ */
 export interface WebSocketCredentials {
     scheme: string;
     credentials: string;

frontend/src/utils.ts

@@ -1,12 +0,0 @@
-export function formatTime(dateString: string) {
-    const date = new Date(dateString);
-    let hours = date.getHours();
-    let minutes = date.getMinutes();
-    const hoursString = hours < 10 ? '0' + hours : hours;
-    const minutesString = minutes < 10 ? '0' + minutes : minutes;
-    return hoursString + ':' + minutesString;
-}
-
-export function delay(ms: number): Promise<void> {
-    return new Promise(resolve => setTimeout(resolve, ms));
-}

frontend/src/utils/material.ts

@@ -1,3 +1,10 @@
+/**
+ * @fileoverview MDUI component imports and configuration
+ * @description Imports all required MDUI components and sets up the theme
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import 'mdui/components/tabs';
 import 'mdui/components/tab';
 import 'mdui/components/tab-panel';

frontend/src/utils/notification.ts

@@ -1,5 +1,23 @@
+/**
+ * @fileoverview User notification system
+ * @description Provides toast-style notifications for user feedback
+ * @author Cursor
+ * @version 1.0.0
+ */
+
+/**
+ * Notification type enumeration
+ * @typedef {'success' | 'error'} NotificationType
+ */
 export type NotificationType = 'success' | 'error';
 
+/**
+ * Shows a notification with the specified message and type
+ * @param {string} message - The message to display
+ * @param {NotificationType} type - The type of notification (success or error)
+ * @function showNotification
+ * @private
+ */
 function showNotification(message: string, type: NotificationType): void {
     const notification = document.createElement('div');
     notification.textContent = message;
@@ -28,10 +46,24 @@ function showNotification(message: string, type: NotificationType): void {
     }, 3000);
 }
 
+/**
+ * Shows a success notification
+ * @param {string} message - The success message to display
+ * @function showSuccess
+ * @example
+ * showSuccess('Profile updated successfully!');
+ */
 export function showSuccess(message: string): void {
     showNotification(message, 'success');
 }
 
+/**
+ * Shows an error notification
+ * @param {string} message - The error message to display
+ * @function showError
+ * @example
+ * showError('Failed to update profile');
+ */
 export function showError(message: string): void {
     showNotification(message, 'error');
 }

frontend/src/utils/utils.ts

@@ -0,0 +1,33 @@
+/**
+ * @fileoverview Utility functions used throughout the application
+ * @description Contains helper functions for common operations
+ * @author Cursor
+ * @version 1.0.0
+ */
+
+/**
+ * Formats a timestamp string to HH:MM format
+ * @param {string} dateString - ISO timestamp string to format
+ * @returns {string} Formatted time string in HH:MM format
+ * @example
+ * formatTime('2024-01-15T14:30:00Z'); // Returns "14:30"
+ */
+export function formatTime(dateString: string): string {
+    const date = new Date(dateString);
+    let hours = date.getHours();
+    let minutes = date.getMinutes();
+    const hoursString = hours < 10 ? '0' + hours : hours;
+    const minutesString = minutes < 10 ? '0' + minutes : minutes;
+    return hoursString + ':' + minutesString;
+}
+
+/**
+ * Creates a promise that resolves after a specified delay
+ * @param {number} ms - Delay time in milliseconds
+ * @returns {Promise<void>} Promise that resolves after the delay
+ * @example
+ * await delay(1000); // Wait for 1 second
+ */
+export function delay(ms: number): Promise<void> {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}

frontend/src/websocket.ts

@@ -1,13 +1,30 @@
+/**
+ * @fileoverview WebSocket connection management for real-time chat
+ * @description Handles WebSocket connections, message processing, and auto-reconnection
+ * @author Cursor
+ * @version 1.0.0
+ */
+
 import { currentUser } from "./auth";
 import { addMessage } from "./chat";
 import { API_FULL_BASE_URL } from "./config";
 import type { WebSocketMessage, Message } from "./types";
-import { delay } from "./utils";
+import { delay } from "./utils/utils";
 
-function create() {
+/**
+ * Creates a new WebSocket connection to the chat server
+ * @function create
+ * @returns {WebSocket} New WebSocket instance
+ * @private
+ */
+function create(): WebSocket {
     return new WebSocket(`ws://${API_FULL_BASE_URL}/chat/ws`);
 }
 
+/**
+ * Global WebSocket instance
+ * @type {WebSocket}
+ */
 export let websocket = create();
 
 // --------------