Communication Tools

Integrated communication suite featuring email management, real-time chat, calendar scheduling, and notification systems with enterprise-grade UI patterns and responsive design.

Real-time Chat Advanced Email Calendar Integration

Email Management System

Advanced Email Architecture

The email system demonstrates complex state management and responsive design patterns:

Core Features:

Multi-folder email organization (Inbox, Sent, Drafts, etc.)
Advanced search and filtering capabilities
Responsive three-panel layout
Real-time email operations with optimistic updates

// Email System State Management
const [selectedEmail, setSelectedEmail] = useState<Email | null>(null)
const [layoutMode, setLayoutMode] = useState<LayoutMode>('list')
const [isComposing, setIsComposing] = useState(false)
const [composeMode, setComposeMode] = useState<ComposeMode>('compose')
const [showMobileSidebar, setShowMobileSidebar] = useState(false)

// Responsive layout logic
const shouldShowDesktopSidebar = !isMobile
const shouldShowEmailList = isDesktop || layoutMode === 'list'
const shouldShowMainContent = isDesktop || layoutMode === 'detail' || layoutMode === 'compose'

Email Operations

Bulk Actions Implementation:

Mark multiple emails as read/unread
Bulk delete and archive operations
Star/unstar multiple emails
Spam management with batch processing

// Bulk Operations Handler
const handleBulkAction = useCallback(
async (action: string, emailIds: string[]) => {
  try {
    switch (action) {
      case 'mark-read':
        await markAsRead(emailIds)
        toast.success(`${emailIds.length} emails marked as read`)
        break
      case 'delete':
        await deleteEmails(emailIds)
        if (selectedEmail && emailIds.includes(selectedEmail.id)) {
          setSelectedEmail(null)
          setLayoutMode('list')
        }
        toast.success(`${emailIds.length} emails moved to trash`)
        break
    }
  } catch {
    toast.error('Failed to perform bulk action')
  }
},
[markAsRead, deleteEmails, selectedEmail]
)

Responsive Email Layout

The email system uses advanced responsive patterns:

Mobile Adaptations:

Collapsible sidebar with animation
Mode-based view switching (list/detail/compose)
Touch-friendly interface elements
Backdrop overlay for mobile sidebar

Real-time Chat System

Chat Architecture

Sophisticated chat implementation with performance optimizations:

State Management:

Memoized chat sessions for performance
Optimistic UI updates for instant feedback
Typing indicators with timeout management
Auto-focus management for improved UX

// Chat Message Handler with Optimizations
const handleSendMessage = useCallback(() => {
if (!newMessage.trim() || !selectedChat || isLoading) return

try {
  setIsLoading(true)
  setError(null)

  const messageId = `msg-${Date.now()}`
  const newMessageObj: Message = {
    id: messageId,
    senderId: 'current',
    content: newMessage.trim(),
    timestamp: new Date().toISOString(),
    type: 'text',
    isRead: false,
  }

  // Optimistic update - Update UI immediately
  setChatSessions((prevSessions) => {
    return prevSessions.map((session) => {
      if (session.id === selectedChat.id) {
        const updatedMessages = [...session.messages, newMessageObj]
        return {
          ...session,
          messages: updatedMessages,
          lastMessage: newMessageObj,
          lastActivity: newMessageObj.timestamp,
        }
      }
      return session
    })
  })

  setNewMessage('')
  toast.success('Message sent successfully')
} catch (err) {
  toast.error('Failed to send message')
} finally {
  setIsLoading(false)
}
}, [newMessage, selectedChat, isLoading])

Performance Optimizations

Memory Management:

Cleanup of timeouts on component unmount
Efficient memoization of sorted chat sessions
Proper event listener cleanup
Auto-focus timeout management

// Memoized Sorted Sessions
const sortedChatSessions = useMemo(() => {
return [...chatSessions].sort(
  (a, b) => new Date(b.lastActivity).getTime() - new Date(a.lastActivity).getTime()
)
}, [chatSessions])

// Cleanup Effect
useEffect(() => {
return () => {
  if (typingTimeout) {
    clearTimeout(typingTimeout)
  }
  if (autoFocusTimeoutRef.current) {
    clearTimeout(autoFocusTimeoutRef.current)
  }
}
}, [typingTimeout])

Chat Components

UserList: Sidebar with chat sessions and search ChatHeader: Contact information and actions MessageList: Scrollable message history MessageInput: Rich input with typing indicators

Calendar System

Event Management

Comprehensive calendar implementation using modern React patterns:

Key Features:

Multiple calendar views (month, week, day)
Drag-and-drop event scheduling
Recurring event management
Event form with validation
Attendee management system

Event Creation
- Dynamic form with date/time pickers
- Attendee invitation system
- Category and priority selection
Event Management
- Edit existing events
- Recurring event patterns
- Conflict detection
Notifications
- Email reminders
- Browser notifications
- Custom reminder intervals

Calendar Architecture

// Calendar Hook Pattern
const useEvents = () => {
const [events, setEvents] = useState<CalendarEvent[]>([]);
const [loading, setLoading] = useState(false);
const [selectedEvent, setSelectedEvent] = useState<CalendarEvent | null>(null);

const createEvent = useCallback(async (eventData: CreateEventData) => {
  setLoading(true);
  try {
    const newEvent = await eventService.create(eventData);
    setEvents(prev => [...prev, newEvent]);
    return newEvent;
  } finally {
    setLoading(false);
  }
}, []);

return { events, loading, selectedEvent, createEvent };
};

Integration Patterns

Communication System Architecture

All communication modules share common patterns:

Shared Patterns

State Management:

Custom hooks for data operations
Optimistic UI updates for better UX
Error boundaries and fallbacks

Performance:

Memoization of expensive computations
Virtual scrolling for large lists
Debounced search and filtering

Accessibility:

ARIA labels and roles
Keyboard navigation support
Screen reader compatibility
Focus management

Real-time Features

The communication suite supports real-time updates through:

WebSocket Integration: Live message delivery Notification System: Browser and email alerts Presence Indicators: Online/offline status Typing Indicators: Real-time typing feedback

// Real-time Connection Pattern
const useRealTimeConnection = (userId: string) => {
const [connected, setConnected] = useState(false);
const [socket, setSocket] = useState<WebSocket | null>(null);

useEffect(() => {
  const ws = new WebSocket(`ws://localhost:8080/chat/${userId}`);

  ws.onopen = () => setConnected(true);
  ws.onclose = () => setConnected(false);

  setSocket(ws);

  return () => ws.close();
}, [userId]);

return { socket, connected };
};

This comprehensive communication system provides all the tools needed for modern business collaboration with enterprise-grade performance and reliability.