🔔 Notification Module - TypeScript Functions

/**
 * Component initialization with notification setup
 * Loads system notifications and user preferences
 * Initializes real-time notification monitoring
 * Sets up notification filtering and pagination
 * Configures notification display settings
 * @returns {void}
 */
ngOnInit(): void

/**
 * Component cleanup and subscription management
 * Unsubscribes from real-time notification streams
 * Cleans up WebSocket connections
 * Saves notification state and preferences
 * @returns {void}
 */
ngOnDestroy(): void

/**
 * Loads system notifications with filtering and pagination
 * Retrieves notifications from backend with status filtering
 * Applies user-specific notification preferences
 * Handles pagination and infinite scroll loading
 * Updates notification display and counters
 * @returns {void}
 */
loadNotifications(): void

/**
 * Creates and sends new system notification
 * Validates notification content and recipients
 * Processes notification targeting and scheduling
 * Submits notification through service layer
 * Updates notification list with new item
 * @param {any} notificationData - Notification content and targeting
 * @returns {void}
 */
createNotification(notificationData: any): void

/**
 * Filters notifications by type, status, or date
 * Applies client-side and server-side filtering
 * Updates notification display based on criteria
 * Maintains filter state and preferences
 * Handles complex multi-criteria filtering
 * @param {string} filterType - Filter criteria to apply
 * @returns {void}
 */
filterNotifications(filterType: string): void

/**
 * Marks specific notification as read
 * Updates notification read status in backend
 * Updates UI to reflect read state
 * Decrements unread notification counter
 * Triggers read status change events
 * @param {string} notificationId - ID of notification to mark as read
 * @returns {void}
 */
markAsRead(notificationId: string): void

/**
 * Marks all notifications as read
 * Bulk updates all unread notifications
 * Resets unread counter to zero
 * Updates UI to reflect all-read state
 * Provides user feedback on action completion
 * @returns {void}
 */
markAllAsRead(): void

/**
 * Deletes notification from system
 * Confirms deletion with user prompt
 * Removes notification from backend
 * Updates UI to remove deleted notification
 * Handles deletion errors and rollback
 * @param {string} notificationId - ID of notification to delete
 * @returns {void}
 */
deleteNotification(notificationId: string): void

/**
 * Handles window scroll events for notification tracking
 * Tracks scroll position to mark notifications as read
 * Implements infinite scroll loading for large lists
 * Monitors notification visibility in viewport
 * Triggers auto-read functionality
 * @param {any} event - Scroll event data
 * @returns {void}
 */
@HostListener('window:scroll', ['$event']) onScroll(event: any): void

/**
 * Checks if notification element is visible in viewport
 * Calculates element position relative to viewport
 * Determines visibility percentage and threshold
 * Used for auto-read functionality
 * Supports responsive layouts and different screen sizes
 * @param {any} element - DOM element to check
 * @returns {boolean} True if element is visible
 */
isElementInViewport(element: any): boolean

/**
 * Truncates notification titles for display
 * Adds ellipsis when title exceeds maximum length
 * Preserves word boundaries when possible
 * Used for consistent table and list display
 * Handles various character encodings
 * @param {string} title - Title to truncate
 * @param {number} maxLength - Maximum length allowed
 * @returns {string} Truncated title with ellipsis
 */
truncateTitle(title: string, maxLength: number): string

/**
 * Formats notification dates for display
 * Provides relative time formatting (e.g., '2 hours ago')
 * Handles different time zones and localization
 * Uses appropriate format based on age of notification
 * Supports real-time updating of relative times
 * @param {Date} date - Date to format
 * @returns {string} Formatted date string
 */
formatNotificationDate(date: Date): string

/**
 * Sets up rich text email editor
 * Configures WYSIWYG editor with formatting options
 * Loads email templates and snippets
 * Sets up attachment handling and preview
 * Initializes spell checking and validation
 * @returns {void}
 */
initializeEditor(): void

/**
 * Loads available email templates
 * Retrieves templates from template library
 * Organizes templates by category and type
 * Provides template preview and selection
 * Handles template personalization variables
 * @returns {void}
 */
loadEmailTemplates(): void

/**
 * Inserts selected template into email editor
 * Loads template content and applies formatting
 * Handles template variables and personalization
 * Maintains cursor position and editor state
 * Provides template customization options
 * @param {string} templateId - Template ID to insert
 * @returns {void}
 */
insertTemplate(templateId: string): void

/**
 * Adds file attachment to email
 * Validates file type and size restrictions
 * Uploads file to temporary storage
 * Updates attachment list and UI
 * Handles file preview and metadata
 * @param {File} file - File to attach
 * @returns {void}
 */
addAttachment(file: File): void

/**
 * Sends composed email to recipients
 * Validates email content and recipients
 * Processes attachments and inline images
 * Submits email through service layer
 * Provides sending status and confirmation
 * @returns {void}
 */
sendEmail(): void

/**
 * Loads email history and tracking information
 * Retrieves sent, received, and scheduled emails
 * Includes delivery status and analytics
 * Supports filtering and search capabilities
 * Updates email list with status indicators
 * @returns {void}
 */
loadEmailHistory(): void

/**
 * Tracks email delivery status and analytics
 * Retrieves delivery confirmations and bounce reports
 * Monitors open rates and click-through data
 * Updates status indicators and metrics
 * Provides detailed delivery analytics
 * @param {string} emailId - Email ID to track
 * @returns {void}
 */
trackEmailDelivery(emailId: string): void

/**
 * Sends notification through appropriate channel
 * Routes notification to email, SMS, or push channels
 * Handles notification scheduling and delivery
 * Processes notification templates and personalization
 * Returns delivery status and tracking information
 * @param {any} notificationData - Notification configuration and content
 * @returns {Observable<any>} Notification sending result
 */
sendNotification(notificationData: any): Observable<any>

/**
 * Retrieves notifications for specific user
 * Fetches notifications based on user preferences
 * Includes read/unread status and metadata
 * Supports pagination and filtering
 * Returns structured notification data
 * @param {string} userId - User ID to fetch notifications for
 * @returns {Observable<any>} User notifications
 */
getNotifications(userId: string): Observable<any>

/**
 * Updates notification read/status state
 * Changes notification status in backend
 * Triggers status change events and updates
 * Handles bulk status updates
 * Returns update confirmation
 * @param {string} notificationId - Notification ID to update
 * @param {string} status - New status (read, unread, archived)
 * @returns {Observable<any>} Update result
 */
updateNotificationStatus(notificationId: string, status: string): Observable<any>

/**
 * Retrieves user notification preferences
 * Fetches channel preferences and settings
 * Returns notification frequency and type preferences
 * Includes opt-in/opt-out settings
 * @param {string} userId - User ID to get preferences for
 * @returns {Observable<any>} User notification preferences
 */
getNotificationPreferences(userId: string): Observable<any>