📱 SMS Module - TypeScript Functions

/**
 * Component initialization with SMS interface setup
 * Loads message history and contact lists
 * Initializes message composition interface
 * Sets up real-time delivery status monitoring
 * Configures SMS templates and quick actions
 * @returns {void}
 */
ngOnInit(): void

/**
 * Component cleanup and resource management
 * Saves draft messages and component state
 * Unsubscribes from real-time updates
 * Cleans up WebSocket connections
 * @returns {void}
 */
ngOnDestroy(): void

/**
 * Sends SMS message to specified recipients
 * Validates message content and recipient numbers
 * Handles message segmentation for long messages
 * Submits message to SMS gateway for delivery
 * Initiates delivery tracking and status monitoring
 * @param {any} message - Message object with content and recipients
 * @returns {void}
 */
sendSMS(message: any): void

/**
 * Sends bulk SMS campaign to multiple recipients
 * Validates campaign configuration and compliance
 * Processes recipient lists and personalization
 * Handles batch processing and rate limiting
 * Provides campaign progress tracking
 * @param {any} campaign - Campaign configuration with message and audience
 * @returns {void}
 */
sendBulkSMS(campaign: any): void

/**
 * Schedules SMS message for future delivery
 * Validates scheduling parameters and timezone
 * Stores message in scheduling queue
 * Sets up delivery triggers and reminders
 * Handles timezone conversions and delivery windows
 * @param {any} message - Message to schedule
 * @param {Date} scheduleDate - Delivery date and time
 * @returns {void}
 */
scheduleSMS(message: any, scheduleDate: Date): void

/**
 * Retrieves delivery status for specific message
 * Queries SMS gateway for delivery reports
 * Updates message status in real-time
 * Handles delivery confirmations and failures
 * Provides detailed status information
 * @param {string} messageId - Message ID to track
 * @returns {void}
 */
getDeliveryStatus(messageId: string): void

/**
 * Generates comprehensive SMS analytics report
 * Compiles delivery statistics and performance metrics
 * Analyzes campaign success rates and engagement
 * Creates visual charts and data visualizations
 * Exports report in multiple formats
 * @returns {void}
 */
generateSMSReport(): void

/**
 * Loads and processes contact lists
 * Retrieves contacts from various sources
 * Validates phone numbers and formats
 * Organizes contacts by groups and categories
 * Updates contact selection interface
 * @returns {void}
 */
loadContacts(): void

/**
 * Imports contacts from file upload
 * Supports CSV, Excel, and vCard formats
 * Validates and sanitizes contact data
 * Handles duplicate detection and merging
 * Provides import progress and error reporting
 * @param {File} file - Contact file to import
 * @returns {void}
 */
importContacts(file: File): void

/**
 * Validates and formats phone numbers
 * Checks number format and country codes
 * Removes invalid numbers and duplicates
 * Formats numbers according to international standards
 * Returns array of validated phone numbers
 * @param {string[]} numbers - Array of phone numbers to validate
 * @returns {string[]} Array of valid phone numbers
 */
validatePhoneNumbers(numbers: string[]): string[]

/**
 * Sets up message composition interface
 * Loads message templates and quick responses
 * Configures character counting and message segmentation
 * Sets up recipient selection and validation
 * Initializes personalization variables
 * @returns {void}
 */
initializeComposer(): void

/**
 * Inserts selected template into message composer
 * Loads template content and variables
 * Handles template personalization placeholders
 * Updates character count and message preview
 * Maintains cursor position and formatting
 * @param {string} templateId - ID of template to insert
 * @returns {void}
 */
insertTemplate(templateId: string): void

/**
 * Generates real-time message preview
 * Renders message with sample personalization data
 * Shows message segmentation and character counts
 * Displays delivery cost estimates
 * Updates preview as user types
 * @returns {void}
 */
previewMessage(): void

/**
 * Calculates estimated message delivery cost
 * Considers message segments and recipient count
 * Applies pricing rules and bulk discounts
 * Handles international and domestic rates
 * Returns total estimated cost
 * @returns {number} Estimated delivery cost
 */
calculateMessageCost(): number

/**
 * Sends SMS message through API gateway
 * Validates message data and recipient numbers
 * Handles message routing and carrier selection
 * Processes delivery receipts and status updates
 * Returns observable with sending result
 * @param {any} messageData - Message configuration and content
 * @returns {Observable<any>} Message sending result
 */
sendMessage(messageData: any): Observable<any>

/**
 * Retrieves SMS message history and logs
 * Fetches sent, received, and scheduled messages
 * Includes delivery status and analytics data
 * Supports filtering and pagination
 * Returns complete message history
 * @returns {Observable<any>} Message history data
 */
getMessageHistory(): Observable<any>

/**
 * Retrieves delivery reports for specific messages
 * Queries carrier delivery status information
 * Compiles detailed delivery analytics
 * Handles batch report processing
 * Returns comprehensive delivery data
 * @param {string[]} messageIds - Array of message IDs
 * @returns {Observable<any>} Delivery reports
 */
getDeliveryReports(messageIds: string[]): Observable<any>

/**
 * Pipe for formatting message delivery status
 * Usage: {{ status | messageStatus }}
 * Converts status codes to human-readable labels
 * Adds appropriate icons and color coding
 * @param {string} value - Status code to format
 * @returns {string} Formatted status display
 */
transform(value: string): string

/**
 * Pipe for calculating SMS segments
 * Usage: {{ message | messageSegment }}
 * Calculates number of SMS segments required
 * Handles GSM 7-bit and UCS-2 encoding
 * @param {string} value - Message text to analyze
 * @returns {number} Number of SMS segments
 */
transform(value: string): number