/**
 * Event utility functions for event management
 */
/**
 * Generate a random alphanumeric event code
 * @param length - Length of the code (default: 6)
 * @returns Random event code
 */
export declare const generateEventCode: (length?: number) => string;
/**
 * Generate a smart event code based on the event title
 * @param title - Event title
 * @returns Smart event code
 */
export declare const generateSmartEventCode: (title: string) => string;
/**
 * Validate event code format
 * @param code - Event code to validate
 * @returns Object with validation result and error message
 */
export declare const validateEventCode: (code: string) => {
    isValid: boolean;
    error?: string;
};
/**
 * Format event date for display
 * @param dateString - Date string in YYYY-MM-DD format
 * @returns Formatted date string
 */
export declare const formatEventDate: (dateString: string) => string;
/**
 * Check if an event is happening today
 * @param eventDate - Event date string
 * @returns True if event is today
 */
export declare const isEventToday: (eventDate: string) => boolean;
/**
 * Check if an event is in the past
 * @param eventDate - Event date string
 * @returns True if event is in the past
 */
export declare const isEventPast: (eventDate: string) => boolean;
/**
 * Get event status based on date and active status
 * @param eventDate - Event date string
 * @param isActive - Whether event is active
 * @returns Event status string
 */
export declare const getEventStatus: (eventDate: string, isActive: boolean) => string;
/**
 * Calculate days until event
 * @param eventDate - Event date string
 * @returns Number of days until event (negative if past)
 */
export declare const getDaysUntilEvent: (eventDate: string) => number;
/**
 * Sort events by date (upcoming first, then past events)
 * @param events - Array of events
 * @returns Sorted array of events
 */
export declare const sortEventsByDate: <T extends {
    eventDate: string;
    isActive: boolean;
}>(events: T[]) => T[];
/**
 * Filter events by search query
 * @param events - Array of events
 * @param query - Search query
 * @returns Filtered array of events
 */
export declare const filterEventsBySearch: <T extends {
    title: string;
    description: string;
    code: string;
    location?: string;
    organizer?: string;
    tags?: string[];
}>(events: T[], query: string) => T[];
/**
 * Get unique tags from events
 * @param events - Array of events
 * @returns Array of unique tags
 */
export declare const getUniqueEventTags: <T extends {
    tags?: string[];
}>(events: T[]) => string[];
/**
 * Calculate event statistics
 * @param events - Array of events
 * @returns Event statistics object
 */
export declare const calculateEventStats: <T extends {
    isActive: boolean;
    attendeeCount: number;
    maxAttendees: number;
    eventDate: string;
}>(events: T[]) => {
    total: number;
    active: number;
    inactive: number;
    upcoming: number;
    past: number;
    today: number;
    totalAttendees: number;
    totalCapacity: number;
    averageAttendance: number;
};
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