import { useCallback } from 'react';

export function useInitials() {
    return useCallback((fullName?: string | null): string => {
        if (!fullName) {
            return '';
        }

        const names = fullName
            .trim()
            .split(/\s+/u)
            .filter((segment) => segment.length > 0);

        if (names.length === 0) return '';
        if (names.length === 1) return names[0].charAt(0).toUpperCase();

        const firstInitial = names[0].charAt(0);
        const lastInitial = names[names.length - 1].charAt(0);

        return `${firstInitial}${lastInitial}`.toUpperCase();
    }, []);
}