import { useCallback, useEffect, useRef } from "react";

/**
 * Custom hook for debouncing function calls
 *
 * @param callback - Function to debounce
 * @param delay - Delay in milliseconds before invoking the callback
 * @returns Debounced version of the callback function
 *
 * @example
 * ```tsx
 * const debouncedSearch = useDebounce((query: string) => {
 *   performSearch(query);
 * }, 300);
 *
 * // Call multiple times, only last call executes after 300ms
 * debouncedSearch("hello");
 * ```
 */
export function useDebounce<T extends (...args: any[]) => void>(callback: T, delay: number): (...args: Parameters<T>) => void {
  const timeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
  const callbackRef = useRef(callback);

  // Keep callback ref up to date
  useEffect(() => {
    callbackRef.current = callback;
  }, [callback]);

  // Clean up timeout on unmount
  useEffect(() => {
    return () => {
      if (timeoutRef.current) {
        clearTimeout(timeoutRef.current);
      }
    };
  }, []);

  return useCallback(
    (...args: Parameters<T>) => {
      if (timeoutRef.current) {
        clearTimeout(timeoutRef.current);
      }
      timeoutRef.current = setTimeout(() => {
        callbackRef.current(...args);
      }, delay);
    },
    [delay],
  );
}