import { useState, useEffect } from 'react';

function useDebounce(value, delay) {
  const [debouncedValue, setDebouncedValue] = useState(value);

  useEffect(() => {
    // Update debounced value after delay
    const handler = setTimeout(() => {
      setDebouncedValue(value);
    }, delay);

    // Cancel the timeout if value changes (or component unmounts)
    // This is important for preventing debouncedValue from being updated
    // to a stale value if the original value changes rapidly.
    return () => {
      clearTimeout(handler);
    };
  }, [value, delay]); // Only re-call effect if value or delay changes

  return debouncedValue;
}

// Example Usage:
// function SearchInput() {
//   const [searchTerm, setSearchTerm] = useState('');
//   const debouncedSearchTerm = useDebounce(searchTerm, 500); // 500ms delay

//   useEffect(() => {
//     if (debouncedSearchTerm) {
//       console.log('Fetching data for:', debouncedSearchTerm);
//       // In a real app, you would fetch data here
//     }
//   }, [debouncedSearchTerm]);

//   return (
//     <input
//       type="text"
//       placeholder="Search..."
//       value={searchTerm}
//       onChange={(e) => setSearchTerm(e.target.value)}
//     />
//   );
// }