chatbot-template/lib/hooks/use-window-size.ts

'use client'

import { useEffect, useState } from 'react'

export default function useWindowSize() {
  const [windowSize, setWindowSize] = useState<{
    width: number | undefined
    height: number | undefined
  }>({
    width: undefined,
    height: undefined
  })

  useEffect(() => {
    // Handler to call on window resize
    function handleResize() {
      // Set window width/height to state
      setWindowSize({
        width: window.innerWidth,
        height: window.innerHeight
      })
    }

    // Add event listener
    window.addEventListener('resize', handleResize)

    // Call handler right away so state gets updated with initial window size
    handleResize()

    // Remove event listener on cleanup
    return () => window.removeEventListener('resize', handleResize)
  }, []) // Empty array ensures that effect is only run on mount

  return {
    windowSize,
    isMobile: typeof windowSize?.width === 'number' && windowSize?.width < 768,
    isDesktop: typeof windowSize?.width === 'number' && windowSize?.width >= 768
  }
}