/** @source wouter example */
import { useState, useEffect } from 'preact/hooks'

// (excluding the leading '#' symbol)
const currentLocation = () => {
	return window.location.hash.replace(/^#/, '') || '/'
}

const navigate = (to: string) => (window.location.hash = to)

export const useHashLocation = () => {
	const [loc, setLoc] = useState(currentLocation())

	useEffect(() => {
		// this function is called whenever the hash changes
		const handler = () => setLoc(currentLocation())

		// subscribe to hash changes
		window.addEventListener('hashchange', handler)

		return () => window.removeEventListener('hashchange', handler)
	}, [])

	return [loc, navigate] as const
}

export const useHashRouterLocation = () => {
	const [location, setLocation] = useHashLocation()

	const locationWithoutQueryString = location.split('?')[0]

	return [locationWithoutQueryString, setLocation] as [
		string,
		(to: string) => void
	]
}