368 lines
12 KiB
JavaScript

import { Fragment, useEffect, useRef } from 'react'
import Image from 'next/image'
import Link from 'next/link'
import { useRouter } from 'next/router'
import { Popover, Transition } from '@headlessui/react'
import clsx from 'clsx'
import { Container } from '@/components/Container'
import avatarImage from '@/images/avatar.jpg'
import { ChevronDownIcon, CloseIcon, MoonIcon, SunIcon } from '@/components/SVGIcons'
function MobileNavItem({ href, children }) {
return (
<li>
<Popover.Button as={Link} href={href} className="block py-2">
{children}
</Popover.Button>
</li>
)
}
function MobileNavigation(props) {
return (
<Popover {...props}>
<Popover.Button className="group flex items-center rounded-full bg-white/90 px-4 py-2 text-sm font-medium text-zinc-800 shadow-lg shadow-zinc-800/5 ring-1 ring-zinc-900/5 backdrop-blur dark:bg-zinc-800/90 dark:text-zinc-200 dark:ring-white/10 dark:hover:ring-white/20">
Menu
<ChevronDownIcon className="ml-3 h-auto w-2 stroke-zinc-500 group-hover:stroke-zinc-700 dark:group-hover:stroke-zinc-400" />
</Popover.Button>
<Transition.Root>
<Transition.Child
as={Fragment}
enter="duration-150 ease-out"
enterFrom="opacity-0"
enterTo="opacity-100"
leave="duration-150 ease-in"
leaveFrom="opacity-100"
leaveTo="opacity-0"
>
<Popover.Overlay className="fixed inset-0 z-50 bg-zinc-800/40 backdrop-blur-sm dark:bg-black/80" />
</Transition.Child>
<Transition.Child
as={Fragment}
enter="duration-150 ease-out"
enterFrom="opacity-0 scale-95"
enterTo="opacity-100 scale-100"
leave="duration-150 ease-in"
leaveFrom="opacity-100 scale-100"
leaveTo="opacity-0 scale-95"
>
<Popover.Panel
focus
className="fixed inset-x-4 top-8 z-50 origin-top rounded-3xl bg-white p-8 ring-1 ring-zinc-900/5 dark:bg-zinc-900 dark:ring-zinc-800"
>
<div className="flex flex-row-reverse items-center justify-between">
<Popover.Button aria-label="Close menu" className="-m-1 p-1">
<CloseIcon className="h-6 w-6 text-zinc-500 dark:text-zinc-400" />
</Popover.Button>
<h2 className="text-sm font-medium text-zinc-600 dark:text-zinc-400">
Navigation
</h2>
</div>
<nav className="mt-6">
<ul className="-my-2 divide-y divide-zinc-100 text-base text-zinc-800 dark:divide-zinc-100/5 dark:text-zinc-300">
<MobileNavItem href="/about">About</MobileNavItem>
<MobileNavItem href="/articles">Articles</MobileNavItem>
<MobileNavItem href="/projects">Projects</MobileNavItem>
<MobileNavItem href="/speaking">Speaking</MobileNavItem>
<MobileNavItem href="/uses">Uses</MobileNavItem>
</ul>
</nav>
</Popover.Panel>
</Transition.Child>
</Transition.Root>
</Popover>
)
}
function NavItem({ href, children }) {
let isActive = useRouter().pathname === href
return (
<li>
<Link
href={href}
className={clsx(
'relative block px-3 py-2 transition',
isActive
? 'text-teal-500 dark:text-teal-400'
: 'hover:text-teal-500 dark:hover:text-teal-400'
)}
>
{children}
{isActive && (
<span className="absolute inset-x-1 -bottom-px h-px bg-gradient-to-r from-teal-500/0 via-teal-500/40 to-teal-500/0 dark:from-teal-400/0 dark:via-teal-400/40 dark:to-teal-400/0" />
)}
</Link>
</li>
)
}
function DesktopNavigation(props) {
return (
<nav {...props}>
<ul className="flex rounded-full bg-white/90 px-3 text-sm font-medium text-zinc-800 shadow-lg shadow-zinc-800/5 ring-1 ring-zinc-900/5 backdrop-blur dark:bg-zinc-800/90 dark:text-zinc-200 dark:ring-white/10">
<NavItem href="/about">About</NavItem>
<NavItem href="/articles">Articles</NavItem>
<NavItem href="/projects">Projects</NavItem>
<NavItem href="/speaking">Speaking</NavItem>
<NavItem href="/uses">Uses</NavItem>
</ul>
</nav>
)
}
function ModeToggle() {
function disableTransitionsTemporarily() {
document.documentElement.classList.add('[&_*]:!transition-none')
window.setTimeout(() => {
document.documentElement.classList.remove('[&_*]:!transition-none')
}, 0)
}
function toggleMode() {
disableTransitionsTemporarily()
let darkModeMediaQuery = window.matchMedia('(prefers-color-scheme: dark)')
let isSystemDarkMode = darkModeMediaQuery.matches
let isDarkMode = document.documentElement.classList.toggle('dark')
if (isDarkMode === isSystemDarkMode) {
delete window.localStorage.isDarkMode
} else {
window.localStorage.isDarkMode = isDarkMode
}
}
return (
<button
type="button"
aria-label="Toggle dark mode"
className="group rounded-full bg-white/90 px-3 py-2 shadow-lg shadow-zinc-800/5 ring-1 ring-zinc-900/5 backdrop-blur transition dark:bg-zinc-800/90 dark:ring-white/10 dark:hover:ring-white/20"
onClick={toggleMode}
>
<SunIcon className="h-6 w-6 fill-zinc-100 stroke-zinc-500 transition group-hover:fill-zinc-200 group-hover:stroke-zinc-700 dark:hidden [@media(prefers-color-scheme:dark)]:fill-teal-50 [@media(prefers-color-scheme:dark)]:stroke-teal-500 [@media(prefers-color-scheme:dark)]:group-hover:fill-teal-50 [@media(prefers-color-scheme:dark)]:group-hover:stroke-teal-600" />
<MoonIcon className="hidden h-6 w-6 fill-zinc-700 stroke-zinc-500 transition dark:block [@media(prefers-color-scheme:dark)]:group-hover:stroke-zinc-400 [@media_not_(prefers-color-scheme:dark)]:fill-teal-400/10 [@media_not_(prefers-color-scheme:dark)]:stroke-teal-500" />
</button>
)
}
function clamp(number, a, b) {
let min = Math.min(a, b)
let max = Math.max(a, b)
return Math.min(Math.max(number, min), max)
}
function AvatarContainer({ className, ...props }) {
return (
<div
className={clsx(
className,
'h-10 w-10 rounded-full bg-white/90 p-0.5 shadow-lg shadow-zinc-800/5 ring-1 ring-zinc-900/5 backdrop-blur dark:bg-zinc-800/90 dark:ring-white/10'
)}
{...props}
/>
)
}
function Avatar({ large = false, className, ...props }) {
return (
<Link
href="/"
aria-label="Home"
className={clsx(className, 'pointer-events-auto')}
{...props}
>
<Image
src={avatarImage}
alt=""
sizes={large ? '4rem' : '2.25rem'}
className={clsx(
'rounded-full bg-zinc-100 object-cover dark:bg-zinc-800',
large ? 'h-16 w-16' : 'h-9 w-9'
)}
priority
/>
</Link>
)
}
export function Header() {
let isHomePage = useRouter().pathname === '/'
let headerRef = useRef()
let avatarRef = useRef()
let isInitial = useRef(true)
useEffect(() => {
let downDelay = avatarRef.current?.offsetTop ?? 0
let upDelay = 64
function setProperty(property, value) {
document.documentElement.style.setProperty(property, value)
}
function removeProperty(property) {
document.documentElement.style.removeProperty(property)
}
function updateHeaderStyles() {
let { top, height } = headerRef.current.getBoundingClientRect()
let scrollY = clamp(
window.scrollY,
0,
document.body.scrollHeight - window.innerHeight
)
if (isInitial.current) {
setProperty('--header-position', 'sticky')
}
setProperty('--content-offset', `${downDelay}px`)
if (isInitial.current || scrollY < downDelay) {
setProperty('--header-height', `${downDelay + height}px`)
setProperty('--header-mb', `${-downDelay}px`)
} else if (top + height < -upDelay) {
let offset = Math.max(height, scrollY - upDelay)
setProperty('--header-height', `${offset}px`)
setProperty('--header-mb', `${height - offset}px`)
} else if (top === 0) {
setProperty('--header-height', `${scrollY + height}px`)
setProperty('--header-mb', `${-scrollY}px`)
}
if (top === 0 && scrollY > 0 && scrollY >= downDelay) {
setProperty('--header-inner-position', 'fixed')
removeProperty('--header-top')
removeProperty('--avatar-top')
} else {
removeProperty('--header-inner-position')
setProperty('--header-top', '0px')
setProperty('--avatar-top', '0px')
}
}
function updateAvatarStyles() {
if (!isHomePage) {
return
}
let fromScale = 1
let toScale = 36 / 64
let fromX = 0
let toX = 2 / 16
let scrollY = downDelay - window.scrollY
let scale = (scrollY * (fromScale - toScale)) / downDelay + toScale
scale = clamp(scale, fromScale, toScale)
let x = (scrollY * (fromX - toX)) / downDelay + toX
x = clamp(x, fromX, toX)
setProperty(
'--avatar-image-transform',
`translate3d(${x}rem, 0, 0) scale(${scale})`
)
let borderScale = 1 / (toScale / scale)
let borderX = (-toX + x) * borderScale
let borderTransform = `translate3d(${borderX}rem, 0, 0) scale(${borderScale})`
setProperty('--avatar-border-transform', borderTransform)
setProperty('--avatar-border-opacity', scale === toScale ? 1 : 0)
}
function updateStyles() {
updateHeaderStyles()
updateAvatarStyles()
isInitial.current = false
}
updateStyles()
window.addEventListener('scroll', updateStyles, { passive: true })
window.addEventListener('resize', updateStyles)
return () => {
window.removeEventListener('scroll', updateStyles)
window.removeEventListener('resize', updateStyles)
}
}, [isHomePage])
return (
<>
<header
className="pointer-events-none relative z-50 flex flex-col"
style={{
height: 'var(--header-height)',
marginBottom: 'var(--header-mb)',
}}
>
{isHomePage && (
<>
<div
ref={avatarRef}
className="order-last mt-[calc(theme(spacing.16)-theme(spacing.3))]"
/>
<Container
className="top-0 order-last -mb-3 pt-3"
style={{ position: 'var(--header-position)' }}
>
<div
className="top-[var(--avatar-top,theme(spacing.3))] w-full"
style={{ position: 'var(--header-inner-position)' }}
>
<div className="relative">
<AvatarContainer
className="absolute left-0 top-3 origin-left transition-opacity"
style={{
opacity: 'var(--avatar-border-opacity, 0)',
transform: 'var(--avatar-border-transform)',
}}
/>
<Avatar
large
className="block h-16 w-16 origin-left"
style={{ transform: 'var(--avatar-image-transform)' }}
/>
</div>
</div>
</Container>
</>
)}
<div
ref={headerRef}
className="top-0 z-10 h-16 pt-6"
style={{ position: 'var(--header-position)' }}
>
<Container
className="top-[var(--header-top,theme(spacing.6))] w-full"
style={{ position: 'var(--header-inner-position)' }}
>
<div className="relative flex gap-4">
<div className="flex flex-1">
{!isHomePage && (
<AvatarContainer>
<Avatar />
</AvatarContainer>
)}
</div>
<div className="flex flex-1 justify-end md:justify-center">
<MobileNavigation className="pointer-events-auto md:hidden" />
<DesktopNavigation className="pointer-events-auto hidden md:block" />
</div>
<div className="flex justify-end md:flex-1">
<div className="pointer-events-auto">
<ModeToggle />
</div>
</div>
</div>
</Container>
</div>
</header>
{isHomePage && <div style={{ height: 'var(--content-offset)' }} />}
</>
)
}