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import { useCallback, useEffect, useRef, useState } from 'react'
import Collapse from '@/components/Collapse'
import { MenuBarMobile } from './MenuBarMobile'
import throttle from 'lodash.throttle'
import SearchInput from './SearchInput'
import DarkModeButton from '@/components/DarkModeButton'
import LogoBar from './LogoBar'
/**
* 顶部导航栏 + 菜单
* @param {} param0
* @returns
*/
export default function TopNavBar(props) {
const { className } = props
const [isOpen, changeShow] = useState(false)
const collapseRef = useRef(null)
let windowTop = 0
// 监听滚动
useEffect(() => {
scrollTrigger()
window.addEventListener('scroll', scrollTrigger)
return () => {
window.removeEventListener('scroll', scrollTrigger)
}
}, [])
const throttleMs = 200
const scrollTrigger = useCallback(throttle(() => {
const scrollS = window.scrollY
const nav = document.querySelector('#nav-bg')
// const header = document.querySelector('#top-nav')
const header = document.querySelector('#container-inner')
const showNav = scrollS <= windowTop || scrollS < 5 || (scrollS <= header.clientHeight)// 非首页无大图时影藏顶部 滚动条置顶时隐藏
if (!showNav) {
nav && nav.classList.replace('-top-20', 'top-0')
windowTop = scrollS
} else {
nav && nav.classList.replace('top-0', '-top-20')
windowTop = scrollS
}
}, throttleMs)
)
const toggleMenuOpen = () => {
changeShow(!isOpen)
}
return (
<div id='top-nav' className={'fixed top-0 w-full z-40 bg-white dark:bg-neutral-900 shadow bg-opacity-70 dark:bg-opacity-60 backdrop-filter backdrop-blur-lg md:shadow-none pb-2 md:pb-0 ' + className}>
{/* 图标Logo */}
<div className='fixed block md:hidden top-0 left-5 md:left-4 z-40 pt-3 md:pt-4'>
<LogoBar {...props} />
</div>
{/* 移动端折叠菜单 */}
<Collapse type='vertical' collapseRef={collapseRef} isOpen={isOpen} className='md:hidden mt-16'>
<div className='pt-1 py-3 lg:hidden '>
<MenuBarMobile {...props} onHeightChange={(param) => collapseRef.current?.updateCollapseHeight(param)} />
</div>
</Collapse>
{/* 导航栏菜单 */}
<div className='h-18 px-5'>
<div className='absolute top-0 right-5'>
{/* 搜索框、折叠按钮、仅移动端显示 */}
<div className='pt-1 flex md:hidden justify-end items-center space-x-3 font-serif dark:text-gray-200 '>
<div className='relative md:hidden top-0 right-0'>
<SearchInput className='my-3 rounded-full' />
</div>
<DarkModeButton className='flex text-md items-center h-full' />
<div onClick={toggleMenuOpen} className='w-4 text-center cursor-pointer text-lg hover:scale-110 duration-150'>
{isOpen ? <i className='fas fa-times' /> : <i className="fa-solid fa-ellipsis-vertical"/>}
</div>
</div>
{/* 桌面端顶部菜单 */}
<div className='hidden md:flex'>
{/* {links && links?.map((link, index) => <MenuItemDrop key={index} link={link} />)} */}
<SearchInput className='my-3 rounded-full' />
<DarkModeButton className='my-5 mr-6 text-sm flex items-center h-full pt-px' />
</div>
</div>
</div>
</div>
)
}
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