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import { useGlobal } from '@/lib/global'
import { useCallback, useEffect, useRef, useState } from 'react'
import throttle from 'lodash.throttle'
import { BlogItem } from './BlogItem'
import { siteConfig } from '@/lib/config'
/**
* 滚动博客列表
* @param {*} props
* @returns
*/
export default function BlogListScroll (props) {
const { posts } = props
const { locale } = useGlobal()
const [page, updatePage] = useState(1)
let hasMore = false
const postsToShow = posts
? Object.assign(posts).slice(0, parseInt(siteConfig('POSTS_PER_PAGE')) * page)
: []
if (posts) {
const totalCount = posts.length
hasMore = page * parseInt(siteConfig('POSTS_PER_PAGE')) < totalCount
}
const handleGetMore = () => {
if (!hasMore) return
updatePage(page + 1)
}
const targetRef = useRef(null)
// 监听滚动自动分页加载
const scrollTrigger = useCallback(throttle(() => {
const scrollS = window.scrollY + window.outerHeight
const clientHeight = targetRef ? (targetRef.current ? (targetRef.current.clientHeight) : 0) : 0
if (scrollS > clientHeight + 100) {
handleGetMore()
}
}, 500))
useEffect(() => {
window.addEventListener('scroll', scrollTrigger)
return () => {
window.removeEventListener('scroll', scrollTrigger)
}
})
return (
<div id="posts-wrapper" className="w-full md:pr-8 mb-12" ref={targetRef}>
{postsToShow.map(p => (
<BlogItem key={p.id} post={p}/>
))}
<div onClick={handleGetMore}
className="w-full my-4 py-4 text-center cursor-pointer ">
{' '}
{hasMore ? locale.COMMON.MORE : `${locale.COMMON.NO_MORE} 😰`}{' '}
</div>
</div>
)
}
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