gitbook 主题框架

themes/gitbook/components/BlogPostListScroll.js

@@ -0,0 +1,106 @@
+import BLOG from '@/blog.config'
+import BlogPostCard from './BlogPostCard'
+import BlogPostListEmpty from './BlogPostListEmpty'
+import { useGlobal } from '@/lib/global'
+import throttle from 'lodash.throttle'
+import React, { useCallback, useEffect, useRef, useState } from 'react'
+import { useRouter } from 'next/router'
+
+/**
+ * 博客列表滚动分页
+ * @param posts 所有文章
+ * @param tags 所有标签
+ * @returns {JSX.Element}
+ * @constructor
+ */
+const BlogPostListScroll = ({ posts = [], currentSearch }) => {
+  const postsPerPage = BLOG.POSTS_PER_PAGE
+  const [page, updatePage] = useState(1)
+  let filteredPosts = Object.assign(posts)
+  const searchKey = getSearchKey()
+  if (searchKey) {
+    filteredPosts = posts.filter(post => {
+      const tagContent = post.tags ? post.tags.join(' ') : ''
+      const searchContent = post.title + post.summary + tagContent
+      return searchContent.toLowerCase().includes(searchKey.toLowerCase())
+    })
+  }
+  const postsToShow = getPostByPage(page, filteredPosts, postsPerPage)
+
+  let hasMore = false
+  if (filteredPosts) {
+    const totalCount = filteredPosts.length
+    hasMore = page * postsPerPage < totalCount
+  }
+
+  const handleGetMore = () => {
+    if (!hasMore) return
+    updatePage(page + 1)
+  }
+
+  // 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))
+
+  // 监听滚动
+  useEffect(() => {
+    window.addEventListener('scroll', scrollTrigger)
+    return () => {
+      window.removeEventListener('scroll', scrollTrigger)
+    }
+  })
+
+  const targetRef = useRef(null)
+  const { locale } = useGlobal()
+
+  if (!postsToShow || postsToShow.length === 0) {
+    return <BlogPostListEmpty currentSearch={currentSearch} />
+  } else {
+    return <div id='container' ref={targetRef} className='w-full'>
+
+      {/* 文章列表 */}
+      <div className='space-y-1 lg:space-y-4'>
+        {postsToShow?.map(post => (
+          <BlogPostCard key={post.id} post={post} showSummary={true} />
+        ))}
+      </div>
+
+      <div>
+        <div onClick={() => {
+          handleGetMore()
+        }}
+          className='w-full my-4 py-4 text-center cursor-pointer dark:text-gray-200'
+        > {hasMore ? locale.COMMON.MORE : `${locale.COMMON.NO_MORE} 😰`} </div>
+      </div>
+    </div>
+  }
+}
+
+/**
+ * 获取从第1页到指定页码的文章
+ * @param page 第几页
+ * @param totalPosts 所有文章
+ * @param postsPerPage 每页文章数量
+ * @returns {*}
+ */
+const getPostByPage = function (page, totalPosts, postsPerPage) {
+  return totalPosts.slice(
+    0,
+    postsPerPage * page
+  )
+}
+
+function getSearchKey() {
+  const router = useRouter()
+  if (router.query && router.query.s) {
+    return router.query.s
+  }
+  return null
+}
+
+export default BlogPostListScroll