202 lines
7.2 KiB
TypeScript
202 lines
7.2 KiB
TypeScript
'use client';
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import { useEffect, useMemo, useState } from 'react';
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import { Post, Page } from 'contentlayer2/generated';
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import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
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import {
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faArrowDownWideShort,
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faArrowUpWideShort,
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faMagnifyingGlass,
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faListUl
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} from '@fortawesome/free-solid-svg-icons';
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import { siteConfig } from '@/lib/config';
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import { PostListItem } from './post-list-item';
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import { TimelineWrapper } from './timeline-wrapper';
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interface Props {
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posts: Post[];
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pageSize?: number;
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}
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type SortOrder = 'new' | 'old';
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export function PostListWithControls({ posts, pageSize }: Props) {
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const [sortOrder, setSortOrder] = useState<SortOrder>('new');
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const [page, setPage] = useState(1);
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const [searchTerm, setSearchTerm] = useState('');
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const size = pageSize ?? siteConfig.postsPerPage ?? 5;
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const normalizedQuery = searchTerm.trim().toLowerCase();
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const filteredPosts = useMemo(() => {
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if (!normalizedQuery) return posts;
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return posts.filter((post) => {
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const haystack = [
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post.title,
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post.description,
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post.custom_excerpt,
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post.tags?.join(' ')
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]
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.filter(Boolean)
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.join(' ')
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.toLowerCase();
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return haystack.includes(normalizedQuery);
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});
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}, [posts, normalizedQuery]);
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const sortedPosts = useMemo(() => {
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const arr = [...filteredPosts];
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arr.sort((a, b) => {
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const aDate = a.published_at
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? new Date(a.published_at).getTime()
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: 0;
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const bDate = b.published_at
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? new Date(b.published_at).getTime()
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: 0;
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return sortOrder === 'new' ? bDate - aDate : aDate - bDate;
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});
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return arr;
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}, [filteredPosts, sortOrder]);
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const totalPages = Math.max(1, Math.ceil(sortedPosts.length / size));
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const currentPage = Math.min(page, totalPages);
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const start = (currentPage - 1) * size;
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const currentPosts = sortedPosts.slice(start, start + size);
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useEffect(() => {
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setPage(1);
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}, [normalizedQuery]);
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const handleChangeSort = (order: SortOrder) => {
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setSortOrder(order);
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setPage(1);
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};
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const goToPage = (p: number) => {
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if (p < 1 || p > totalPages) return;
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setPage(p);
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};
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return (
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<div className="space-y-4">
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<div className="flex flex-col gap-4 text-xs text-slate-500 dark:text-slate-400 sm:flex-row sm:items-center sm:justify-between">
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<div className="inline-flex items-center gap-2 rounded-full bg-slate-100/70 px-2 py-1 text-slate-600 dark:bg-slate-800/70 dark:text-slate-300">
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<FontAwesomeIcon icon={faListUl} className="h-3.5 w-3.5" />
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<span>排序</span>
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<button
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type="button"
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onClick={() => handleChangeSort('new')}
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className={`inline-flex items-center gap-1 rounded-full px-2 py-0.5 transition duration-180 ease-snappy ${sortOrder === 'new'
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? 'bg-blue-600 text-white dark:bg-blue-500'
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: 'bg-white text-slate-600 hover:bg-slate-200 dark:bg-slate-900 dark:text-slate-300 dark:hover:bg-slate-700'
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}`}
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>
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<FontAwesomeIcon icon={faArrowDownWideShort} className="h-3 w-3" />
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新到舊
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</button>
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<button
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type="button"
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onClick={() => handleChangeSort('old')}
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className={`inline-flex items-center gap-1 rounded-full px-2 py-0.5 transition duration-180 ease-snappy ${sortOrder === 'old'
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? 'bg-blue-600 text-white dark:bg-blue-500'
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: 'bg-white text-slate-600 hover:bg-slate-200 dark:bg-slate-900 dark:text-slate-300 dark:hover:bg-slate-700'
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}`}
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>
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<FontAwesomeIcon icon={faArrowUpWideShort} className="h-3 w-3" />
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舊到新
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</button>
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</div>
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<div className="flex w-full items-center text-sm sm:w-auto">
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<label htmlFor="post-search" className="sr-only">
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搜尋文章
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</label>
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<div className="relative w-full sm:w-64">
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<FontAwesomeIcon
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icon={faMagnifyingGlass}
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className="pointer-events-none absolute left-3 top-1/2 h-3.5 w-3.5 -translate-y-1/2 text-slate-400"
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/>
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<input
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id="post-search"
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type="search"
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placeholder="標題、標籤、摘要關鍵字"
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value={searchTerm}
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onChange={(event) => setSearchTerm(event.target.value)}
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className="w-full rounded-full border border-slate-200 bg-white py-1.5 pl-9 pr-3 text-sm text-slate-700 shadow-sm transition duration-180 ease-snappy focus:border-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-200 dark:border-slate-700 dark:bg-slate-900 dark:text-slate-100 dark:focus:ring-blue-500"
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/>
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</div>
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</div>
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</div>
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<div className="flex items-center justify-between text-xs text-slate-500 dark:text-slate-400">
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<p>
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第 {currentPage} / {totalPages} 頁 · 共 {sortedPosts.length} 篇
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{normalizedQuery && `（搜尋「${searchTerm}」）`}
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</p>
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{normalizedQuery && sortedPosts.length === 0 && (
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<button
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type="button"
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onClick={() => setSearchTerm('')}
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className="text-blue-600 underline-offset-2 hover:underline dark:text-blue-400"
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>
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清除搜尋
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</button>
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)}
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</div>
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{currentPosts.length === 0 ? (
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<div className="rounded-lg border border-dashed border-slate-200 p-6 text-center text-sm text-slate-500 dark:border-slate-700 dark:text-slate-400">
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找不到符合關鍵字的文章，換個詞再試試？
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</div>
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) : (
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<TimelineWrapper className="space-y-3">
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{currentPosts.map((post) => (
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<PostListItem key={post._id} post={post} />
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))}
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</TimelineWrapper>
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)}
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{totalPages > 1 && currentPosts.length > 0 && (
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<nav className="flex items-center justify-center gap-3 text-xs text-slate-600 dark:text-slate-300">
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<button
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type="button"
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onClick={() => goToPage(currentPage - 1)}
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disabled={currentPage === 1}
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className="rounded border border-slate-200 px-2 py-1 disabled:opacity-40 dark:border-slate-700"
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>
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上一頁
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</button>
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<div className="flex items-center gap-1">
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{Array.from({ length: totalPages }).map((_, i) => {
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const p = i + 1;
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const isActive = p === currentPage;
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return (
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<button
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key={p}
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type="button"
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onClick={() => goToPage(p)}
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className={`h-7 w-7 rounded text-xs ${isActive
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? 'bg-blue-600 text-white dark:bg-blue-500'
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: 'hover:bg-slate-100 dark:hover:bg-slate-800'
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}`}
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>
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{p}
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</button>
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);
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})}
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</div>
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<button
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type="button"
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onClick={() => goToPage(currentPage + 1)}
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disabled={currentPage === totalPages}
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className="rounded border border-slate-200 px-2 py-1 disabled:opacity-40 dark:border-slate-700"
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>
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下一頁
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</button>
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</nav>
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)}
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</div>
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);
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}
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