98 lines
3.5 KiB
TypeScript
98 lines
3.5 KiB
TypeScript
import Link from 'next/link';
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import type { Post } from 'contentlayer/generated';
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interface Props {
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current: Post;
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newer?: Post;
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older?: Post;
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}
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interface StationConfig {
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key: 'older' | 'newer';
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label: string;
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post?: Post;
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rel?: 'prev' | 'next';
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subtitle: string;
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align: 'start' | 'end';
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}
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export function PostStorylineNav({ current, newer, older }: Props) {
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const stations: StationConfig[] = [
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{
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key: 'older',
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label: '上一站',
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post: older,
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subtitle: older ? '回顧這篇' : '到達起點',
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rel: 'prev',
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align: 'end'
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},
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{
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key: 'newer',
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label: '下一站',
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post: newer,
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subtitle: newer ? '繼續前往' : '尚無新章',
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rel: 'next',
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align: 'start'
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}
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];
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return (
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<nav aria-label="文章導覽" className="relative mt-10">
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<div className="relative overflow-hidden rounded-[32px] border border-slate-200/70 bg-gradient-to-r from-white via-slate-50 to-white px-6 py-8 shadow-lg dark:border-slate-800/70 dark:from-slate-900 dark:via-slate-900/80 dark:to-slate-900">
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<div className="pointer-events-none absolute inset-x-12 top-1/2 hidden md:block">
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<div className="relative flex items-center text-slate-200 dark:text-slate-700">
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<span className="h-0 w-0 -translate-x-3 border-y-[7px] border-y-transparent border-r-[14px] border-r-current" />
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<span className="flex-1 border-t border-dashed border-current" />
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<span className="h-0 w-0 translate-x-3 rotate-180 border-y-[7px] border-y-transparent border-r-[14px] border-r-current" />
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</div>
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</div>
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<div className="relative grid gap-6 md:grid-cols-[1fr_auto_1fr] md:items-center">
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<Station station={stations[0]} />
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<div className="hidden flex-col items-center gap-2 text-center text-xs uppercase tracking-[0.4em] text-slate-400 md:flex">
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<span className="h-2 w-2 rounded-full bg-blue-500" aria-hidden="true" />
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<span>你在這裡</span>
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</div>
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<Station station={stations[1]} />
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</div>
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</div>
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</nav>
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);
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}
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function Station({ station }: { station: StationConfig }) {
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const { post, label, subtitle, rel, align } = station;
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const alignClass = align === 'end' ? 'items-end text-right' : 'items-start text-left';
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if (!post) {
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return (
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<div className={`flex flex-col gap-1 text-slate-400 ${alignClass}`}>
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<p className="text-[11px] uppercase tracking-[0.4em]">{label}</p>
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<p className="text-base font-semibold">{subtitle}</p>
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</div>
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);
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}
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return (
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<Link
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href={post.url}
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rel={rel}
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className={`group flex flex-col gap-1 text-center transition duration-300 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-400 dark:focus-visible:ring-blue-300 ${alignClass}`}
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>
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<p className="text-[11px] uppercase tracking-[0.4em] text-slate-400 transition group-hover:text-blue-500 dark:text-slate-500">
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{label}
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</p>
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<p className="text-lg font-semibold leading-snug tracking-tight text-slate-900 transition group-hover:text-blue-600 dark:text-slate-50 dark:group-hover:text-blue-300">
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{post.title}
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</p>
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<span className="text-xs text-slate-500 transition group-hover:text-blue-500 dark:text-slate-400">
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{subtitle}
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</span>
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<span
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className={`mt-2 h-0.5 w-16 rounded-full bg-slate-200 transition group-hover:w-24 group-hover:bg-blue-400 dark:bg-slate-700 ${
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align === 'end' ? 'self-end' : 'self-start'
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}`}
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/>
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</Link>
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);
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}
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