From f34b0cb46b9748c5996d3cdf1b8a65febefc113c Mon Sep 17 00:00:00 2001
From: radishzzz <shuyinsen@gmail.com>
Date: Mon, 17 Mar 2025 02:49:02 +0000
Subject: [PATCH] feat:  i18n rss url and different excerpt length for
 different languages

---
 src/components/Footer.astro     | 17 +++++++++++--
 src/components/PostList.astro   |  2 +-
 src/config.ts                   |  6 ++---
 src/pages/[...posts_slug].astro |  2 +-
 src/pages/og/[...image].ts      |  5 ++--
 src/utils/description.ts        | 43 ++++++++++++++++++++++++++++++---
 6 files changed, 62 insertions(+), 13 deletions(-)

diff --git a/src/components/Footer.astro b/src/components/Footer.astro
index 31fa013..7537859 100644
--- a/src/components/Footer.astro
+++ b/src/components/Footer.astro
@@ -1,7 +1,8 @@
 ---
 import LanguageSwitcher from '@/components/Widgets/LanguageSwitcher.astro'
 import ThemeToggle from '@/components/Widgets/ThemeToggle.astro'
-import themeConfig from '@/config'
+import { defaultLocale, themeConfig } from '@/config'
+import { getLangFromPath } from '@/i18n/lang'
 
 interface Props {
   class?: string
@@ -10,7 +11,19 @@ interface Props {
 
 const { class: className, supportedLangs = [] } = Astro.props
 const { author } = themeConfig.site
-const { links, startYear } = themeConfig.footer
+const { links: configLinks, startYear } = themeConfig.footer
+
+// i18n rss path
+const currentLang = getLangFromPath(Astro.url.pathname)
+const links = configLinks.map((link) => {
+  if (link.name === 'RSS') {
+    return {
+      ...link,
+      url: currentLang === defaultLocale ? link.url : `/${currentLang}${link.url}/`,
+    }
+  }
+  return link
+})
 
 const currentYear = new Date().getFullYear()
 const year = Number(startYear) === currentYear
diff --git a/src/components/PostList.astro b/src/components/PostList.astro
index 8192113..00ba3ab 100644
--- a/src/components/PostList.astro
+++ b/src/components/PostList.astro
@@ -68,7 +68,7 @@ function getPostPath(post: Post) {
         class="heti hidden"
         lg="mt-2 block"
       >
-        <p>{generateDescription(post)}</p>
+        <p>{generateDescription(post, 'list')}</p>
       </div>
 
     </li>
diff --git a/src/config.ts b/src/config.ts
index 6cb5a03..c911129 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -4,13 +4,13 @@ export const themeConfig: ThemeConfig = {
   // SITE INFORMATION >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> START
   site: {
     // site title
-    title: 'Retypeset',
+    title: '重新编排',
     // site subtitle
-    subtitle: 'Revive the beauty of typography',
+    subtitle: '再现版式之美',
     // use i18n title/subtitle from src/i18n/ui.ts instead of static ones above
     i18nTitle: true,
     // site description
-    description: 'Retypeset is a static blog theme based on the Astro framework, inspired by Typography. Retypeset establishes a new visual standard and reimagines the layout of all pages, offering a reading experience similar to paper books, reviving the beauty of typography. Details in every sight, elegance in every space.',
+    description: 'Retypeset 是一款基于Astro框架的静态博客主题，设计灵感来自Typography。本主题通过建立全新的视觉规范，对所有页面进行重新编排，打造纸质书页般的阅读体验，再现版式之美。所见皆为细节，方寸尽显优雅。',
     // author name
     author: 'radishzz',
     // site url
diff --git a/src/pages/[...posts_slug].astro b/src/pages/[...posts_slug].astro
index c5ea420..8e4a2d9 100644
--- a/src/pages/[...posts_slug].astro
+++ b/src/pages/[...posts_slug].astro
@@ -98,7 +98,7 @@ export async function getStaticPaths() {
 }
 
 const { post, lang, supportedLangs } = Astro.props
-const description = generateDescription(post)
+const description = generateDescription(post, 'meta')
 const { Content, remarkPluginFrontmatter } = await post.render()
 
 // 构建标签链接
diff --git a/src/pages/og/[...image].ts b/src/pages/og/[...image].ts
index 7533957..a4e9f71 100644
--- a/src/pages/og/[...image].ts
+++ b/src/pages/og/[...image].ts
@@ -1,3 +1,4 @@
+import type { CollectionEntry } from 'astro:content'
 import { generateDescription } from '@/utils/description'
 import { OGImageRoute } from 'astro-og-canvas'
 import { getCollection } from 'astro:content'
@@ -7,11 +8,11 @@ const blogEntries = await getCollection('posts')
 
 // Convert to page data objects
 const pages = Object.fromEntries(
-  blogEntries.map(post => [
+  blogEntries.map((post: CollectionEntry<'posts'>) => [
     post.slug,
     {
       title: post.data.title,
-      description: post.data.description || generateDescription(post),
+      description: post.data.description || generateDescription(post, 'og'),
     },
   ]),
 )
diff --git a/src/utils/description.ts b/src/utils/description.ts
index eacad0c..92962b3 100644
--- a/src/utils/description.ts
+++ b/src/utils/description.ts
@@ -1,14 +1,46 @@
 import type { CollectionEntry } from 'astro:content'
+import { defaultLocale } from '@/config'
 import MarkdownIt from 'markdown-it'
 import sanitizeHtml from 'sanitize-html'
 
 const parser = new MarkdownIt()
 
+type ExcerptScene = 'list' | 'meta' | 'og'
+
+// Excerpt length in different scenarios
+const EXCERPT_LENGTHS: Record<ExcerptScene, {
+  cjk: number
+  other: number
+}> = {
+  list: {
+    cjk: 120,
+    other: 240,
+  },
+  meta: {
+    cjk: 120,
+    other: 240,
+  },
+  og: {
+    cjk: 75,
+    other: 150,
+  },
+}
+
+const isCJKLang = (lang: string) => ['zh', 'zh-tw', 'ja'].includes(lang)
+
 // Generate an excerpt from Markdown content
-export function generateExcerpt(content: string, length: number = 98): string {
+export function generateExcerpt(
+  content: string,
+  scene: ExcerptScene,
+  lang: string,
+): string {
   if (!content)
     return ''
 
+  const length = isCJKLang(lang)
+    ? EXCERPT_LENGTHS[scene].cjk
+    : EXCERPT_LENGTHS[scene].other
+
   // Convert Markdown to plain text
   const plainText = sanitizeHtml(parser.render(content), {
     allowedTags: [],
@@ -23,11 +55,14 @@ export function generateExcerpt(content: string, length: number = 98): string {
 }
 
 // Automatically generate a description for the article
-export function generateDescription(post: CollectionEntry<'posts'>): string {
+export function generateDescription(
+  post: CollectionEntry<'posts'>,
+  scene: ExcerptScene,
+): string {
   // If the article already has a description, return it directly
   if (post.data.description)
     return post.data.description
 
-  // Otherwise, generate an excerpt from the article content as the description
-  return generateExcerpt(post.body)
+  const lang = post.data.lang ?? defaultLocale
+  return generateExcerpt(post.body, scene, lang)
 }