feat: add RSS feed generation and content management features

src/utils/content.config.ts

@@ -0,0 +1,50 @@
+import type { CollectionEntry } from 'astro:content'
+import { getCollection } from 'astro:content'
+import MarkdownIt from 'markdown-it'
+import sanitizeHtml, { type Tag } from 'sanitize-html'
+
+export type Post = CollectionEntry<'posts'>
+
+export async function getPosts(isArchivePage = false) {
+  const posts = await getCollection('posts', ({ data }) => {
+    return import.meta.env.DEV || !data.draft
+  })
+
+  // 按发布日期降序排序
+  return posts.sort((a, b) => b.data.published.valueOf() - a.data.published.valueOf())
+}
+
+// 获取所有标签及其对应的文章
+export async function getPostsByTags() {
+  const posts = await getPosts()
+  const tagMap = new Map<string, Post[]>()
+
+  posts.forEach((post) => {
+    post.data.tags?.forEach((tag) => {
+      if (!tagMap.has(tag)) {
+        tagMap.set(tag, [])
+      }
+      tagMap.get(tag)?.push(post)
+    })
+  })
+
+  return tagMap
+}
+
+// 获取指定标签的所有文章
+export async function getPostsByTag(tag: string) {
+  const posts = await getPosts()
+  return posts.filter(post => post.data.tags?.includes(tag))
+}
+
+// 获取所有标签列表
+export async function getAllTags() {
+  const posts = await getPosts()
+  const tags = new Set<string>()
+
+  posts.forEach((post) => {
+    post.data.tags?.forEach(tag => tags.add(tag))
+  })
+
+  return Array.from(tags)
+}