feat(rss): RSS 时间转换为北京时间

- 将 RSS 源中的时间转换为北京时间，保证时区正确。
- 使用 `convertToBeijingTime` 函数进行转换。

src/pages/rss.xml.ts

@@ -1,6 +1,6 @@
 import { getAllPosts } from "@/data/post";
 import { siteConfig } from "@/site.config";
-import { collectionDateSort } from "@/utils/date";
+import { collectionDateSort, convertToBeijingTime } from "@/utils/date";
 import rss from "@astrojs/rss";
 import MarkdownIt from "markdown-it";
 import sanitizeHtml from "sanitize-html";
@@ -25,7 +25,7 @@ export const GET = async () => {
 			return {
 				title: post.data.title,
 				description: (post.data.description ?? "") + "\t" + tagStr,
-				pubDate: post.dateToCmp,
+				pubDate: convertToBeijingTime(post.dateToCmp),
 				link: `posts/${post.id}/`,
 				content: post.body
 					? sanitizeHtml(

src/utils/date.ts

@@ -23,3 +23,18 @@ export function collectionDateSort(a: AllItem, b: AllItem) {
 export function getLatestUpdatedPost(a: AllItem, b: AllItem) {
 	return getDateSortByUpdateTime(b).getTime() - getDateSortByUpdateTime(a).getTime();
 }
+
+export function convertToBeijingTime(date: Date) {
+	const options = {
+		timeZone: "Asia/Shanghai",
+		year: "numeric",
+		month: "2-digit",
+		day: "2-digit",
+		hour: "2-digit",
+		minute: "2-digit",
+		second: "2-digit",
+	};
+	const formatter = new Intl.DateTimeFormat("zh-CN", options as Intl.DateTimeFormatOptions);
+	const formattedDate = formatter.format(date);
+	return formattedDate;
+}