add the search function to website

pages/api/search/[keyword].ts

@@ -0,0 +1,20 @@
+import { SearchIndex } from "@/lib/search";
+import { isEmptyString } from "@/lib/utils";
+import { TSearchResultItem } from "@/types/search-result";
+import type { NextApiRequest, NextApiResponse } from "next";
+
+type ResponseData = TSearchResultItem[];
+
+export default function handler(req: NextApiRequest, res: NextApiResponse<ResponseData>) {
+  const searchText = req.query.keyword as string;
+  if (isEmptyString(searchText)) {
+    res.status(200).json([]);
+    return;
+  }
+  const result: TSearchResultItem[] = SearchIndex.search(searchText).map((item) => ({
+    id: item.id,
+    title: item.title,
+    tags: item.tags,
+  }));
+  res.status(200).json(result);
+}