Fix to return correct data

src/app/blog/[id]/page.tsx

@@ -7,6 +7,10 @@ export async function generateMetadata({ params }: { params: BlogInfo }): Promis
   return { title };
 }
 
+export async function generateStaticParams(): Promise<BlogInfos> {
+  return getAllBlogInfos();
+}
+
 export default async function Page({ params }: { params?: BlogInfo }) {
   if (params == null) {
     throw new Error("invalid params");

src/app/blog/page.tsx

@@ -1,9 +1,5 @@
-import { BlogInfos, getAllBlogInfos, getSortedBlogMetadata } from "../lib/blog-fetch";
 import { Blog } from "./blog";
-
-export async function generateStaticParams(): Promise<BlogInfos> {
-  return getAllBlogInfos();
-}
+import { getSortedBlogMetadata } from "../lib/blog-fetch";
 
 export default async function Page() {
   const blogs = await getSortedBlogMetadata();

src/app/lib/blog-fetch.ts

@@ -86,7 +86,7 @@ export type BlogInfo = {
   id: string;
 };
 
-export type BlogInfos = { params: BlogInfo }[];
+export type BlogInfos = BlogInfo[];
 
 const markdownPattern = /\.md$/;
 
@@ -100,11 +100,7 @@ export async function getAllBlogInfos(): Promise<BlogInfos> {
   console.log(`Reading all blog infos from ${postsDirectory}`);
   const fileNames = await readdir(postsDirectory);
 
-  return Promise.all(
-    fileNames.map(async (fileName: string) => ({
-      params: await blogInfoFromFileName(fileName),
-    })),
-  );
+  return Promise.all(fileNames.map((fileName: string) => blogInfoFromFileName(fileName)));
 }
 
 export async function getBlogFromId(id: string): Promise<Blog> {
@@ -120,12 +116,12 @@ export async function getBlogFromId(id: string): Promise<Blog> {
   }
 
   const blogInfos = await getAllBlogInfos();
-  const idx = blogInfos.findIndex((e) => e.params.id === id);
+  const idx = blogInfos.findIndex((e) => e.id === id);
 
   return {
     content,
     ...data,
-    prevId: blogInfos[idx - 1]?.params.id ?? "",
-    nextId: blogInfos[idx + 1]?.params.id ?? "",
+    prevId: blogInfos[idx - 1]?.id ?? "",
+    nextId: blogInfos[idx + 1]?.id ?? "",
   };
 }