refactor: added and modified functions to work with PostData and PostMetadata types

Author: steadyfall

src/lib/posts.ts

@@ -10,3 +10,36 @@ export type PostData = {
     metadata: PostMetadata,
     content: string
 }
+
+export function groupPostsByYear(
+    posts: PostMetadata[]
+): { year: number; posts: PostMetadata[] }[] {
+    // Filter out posts with no date to avoid runtime errors
+    // Sort posts by date in descending order
+    // Group posts by year
+    // Sort by year in descending order
+   
+    posts.sort(
+        (a, b) =>
+            (new Date(b.date ?? "").getTime() || 0) -
+            (new Date(a.date ?? "").getTime() || 0),
+    )
+
+    const groupedByYear: { [key: number]: PostMetadata[] } = posts.reduce((acc, post) => {
+        const year = new Date(post.date ?? "").getFullYear() || 1
+        if (!acc[year]) {
+            acc[year] = [];
+        }
+        acc[year].push(post);
+        return acc;
+    }, {} as { [key: number]: PostMetadata[] });
+
+    const postsByYear = Object.keys(groupedByYear)
+        .map(year => ({
+            year: parseInt(year),
+            posts: groupedByYear[parseInt(year)]
+        }))
+        .sort((a, b) => b.year - a.year);
+
+    return postsByYear;
+}

src/lib/utils.ts

@@ -5,17 +5,17 @@ export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
 }
 
-export const formatDate = (d: Date): string => {
+export const formatDate = (d: string): string => {
   return new Intl.DateTimeFormat('en-US', {
     month: 'short',
     day: '2-digit',
     year: 'numeric'
-  }).format(d);
+  }).format(new Date(d));
 };
 
-export const formatShortDate = (d: Date): string => {
+export const formatShortDate = (d: string): string => {
   return new Intl.DateTimeFormat('en-US', {
     month: 'long',
     day: '2-digit',
-  }).format(d);
+  }).format(new Date(d));
 };