feat(content): organize platform media sections

lib/content-page.ts

@@ -2,9 +2,49 @@ import { readdir } from "node:fs/promises";
 import path from "node:path";
 
 const PDF_DIR = path.join(process.cwd(), "public", "pdf");
+const PDF_THUMBNAIL_DIR = path.join(
+  process.cwd(),
+  "public",
+  "pdf-thumbnails",
+);
+const PDF_LIMIT = 3;
 
-export async function getPdfNotes() {
-  const files = await readdir(PDF_DIR);
+export type PdfNote = {
+  fileName: string;
+  title: string;
+  href: string;
+  thumbnailSrc: string | null;
+};
+
+function formatPdfTitle(fileName: string) {
+  return fileName
+    .replace(/\.pdf$/i, "")
+    .split(/[-_]+/)
+    .map((part) => part.charAt(0).toLocaleUpperCase("tr-TR") + part.slice(1))
+    .join(" ");
+}
+
+export async function getPdfNotes(): Promise<PdfNote[]> {
+  const [files, thumbnailFiles] = await Promise.all([
+    readdir(PDF_DIR),
+    readdir(PDF_THUMBNAIL_DIR).catch(() => [] as string[]),
+  ]);
+  const thumbnails = new Set(thumbnailFiles);
   const pdfFiles = files.filter((file) => file.toLowerCase().endsWith(".pdf"));
-  return pdfFiles.sort((a, b) => a.localeCompare(b));
+
+  return pdfFiles
+    .sort((a, b) => a.localeCompare(b, "tr"))
+    .slice(0, PDF_LIMIT)
+    .map((fileName) => {
+      const thumbnailName = `${fileName.replace(/\.pdf$/i, "")}.jpg`;
+
+      return {
+        fileName,
+        title: formatPdfTitle(fileName),
+        href: `/pdf/${fileName}`,
+        thumbnailSrc: thumbnails.has(thumbnailName)
+          ? `/pdf-thumbnails/${thumbnailName}`
+          : null,
+      };
+    });
 }