feat: enhance file handling and preview features

- Added new dependencies for file type handling and markdown support in package.json.
- Updated FileGrid component to use file extension for FilePreview.
- Refactored FilePreview component to determine file type based on extension, supporting various media types including images, audio, video, text, archives, and code files.
- Created a utility function getFileType to centralize MIME type determination based on file extensions.
- Updated API route to utilize the new getFileType function for serving files with correct MIME types.
- Added Tailwind CSS configuration with typography plugin for improved styling.

package.json

@@ -24,15 +24,21 @@
     "@auth/prisma-adapter": "^2.7.2",
     "@prisma/client": "^6.5.0",
     "@t3-oss/env-nextjs": "^0.12.0",
+    "@tailwindcss/typography": "^0.5.16",
     "@tanstack/react-query": "^5.69.0",
     "@trpc/client": "^11.0.0",
     "@trpc/react-query": "^11.0.0",
     "@trpc/server": "^11.0.0",
+    "dompurify": "^3.2.5",
+    "mermaid": "^11.6.0",
     "next": "^15.2.3",
     "next-auth": "5.0.0-beta.25",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-hot-toast": "^2.5.2",
+    "react-markdown": "^10.1.0",
+    "rehype-raw": "^7.0.0",
+    "remark-gfm": "^4.0.1",
     "server-only": "^0.0.1",
     "superjson": "^2.2.1",
     "zod": "^3.24.2"

src/app/_components/FileGrid.tsx

@@ -103,7 +103,7 @@ export default function FileGrid({ session }: FileGridProps) {
             key={file.id}
             className="flex place-content-end max-w-xs flex-col gap-4 rounded-xl bg-white/10 p-4 hover:bg-white/20"
           >
-            {fileType !== "unknown" && <div className=" self-center max-w-50"><FilePreview fileId={file.id} fileType={fileType} /></div>}
+            {<div className=" self-center max-w-50"><FilePreview fileId={file.id} fileType={file.extension} /></div>}
 
             <button onClick={() => router.push(pageUrl + file.url)}>
               <h3 className="text-2xl font-bold">{file.name}</h3>

src/app/_components/FilePreview.tsx

@@ -51,8 +51,37 @@ export function FilePreview({ fileId, fileType }: FilePreviewProps) {
   if (!mediaSrc) {
     return <div>Loading...</div>;
   }
+  const getFileType = (extension: string): string => {
+    const fileTypes: Record<string, string> = {
+      ".mp4": "video/mp4",
+      ".webm": "video/webm",
+      ".ogg": "video/ogg",
+      ".jpg": "image/jpeg",
+      ".jpeg": "image/jpeg",
+      ".png": "image/png",
+      ".gif": "image/gif",
+      ".svg": "image/svg+xml",
+      ".mp3": "audio/mpeg",
+      ".wav": "audio/wav",
+      ".zip": "archive/zip",
+      ".rar": "archive/rar",
+      ".pdf": "text/pdf",
+      ".txt": "text/plain",
+      ".c" : "code/c",
+      ".cpp" : "code/cpp",
+      ".py" : "code/python",
+      ".js" : "code/javascript",
+      ".html" : "code/html",
+      ".css" : "code/css",
+      ".md" : "markdown/markdown",
+      ".json" : "code/json",
+      ".xml" : "code/xml",
+      ".csv" : "code/csv",
+    };
+    return fileTypes[extension] || "unknown";
+  };
 
-  if (fileType.startsWith("video")) {
+  if (getFileType(fileType).startsWith("video")) {
     return (
       <video
         controls
@@ -63,7 +92,7 @@ export function FilePreview({ fileId, fileType }: FilePreviewProps) {
       </video>
     );
   }
-  if (fileType.startsWith("audio")) {
+  if (getFileType(fileType).startsWith("audio")) {
     return (
       <audio
         controls
@@ -74,6 +103,29 @@ export function FilePreview({ fileId, fileType }: FilePreviewProps) {
       </audio>
     );
   }
+  if (getFileType(fileType).startsWith("image")) {
+    return <img src={mediaSrc} alt="Media preview" className="max-w-full max-h-96 rounded-lg shadow-md" />;
+  }
 
-  return <img src={mediaSrc} alt="Media preview" className="max-w-full max-h-96 rounded-lg shadow-md" />;
+  if (getFileType(fileType).startsWith("text")) {
+    return (
+      <img src="/icons/files/text.svg" alt="Text file preview" className="max-w-full max-h-96 rounded-lg invert" />
+    );
+  }
+  if (getFileType(fileType).startsWith("archive")) {
+    return (
+      <img src="/icons/files/archive.svg" alt="Archive file preview" className="max-w-full max-h-96 rounded-lg invert" />
+    );
+  }
+  if (getFileType(fileType).startsWith("code")) {
+    return (
+      <img src="/icons/files/code.svg" alt="Code file preview" className="max-w-full max-h-96 rounded-lg invert" />
+    );
+  }
+  // if (getFileType(fileType).startsWith("markdown")) {
+  //   return;      
+  //   }
+
+
+  return;
 }

src/app/api/files/serv/route.ts

@@ -2,6 +2,7 @@ import { NextResponse } from "next/server";
 import path from "path";
 import { promises as fs } from "fs";
 import { db } from "~/server/db";
+import { getFileType } from "~/utils/fileType";
 
 export async function GET(req: Request) {
   const url = new URL(req.url);
@@ -27,25 +28,8 @@ export async function GET(req: Request) {
     // Read the file from the filesystem
     const fileBuffer = await fs.readFile(filePath);
 
-    const mimeType = file.extension === ".mp4"
-      ? "video/mp4"
-      : file.extension === ".webm"
-      ? "video/webm"
-      : file.extension === ".ogg"
-      ? "video/ogg"
-      : file.extension === ".jpg" || file.extension === ".jpeg"
-      ? "image/jpeg"
-      : file.extension === ".png"
-      ? "image/png"
-      : file.extension === ".gif"
-      ? "image/gif"
-      : file.extension === ".svg"
-      ? "image/svg+xml"
-      : file.extension === ".mp3"
-      ? "audio/mpeg"
-      : file.extension === ".wav"
-      ? "audio/wav"
-      : "application/octet-stream";
+    const mimeType = getFileType(path.extname(file.name)); // Get the MIME type based on the file extension
+
 
     // Return the file as a binary response
     return new Response(fileBuffer, {

src/utils/fileType.ts

@@ -0,0 +1,31 @@
+// This function takes a file name as input and returns the file type based on its extension.
+
+export function getFileType(extension: string): string {
+    const fileTypes: Record<string, string> = {
+        ".mp4": "video/mp4",
+        ".webm": "video/webm",
+        ".ogg": "video/ogg",
+        ".jpg": "image/jpeg",
+        ".jpeg": "image/jpeg",
+        ".png": "image/png",
+        ".gif": "image/gif",
+        ".svg": "image/svg+xml",
+        ".mp3": "audio/mpeg",
+        ".wav": "audio/wav",
+        ".zip": "archive/zip",
+        ".rar": "archive/rar",
+        ".pdf": "text/pdf",
+        ".txt": "text/plain",
+        ".c": "code/c",
+        ".cpp": "code/cpp",
+        ".py": "code/python",
+        ".js": "code/javascript",
+        ".html": "code/html",
+        ".css": "code/css",
+        ".md": "markdown/markdown",
+        ".json": "code/json",
+        ".xml": "code/xml",
+        ".csv": "code/csv",
+    };
+    return fileTypes[extension] || "unknown";
+  };

tailwind.config.ts

@@ -0,0 +1,6 @@
+module.exports = {
+  content: [
+    "./src/**/*.{js,ts,jsx,tsx}", // Ensure your paths are correct
+  ],
+  plugins: [require("@tailwindcss/typography")],
+};