implement down load file

docs/notes.md

@@ -355,4 +355,18 @@ Now we will go now and add metadata
 
 Now we have the metadata along with some great filters on the data board page
 
-Now we are going to implement an an update of a file or folder stored. 12/1/2026
+Now we are going to implement an an update of a file or folder stored. 12/1/2026
+
+For download there 2 function we need to implement
+
+1) down load the file to ~/user/Downloads, this should work for any file type including pdf
+
+2) if the file is a pdf open the file in another tab in the browser as most browser support reading a pdf
+
+For download there 2 function we need to implement
+
+1) down load the file to ~/user/Downloads, this should work for any file type including pdf
+
+2) if the file is a pdf open the file in another tab in the browser as most browser support reading a pdf
+
+So we need to implement 2 new actions, downLoad file and open pdf to read. Does this make sense ?

src/app/api/download/route.ts

@@ -0,0 +1,66 @@
+// src/app/api/download/route.ts
+"use server"
+
+import { NextRequest, NextResponse } from 'next/server';
+import { auth } from "@/auth"; // Import the auth function from your central config
+import { prisma } from '@/lib/prisma';
+
+export async function GET(request: NextRequest) {
+  try {
+    // 1. Check Authentication using the V5 auth() helper
+    const session = await auth();
+    
+    // In V5, tokens are usually handled in the session callback
+    if (!session || !session.accessToken) {
+      return new NextResponse("Unauthorized - No Access Token found", { status: 401 });
+    }
+
+    // 2. Get parameters from URL
+    const { searchParams } = new URL(request.url);
+    const fileNodeId = searchParams.get('id');
+    const mode = searchParams.get('mode') === 'inline' ? 'inline' : 'attachment';
+
+    if (!fileNodeId) {
+      return new NextResponse("File ID is required", { status: 400 });
+    }
+
+    // 3. Find the file in your Postgres FileNode table
+    const fileNode = await prisma.fileNode.findUnique({
+      where: { id: fileNodeId }
+    });
+
+    if (!fileNode || !fileNode.oneDriveId) {
+      return new NextResponse("File not found in database", { status: 404 });
+    }
+
+    // 4. Fetch the file stream from Microsoft Graph
+    const graphResponse = await fetch(
+      `https://graph.microsoft.com/v1.0/me/drive/items/${fileNode.oneDriveId}/content`,
+      {
+        headers: {
+          Authorization: `Bearer ${session.accessToken}`,
+        },
+      }
+    );
+
+    if (!graphResponse.ok) {
+      const errorText = await graphResponse.text();
+      console.error('MS Graph Error:', errorText);
+      return new NextResponse(`OneDrive Error: ${graphResponse.statusText}`, { status: graphResponse.status });
+    }
+
+    // 5. Stream the response directly to the client
+    return new NextResponse(graphResponse.body, {
+      status: 200,
+      headers: {
+        'Content-Type': fileNode.mimeType || 'application/octet-stream',
+        // Note: Using encodeURIComponent for filename to handle special characters
+        'Content-Disposition': `${mode}; filename="${encodeURIComponent(fileNode.name)}"`,
+      },
+    });
+
+  } catch (error) {
+    console.error('Download error:', error);
+    return new NextResponse("Internal Server Error", { status: 500 });
+  }
+}

src/auth.ts

@@ -1,3 +1,4 @@
+// src/auth.ts
 import NextAuth from "next-auth";
 import { PrismaAdapter } from "@auth/prisma-adapter";
 import { prisma } from "@/lib/prisma";
@@ -10,6 +11,7 @@ export const { handlers, signIn, signOut, auth } = NextAuth({
   callbacks: {
     async jwt({ token, account, user }) {
       // 1. Handle OAuth tokens (from first sign-in)
+      // This captures the tokens directly from the Microsoft Azure response
       if (account) {
         token.accessToken = account.access_token;
         token.refreshToken = account.refresh_token;
@@ -17,10 +19,10 @@ export const { handlers, signIn, signOut, auth } = NextAuth({
       }
 
       // 2. Attach User ID and Role to the token
-      // When 'user' exists, it's the first time we've fetched this user from the DB during login
+      // This runs when the user first logs in
       if (user) {
         token.sub = user.id;
-        // @ts-ignore - 'role' exists on our custom User model
+        // @ts-ignore - 'role' is a custom field in your Postgres User table
         token.role = user.role;
       }
 
@@ -29,10 +31,16 @@ export const { handlers, signIn, signOut, auth } = NextAuth({
 
     async session({ session, token }) {
       // 3. Pass values from the JWT Token into the Client-facing Session
-      if (session?.user && token.sub) {
-        session.user.id = token.sub;
-        // @ts-ignore - Attaching the role so the Navbar and Settings page can see it
-        session.user.role = token.role;
+      // This makes the tokens and IDs available to your API routes and Components
+      if (session?.user) {
+        session.user.id = token.sub as string;
+        
+        // @ts-ignore - Attaching the role for UI permissions
+        session.user.role = token.role as string;
+        
+        // IMPORTANT: We must attach the accessToken here so the 
+        // /api/download route can use it to fetch from MS Graph
+        session.accessToken = token.accessToken as string;
       }
       return session;
     },

src/types/next-auth.d.ts

@@ -0,0 +1,24 @@
+// src/types/next-auth.d.ts
+import NextAuth, { DefaultSession } from "next-auth"
+import { JWT } from "next-auth/jwt"
+
+declare module "next-auth" {
+  /**
+   * Returned by `useSession`, `auth`, and received as a prop on the `SessionProvider` React Context
+   */
+  interface Session {
+    accessToken?: string;
+    user: {
+      id: string;
+      role?: string;
+    } & DefaultSession["user"]
+  }
+}
+
+declare module "next-auth/jwt" {
+  /** Returned by the `jwt` callback and `getToken`, when using JWT sessions */
+  interface JWT {
+    accessToken?: string;
+    role?: string;
+  }
+}