If user is authenticated, redirect to app from /login and /register pages

frontend-next/src/middleware.js

@@ -3,35 +3,53 @@ import { NextResponse } from "next/server";
 import { cookies } from "next/headers";
 
 export async function middleware(req, res) {
-  const session = req.cookies.get("session");
-  // Login if not logged in
-  if (!session) {
-    return NextResponse.redirect(new URL("/login", req.url));
-  }
-  //Call the authentication endpoint
-  const responseAPI = await fetch(new URL("/api/login", req.url), {
-    headers: {
-      Cookie: `session=${session?.value}`,
-    },
-  });
+  const session = await req.cookies.get("session");
+  if (req.nextUrl.pathname !== "/login" && req.nextUrl.pathname != "/register") {
+    // Login if not logged in
+    if (!session) {
+      return NextResponse.redirect(new URL("/login", req.url));
+    }
+    //Call the authentication endpoint
+    const responseAPI = await fetch(new URL("/api/login", req.url), {
+      headers: {
+        Cookie: `session=${session?.value}`,
+      },
+    });
 
-  // Login if unauthorized
-  if (responseAPI.status !== 200) {
-    return NextResponse.redirect(new URL("/login", req.url));
-  }
+    // Login if unauthorized
+    if (responseAPI.status !== 200) {
+      return NextResponse.redirect(new URL("/login", req.url));
+    }
 
-  // If new user, redirect to onboarding
-  var user = JSON.parse(req.cookies.get("user").value)
-  if (user.defined) {
-    return NextResponse.next();
+    // If new user, redirect to onboarding
+    var user = JSON.parse(req.cookies.get("user").value)
+    if (user.defined) {
+      return NextResponse.next();
+    } else {
+      return NextResponse.redirect(new URL("/onboarding", req.url));
+    }
   } else {
-    return NextResponse.redirect(new URL("/onboarding", req.url));
+    // Currently in the /login or /register, if user is authenticated, go ahead and direct them to the app
+    if (session) {
+      const responseAPI = await fetch(new URL("/api/login", req.url), {
+        headers: {
+          Cookie: `session=${session?.value}`,
+        },
+      });
+      if (responseAPI.status == 200) {
+        return NextResponse.redirect(new URL("/app", req.url))
+      } else {
+        return NextResponse.next() // Unauthenticated, continue
+      }
+    } else {
+      return NextResponse.next() // Not logged in, direct to login
+    }
   }
 }
 
 //Protected routes
 export const config = {
-  matcher: ['/((?!login|register|onboarding|api|_next/static|_next/image|auth|favicon.ico|robots.txt|images|logo|$).*)',],
+  matcher: ['/((?!onboarding|api|_next/static|_next/image|auth|favicon.ico|robots.txt|images|logo|$).*)',],
   missing: [
     { type: 'header', key: 'next-router-prefetch' },
     { type: 'header', key: 'purpose', value: 'prefetch' },