middleware.ts

// import { auth } from "@/auth"

import NextAuth from "next-auth";

import authConfig from "./auth.config";
import { apiAuthPrefix, authRoutes, DEFAULT_LOGIN_REDIRECT, publicRoutes } from "./route";
const {auth}=NextAuth(authConfig);




export default auth((req) => {
//   const isLoggedIn= !!req.auth // adding !! makes it an boolean variable
//   console.log("ROUTE- ",req.nextUrl.pathname);
//   console.log("Is Logged in ",isLoggedIn)

    const {nextUrl}=req;
    const isLoggedin= !!req.auth;

    const isApiAuthRoute=nextUrl.pathname.startsWith(apiAuthPrefix)

    const isPublicRoute=publicRoutes.includes(nextUrl.pathname); // checking weather the url is among the publicRoutes we will always allow this public routes

    const isAuthRoute = authRoutes.includes(nextUrl.pathname); 

    if(isApiAuthRoute)
    {
        return undefined
        // auth - next auth routes always allow them 
    }

    if(isAuthRoute){
        if(isLoggedin){
            return Response.redirect(new URL(DEFAULT_LOGIN_REDIRECT,nextUrl))
        }
        return undefined;
    }

    if(!isLoggedin && !isPublicRoute){
        // not logged in and not on a public route we will redirect the person to login
        return Response.redirect(new URL('/auth/login',nextUrl));
    }

    return undefined;
})

//  we will be using the route path + isLoggedin Paramater to determine what has to be done with
// the Current Route on which the user in RN


// Optionally, don't invoke Middleware on some paths
export const config = {
    matcher: [
      // Skip Next.js internals and all static files, unless found in search params
      '/((?!_next|[^?]*\\.(?:html?|css|js(?!on)|jpe?g|webp|png|gif|svg|ttf|woff2?|ico|csv|docx?|xlsx?|zip|webmanifest)).*)',
      // Always run for API routes
      '/(api|trpc)(.*)',
    ],
  }