middleware.ts

import authConfig from "./auth.config"
import NextAuth from "next-auth"
import { apiAuthPrefix, authRoutes, DEFAULT_LOGIN_REDIRECT, publicRoutes } from "./routes"

const { auth: middleware } = NextAuth(authConfig)

export default middleware((req) => {
    const { nextUrl } = req
    const isLoggedIn = !!req.auth

    const isApiAuthRoute = nextUrl.pathname.startsWith(apiAuthPrefix)
    const isPublicRoute = publicRoutes.includes(nextUrl.pathname)
    const isAuthRouet = authRoutes.includes(nextUrl.pathname)

    if (isApiAuthRoute) {
        return null
    }

    if (isAuthRouet) {
        if (isLoggedIn) {
            return Response.redirect(new URL(DEFAULT_LOGIN_REDIRECT, nextUrl))
        }
        return null
    }

    if (!isLoggedIn && !isPublicRoute) {
        let callBackUrl = nextUrl.pathname
        if (nextUrl.search) {
            callBackUrl += nextUrl.search
        }

        const encodedCallbackUrl = encodeURIComponent(callBackUrl)

        return Response.redirect(new URL(`/auth/login?callbackUrl=${encodedCallbackUrl}`, nextUrl))
    }

    return null
})

export const config = {
    matcher: ["/((?!.+\\.[\\w]+$|_next).*)", "/", "/(api|trpc)(.*)"],
};