middleware.ts

import { NextResponse } from "next/server"
import type { NextRequest } from "next/server"

export function middleware(request: NextRequest) {
  const authToken = request.cookies.get("auth-token")?.value
  const { pathname } = request.nextUrl

  // Public routes that don't require authentication
  const publicRoutes = ["/signin", "/signup", "/forgot-password"]

  // Check if the route is public
  const isPublicRoute = publicRoutes.some((route) => pathname.startsWith(route))

  // If the route is public and the user is authenticated, redirect to home
  if (isPublicRoute && authToken) {
    return NextResponse.redirect(new URL("/", request.url))
  }

  // If the route is not public and the user is not authenticated, redirect to signin
  if (!isPublicRoute && !authToken && pathname !== "/") {
    return NextResponse.redirect(new URL("/signin", request.url))
  }

  return NextResponse.next()
}

export const config = {
  matcher: [
    /*
     * Match all request paths except for the ones starting with:
     * - api (API routes)
     * - _next/static (static files)
     * - _next/image (image optimization files)
     * - favicon.ico (favicon file)
     */
    "/((?!api|_next/static|_next/image|favicon.ico).*)",
  ],
}