proxy.ts

import { createServerClient } from "@supabase/ssr";
import { NextResponse, type NextRequest } from "next/server";

// Routes that require authentication
const PROTECTED_ROUTES = ["/scouts", "/settings", "/scout", "/template"];

// Routes that should redirect to home if already authenticated
const AUTH_ROUTES = ["/login"];

export async function proxy(request: NextRequest) {
  let supabaseResponse = NextResponse.next({
    request,
  });

  const supabase = createServerClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
    {
      cookies: {
        getAll() {
          return request.cookies.getAll();
        },
        setAll(cookiesToSet) {
          cookiesToSet.forEach(({ name, value }) =>
            request.cookies.set(name, value),
          );
          supabaseResponse = NextResponse.next({
            request,
          });
          cookiesToSet.forEach(({ name, value, options }) =>
            supabaseResponse.cookies.set(name, value, options),
          );
        },
      },
    },
  );

  // Refresh session if expired - required for Server Components
  const {
    data: { user },
  } = await supabase.auth.getUser();

  const pathname = request.nextUrl.pathname;

  // Check if accessing a protected route without authentication
  const isProtectedRoute = PROTECTED_ROUTES.some(
    (route) => pathname === route || pathname.startsWith(`${route}/`),
  );

  if (isProtectedRoute && !user) {
    const redirectUrl = new URL("/login", request.url);
    redirectUrl.searchParams.set("redirectTo", pathname);
    return NextResponse.redirect(redirectUrl);
  }

  // Redirect authenticated users away from auth pages
  const isAuthRoute = AUTH_ROUTES.some((route) => pathname === route);

  if (isAuthRoute && user) {
    return NextResponse.redirect(new URL("/scouts", request.url));
  }

  return supabaseResponse;
}

export const config = {
  matcher: [
    /*
     * Match all request paths except for:
     * - _next/static (static files)
     * - _next/image (image optimization files)
     * - favicon.ico (favicon file)
     * - public files (public folder)
     * - api routes (handled separately)
     */
    "/((?!_next/static|_next/image|favicon.ico|api|.*\\.(?:svg|png|jpg|jpeg|gif|webp|ico|woff|woff2)$).*)",
  ],
};