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

export async function middleware(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)
          );
        },
      },
    }
  );

  const {
    data: { user },
  } = await supabase.auth.getUser();

  // Rediriger vers login si pas connecte et route protegee
  if (
    !user &&
    (request.nextUrl.pathname.startsWith("/dashboard") ||
      request.nextUrl.pathname.startsWith("/formations") ||
      request.nextUrl.pathname.startsWith("/profil"))
  ) {
    const url = request.nextUrl.clone();
    url.pathname = "/login";
    return NextResponse.redirect(url);
  }

  // Rediriger vers dashboard si deja connecte et sur login/register
  if (
    user &&
    (request.nextUrl.pathname === "/login" ||
      request.nextUrl.pathname === "/register")
  ) {
    const url = request.nextUrl.clone();
    url.pathname = "/dashboard";
    return NextResponse.redirect(url);
  }

  return supabaseResponse;
}

export const config = {
  matcher: [
    "/dashboard/:path*",
    "/formations/:path*",
    "/profil/:path*",
    "/login",
    "/register",
  ],
};