import { useEffect, useState } from "react";
import { supabase } from "@/integrations/supabase/client";
import type { Session, User } from "@supabase/supabase-js";

export function useAuth() {
  const [session, setSession] = useState<Session | null>(null);
  const [user, setUser] = useState<User | null>(null);
  const [isAdmin, setIsAdmin] = useState(false);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    const { data: sub } = supabase.auth.onAuthStateChange((_e, s) => {
      setSession(s);
      setUser(s?.user ?? null);
      if (s?.user) {
        setTimeout(() => {
          supabase.from("user_roles").select("role").eq("user_id", s.user.id).eq("role", "admin").maybeSingle()
            .then(({ data }) => setIsAdmin(!!data));
        }, 0);
      } else {
        setIsAdmin(false);
      }
    });
    supabase.auth.getSession().then(({ data }) => {
      setSession(data.session);
      setUser(data.session?.user ?? null);
      if (data.session?.user) {
        supabase.from("user_roles").select("role").eq("user_id", data.session.user.id).eq("role", "admin").maybeSingle()
          .then(({ data: r }) => setIsAdmin(!!r));
      }
      setLoading(false);
    });
    return () => sub.subscription.unsubscribe();
  }, []);

  return { session, user, isAdmin, loading };
}