import { computed, ref } from "vue";
import { useRouter } from "vue-router";

import { clearToken, getToken, isAuthenticated, login as doLogin, logout as doLogout } from "../auth";

export function useAuth() {
  const router = useRouter();
  const busy = ref(false);
  const error = ref("");

  const authenticated = computed(() => isAuthenticated.value);

  async function login(username: string, password: string): Promise<boolean> {
    busy.value = true;
    error.value = "";
    try {
      await doLogin(username, password);
      return true;
    } catch (err) {
      clearToken();
      error.value = err instanceof Error ? err.message : "Не удалось войти";
      return false;
    } finally {
      busy.value = false;
    }
  }

  function logout(): void {
    doLogout();
    void router.push({ name: "map" });
  }

  return {
    authenticated,
    busy,
    error,
    getToken,
    login,
    logout,
  };
}