export function useUserSwitching() {
  const toast = useToast();
  const { fetch: refreshUserSession } = useUserSession();
  const { session } = useUserSession();

  const isUserSwitched = computed(() => Boolean(session.value?.switchedBy));

  async function userSwitchTo(userId: string | number) {
    try {
      const { data, errors } = await useGraphqlMutation("userSwitchTo", { userId });
      if (errors.length || !data.userSwitchTo) {
        throw new Error("Une erreur est survenue");
      }
      await refreshUserSession();
    }
    catch (error) {
      const message = error instanceof Error ? error.message : "Une erreur est survenue";
      toast.add({ title: "Échec du changement d'utilisateur", description: message, color: "error" });
    }
  }

  async function userSwitchBack() {
    try {
      const result = await $fetch("/api/switch-back", { method: "POST" });
      if (!result.success) {
        throw new Error("Une erreur est survenue.");
      }
      await refreshUserSession();
    }
    catch (error) {
      const message = error instanceof Error ? error.message : "Une erreur est survenue";
      toast.add({ title: "Échec du changement d'utilisateur", description: message, color: "error" });
    }
  }

  return { isUserSwitched, userSwitchTo, userSwitchBack };
}