using System;
using UnityEngine;

namespace HotUpdate.Net
{
    public static class DeviceId
    {
        const string PrefKey = "aigame.device_id";

        public static string GetOrCreate()
        {
            var id = PlayerPrefs.GetString(PrefKey, string.Empty);
            if (!string.IsNullOrEmpty(id))
                return id;

            id = $"ed_{Guid.NewGuid():N}".Substring(0, 18);
            PlayerPrefs.SetString(PrefKey, id);
            PlayerPrefs.Save();
            return id;
        }
    }
}