namespace XmobiTea.MiniDeviceId
{
    using System;
    using UnityEngine;

    [Serializable]
    public class CustomId
    {
        // Native plugin JSON payload shape: {"userId":"...","uuid":"..."}
        [SerializeField]
        public string userId;

        [SerializeField]
        public string uuid;
    }

    /// <summary>
    /// Apple-family implementation that persists the identifier through the native keychain bridge.
    /// This asmdef is compiled for iOS, macOSStandalone, and tvOS in this package.
    /// The repo ships native bridge source files under Plugins/iOS for iOS and tvOS imports.
    /// </summary>
    public class Implement
    {
        private static readonly string UserSlotId = "0";

        /// <summary>
        /// Returns the persisted keychain UUID when available.
        /// If the keychain entry is empty, falls back to SystemInfo.deviceUniqueIdentifier,
        /// then saves that value into the native keychain store.
        /// </summary>
        public static string Get()
        {
            var customId = JsonUtility.FromJson<CustomId>(CXKeyChain.BindGetKeyChainUser());

            var deviceId = customId.uuid;
            if (string.IsNullOrEmpty(deviceId))
            {
                deviceId = SystemInfo.deviceUniqueIdentifier;
                CXKeyChain.BindSetKeyChainUser(UserSlotId, deviceId);
                Debug.Log("===Saved uuid on empty: [" + deviceId + "]");
            }

            return deviceId;
        }
    }
}