using System;
using UnityEngine;

namespace Kill.UI.Pages
{
    /// <summary>
    /// 原生二维码扫描 - 调用系统相机扫码
    /// </summary>
    public class NativeQRScanner : MonoBehaviour
    {
        // 扫码结果回调
        public event Action<string> OnQRCodeScanned;

        /// <summary>
        /// 开始扫码
        /// </summary>
        public void StartScan()
        {
            #if UNITY_EDITOR
            // 编辑器模拟
            Debug.Log("[NativeQRScanner] 编辑器模式，模拟扫码");
            // 可以弹窗输入测试
            #elif UNITY_ANDROID
            using (AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
            using (AndroidJavaObject currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
            using (AndroidJavaObject intent = new AndroidJavaObject("android.content.Intent", "com.google.zxing.client.android.SCAN"))
            {
                intent.Call<AndroidJavaObject>("putExtra", "SCAN_MODE", "QR_CODE_MODE");
                currentActivity.Call("startActivityForResult", intent, 0);
            }
            #elif UNITY_IOS
            // iOS 需要写原生插件
            _StartScanIOS();
            #endif
        }

        #if UNITY_IOS
        [System.Runtime.InteropServices.DllImport("__Internal")]
        private static extern void _StartScanIOS();
        #endif

        /// <summary>
        /// 接收扫码结果（从原生回调）
        /// </summary>
        public void OnScanResult(string result)
        {
            Debug.Log($"[NativeQRScanner] 扫码结果: {result}");
            OnQRCodeScanned?.Invoke(result);
        }
    }
}