using System;
using System.Collections;
using System.IO;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using UnityEngine;
using Valheim;

public class HttpServer : MonoBehaviour
{
    private HttpListener listener;
    private Thread listenThread;
    private volatile bool isRunning;

    // ❗不要用 +
    private const string SERVER_URL = "http://127.0.0.1:12345/";

    void Awake()
    {
        DontDestroyOnLoad(gameObject);
    }

    IEnumerator Start()
    {
        // ✅ 让 Unity / XR 先起来
        yield return null;
        yield return new WaitForSeconds(1.5f);

        // ✅ 后台启动
        Task.Run(StartServer);
        Debug.Log("Http,开始请求");
    }

    private void StartServer()
    {
        try
        {
            listener = new HttpListener();
            listener.Prefixes.Add(SERVER_URL);
            listener.Start();

            isRunning = true;

            listenThread = new Thread(ListenLoop)
            {
                IsBackground = true
            };
            listenThread.Start();

            Debug.Log($"✅ HTTP Server 启动成功：{SERVER_URL}");
        }
        catch (Exception e)
        {
            Debug.LogError("❌ HTTP Server 启动失败：" + e);
        }
    }

    private void ListenLoop()
    {
        while (isRunning)
        {
            try
            {
                var context = listener.GetContext();
                ProcessRequest(context);
            }
            catch
            {
                break;
            }
        }
    }

    private void ProcessRequest(HttpListenerContext context)
    {
        var response = context.Response;
        response.ContentType = "application/json; charset=utf-8";

        try
        {
            string json =
                $"{{\"code\":200,\"data\":{{\"gameName\":\"{GetGameName()}\"," +
                $"\"gameTotalTime\":{GetTotalTime()},\"currentPlayTime\":{GetPlayTime()}}}}}";

            byte[] data = Encoding.UTF8.GetBytes(json);
            response.OutputStream.Write(data, 0, data.Length);
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
        finally
        {
            response.Close();
        }
    }

    private string GetGameName()
    {
        return GameInit.Ins != null ? GameInit.Ins.gameId.ToString() : "unknown";
    }

    private int GetTotalTime()
    {
        return GameInit.Ins != null ? Mathf.FloorToInt(GameManager .Ins.vistAllTime) : 0;
    }

    private int GetPlayTime()
    {
        return GameInit.Ins != null ? GameManager.Ins.GetNowTime() : 0;
    }

    void OnDestroy()
    {
        isRunning = false;
        listener?.Close();
    }
}