using AOT.Boot;
using HotUpdate.Net;
using UnityEngine;
using UnityEngine.UI;

namespace HotUpdate
{
    /// <summary>
    /// 热更稳定入口（壳通过反射/Assembly.Load 调用，签名勿改）。
    /// </summary>
    public static class Entry
    {
        public static void Start(BootContext ctx)
        {
            Debug.Log($"[HotUpdate.Entry] Start app={ctx?.AppVersion} res={ctx?.ResVersion}");

            var root = new GameObject("HotUpdateRoot");
            Object.DontDestroyOnLoad(root);
            root.AddComponent<HotUpdateBootstrap>().Bind(ctx);
        }
    }

    public sealed class HotUpdateBootstrap : MonoBehaviour
    {
        BootContext _ctx;
        GameNet _net;
        Text _hud;

        public void Bind(BootContext ctx)
        {
            _ctx = ctx;
        }

        void Start()
        {
            Debug.Log($"[HotUpdate] Bootstrap ready. CDN={_ctx?.CdnRoot}");
            EnsureHud();

            // M3：示例角色（与网络并行，不依赖 WS）
            var spawner = gameObject.AddComponent<CharacterSpawner>();
            spawner.Bind(_ctx);
            spawner.Spawn();

            _net = gameObject.AddComponent<GameNet>();
            _net.Bind(_ctx);
            _net.OnStatus += s =>
            {
                if (_hud != null) _hud.text = s;
            };
            _net.OnWsReady += () =>
            {
                if (_hud != null)
                    _hud.text = $"WS OK pid={_net.Session?.Pid} | MaleExplorer";
                Debug.Log($"[HotUpdate] M2 WS ready pid={_net.Session?.Pid}");
            };
            _net.StartGuestSession();
        }

        void EnsureHud()
        {
            var canvasGo = new GameObject("NetHud");
            canvasGo.transform.SetParent(transform, false);
            var canvas = canvasGo.AddComponent<Canvas>();
            canvas.renderMode = RenderMode.ScreenSpaceOverlay;
            canvas.sortingOrder = 200;
            var scaler = canvasGo.AddComponent<CanvasScaler>();
            scaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
            scaler.referenceResolution = new Vector2(1080, 1920);
            canvasGo.AddComponent<GraphicRaycaster>();

            var textGo = new GameObject("Status");
            textGo.transform.SetParent(canvasGo.transform, false);
            _hud = textGo.AddComponent<Text>();
            _hud.font = Resources.GetBuiltinResource<Font>("LegacyRuntime.ttf");
            _hud.fontSize = 28;
            _hud.color = Color.white;
            _hud.alignment = TextAnchor.LowerCenter;
            var rt = textGo.GetComponent<RectTransform>();
            rt.anchorMin = new Vector2(0.05f, 0.08f);
            rt.anchorMax = new Vector2(0.95f, 0.16f);
            rt.offsetMin = Vector2.zero;
            rt.offsetMax = Vector2.zero;
            _hud.text = "net…";
        }
    }
}