/*
* @Author: 白哉
* @Description: 
* @Date: 2025年04月03日 星期四 11:04:31
* @Modify: 
*/


using System.Collections.Generic;
using Logic.AI;
using MemoryPack;
using Steamworks;
using TH1_Logic.Steam;
using UnityEngine;


namespace RuntimeData
{
    // 网络信息
    [MemoryPackable]
    public partial class NetData
    {
        // 地图哈希
        public string MapHash;
        // PlayerId => SteamId 的索引
        public Dictionary<uint, ulong> Players;
        // 所有玩家行为的序列
        public List<ActionNetData> Actions;
        // 随机数种子 开始游戏时由房主进行初始化，整局游戏不可变
        public int RandomSeed;
        private System.Random _random;
        
        [MemoryPackConstructor]
        public NetData()
        {
            Players = new Dictionary<uint, ulong>();
            Actions = new List<ActionNetData>();
            // 生成确定性种子（由房主生成并广播）
            RandomSeed = System.Environment.TickCount;
        }
        
        // 这里单纯是因为深拷贝目前只用于 AI 演算，故不对 Players 和 Actions 赋值
        public NetData(NetData copyData)
        {
            MapHash = copyData.MapHash;
            RandomSeed = copyData.RandomSeed;
            Players = new Dictionary<uint, ulong>();
            Actions = new List<ActionNetData>();
        }
        
        // 这里单纯是因为深拷贝目前只用于 AI 演算，故不对 Players 和 Actions 赋值
        public void DeepCopy(NetData copyData)
        {
            MapHash = copyData.MapHash;
            RandomSeed = copyData.RandomSeed;
            Players = new Dictionary<uint, ulong>();
            Actions = new List<ActionNetData>();
        }
        
        public System.Random GetRandom()
        {
            if (_random == null) _random = new System.Random(RandomSeed);
            return _random;
        }

        public void RefreshMapNet(MapData mapData)
        {
            if (!SteamLobbyManager.Instance.IsLobbyOwner) return;
            // 地图初始哈希
            MapHash = GetMapDataHash(mapData);
            // 添加自己
            if (!Players.ContainsKey(mapData.PlayerMap.SelfPlayerId))
            {
                Players[mapData.PlayerMap.SelfPlayerId] = SteamUser.GetSteamID().m_SteamID;
            }
            // 添加其他人
            foreach (var cSteamID in SteamLobbyManager.Instance.EnumerateMembers())
            {
                if (Players.ContainsValue(cSteamID.m_SteamID)) continue;
                foreach (var player in mapData.PlayerMap.PlayerDataList)
                {
                    if (player.Id == mapData.PlayerMap.SelfPlayerId) continue;
                    if (Players.ContainsKey(player.Id)) return;
                    Players[player.Id] = cSteamID.m_SteamID;
                }
            }
        }

        public uint GetActionVersion()
        {
            if (Actions.Count == 0) return 0;
            return Actions[^1].Version + 1;
        }

        public static string GetMapDataHash(MapData mapData)
        {
            byte[] bytes = MemoryPackSerializer.Serialize(mapData);
            // 使用 Unity 的 Hash128（性能很好且稳定）
            var hash128 = new Hash128();
            hash128.Append(bytes);
            return hash128.ToString();
        }
    }
}