// ====== 2025线程安全日志系统 ======
using Cysharp.Threading.Tasks;
using System;
using System.IO;
using System.Threading;
using UnityEngine;

public static class LogSystem2025
{
    /// <summary> 日志存放的可读写位置 </summary>
    public static string mLogPath = Application.persistentDataPath;
    /// <summary> 日志存放文件名 </summary>
    public static readonly string mLogName = "CollectRunLog.log";
    /// <summary> 日志存放完整路径 </summary>
    private static readonly string LogPath = Path.Combine(mLogPath, mLogName);
    private static readonly object fileLock = new object();

    /// <summary>
    /// 初始化日志系统（游戏启动时调用）
    /// </summary>
    [RuntimeInitializeOnLoadMethod]
    static void Initialize()
    {
        ClearLogAsync().Forget();
        Application.logMessageReceivedThreaded += OnLogReceived;
    }

    /// <summary>
    /// 清空日志文件（线程池执行）
    /// </summary>
    private static async UniTaskVoid ClearLogAsync()
    {
        await UniTask.RunOnThreadPool(() => {
            lock (fileLock)
            {
                try
                {
                    using (var fs = new FileStream(LogPath, FileMode.Create,
                        FileAccess.Write, FileShare.None, 4096, true))
                    {
                        fs.SetLength(0); // 原子清空操作‌:ml-citation{ref="2,3" data="citationList"}
                    }
                    File.AppendAllText(LogPath, $"=== 日志初始化 {System.DateTime.Now:yyyy-MM-dd} ===\n");
                }
                catch (IOException ex)
                {
                    CDebug.LogError($"日志清空失败: {ex.Message}");
                }
            }
        });
    }

    /// <summary>
    /// 日志接收回调（线程安全）
    /// </summary>
    private static void OnLogReceived(string condition, string stackTrace, LogType type)
    {
        UniTask.RunOnThreadPool(() => 
        {
            if (type == LogType.Error)//只选择了错误的日志记录(按需设置)
            {
                var logEntry = $"[{type}] {System.DateTime.Now:HH:mm:ss} {condition}\n{stackTrace}\n";

                lock (fileLock)
                {
                    try
                    {
                        File.AppendAllText(LogPath, logEntry); // 异步追加写入‌:ml-citation{ref="1" data="citationList"}
                    }
                    catch (Exception ex)
                    {
                        CDebug.LogError($"日志写入失败: {ex.Message}");
                    }
                }
            }

        }).Forget();
    }
}