using System;
using System.IO;

namespace AutoFocusTool.Logging
{
    /// <summary>
    /// 静态文件日志器：程序启动时按时间戳建一个文件，本次运行所有日志写入它。
    /// 线程安全（lock），每条 flush。格式：HH:mm:ss.fff  [级别]  [类别]  消息
    /// </summary>
    public static class FileLogger
    {
        private static readonly object _lock = new object();
        private static string _path;

        /// <summary>启动时调用一次：在 Logs/ 下建 yyyy-MM-dd_HHmmss.log。</summary>
        public static void Init()
        {
            lock (_lock)
            {
                if (_path != null) return;
                string dir = @"C:\claudeFile\TL\AutoFocusTool\Logs";
                Directory.CreateDirectory(dir);
                _path = Path.Combine(dir, $"{DateTime.Now:yyyy-MM-dd_HHmmss}.log");
                Write("INFO", "APP", "==== 日志开始 ====");
            }
        }

        public static void Info(string category, string msg) => Write("INFO", category, msg);
        public static void Action(string category, string msg) => Write("ACTION", category, msg);
        public static void Data(string category, string msg) => Write("DATA", category, msg);
        public static void Warn(string category, string msg) => Write("WARN", category, msg);
        public static void Error(string category, string msg) => Write("ERROR", category, msg);

        private static void Write(string level, string category, string msg)
        {
            try
            {
                lock (_lock)
                {
                    if (_path == null) return;   // 未 Init 则静默丢弃
                    string line = $"{DateTime.Now:HH:mm:ss.fff}  [{level,-6}] [{category,-6}] {msg}";
                    File.AppendAllText(_path, line + Environment.NewLine);
                }
            }
            catch { /* 日志失败不能影响主流程 */ }
        }
    }
}