using System;
using System.IO;
using System.Threading.Tasks;

namespace ReleaseHelper.Utils
{
    public static class Log
    {
        private readonly static object _lock = new object();
        private static string logAll = "";
        private static string logTmp = "";
        private static readonly string logPath = Path.Combine(Environment.CurrentDirectory, "log");

        /// <summary>
        /// 日志处理的委托
        /// </summary>
        /// <param name="s"></param>
        public delegate void SetLog(string s);
        /// <summary>
        /// 具体委托的实例
        /// </summary>
        public static SetLog DoSetLog;

        public static string Now()
        {
            return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
        }

        private static string Today()
        {
            return DateTime.Now.ToString("yyyy-MM-dd");
        }

        /// <summary>
        /// 记录错误
        /// </summary>
        /// <param name="exception"></param>
        public static void Error(Exception exception)
        {
            WriteLine(exception.StackTrace, "error", force: true);
        }

        /// <summary>
        /// 记录信息
        /// </summary>
        /// <param name="s"></param>
        /// <param name="t"></param>
        /// <param name="filename"></param>
        public static void WriteLine(string s, string t = "log", string filename = null, bool force = false)
        {
            if (s != null)
            {
                string info = $"{Now()} [{t}] {s}\r\n";
                Console.Write(info);
                lock (_lock)
                {
                    logAll = string.Concat(logAll, info);
                    logTmp = string.Concat(logTmp, info);
                }
#if DEBUG
                DoSetLog?.Invoke(logTmp);
#endif
                //Forms.Instances.MainEntrance().SetLog(Variables.Variables.LogTmp);
                Save(force);
            }
        }

        /// <summary>
        /// 保存信息
        /// </summary>
        /// <param name="force"></param>
        public static void Save(bool force = false, string filename = null)
        {
            //lock (Variables.Variables.LogTmp)
            //{
            if (force || logTmp.Length > 30000)
            {
                //if (!File.Exists(Variables.Variables.AppLogPath))
                //{
                //    string p = Variables.Variables.AppLogPath;
                //    if (!Directory.Exists(p))
                //    {
                //        Directory.CreateDirectory(Variables.Variables.AppLogPath);
                //    }
                //}
                if (string.IsNullOrEmpty(filename))
                {
                    filename = Today();
                }
                //File.AppendAllText(Path.Combine(Variables.Variables.AppLogPath, $"{filename}.txt"), Variables.Variables.LogTmp, System.Text.Encoding.UTF8);
                string txt;
                lock (_lock)
                {
                    txt = logTmp;
                    logTmp = "";
                }
                Task.Run(() =>
                {
                    FileExtensions.AppendAllText(Path.Combine(logPath, $"{filename}.txt"), txt);
                });
            }
            //}
        }
    }
}