using Quartz;
using System;
using System.IO;
using System.Threading.Tasks;
using WIDESEA_Common.Log;

namespace WIDESEAWCS_Tasks
{
    [DisallowConcurrentExecution]
    public class LogJob : IJob
    {
        public Task Execute(IJobExecutionContext context)
        {
            try
            {
                Task.Run(() =>
                {
                    try
                    {
                        WriteLog.GetLog("LogJob").Write($"日志记录：{DateTime.Now}", "LogJob");

                        // 设置保留天数为30天
                        int saveDays = 30;

                        // 清理Log目录下的所有过期文件夹
                        CleanLogDirectory(saveDays);

                        Thread.Sleep(1000 * 10);
                    }
                    catch (Exception ex)
                    {
                        WriteLog.GetLog("LogJob").Write($"日志清理出错：{ex.Message}", "LogJob");
                    }
                });
            }
            catch (Exception ex)
            {
                Console.Out.WriteLine(nameof(LogJob) + ":" + ex.Message);
            }

            return Task.CompletedTask;
        }

        /// <summary>
        /// 清理Log目录下的所有过期日志文件夹
        /// </summary>
        /// <param name="saveDays">保留天数</param>
        private static void CleanLogDirectory(int saveDays)
        {
            // 获取Log目录路径
            var logBasePath = Path.Combine(Environment.CurrentDirectory, "Log");

            if (!Directory.Exists(logBasePath))
            {
                WriteLog.GetLog("LogJob").Write($"Log目录不存在：{logBasePath}", "LogJob");
                return;
            }

            var nowTime = DateTime.Now;
            var cutoffDate = nowTime.AddDays(-saveDays);

            WriteLog.GetLog("LogJob").Write($"开始清理日志，保留天数：{saveDays}，截止日期：{cutoffDate:yyyy-MM-dd}", "LogJob");

            // 获取Log目录下的所有子目录
            var allSubDirs = Directory.GetDirectories(logBasePath, "*", SearchOption.AllDirectories);

            foreach (var dirPath in allSubDirs)
            {
                try
                {
                    // 获取文件夹名
                    var dirName = Path.GetFileName(dirPath);

                    // 尝试解析为日期（支持多种格式）
                    if (TryParseDateFolder(dirName, out DateTime folderDate))
                    {
                        // 判断是否过期
                        if (folderDate < cutoffDate)
                        {
                            WriteLog.GetLog("LogJob").Write($"删除过期日志文件夹：{dirPath}，日期：{folderDate:yyyy-MM-dd}", "LogJob");

                            // 递归删除文件夹及其内容
                            Directory.Delete(dirPath, true);
                        }
                        else
                        {
                            WriteLog.GetLog("LogJob").Write($"保留日志文件夹：{dirPath}，日期：{folderDate:yyyy-MM-dd}", "LogJob");
                        }
                    }
                }
                catch (Exception ex)
                {
                    WriteLog.GetLog("LogJob").Write($"处理文件夹 {dirPath} 时出错：{ex.Message}", "LogJob");
                }
            }

            WriteLog.GetLog("LogJob").Write($"日志清理完成", "LogJob");
        }

        /// <summary>
        /// 尝试解析日期文件夹名称
        /// </summary>
        /// <param name="folderName">文件夹名称</param>
        /// <param name="date">解析出的日期</param>
        /// <returns>是否成功解析</returns>
        private static bool TryParseDateFolder(string folderName, out DateTime date)
        {
            // 支持的日期格式
            string[] dateFormats =
            {
                "yyyy-MM-dd",   // 2025-12-07
                "yyyyMMdd",     // 20251207
                "yyyy_MM_dd",   // 2025_12_07
                "yyyy.MM.dd",   // 2025.12.07
                "yyyy年MM月dd日" // 2025年12月07日
            };

            // 尝试解析日期
            bool success = DateTime.TryParseExact(
                folderName,
                dateFormats,
                System.Globalization.CultureInfo.InvariantCulture,
                System.Globalization.DateTimeStyles.None,
                out date
            );

            return success;
        }
    }
}