using EntrustSettle.Common.Helper;
using Newtonsoft.Json;
using Serilog;
using System;
using System.IO;
using System.Linq;
using System.Threading;

namespace EntrustSettle.Common.LogHelper
{
    public class LogLock
    {
        static ReaderWriterLockSlim LogWriteLock = new ReaderWriterLockSlim();
        static int WritedCount = 0;
        static int FailedCount = 0;
        static string _contentRoot = string.Empty;

        public LogLock(string contentPath)
        {
            _contentRoot = contentPath;
        }

        public static void OutLogAOP(string prefix, string traceId, string[] dataParas, bool IsHeader = true)
        {
            string AppSetingNodeName = "AppSettings";
            string AppSetingName = "LogAOP";
            switch (prefix)
            {
                // AOP中使用
                case "AOPLog":
                    AppSetingName = "LogAOP";
                    break;
                case "AOPLogEx":
                    AppSetingName = "LogAOP";
                    break;

                // 中间件中使用
                case "RequestIpInfoLog":
                    AppSetingNodeName = "Middleware";
                    AppSetingName = "IPLog";
                    break;
                case "RecordAccessLogs":
                    AppSetingNodeName = "Middleware";
                    AppSetingName = "RecordAccessLogs";
                    break;
                case "RequestResponseLog":
                    AppSetingNodeName = "Middleware";
                    AppSetingName = "RequestResponseLog";
                    break;

                // 暂时用不到
                case "SqlLog":
                    AppSetingName = "SqlAOP";
                    break;
                default:
                    break;
            }

            if (AppSettings.app(new string[] { AppSetingNodeName, AppSetingName, "Enabled" }).ObjToBool())
            {
                if (AppSettings.app(new string[] { AppSetingNodeName, AppSetingName, "LogToDB", "Enabled" }).ObjToBool())
                {
                    OutSql2LogToDB(prefix, traceId, dataParas, IsHeader);
                }

                if (AppSettings.app(new string[] { AppSetingNodeName, AppSetingName, "LogToFile", "Enabled" }).ObjToBool())
                {
                    OutSql2LogToFile(prefix, traceId, dataParas, IsHeader);
                }
            }
        }

        public static void OutSql2LogToFile(string prefix, string traceId, string[] dataParas, bool IsHeader = true, bool isWrt = false)
        {
            try
            {
                //设置读写锁为写入模式独占资源，其他写入请求需要等待本次写入结束之后才能继续写入
                //注意：长时间持有读线程锁或写线程锁会使其他线程发生饥饿 (starve)。 为了得到最好的性能，需要考虑重新构造应用程序以将写访问的持续时间减少到最小。
                //      从性能方面考虑，请求进入写入模式应该紧跟文件操作之前，在此处进入写入模式仅是为了降低代码复杂度
                //      因进入与退出写入模式应在同一个try finally语句块内，所以在请求进入写入模式之前不能触发异常，否则释放次数大于请求次数将会触发异常
                LogWriteLock.EnterWriteLock();

                var folderPath = Path.Combine(_contentRoot, "Log");
                if (!Directory.Exists(folderPath))
                {
                    Directory.CreateDirectory(folderPath);
                }

                //string logFilePath = Path.Combine(path, $@"{filename}.log");
                var logFilePath = FileHelper.GetAvailableFileWithPrefixOrderSize(folderPath, prefix);
                switch (prefix)
                {
                    case "AOPLog":
                        AOPLogInfo apiLogAopInfo = JsonConvert.DeserializeObject<AOPLogInfo>(dataParas[1]);
                        //记录被拦截方法信息的日志信息
                        var dataIntercept = "" +
                                            $"【操作时间】：{apiLogAopInfo.RequestTime}\r\n" +
                                            $"【当前操作用户】：{apiLogAopInfo.OpUserName} \r\n" +
                                            $"【当前执行方法】：{apiLogAopInfo.RequestMethodName} \r\n" +
                                            $"【携带的参数有】： {apiLogAopInfo.RequestParamsName} \r\n" +
                                            $"【携带的参数JSON】： {apiLogAopInfo.RequestParamsData} \r\n" +
                                            $"【响应时间】：{apiLogAopInfo.ResponseIntervalTime}\r\n" +
                                            $"【执行完成时间】：{apiLogAopInfo.ResponseTime}\r\n" +
                                            $"【执行完成结果】：{apiLogAopInfo.ResponseJsonData}\r\n";
                        dataParas = new string[] { dataIntercept };
                        break;
                    case "AOPLogEx":
                        AOPLogExInfo apiLogAopExInfo = JsonConvert.DeserializeObject<AOPLogExInfo>(dataParas[1]);
                        var dataInterceptEx = "" +
                                              $"【操作时间】：{apiLogAopExInfo.ApiLogAopInfo.RequestTime}\r\n" +
                                              $"【当前操作用户】：{apiLogAopExInfo.ApiLogAopInfo.OpUserName} \r\n" +
                                              $"【当前执行方法】：{apiLogAopExInfo.ApiLogAopInfo.RequestMethodName} \r\n" +
                                              $"【携带的参数有】： {apiLogAopExInfo.ApiLogAopInfo.RequestParamsName} \r\n" +
                                              $"【携带的参数JSON】： {apiLogAopExInfo.ApiLogAopInfo.RequestParamsData} \r\n" +
                                              $"【响应时间】：{apiLogAopExInfo.ApiLogAopInfo.ResponseIntervalTime}\r\n" +
                                              $"【执行完成时间】：{apiLogAopExInfo.ApiLogAopInfo.ResponseTime}\r\n" +
                                              $"【执行完成结果】：{apiLogAopExInfo.ApiLogAopInfo.ResponseJsonData}\r\n" +
                                              $"【执行完成异常信息】：方法中出现异常：{apiLogAopExInfo.ExMessage}\r\n" +
                                              $"【执行完成异常】：方法中出现异常：{apiLogAopExInfo.InnerException}\r\n";
                        dataParas = new string[] { dataInterceptEx };
                        break;
                }

                var now = DateTime.Now;
                string logContent = String.Join("\r\n", dataParas);
                if (IsHeader)
                {
                    logContent = (
                        "--------------------------------\r\n" +
                        DateTime.Now + "|\r\n" +
                        String.Join("\r\n", dataParas) + "\r\n"
                    );
                }
                else
                {
                    logContent = (
                        dataParas[1] + ",\r\n"
                    );
                }

                //if (logContent.IsNotEmptyOrNull() && logContent.Length > 500)
                //{
                //    logContent = logContent.Substring(0, 500) + "\r\n";
                //}
                if (isWrt)
                {
                    File.WriteAllText(logFilePath, logContent);
                }
                else
                {
                    File.AppendAllText(logFilePath, logContent);
                }

                WritedCount++;
            }
            catch (Exception e)
            {
                Console.Write(e.Message);
                FailedCount++;
            }
            finally
            {
                //退出写入模式，释放资源占用
                //注意：一次请求对应一次释放
                //      若释放次数大于请求次数将会触发异常[写入锁定未经保持即被释放]
                //      若请求处理完成后未释放将会触发异常[此模式不下允许以递归方式获取写入锁定]
                LogWriteLock.ExitWriteLock();
            }
        }

        public static void OutSql2LogToDB(string prefix, string traceId, string[] dataParas, bool IsHeader = true)
        {
            dataParas = dataParas.Skip(1).ToArray();

            string logContent = String.Join("", dataParas);
            if (IsHeader)
            {
                logContent = (String.Join("", dataParas));
            }

            switch (prefix)
            {
                //DEBUG | INFO | WARN | ERROR | FATAL
                case "AOPLog":
                    Log.Information(logContent);
                    break;
                case "AOPLogEx":
                    Log.Error(logContent);
                    break;
                case "RequestIpInfoLog":
                    //TODO 是否需要Debug输出？
                    Log.Information(logContent);
                    break;
                case "RecordAccessLogs":
                    //TODO 是否需要Debug输出？
                    Log.Information(logContent);
                    break;
                case "RequestResponseLog":
                    //TODO 是否需要Debug输出？
                    Log.Information(logContent);
                    break;
                case "SqlLog":
                    Log.Information(logContent);
                    break;
                default:
                    break;
            }
        }
    }

    public enum ReadType
    {
        /// <summary>
        /// 精确查找一个
        /// </summary>
        Accurate,

        /// <summary>
        /// 指定前缀，模糊查找全部
        /// </summary>
        Prefix,

        /// <summary>
        /// 指定前缀，最新一个文件
        /// </summary>
        PrefixLatest
    }
}