using ATS.NonCustodial.Application.Contracts.Interfaces.Logs.OprationLog;
using ATS.NonCustodial.Application.Contracts.Interfaces.Logs.OprationLog.Input;
using ATS.NonCustodial.AuditLogging.AuditLoggings.Services;
using ATS.NonCustodial.Shared.Common.UnifiedResults;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System.Diagnostics;
using System.Reflection;

namespace ATS.NonCustodial.AdminUi.Helpers.Logs
{
    /// <summary>
    /// 控制器操作日志记录 ==> 操作日志处理
    /// </summary>
    /// Author:mxg
    /// CreatedTimed:2022-05-18 09:46 AM
    public class LogHandler : ILogHandler
    {
        #region Identity

        private readonly ILogger _logger;
        private readonly ApiHelper _apiHelper;
        private readonly IOperationLogService _operationLogService;
        private readonly IAuditEventLogger _auditEventLogger;

        public LogHandler(
            ILogger<LogHandler> logger,
            ApiHelper apiHelper,
            IOperationLogService operationLogService,
            IAuditEventLogger auditEventLogger
        )
        {
            _logger = logger;
            _apiHelper = apiHelper;
            _operationLogService = operationLogService;
            _auditEventLogger = auditEventLogger;
        }

        #endregion Identity

        /// <summary>
        ///
        /// </summary>
        /// <param name="context"></param>
        /// <param name="next"></param>
        /// <returns></returns>
        public async Task LogAsync(ActionExecutingContext context, ActionExecutionDelegate next)
        {
            var sw = new Stopwatch();
            sw.Start();
            //调用接口
            var actionExecutedContext = await next();
            sw.Stop();

            try
            {
                //接口Type
                var controllerType = (context.ActionDescriptor as ControllerActionDescriptor)?.ControllerTypeInfo.AsType().GetSummary();

                //方法信息
                var controllerAction = (context.ActionDescriptor as ControllerActionDescriptor)?.MethodInfo.GetSummary();

                var input = new OprationLogAddInput
                {
                    ApiLabel = $"{controllerType}/{controllerAction}".Trim('/'),
                    ApiMethod = context.HttpContext.Request.Method.ToLower(),
                    ApiPath = context.ActionDescriptor.AttributeRouteInfo?.Template?.ToLower(),
                    ElapsedMilliseconds = sw.ElapsedMilliseconds,
                    Params = JsonConvert.SerializeObject(context.ActionArguments)
                };

                if (actionExecutedContext.Result is ObjectResult { Value: IResultOutput res })
                {
                    input.Status = res.Success;
                    input.Msg = res.Msg;
                }

                #region 设置参数

                //switch (context.HttpContext.Request.Method)
                //{
                //    case "GET":
                //    case "DELETE":
                //        input.Params = context.HttpContext.Request.Path;
                //        break;
                //    case "PUT":
                //    case "POST":
                //        context.HttpContext.Request.EnableBuffering();
                //        context.HttpContext.Request.Body.Position = 0;
                //        StreamReader reader = new StreamReader(context.HttpContext.Request.Body, Encoding.UTF8);
                //        input.Params = reader.ReadToEndAsync().GetAwaiter().GetResult();
                //        context.HttpContext.Request.Body.Position = 0;
                //        break;
                //    default: break;
                //}
                //if (input.Params is { Length: > 1024 })
                //{
                //    input.Params = input.Params.Substring(0, 1021) + "...";
                //}

                #endregion 设置参数

                #region 设置返回值

                try
                {
                    if (actionExecutedContext.Exception != null && !actionExecutedContext.ExceptionHandled)
                    {
                        input.Exception = actionExecutedContext.Exception.StackTrace;
                    }
                }
                catch (Exception ex)
                {
                    input.Exception = ex.StackTrace;
                    throw;
                }
                finally
                {
                    if (input.Exception is { Length: > 2048 })
                    {
                        input.Exception = input.Exception.Substring(0, 2045) + "...";
                    }

                    if (actionExecutedContext != null)
                    {
                        input.Result = actionExecutedContext.Result switch
                        {
                            ObjectResult objectResult => JsonConvert.SerializeObject(objectResult.Value),
                            JsonResult jsonResult => JsonConvert.SerializeObject(jsonResult.Value),
                            ContentResult contentResult => contentResult.Content,
                            _ => input.Result
                        };
                        if (input.Result is { Length: > 2048 })
                        {
                            input.Result = input.Result.Substring(0, 2045) + "...";
                        }
                    }
                }

                #endregion 设置返回值

                //接口名称
                //input.ApiLabel = _apiHelper.GetApis().FirstOrDefault(a => a.Path == input.ApiPath)?.Label;

                //添加操作日志
                await _operationLogService.AddAsync(input);

                #region 添加审计日志

                //var apiAuditLog = new CustomizedLogEvent()
                //{
                //    Category = nameof(CustomizedLogEvent),
                //    SubjectType = AuditSubjectTypes.machine,
                //    SubjectName = Environment.MachineName,
                //    SubjectIdentifier = Environment.MachineName,
                //    Action = new { Method = input.ApiPath, Class = context.Controller.ToString() }
                //};
                //await _auditEventLogger.LogEventAsync(apiAuditLog, options =>
                //{
                //    options.UseDefaultSubject = false;
                //    options.UseDefaultAction = false;
                //});

                #endregion 添加审计日志
            }
            catch (Exception ex)
            {
                _logger.LogError("操作日志插入异常：{@ex}", ex);
            }
        }
    }
}