/***********************************************************************
 *            Project: baifenBinfa.Net                                     *
 *                Web: https://baifenBinfa.com                             *
 *        ProjectName: 百分兵法管理系统                               *
 *             Author:                                        *
 *              Email:                               *
 *           Versions: 1.0                                             *
 *         CreateTime: 2020-02-03 23:30:52
 *           FileName: RequRespLogMildd
 *   ClassDescription:
 ***********************************************************************/


using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using CoreCms.Net.Configuration;
using CoreCms.Net.Loging;
using CoreCms.Net.Utility.Extensions;
using Microsoft.AspNetCore.Http;

namespace CoreCms.Net.Middlewares
{
    /// <summary>
    /// 中间件
    /// 记录请求和响应数据
    /// </summary>
    public class RequRespLogMildd
    {
        /// <summary>
        ///
        /// </summary>
        private readonly RequestDelegate _next;
        /// <summary>
        ///
        /// </summary>
        /// <param name="next"></param>
        public RequRespLogMildd(RequestDelegate next)
        {
            _next = next;
        }

        public async Task InvokeAsync(HttpContext context)
        {
            if (AppSettingsConstVars.MiddlewareRequestResponseLogEnabled)
            {
                // 过滤，只有接口
                if (context.Request.Path.Value != null && (context.Request.Path.Value.Contains("api") || context.Request.Path.Value.Contains("Api")))
                {
                    context.Request.EnableBuffering();
                    Stream originalBody = context.Response.Body;
                    try
                    {
                        // 存储请求数据
                        await RequestDataLog(context);

                        await using var ms = new MemoryStream();
                        context.Response.Body = ms;

                        await _next(context);

                        // 存储响应数据
                        ResponseDataLog(ms);

                        ms.Position = 0;
                        await ms.CopyToAsync(originalBody);
                    }
                    catch (Exception)
                    {
                        // 记录异常
                        //ErrorLogData(context.Response, ex);
                    }
                    finally
                    {
                        context.Response.Body = originalBody;
                    }
                }
                else
                {
                    await _next(context);
                }
            }
            else
            {
                await _next(context);
            }
        }

        private static async Task RequestDataLog(HttpContext context)
        {
            var request = context.Request;
            var sr = new StreamReader(request.Body);

            var content = $" QueryData:{request.Path + request.QueryString}\r\n BodyData:{await sr.ReadToEndAsync()}";

            if (!string.IsNullOrEmpty(content))
            {
                Parallel.For(0, 1, _ =>
                {
                    LogLockHelper.OutSql2Log("RequestResponseLog", "RequestResponseLog" + DateTime.Now.ToString("yyyy-MM-dd-HH"), new[] { "Request Data:", content });

                });

                request.Body.Position = 0;
            }
        }

        private static void ResponseDataLog(Stream ms)
        {
            ms.Position = 0;
            var responseBody = new StreamReader(ms).ReadToEnd();
            if (!string.IsNullOrEmpty(responseBody))
            {
                Parallel.For(0, 1, _ =>
                {
                    LogLockHelper.OutSql2Log("RequestResponseLog", "RequestResponseLog" + DateTime.Now.ToString("yyyy-MM-dd-HH"), new[] { "Response Data:", responseBody });
                });
            }
        }
    }
}