using System.Diagnostics;
using System.Text;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.AspNetCore.Mvc.Filters;
using Newtonsoft.Json;

namespace MESApplication;

/// <summary>
///     方法过滤器
/// </summary>
public class ActionFilter : IActionFilter
{
    private Stopwatch _stopwatch;

    /// <summary>
    ///     监控日志
    /// </summary>
    public static ILogger LoggerMonitor { get; set; }

    /// <summary>
    ///     错误日志
    /// </summary>
    public static ILogger LoggerError { get; set; }


    /// <summary>
    ///     方法执行前
    /// </summary>
    /// <param name="context"></param>
    /// <exception cref="NotImplementedException"></exception>
    public async void OnActionExecuting(ActionExecutingContext context)
    {
        // ErrorLog.Write("==================================================================================================================================");
        _stopwatch = new Stopwatch();
        _stopwatch.Start();
        //throw new NotImplementedException();
        if (LoggerMonitor != null)
        {
            //记录请求参数日志
            var desc = context.ActionDescriptor as ControllerActionDescriptor;
            if (desc != null)
            {
                var headers = new Dictionary<string, object>();
                var requestHeaders = context.HttpContext.Request.Headers;

                // 访问请求中的 header 信息
                foreach (var header in requestHeaders)
                    headers.Add(header.Key, header.Value);
                var requestHead = JsonConvert.SerializeObject(headers);

                var bodys = new Dictionary<string, object>();
                var actionArguments = context.ActionArguments;
                // 访问请求中的参数
                foreach (var argument in actionArguments)
                {
                    //dic.Add(argument.Key, argument.Value);
                    var parameter =
                        JsonConvert
                            .DeserializeObject<Dictionary<string, object>>(
                                argument.Value.ToString());
                    foreach (var item in parameter)
                        bodys.Add(item.Key, item.Value);
                }

                var requestBody = JsonConvert.SerializeObject(bodys);

                var logText = CreateRequestLogText(
                    context.HttpContext.Request.Method, desc.ControllerName,
                    desc.ActionName, requestHead, requestBody);
                //LoggerMonitor.LogDebug(logText);
                //ErrorLog.Write(logText);
            }
        }
    }

    public void OnActionExecuted(ActionExecutedContext context)
    {
        //throw new NotImplementedException();
        _stopwatch.Stop();
        var elaspsedMillisedconds = _stopwatch.ElapsedMilliseconds;
        var msg = "";
        //string msg = $"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} 接口执行时间：{elaspsedMillisedconds}毫秒";
        //ErrorLog.Write(msg);

        if (context.Exception != null)
            // 记录异常日志
            if (LoggerError != null)
            {
                LoggerError.LogError(context.Exception,
                    context.Exception.Message);

                ErrorLog.Write(
                    $@"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} 接口异常：{JsonConvert.SerializeObject(context.Exception)}");
                ErrorLog.Write(
                    $@"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} 异常提示信息：{JsonConvert.SerializeObject(context.Exception.Message)}");
                ErrorLog.Write(
                    "==================================================================================================================================");
            }

        if (LoggerMonitor != null)
        {
            // 记录请求结果日志
            var desc = context.ActionDescriptor as ControllerActionDescriptor;
            if (desc != null)
            {
                var rst = context.Result as ObjectResult;
                var rstValue = rst != null ? rst.Value : null;
                var logText = CreateResponseLogText(
                    context.HttpContext.Request.Method,
                    desc.ControllerName,
                    desc.ActionName,
                    rstValue);
                LoggerMonitor.LogDebug(logText);
                ErrorLog.Write(logText);
            }
        }
        //  ErrorLog.Write(msg);
        //  ErrorLog.Write("==================================================================================================================================");
    }

    /// <summary>
    ///     创建请求日志文本
    /// </summary>
    /// <param name="method"></param>
    /// <param name="controllerName"></param>
    /// <param name="actionName"></param>
    /// <param name="actionArgs"></param>
    /// <returns></returns>
    private static string CreateRequestLogText(string method,
        string controllerName, string actionName, string requestHead,
        string requestBody)
    {
        var sb = new StringBuilder();
        sb.Append(
            $"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} 请求{method}/{controllerName}/{actionName}接口，请求Head：{requestHead}\n");
        sb.Append(
            $"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} 请求{method}/{controllerName}/{actionName}接口，请求Body：{requestBody}\n");
        return sb.ToString();
    }

    /// <summary>
    ///     创建响应日志文本
    /// </summary>
    /// <param name="method"></param>
    /// <param name="controllerName"></param>
    /// <param name="actionName"></param>
    /// <param name="result"></param>
    /// <returns></returns>
    private static string CreateResponseLogText(string method,
        string controllerName, string actionName, object result)
    {
        var sb = new StringBuilder();
        sb.Append(
            $"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} 完成请求{method}/{controllerName}/{actionName}接口，返回结果：");
        if (result != null)
            sb.Append($"{JsonConvert.SerializeObject(result)}");
        else
            sb.Append("无");
        return sb.ToString();
    }
}