using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Utility.Entity;

namespace Utility
{
    public class ApiResponseActionFilter: IAsyncActionFilter
    {
        public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
        {
            // 在执行动作之前的逻辑
            var resultContext = await next(); // 执行动作方法并获取执行结果

            // 在执行动作之后的逻辑
            if (resultContext.Result is ObjectResult objectResult)
            {
                var apiResponse = new ApiResponse<object>(
                    context.HttpContext.Response.StatusCode,
                    context.HttpContext.Response.StatusCode == 200 ? "请求成功" : "错误",
                    objectResult.Value
                );

                var json = JsonConvert.SerializeObject(apiResponse);
                context.HttpContext.Response.ContentType = "application/json";
                context.HttpContext.Response.ContentLength = Encoding.UTF8.GetByteCount(json);

                await context.HttpContext.Response.WriteAsync(json);
            }
        }
    }
}