using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Text;

namespace Shentun.WebApi.Service
{
    public class WebApiActionFilterAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuted(ActionExecutedContext context)
        {
            //Console.WriteLine("WebApiActionFilter.OnActionExecuted");
            if (context.Result != null)
            {
                if (context.Result is ObjectResult)
                {
                    
                    var result = context.Result as ObjectResult;
                    if (!(result is IReturnValue))
                    {
                        if (result.StatusCode == StatusCodes.Status404NotFound)
                        {
                            context.Result = new OkObjectResult(ReturnValue.CreateNotFoundInstance());
                        }
                        else if(result.StatusCode != StatusCodes.Status200OK && result.StatusCode!=null)
                        {
                            context.Result = new OkObjectResult(ReturnValue.CreateErrorInstance(result.Value.ToString()));
                        }
                        else
                        {
                            context.Result = new OkObjectResult(ReturnValue.CreateSuccessInstance(result.Value));
                        }

                    }
                }
                else if (context.Result is EmptyResult)
                {
                    context.Result = new OkObjectResult(ReturnValue.CreateSuccessInstance());
                }
                else if (context.Result is ContentResult)
                {
                    var result = context.Result as ContentResult;
                    context.Result = new OkObjectResult(ReturnValue.CreateSuccessInstance(result.Content));
                }
                else if (context.Result is BadRequestResult)
                {
                    var result = context.Result as BadRequestResult;
                    context.Result = new OkObjectResult(ReturnValue.CreateErrorInstance("BadRequestResult"));
                }
                else if (context.Result is NoContentResult)
                {
                    var result = context.Result as NoContentResult;
                    context.Result = new OkObjectResult(ReturnValue.CreateErrorInstance("NoContentResult"));
                }
                else if (context.Result is NotFoundResult)
                {
                    var result = context.Result as NotFoundResult;
                    context.Result = new OkObjectResult(ReturnValue.CreateNotFoundInstance());
                }
                else if (context.Result is FileStreamResult)
                {
                    //直接返回
                    //var result = context.Result as FileStreamResult;
                    //context.Result = new OkObjectResult(result);
                }
                else if (context.Result is FileContentResult)
                {
                    //直接返回
                    //var result = context.Result as FileContentResult;
                    //context.Result = new OkObjectResult(result);
                }
                else
                {
                    //context.Result = new OkObjectResult(ReturnValue.CreateErrorInstance(context.Result));
                    //throw new Exception($"未经处理的Result类型：{ context.Result.GetType().Name}");
                }
            }

            base.OnActionExecuted(context);
            

        }

        public override void OnActionExecuting(ActionExecutingContext context)
        {
            //Console.WriteLine("WebApiActionFilter.OnActionExecuting");
            //context.Result = ReturnValue<context.Result>.CreateSuccessReturnValue(context.Result)
        }

        public override void OnResultExecuting(ResultExecutingContext context)
        {
            //Console.WriteLine("WebApiActionFilter.OnResultExecuting");
        }

        public override void OnResultExecuted(ResultExecutedContext context)
        {
            //Console.WriteLine("WebApiActionFilter.OnResultExecuted");
            
        }

    }
}