using System.Text;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Senparc.NeuChar.MessageHandlers;

namespace SSCMS.Web.Controllers.Wx
{
    public partial class IndexController
    {
        public class FixWeixinBugWeixinResult : ContentResult
        {
            //private string _content;
            protected IMessageHandlerDocument _messageHandlerDocument;

            /// <summary>
            /// 这个类型只用于特殊阶段：目前IOS版本微信有换行的bug，\r\n会识别为2行
            /// </summary>
            public FixWeixinBugWeixinResult(IMessageHandlerDocument messageHandlerDocument)
            {
                _messageHandlerDocument = messageHandlerDocument;
            }

            public FixWeixinBugWeixinResult(string content)
            {
                //_content = content;
                base.Content = content;
            }


            public new string Content
            {
                get
                {
                    if (base.Content != null)
                    {
                        return base.Content;
                    }

                    if (_messageHandlerDocument != null)
                    {
                        //var textResponseMessag = _messageHandlerDocument.TextResponseMessage;
                        if (_messageHandlerDocument.TextResponseMessage != null)
                        {
                            return _messageHandlerDocument.TextResponseMessage.Replace("\r\n", "\n");
                        }

                        //if (_messageHandlerDocument.TextResponseMessage.Equals(String.Empty))
                        //{
                        //    //无需响应，开发者返回了ResponseNoResponse
                        //    return null;
                        //}

                        //if (_messageHandlerDocument.ResponseDocument != null)
                        //{
                        //    //返回XML响应信息
                        //    return _messageHandlerDocument.TextResponseMessage.Replace("\r\n", "\n");
                        //}
                        //else
                        //{
                        //    //返回XML响应信息或用户指定的文本内容
                        //    return _messageHandlerDocument.TextResponseMessage;
                        //}
                    }
                    return null;
                }
                set { base.Content = value; }
            }

#if NET45
        public override void ExecuteResult(ControllerContext context)
        {
            var content = this.Content;

            if (content == null)
            {
                //使用IMessageHandler输出
                if (_messageHandlerDocument == null)
                {
                    throw new Senparc.Weixin.Exceptions.WeixinException("执行WeixinResult时提供的MessageHandler不能为Null！", null);
                }
                var finalResponseDocument = _messageHandlerDocument.FinalResponseDocument;


                if (finalResponseDocument == null)
                {
                    //throw new Senparc.Weixin.MP.WeixinException("FinalResponseDocument不能为Null！", null);
                }
                else
                {
                    content = finalResponseDocument.ToString();
                }
            }

            context.HttpContext.Response.ClearContent();
            context.HttpContext.Response.ContentType = "text/xml";
            content = (content ?? "").Replace("\r\n", "\n");

            var bytes = Encoding.UTF8.GetBytes(content);
            context.HttpContext.Response.OutputStream.Write(bytes, 0, bytes.Length);
        }

#else
            public override async Task ExecuteResultAsync(ActionContext context)
            {
                var content = this.Content;

                if (content == null)
                {
                    //使用IMessageHandler输出
                    if (_messageHandlerDocument == null)
                    {
                        throw new Senparc.Weixin.Exceptions.WeixinException("执行WeixinResult时提供的MessageHandler不能为Null！", null);
                    }
                    var finalResponseDocument = _messageHandlerDocument.FinalResponseDocument;


                    if (finalResponseDocument == null)
                    {
                        //throw new Senparc.Weixin.MP.WeixinException("FinalResponseDocument不能为Null！", null);
                    }
                    else
                    {
                        content = finalResponseDocument.ToString();
                    }
                }

                context.HttpContext.Response.ContentType = "text/xml";
                content = (content ?? "").Replace("\r\n", "\n");

                var bytes = Encoding.UTF8.GetBytes(content);
                //context.HttpContext.Response.Body.Seek(0, SeekOrigin.Begin);
                await context.HttpContext.Response.Body.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);

                // return base.ExecuteResultAsync(context);
            }
#endif
        }
    }
}
