using System;
using System.Collections.Generic;
using System.Configuration;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using EMIS.CommonLogic.SystemServices;
using EMIS.Utility;
using EMIS.ViewModel.WechatModel;
using EMIS.Utility.OnlinePay;
using Senparc.Weixin;
using Senparc.Weixin.TenPay;
using Senparc.Weixin.TenPay.V3;
using Senparc.Weixin.MP.Entities.Request;
//using Senparc.Weixin.Exceptions;

namespace EMIS.Web.Controllers
{
    [Authorization]
    public class WeixinController : Controller
    {
        public IWechatPayServices WechatPayServices { get; set; }

        [AllowAnonymous]
        public ActionResult Index()
        {
            string url = new Uri(this.Request.Url, "../" + ConfigurationManager.AppSettings["MobileAppPath"]).AbsoluteUri + "?v=" + DateTime.Now.Ticks.ToString();
            return Redirect(WechatHelper.GetBaseAuthorizeUrl(url));
        }

        #region 支付
        public ActionResult NativePay(Guid examinationRegistrationID, decimal fee, string feeTypeName)
        {
            var nativePayView = new NativePayView();

            nativePayView.ExaminationRegistrationID = examinationRegistrationID;
            nativePayView.Fee = fee;
            nativePayView.FeeTypeName = feeTypeName;

            var lastOrder = this.WechatPayServices.GetLastOrder(examinationRegistrationID);
            if (lastOrder != null && lastOrder.OrderID != null)
            {
                this.WechatPayServices.UpdateWeChatPay(new List<OrderQueryResult> { WechatHelper.OrderQuery(lastOrder.OrderID) });
            }
            lastOrder = this.WechatPayServices.GetLastOrder(examinationRegistrationID);
            if (lastOrder != null && lastOrder.OrderID != null)
            {
                nativePayView.ProductID = lastOrder.OrderID;
            }
            else
            {
                nativePayView.ProductID = WechatPayServices.GetProductId();
            }            

            return View(nativePayView);
        }

        public ActionResult PayQRCode(Guid examinationRegistrationID, string productId, decimal fee, string feeTypeName)
        {
            var lastOrder = this.WechatPayServices.GetLastOrder(examinationRegistrationID);

            if (lastOrder != null && lastOrder.OrderID != null)
            {
                try
                {
                    if (lastOrder.PayUrl != null)
                    {
                        var memoryStream = new MemoryStream();
                        var qrcodeImage = QRCodeHelper.GenerateQRCode(lastOrder.PayUrl);
                        qrcodeImage.Save(memoryStream, ImageFormat.Png);

                        return new FileContentResult(memoryStream.GetBuffer(), "image/png");
                    }
                    else
                    {
                        WechatHelper.CloseOrder(lastOrder.OrderID);
                    }
                }
                catch (Exception ex)
                {
                    return new FileContentResult(new byte[0], "image/png");
                }
            }
            WechatPayServices.NewPayList(examinationRegistrationID, productId);

            try
            {
                string payUrl;
                var content = WechatHelper.GetPayQRCode(productId, fee, feeTypeName, out payUrl);
                WechatPayServices.SaveUrl(examinationRegistrationID, payUrl);

                return content;
            }
            catch (Exception ex)
            {
                return new FileContentResult(new byte[0], "image/png");
            }
        }

        public ActionResult PayNotify()
        {
            try
            {
                var payNotifyView = WechatHelper.PayNotify();

                try
                {
                    //向微信发送请求，根据返回结果修改报名缴费状态
                    OrderQueryResult query = WechatHelper.OrderQuery(payNotifyView.OrderID);
                    List<OrderQueryResult> queryList = new List<OrderQueryResult>();
                    queryList.Add(query);
                    WechatPayServices.UpdateWeChatPay(queryList);
                    //WechatPayServices.UpdateTransactionID(payNotifyView.OrderID, payNotifyView.WechatOrderID);
                    //给财付通系统发送成功信息，财付通系统收到此结果后不再进行后续通知
                    return WechatHelper.PayNotifySuccess;
                }
                catch (Exception ex)
                {
                    return WechatHelper.PayNotifyFail("支付失败，商户内部数据库更新出错。");
                }
            }
            catch (Exception ex)
            {
                return WechatHelper.PayNotifyFail(ex.Message);
            }
        }

        [HttpPost]
        public ActionResult CheckOrderScanned(string productId)
        {
            try
            {
                var order = WechatHelper.OrderQuery(productId);
                string[] payingStatus = new string[] { "NOTPAY" };

                if (!payingStatus.Contains(order.trade_state))
                {
                    return Json(true);
                }
                else
                {
                    return Json(false);
                }
            }
            catch
            {
                return Json(false);
            }
        }
        #endregion

        #region 退款
        public ActionResult RefundNotify()
        {
            try
            {
                var refundNotifyView = WechatHelper.RefundNotify();
                WechatPayServices.UpdateRefund(refundNotifyView.OrderID, refundNotifyView.WechatRefundOrderID, refundNotifyView.Fee);
                //给财付通系统发送成功信息，财付通系统收到此结果后不再进行后续通知
                return WechatHelper.PayNotifySuccess;
            }
            catch (Exception ex)
            {
                return WechatHelper.PayNotifyFail("支付失败，商户内部数据库更新出错。");
            }
        }
        #endregion
    }
}