using System;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
using Gateway.Payment.Shared;
using Wechat.PayAPI;
using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.DependencyInjection;
namespace PaymentGateway.GatewayApp
{
    public class WechatPaymentProcessor : IPaymentProcessor
    {
        public static Microsoft.Extensions.Logging.ILogger Log = Microsoft.Extensions.Logging.Abstractions.NullLogger.Instance;
        public async Task<GenericProcessResponse> Process(PaymentOrder order)
        {
            Log.LogInformation("MicroPay", "MicroPay is processing order " + order.BillNumber);

            TradeStatusEnum tradeStatus = TradeStatusEnum.PAYERROR;
            var response = new GenericProcessResponse()
            {
                WeChatResponse = new WxPayData()
            };
            if (order.ExtraCommand == "preCreatedBillNumber")
            {
                response = await Query(order, 40, 2000);
                if (response.WeChatResponse.IsSet("trade_state") &&
                    response.WeChatResponse.GetValue("trade_state") as string == "SUCCESS")
                {
                    tradeStatus = TradeStatusEnum.SUCCESS;
                    Log.LogInformation("MicroPay TradeStatus.SUCCESS", $"The final MicroPay response is: {response.WeChatResponse.GetValue("trade_state")}");
                }
                else
                {
                    if (response.WeChatResponse.IsSet("trade_state"))
                    {
                        Log.LogInformation("MicroPay", $"The final MicroPay response is: {response.WeChatResponse.GetValue("trade_state")}");
                    }
                    else
                    {
                        Log.LogInformation("MicroPay", $"The final MicroPay response is: {response.WeChatResponse.GetValue("trade_state")}");
                    }
                }
            }
            else
            {
                response.WeChatResponse = MicroPay.Run(order, out tradeStatus);
            }

            order.TradeStatus = tradeStatus;

            Log.LogInformation("MicroPay", "The final MicroPay response is: \r\n" + response.WeChatResponse.ToXml());
            return response;
        }

        public async Task<GenericProcessResponse> Cancel(PaymentOrder order)
        {
            Log.LogInformation("MicroPay", "Micropay failure, reverse order " + order.BillNumber);

            order.TradeStatus = TradeStatusEnum.CANCELLING;

            var result = MicroPay.Cancel(order.BillNumber, (WxPayConfig)order.Config, (X509Certificate2)order.Certification);

            if (result)
            {
                Log.LogInformation("MicroPay", "Micropay Cancel Order successed, order " + order.BillNumber + " has been closed.");
                order.TradeStatus = TradeStatusEnum.CLOSED;
            }

            //try
            //{
            //    var db = new ApplicationDbContext();
            //    //update order status in DB
            //    db.Entry(order).State = EntityState.Modified;
            //    await db.SaveChangesAsync();
            //}
            //catch (Exception exx)
            //{
            //    Log.Error("MicroPay", "Error in updating order status, detail: " + exx);
            //}

            return new GenericProcessResponse();
        }

        public async Task<GenericProcessResponse> Query(PaymentOrder order)
        {
            return await Query(order, 1, 2000);
        }

        public async Task<GenericProcessResponse> Query(PaymentOrder order, int count, int interval)
        {
            Log.LogInformation("MicroPay", "Wechat OrderQuery is processing order: " + order.BillNumber);
            var result = MicroPay.RunQuery(order, count, interval);

            Log.LogInformation("MicroPay", "Wechat OrderQuery process complete, result : \r\n" + result.ToXml());

            return new GenericProcessResponse()
            {
                WeChatResponse = result
            };
        }

        public async Task<GenericProcessResponse> Return(PaymentOrder order)
        {
            Log.LogInformation("MicroPay", "MicroPay is processing refund, BillNumber = " + order.BillNumber);

            TradeStatusEnum tradeStatus;
            //var result = Refund.Run("", order.BillNumber, 
            //    order.TotalAmount.ToString(), order.NetAmount.ToString(), out tradeStatus);
            var result = Refund.Run("", order, out tradeStatus);
            order.TradeStatus = tradeStatus;

            Log.LogInformation("MicroPay", "The final MicroPay response is: \r\n" + result.ToXml());
            return new GenericProcessResponse()
            {
                WeChatResponse = result
            };
        }

        public async Task<GenericProcessResponse> UnifiedOrder(PaymentOrder order)
        {
            Log.LogInformation("UnifiedOrder", "UnifiedOrder is processing order " + order.BillNumber);

            TradeStatusEnum tradeStatus;
            var result = MicroPay.UnifiedOrder(order, out tradeStatus);
            order.TradeStatus = tradeStatus;

            Log.LogInformation("UnifiedOrder", "The final MicroPay UnifiedOrder is: \r\n" + result.ToXml());
            return new GenericProcessResponse()
            {
                WeChatResponse = result
            };
        }
    }
}