using BuddyFinance.MEF.Concepts;
using BuddyFinance.MEF.Contracts;
using BuddyFinance.MEF.Enums;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using BuddyFinance.Integration.Transunion.Mappers;
using BuddyFinance.Model;
using BuddyFinance.Integration.Models.Enums;
using System.IO;
using System.Xml;
using System.Xml.Serialization;

namespace BuddyFinance.Integration.Transunion
{
    [Export(typeof(ICreditBureauIntegrator))]
    public class Integrator: ICreditBureauIntegrator
    {
        public CreditBureauEnum CreditBureau => CreditBureauEnum.TransUnion;

        public GetCustomerCreditProfileResult GetCustomerCreditProfile(GetCustomerCreditProfileRequest request)
        {
            
            using(var db = new BuddyFinanceDBEntities())
            using (var client = new TransUnionService.ConsumerSoapClient())
            {
                var profile = db.Profiles.FirstOrDefault(i => i.IdentificationNumber == request.IdentityNumber);

                var buddyFinance = db.Profiles.FirstOrDefault(i => i.Lender == null && i.Borrower != null);

                if (profile == null)
                    return new GetCustomerCreditProfileResult
                    {
                        ErrorCode = 1,
                        Message = "Customer profile not found in Buddy Finance."
                    };

                
                var enquiry = profile.ToBureauEnquiry01(buddyFinance, db.GlobalSetups.FirstOrDefault());

                var r = new RequestLog
                {
                    Id = 0,
                    ResponseMessage = "",
                    ResponseCode = "",
                    ResponseXML = "",
                    RequestXML = GetXMLFromObject(enquiry),
                    RequestType = RequestTypeEnum.CreditBureau.ToString(),
                    Timestamp = DateTime.Now
                };

                db.RequestLogs.Add(r);
                db.SaveChanges();

                try
                {
                    var response = client.ProcessRequestTrans01(enquiry);
                    r.ResponseXML = GetXMLFromObject(response);
                    r.ResponseCode = response.ErrorCode;
                    r.ResponseMessage = response.ErrorMessage;

                    db.Entry(r).State = System.Data.Entity.EntityState.Modified;
                    db.SaveChanges();

                    return response.ToCustomerCreditProfile();
                }
                catch(Exception ex)
                {
                    r.ResponseXML = GetXMLFromObject(ex);
                    r.ResponseCode = "EXCEPTION";
                    r.ResponseMessage = ex.Message;

                    db.Entry(r).State = System.Data.Entity.EntityState.Modified;
                    db.SaveChanges();

                    throw ex;
                }
            }
        }

         public string GetXMLFromObject(object o)
        {
            StringWriter sw = new StringWriter();
            XmlTextWriter tw = null;
            try
            {
                XmlSerializer serializer = new XmlSerializer(o.GetType());
                tw = new XmlTextWriter(sw);
                serializer.Serialize(tw, o);
            }
            catch (Exception ex)
            {
                //Handle Exception Code
            }
            finally
            {
                sw.Close();
                if (tw != null)
                {
                    tw.Close();
                }
            }
            return sw.ToString();
        }

        public UpdateCustomerCreditProfileResult UpdateCustomerCreditProfile(UpdateCustomerCreditProfileRequest request)
        {
            return new UpdateCustomerCreditProfileResult();
        }
    }
}