using System.Xml.Linq;
using CRIF.ACTion.Common.Parsers;
using Landmark.OLA.Models.Loan;

namespace CRIF.ACTion.Loan
{
    public class DealershipResponseParser : IResponseParser<DealershipAuthRequest>
    {
        public DealershipAuthRequest Parse(XElement xdoc)
        {
            try
            {
                var application = xdoc.Descendants(Common.CrifNamespaces.App + "application").GetEnumerator();
                application.MoveNext();
                
                if(application.Current == null)
                {
                    return null;
                }

                var applicationId = application.Current.Attribute(Common.CrifNamespaces.App + "applicationID")?.Value;

                var primaryBorrower = xdoc.Descendants(Common.CrifNamespaces.App + "primaryBorrower").GetEnumerator();
                primaryBorrower.MoveNext();
                var primaryBorrowerRef = primaryBorrower.Current.Attribute(Common.CrifNamespaces.Common + "idRef").Value;

                string applicantLastName = null;
                var individual = xdoc.Descendants(Common.CrifNamespaces.Common + "individual").GetEnumerator();
                while(individual.MoveNext())
                {
                    if(individual.Current.Attribute(Common.CrifNamespaces.Common + "id").Value.Equals(primaryBorrowerRef))
                    {
                        applicantLastName = individual.Current.Attribute(Common.CrifNamespaces.Common + "lastName")?.Value;
                        break;
                    }
                }

                if (applicantLastName == null)
                {
                    // Check for Company as primary applicant
                    var company = xdoc.Descendants(Common.CrifNamespaces.Common + "company").GetEnumerator();
                    while (company.MoveNext())
                    {
                        if (company.Current.Attribute(Common.CrifNamespaces.Common + "id").Value.Equals(primaryBorrowerRef))
                        {
                            applicantLastName = company.Current.Attribute(Common.CrifNamespaces.Common + "tradeName").Value;
                            break;
                        }
                    }
                }

                /*if (applicantLastName == null)
                {
                    // Check for DBA/Trust Name as primary applicant
                    var company = xdoc.Descendants(Common.CrifNamespaces.Common + "company").GetEnumerator();
                    while (company.MoveNext())
                    {
                        if (company.Current.Attribute(Common.CrifNamespaces.Common + "id").Value.Equals(primaryBorrowerRef))
                        {
                            applicantLastName = company.Current.Attribute(Common.CrifNamespaces.Common + "code").Value;
                            break;
                        }
                    }
                }*/

                var channel = xdoc.Descendants(Common.CrifNamespaces.Common + "channel");
                var channelEnum = channel.GetEnumerator();
                channelEnum.MoveNext();
                var dealershipCode = channelEnum.Current.Attribute(Common.CrifNamespaces.Common + "code")?.Value;
                var dealershipName = channelEnum.Current.Attribute(Common.CrifNamespaces.Common + "dbaName")?.Value;
                var dealershipPassword = channelEnum.Current.Attribute(Common.CrifNamespaces.Common + "costCenterCode")?.Value;
                
                var isActiveFlag = channelEnum.Current.Attribute(Common.CrifNamespaces.Common + "isActiveFL")?.Value;
                if(isActiveFlag == "false")
                {
                    return null;
                }

                var classificationItems = channel.Descendants(Common.CrifNamespaces.Common + "channelClassificationItem").GetEnumerator();
                while (classificationItems.MoveNext())
                {
                    if(string.Equals(classificationItems.Current.Attribute(Common.CrifNamespaces.Common + "name").Value, "Dealer", StringComparison.OrdinalIgnoreCase))
                    {
                        return new DealershipAuthRequest(dealershipCode, dealershipName, dealershipPassword, applicantLastName, applicationId);
                    }
                }

                return null;
            }
            catch
            {
                throw new FormatException("CRIF XML is in an unexpected layout.");
            }
        }
    }
}