using System.Xml.Linq;
using Serilog;
using CRIF.ACTion.Common.Parsers;
using Landmark.OLA.Models.Decisioning.Enums;

namespace CRIF.ACTion.Decisioning
{
    public class DecisioningStateResponseParser : IResponseParser<DecisioningState>
    {
        private const string SuccessMessage = "Success";
        private const string MissingRequredInformation = "WorkFlowBC::SendToWorkflow::(Decisioning) Process Instances not in correct state Please correct the Process Errors.";

        private string ExpectedLoanId;

        public DecisioningStateResponseParser()
        {
        }

        public void SetLoanId(string expectedLoanId)
        {
            ExpectedLoanId = expectedLoanId;
        }

        public DecisioningState Parse(XElement xElement)
        {
            if (string.IsNullOrWhiteSpace(ExpectedLoanId))
            {
                throw new ArgumentException("Must set valid ExpectedLoanId with SetLoanId(expectedLoanId)");
            }

            if (xElement.Value.Equals(SuccessMessage + ExpectedLoanId))
            {
                return DecisioningState.Requested;
            }
            if (xElement.Value.Equals(MissingRequredInformation))
            {
                Log.Debug("Application {loanId} is likely missing information required for decisioning.", SuccessMessage, ExpectedLoanId);
                return DecisioningState.MissingRequiredInformation;
            }
            else
            {
                Log.Debug("Did not receive {SuccessMessage} for a SendToDecisioning call for Application {loanId}.", SuccessMessage, ExpectedLoanId);
                return DecisioningState.Unknown;
            }
        }
    }
}