using System.Linq;
using LCU.API.Collections.CollectionsApiLib.Models;

namespace LCU.API.Collections.RepoApi.Domain.Extensions
{
    public static class TemenosAccountExtensions
    {
        public const string UserStatusFieldOld = "User Status Code 1";
        public const int OpenCaseStatus = 33;
        public const int CaseTypeRepossession = 7;

        public static bool HasOldIntellectStatus(this TemenosAccount recoveryAccount)
        {
            return recoveryAccount?.CustomFieldMap != null 
                   && recoveryAccount.CustomFieldMap.ContainsKey(UserStatusFieldOld) 
                   && !string.IsNullOrWhiteSpace(recoveryAccount.CustomFieldMap[UserStatusFieldOld]);
        }

        /**
         * CaseId of 0 corresponds to "An open case with a valid RepoStatus"
         */
        public static bool HasRecoveryCase(this TemenosAccount recoveryAccount, int caseId)
        {
            if (recoveryAccount?.Cases == null || !recoveryAccount.Cases.Any())
            {
                return false;
            }

            return caseId == 0 ? recoveryAccount.HasOpenRecoveryCase() : recoveryAccount.HasSpecificCase(caseId);
        }

        public static bool HasOpenRecoveryCase(this TemenosAccount recoveryAccount)
        {
            TemenosCase selectedCase = null;

            if (recoveryAccount?.Cases == null || !recoveryAccount.Cases.Any())
            {
                return false;
            }

            selectedCase = recoveryAccount.Cases
                .FirstOrDefault(x => x.CaseStatusId == OpenCaseStatus && x.RepoStatus != RepoStatus.UNKNOWN);

            return (selectedCase != null);
        }

        public static bool HasSpecificCase(this TemenosAccount recoveryAccount, int caseId)
        {
            TemenosCase selectedCase = null;

            if (recoveryAccount?.Cases == null || !recoveryAccount.Cases.Any())
            {
                return false;
            }

            selectedCase = recoveryAccount.Cases.FirstOrDefault(x => x.CaseId == caseId);
            return (selectedCase != null);
        }
        
        public static TemenosCase FindRecoveryCaseOrDefault(this TemenosAccount recoveryAccount, int caseId)
        {
            TemenosCase selectedCase = null;

            if (recoveryAccount?.Cases == null || !recoveryAccount.Cases.Any())
            {
                return null;
            }

            if (caseId > 0)
            {
                selectedCase = recoveryAccount.Cases.FirstOrDefault(x => x.CaseId == caseId);
            }
            else
            {
                selectedCase = recoveryAccount.Cases
                    .Where(x => x.CaseStatusId == OpenCaseStatus && x.RepoStatus != RepoStatus.UNKNOWN
                    && x.CaseTypeId == CaseTypeRepossession && x.RepoStatus != RepoStatus.INELIGIBLE)
                    .OrderByDescending(x => x.CreatedDate).FirstOrDefault();
            }

            return selectedCase;
        }
    }
}