using AccountsBLL.AccountReports;
using AccountsBLL.AccountReports.AccountRegister;
using AccountsDAL.CustomCode.AccountReports.Register;
using AccountsDAL.DTO.AccountsReports;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.Telemetry;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Threading.Tasks;

namespace AccountsBLL.AccountReports.AccountRegister
{
    public class AccountRegisterReportBLL : IAccountRegisterReportBLL
    {
        private const int DEFAULT_MAX_RESULT_CAP = 500;

        private readonly IAccountRegisterReportDAL
            _accountRegisterReportDAL;

        private readonly IAccountReportAccessControlBLL
            _accessControlBLL;

        public AccountRegisterReportBLL(
            IAccountRegisterReportDAL accountRegisterReportDAL,
            IAccountReportAccessControlBLL accessControlBLL)
        {
            _accountRegisterReportDAL = accountRegisterReportDAL;
            _accessControlBLL = accessControlBLL;
        }

        // UI paged result
        public async Task<AccountRegisterDetailReportResultDTO>GetAccountRegisterDetailReport(int firstNumber,int maxResult,CriteriaDTO criteriaDTO,List<AccountReportSortOptionDTO> sortBy,int menuId,LoginDTO loginDTO,CancellationToken ct = default)
        {
            try
            {
                GB5Trace.Step("parse-criteria-account-register-detail",
                    new
                    {
                        firstNumber,
                        maxResult,
                        menuId
                    });

                var criteria = AccountReportCriteriaParser.Parse(criteriaDTO, loginDTO);

                // Voucher Register Detail always shows Instrument/TDS/Bill Allocation for each line
                // when that line has one — no caller opt-in needed for these 3. This overrides
                // whatever the parser produced from caller input; it's scoped to THIS report's own
                // criteria instance only, not a change to AccountReportCriteria's own defaults (which
                // would also silently affect AccountLedgerReportBLL). CostCenter/Addon stay
                // caller-opt-in, unchanged.
                criteria.NeedBillAllocation = 1;
                criteria.NeedInstrument = 1;
                criteria.NeedTDS = 1;

                int cappedMaxResult = maxResult > 0? Math.Min(maxResult,DEFAULT_MAX_RESULT_CAP): DEFAULT_MAX_RESULT_CAP;

                await _accessControlBLL.EnforceAsync(criteria,cappedMaxResult,menuId,loginDTO).ConfigureAwait(false);

                GB5Trace.Step("query-account-register-detail",
                    new
                    {
                        firstNumber,
                        cappedMaxResult
                    });

                return await _accountRegisterReportDAL.GetAccountRegisterDetailReport(firstNumber,cappedMaxResult,criteria,sortBy,loginDTO,ct).ConfigureAwait(false);
            }
            catch (Exception ex)
            {
                GB5Trace.MarkFailed("account-register-detail-failed",ex);
                throw;
            }
        }

        // Report streaming result
        public async IAsyncEnumerable<AccountRegisterDetailReportDTO>GetAccountRegisterDetailReportStream(int firstNumber,int maxResult,CriteriaDTO criteriaDTO,List<AccountReportSortOptionDTO> sortBy,int menuId,LoginDTO loginDTO,
                [EnumeratorCancellation]
                CancellationToken ct = default)
        {
            GB5Trace.Step("stream-account-register-detail",
                new
                {
                    firstNumber,
                    maxResult,
                    menuId
                });

            var criteria = AccountReportCriteriaParser.Parse(criteriaDTO, loginDTO);

            // Same always-on override as the paged method above — keep both in sync.
            criteria.NeedBillAllocation = 1;
            criteria.NeedInstrument = 1;
            criteria.NeedTDS = 1;

            int cappedMaxResult = maxResult > 0
                ? Math.Min(
                    maxResult,
                    DEFAULT_MAX_RESULT_CAP)
                : DEFAULT_MAX_RESULT_CAP;

            await _accessControlBLL.EnforceAsync(criteria,cappedMaxResult,menuId,loginDTO).ConfigureAwait(false);

            await foreach (var row in _accountRegisterReportDAL.GetAccountRegisterDetailReportStream(firstNumber,cappedMaxResult,criteria,sortBy,loginDTO,ct).ConfigureAwait(false))
            {
                yield return row;
            }
        }
    }
}