using AccountsDAL.DTO.AccountsReports;
using AccountsDAL.DTO.Reports;
using AccountsDAL.Query.AccountReports;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.QueryExecutor;

namespace AccountsDAL.CustomCode.AccountReports.AccountCollectionProjection
{
    public class AccountCollectionProjectionReportDAL : IAccountCollectionProjectionReportDAL
    {
        private readonly IQueryExecutor _queryExecutor;

        public AccountCollectionProjectionReportDAL(IQueryExecutor queryExecutor)
        {
            _queryExecutor = queryExecutor;
        }

        public async Task<CollectionProjectionResultDTO> GetCollectionProjectionReport(
            int firstNumber, int maxResult, AccountReportCriteria criteria,
            List<AccountReportSortOptionDTO> sortBy, LoginDTO loginDTO)
        {
            var (sharedFilter, parameters) = AccountReportFilterBuilder.Build(criteria, loginDTO);
            var (outstandingFilter, outstandingParameters) = AccountReportFilterBuilder.BuildOutstandingOnly(criteria);
            parameters.AddDynamicParams(outstandingParameters);

            // Same SqlDateTime-overflow avoidance as Outstanding/Ageing — this report uses AsOnDate, not
            // a real period range, so Build()'s PeriodFromDate/PeriodToDate must be overwritten with a
            // valid date before Dapper binds them.
            parameters.Add("PeriodFromDate", criteria.AsOnDate);
            parameters.Add("PeriodToDate", criteria.AsOnDate);
            parameters.Add("AsOnDate", criteria.AsOnDate);
            parameters.Add("InfoRequired", criteria.IncludeInformational ? 0 : 1);
            parameters.Add("OverallDays", criteria.OverallDays);
            parameters.Add("Offset", Math.Max(0, firstNumber - 1));
            parameters.Add("PageSize", maxResult);

            var filter = sharedFilter + outstandingFilter;
            var orderBy = AccountReportSortBuilder.BuildCollectionProjectionOrderBy(sortBy);
            var sql = AccountCollectionProjectionReportsQB.GET_COLLECTION_PROJECTION_DETAIL
                .Replace("{DynamicFilter}", filter)
                .Replace("{OrderBy}", orderBy);

            var paged = await _queryExecutor
                .QueryPagedAsync<CollectionProjectionReportDTO>(loginDTO, sql, parameters)
                .ConfigureAwait(false);

            var totalsSql = AccountCollectionProjectionReportsQB.GET_COLLECTION_PROJECTION_TOTALS.Replace("{DynamicFilter}", filter);
            var totals = await _queryExecutor
                .QuerySingleAsync<CollectionProjectionTotalsDTO>(loginDTO, totalsSql, parameters)
                .ConfigureAwait(false);

            return new CollectionProjectionResultDTO
            {
                Items = paged.Items ?? Enumerable.Empty<CollectionProjectionReportDTO>(),
                TotalCount = paged.TotalCount,
                TotalReceivable = totals?.TotalReceivable ?? 0,
                TotalPayable = totals?.TotalPayable ?? 0,
                TotalBalance = totals?.TotalBalance ?? 0,
                TotalCashDiscountAmount = totals?.TotalCashDiscountAmount ?? 0
            };
        }
    }
}