using System;
using System.Collections.Generic;

namespace PayRollDAL.DTO.GateEntry
{
    /// <summary>
    /// Resolution result for one raw input row.
    /// Contains fully-formed detail and header fields, plus any per-field errors.
    /// </summary>
    public class GateEntryDetailResolveResultDTO
    {
        // ── Header-level resolved fields (for TGATEENTRY) ───────────────

        /// <summary>Resolved from SupplierName. -1 if not found.</summary>
        public int PartyId { get; set; } = -1;
        public string PartyCode { get; set; }
        public string PartyName { get; set; }

        /// <summary>Invoice number passed through as-is for ReferenceNumber on the header.</summary>
        public string InvoiceNumber { get; set; }

        /// <summary>Invoice date passed through as-is for ReferenceDate on the header.</summary>
        public DateOnly? InvoiceDate { get; set; }

        // ── Detail row (for TGATEENTRYDETAIL) ───────────────────────────

        /// <summary>Fully-formed detail row, ready to be added to GateEntryDTO.GateEntryDetailArray.</summary>
        public GateEntryDetailDTO DetailRow { get; set; } = new GateEntryDetailDTO();

        // ── Validation outcome ───────────────────────────────────────────

        /// <summary>Per-field resolution errors. Empty means all lookups succeeded.</summary>
        public List<string> Errors { get; set; } = new List<string>();

        public bool IsValid => Errors.Count == 0;
    }

    // ── Internal Dapper mapping DTOs ─────────────────────────────────────
    // These are only used inside GateEntryDAL for QuerySingleAsync calls.

    internal class PartyLookupDTO
    {
        public int    PartyId   { get; set; }
        public string PartyCode { get; set; }
        public string PartyName { get; set; }
    }

    internal class ItemLookupDTO
    {
        public int    ItemId   { get; set; }
        public string ItemCode { get; set; }
        public string ItemName { get; set; }
    }

    internal class LotLookupDTO
    {
        public int    LotId     { get; set; }
        public string LotNumber { get; set; }
    }

    internal class DocumentLookupDTO
    {
        public int    DocumentId     { get; set; }
        public string DocumentNumber { get; set; }
    }

    internal class AllocationLookupDTO
    {
        public int AllocationId { get; set; }
    }

    internal class UOMLookupDTO
    {
        public int    UOMId   { get; set; }
        public string UOMName { get; set; }
    }
}