namespace Admin.NET.Plugin.AiDOP.Supply;

/// <summary>
/// 采购申请转 DO/PO 服务。P4 初版仅处理本次生成的要货令 PR，不扫描历史 PR。
/// </summary>
public class PurchaseOrderTransferService : ITransient
{
    private readonly ISqlSugarClient _db;
    private readonly NumberRuleService _numberRuleService;
    private readonly UserManager _userManager;

    public PurchaseOrderTransferService(ISqlSugarClient db, NumberRuleService numberRuleService, UserManager userManager)
    {
        _db = db;
        _numberRuleService = numberRuleService;
        _userManager = userManager;
    }

    public async Task<PurchaseOrderTransferResult> TransferGeneratedRequireGoodsAsync(List<PurchaseRequestMain> requests, string account)
    {
        var candidates = requests.Where(x => x.IsRequireGoods == 1).ToList();
        if (candidates.Count == 0) return new PurchaseOrderTransferResult();

        var createdOrders = new List<string>();
        var transferredPrIds = new List<long>();
        var groups = candidates
            .GroupBy(x => new
            {
                x.TenantId,
                x.CompanyId,
                x.FactoryId,
                x.PrPurchaseId,
                x.PrPurchaseNumber,
                x.PrPurchaseName,
                SupplierType = x.SupplierType ?? string.Empty
            })
            .ToList();

        foreach (var tenantGroup in groups.GroupBy(x => x.Key.TenantId.ToString()))
        {
            var groupList = tenantGroup.ToList();
            var purOrdNumbers = await _numberRuleService.NextBatchInCurrentTransactionAsync("DO", tenantGroup.Key, groupList.Count, account);
            if (purOrdNumbers.Count < groupList.Count || purOrdNumbers.Any(string.IsNullOrWhiteSpace))
                throw Oops.Oh($"当前DO/PO单号生成失败，请检查DO编号规则维护。Domain={tenantGroup.Key}");

            for (var i = 0; i < groupList.Count; i++)
            {
                var group = groupList[i];
                var purOrd = purOrdNumbers[i].Trim();
                var now = DateTime.Now;
                var supplierType = group.Key.SupplierType;
                var isOutsource = string.Equals(supplierType, "委外", StringComparison.OrdinalIgnoreCase);
                var poType = isOutsource ? "PW" : "po";
                var usage = isOutsource ? "委外加工" : supplierType;
                var buyer = ResolveBuyer(supplierType);
                var rows = group.OrderBy(x => x.PrSarriveDate).ThenBy(x => x.PrBillNo).ToList();

                await InsertPurchaseOrderMasterAsync(purOrd, poType, usage, buyer, group.Key.PrPurchaseNumber, now, account, group.Key.TenantId);
                var masterId = await _db.Ado.GetIntAsync(
                    "SELECT IFNULL(MAX(RecID),0) FROM PurOrdMaster WHERE PurOrd=@PurOrd",
                    new SugarParameter("@PurOrd", purOrd));
                if (masterId <= 0) throw Oops.Oh("DO/PO主表生成失败。");

                for (var lineIndex = 0; lineIndex < rows.Count; lineIndex++)
                {
                    await InsertPurchaseOrderDetailAsync(purOrd, poType, masterId, lineIndex + 1, rows[lineIndex], account);
                    rows[lineIndex].State = 4;
                    rows[lineIndex].UpdateByName = account;
                    rows[lineIndex].UpdateTime = now;
                    transferredPrIds.Add(rows[lineIndex].Id);
                }

                createdOrders.Add(purOrd);
            }
        }

        return new PurchaseOrderTransferResult
        {
            CreatedOrderCount = createdOrders.Count,
            TransferredPrCount = transferredPrIds.Count,
            CreatedOrders = createdOrders,
            TransferredPrIds = transferredPrIds
        };
    }

    private async Task InsertPurchaseOrderMasterAsync(
        string purOrd,
        string poType,
        string? usage,
        string buyer,
        string? supplierCode,
        DateTime now,
        string account,
        long tenantId)
    {
        await _db.Ado.ExecuteCommandAsync(
            """
            INSERT INTO PurOrdMaster
            (
                Confirming, CreditTermsInt, Disc, ExchRate, EstVal, ExchRate1, ExchRate2,
                FixedPrice, FixedRate, Frt, PartialOK, AmtPrepaid, PrintPO, PST, Recurr,
                `Release`, Revision, Scheduled, ServiceCharge, SpecialCharge, Taxable,
                Tax1, Tax2, Tax3, TransportDays, IsActive, IsConfirm, Potype, IsChanged,
                TaxIn, Amt, IsPriceChanged,
                Buyer, Domain, PurOrd, OrdDate, ReqBy, Status, Supp, CreateUser, CreateTime,
                UpdateUser, UpdateTime, `Usage`, FSTID, Typed, tenant_id
            )
            VALUES
            (
                0, 0, 0, 1, 0, 1, 1,
                0, 0, 0, 1, 0, 0, 0, 0,
                0, 0, 0, 0, 0, 1,
                0, 0, 0, 0, 1, 1, @PoType, 0,
                1, 0, 0,
                @Buyer, @Domain, @PurOrd, @Now, 'DO', '', @Supp, @CreateUser, @Now,
                @UpdateUser, @Now, @Usage, @FSTID, @Typed, @TenantId
            )
            """,
            new SugarParameter("@PoType", poType),
            new SugarParameter("@Buyer", buyer),
            new SugarParameter("@Domain", tenantId.ToString()),
            new SugarParameter("@PurOrd", purOrd),
            new SugarParameter("@Now", now),
            new SugarParameter("@Supp", supplierCode),
            new SugarParameter("@CreateUser", account),
            new SugarParameter("@UpdateUser", account),
            new SugarParameter("@Usage", usage),
            new SugarParameter("@FSTID", string.Equals(usage, "VMI", StringComparison.OrdinalIgnoreCase) ? "3" : string.Empty),
            new SugarParameter("@Typed", poType == "PW" ? "s" : string.Empty),
            new SugarParameter("@TenantId", tenantId <= 0 ? null : tenantId));
    }

    private async Task InsertPurchaseOrderDetailAsync(string purOrd, string poType, int masterId, int line, PurchaseRequestMain pr, string account)
    {
        var item = (await _db.Ado.SqlQueryAsync<ItemLookupRow>(
            """
            SELECT
                COALESCE(NULLIF(im.ItemNum,''), ic.number) AS ItemNum,
                COALESCE(NULLIF(im.Descr,''), ic.name) AS Descr,
                COALESCE(NULLIF(im.UM,''), ic.unit) AS UM,
                IFNULL(im.Location, '') AS Location,
                IFNULL(im.Rev, '') AS Rev,
                IFNULL(im.Drawing, '') AS Drawing
            FROM ic_item ic
            LEFT JOIN ItemMaster im ON ic.number = im.ItemNum
            WHERE ic.Id = @IcitemId
            LIMIT 1
            """,
            new SugarParameter("@IcitemId", pr.IcitemId))).FirstOrDefault();

        await _db.Ado.ExecuteCommandAsync(
            """
            INSERT INTO PurOrdDetail
            (
                QtyBO, RctCost, CreditTermsInt, UpdateCurrentCost, CumReceived1, CumReceived2,
                CumReceived3, CumReceived4, Disc, FixedPrice, InspectReq, SingleLot, SupplyPer,
                PurOrd, PST, PackingSlipQty, PayUMConv, PurCost, RctQty, QtyOrded, QtyReceived,
                QtyReturned, Active, QtyReleased, RctUMConversion, Scheduled, ScheduledChanged,
                SchedMRPReq, SafetyDays, SafetyHours, StdCost, Taxable, TaxIn, MaxTaxableAmt,
                TransportHours, UMConversion, VAT, IsActive, IsConfirm, Potype, IsChanged,
                TaxRate, IsRounding, ReceiptQty, BarCodeQty, IsClosed, QtyReturnedRefund, CumQtyBO,
                Line, ItemNum, Descr, UM, Rev, Drawing, Location, DueDate, NeedDate, LotSerial, PurOrdRecID, Status, Req,
                CreateUser, CreateTime, UpdateUser, UpdateTime, tenant_id
            )
            VALUES
            (
                0, 0, 0, 0, 0, 0,
                0, 0, 0, 0, 0, 0, 0,
                @PurOrd, 0, 0, 1, 0, 0, @QtyOrded, 0,
                0, 1, 0, 1, 0, 0,
                0, 0, 0, 0, 1, 1, 0,
                0, 1, 0, 1, 1, @PoType, 0,
                0, 0, 0, 0, 0, 0, 0,
                @Line, @ItemNum, @Descr, @UM, @Rev, @Drawing, @Location, @DueDate, @NeedDate, '', @PurOrdRecID, 'R', @Req,
                @CreateUser, @Now, @UpdateUser, @Now, @TenantId
            )
            """,
            new SugarParameter("@PurOrd", purOrd),
            new SugarParameter("@PoType", poType),
            new SugarParameter("@QtyOrded", pr.PrAqty ?? pr.PrSqty ?? pr.PrRqty ?? 0),
            new SugarParameter("@Line", line),
            new SugarParameter("@ItemNum", item?.ItemNum ?? pr.IcitemName ?? string.Empty),
            new SugarParameter("@Descr", item?.Descr ?? pr.IcitemName ?? string.Empty),
            new SugarParameter("@UM", item?.UM ?? pr.PrUnit ?? string.Empty),
            new SugarParameter("@Rev", item?.Rev ?? string.Empty),
            new SugarParameter("@Drawing", item?.Drawing ?? string.Empty),
            new SugarParameter("@Location", string.IsNullOrWhiteSpace(item?.Location) ? "1001" : item.Location),
            new SugarParameter("@DueDate", pr.PrSarriveDate),
            new SugarParameter("@NeedDate", pr.PrSarriveDate),
            new SugarParameter("@PurOrdRecID", masterId),
            new SugarParameter("@Req", pr.PrBillNo),
            new SugarParameter("@CreateUser", account),
            new SugarParameter("@UpdateUser", account),
            new SugarParameter("@Now", DateTime.Now),
            new SugarParameter("@TenantId", pr.TenantId <= 0 ? null : pr.TenantId));
    }

    private static string ResolveBuyer(string? supplierType)
    {
        return supplierType switch
        {
            "研发" => "130",
            "ECR" => "170",
            _ => "110"
        };
    }

    private sealed class ItemLookupRow
    {
        public string? ItemNum { get; set; }
        public string? Descr { get; set; }
        public string? UM { get; set; }
        public string? Location { get; set; }
        public string? Rev { get; set; }
        public string? Drawing { get; set; }
    }
}

public sealed class PurchaseOrderTransferResult
{
    public int CreatedOrderCount { get; set; }
    public int TransferredPrCount { get; set; }
    public List<string> CreatedOrders { get; set; } = new();
    public List<long> TransferredPrIds { get; set; } = new();
}