using Oms.Application.Dtos.Orders;
using Oms.Domain.ChannelsAggregate.Repositories;
using Oms.Domain.OrdersAggregate.Consts;
using Oms.Domain.OrdersAggregate.Entities;
using Oms.Domain.SystemAggregate.Entities;

namespace Oms.Application.Shared;

/// <summary>
/// 从揽收单表组装 itfx createOrderOne 标准请求体（不读关联物流单）。
/// </summary>
public static class PickupOrderDownstreamCreateOneBodyBuilder
{
    public static async Task<(ItfxCreateOrderOneBody Body, string? ForecastProductCode)> BuildAsync(
        PickupOrder pickup,
        WarehouseAddress warehouse,
        ISalesProductRepository salesProductRepository,
        IServiceChannelRepository serviceChannelRepository,
        CancellationToken cancellationToken = default)
    {
        var productCode = await ResolveForecastProductCodeAsync(
            pickup.CarrierService,
            salesProductRepository,
            serviceChannelRepository,
            cancellationToken);

        var isReverse = string.Equals(
            PickupDirectionCodes.NormalizeOrDefault(pickup.Direction),
            PickupDirectionCodes.Reverse,
            StringComparison.OrdinalIgnoreCase);

        var customerSide = MapCustomerSide(pickup);
        var warehouseSide = MapWarehouseSide(warehouse);

        var weight = pickup.TotalActualWeight ?? pickup.ChargeableWeight;
        var qty = pickup.ParcelCount > 0 ? pickup.ParcelCount : 1;
        var cargoName = string.IsNullOrWhiteSpace(pickup.Remark)
            ? "上门揽收包裹"
            : pickup.Remark.Trim();

        return (new ItfxCreateOrderOneBody
        {
            ClientNo = pickup.PickupNo,
            ServiceNo = pickup.PickupNo,
            TrackNo = pickup.CarrierWaybillNo,
            ProductCode = productCode,
            CargoAttribute = CargoAttributeCodes.General,
            WarehouseId = pickup.WarehouseId,
            CustomerId = pickup.CustomerId,
            Length = 1,
            Width = 1,
            Height = 1,
            ActualWeight = weight,
            ChargeableWeight = pickup.ChargeableWeight ?? weight,
            IsCod = false,
            DeclaredCurrency = pickup.Currency,
            DeclaredSum = FormatDecimal(pickup.ReceivableAmount ?? pickup.FreightAmount ?? 1),
            Quantity = qty.ToString(),
            Sender = isReverse ? warehouseSide.Sender : customerSide.Sender,
            Receiver = isReverse ? customerSide.Receiver : warehouseSide.Receiver,
            Items =
            [
                new OrderParcelItemInput
                {
                    CnName = cargoName,
                    EnName = cargoName,
                    UnitPrice = 1,
                    UnitWeight = weight,
                    Quantity = qty,
                    Amount = 1,
                    Weight = weight
                }
            ]
        }, productCode);
    }

    /// <summary>
    /// createOrderOne.productCode：承运服务（销售产品）对应渠道的 ForecastCode，缺省回退 CarrierService。
    /// </summary>
    public static async Task<string?> ResolveForecastProductCodeAsync(
        string? carrierService,
        ISalesProductRepository salesProductRepository,
        IServiceChannelRepository serviceChannelRepository,
        CancellationToken cancellationToken = default)
    {
        var salesProductCode = carrierService?.Trim();
        if (string.IsNullOrWhiteSpace(salesProductCode))
        {
            return null;
        }

        var product = await salesProductRepository.GetByProductCodeAsync(salesProductCode, cancellationToken);
        if (product == null)
        {
            return salesProductCode;
        }

        var providers = await salesProductRepository.GetAllocationProvidersAsync(product.Id, cancellationToken);
        var channelId = providers
            .Where(x => x.ServiceChannelId is > 0)
            .OrderBy(x => x.SerialNumber)
            .Select(x => x.ServiceChannelId!.Value)
            .FirstOrDefault();
        if (channelId <= 0)
        {
            return salesProductCode;
        }

        var channel = await serviceChannelRepository.FirstOrDefaultAsync(x => x.Id == channelId, cancellationToken);
        var forecastCode = channel?.ForecastCode?.Trim();
        return string.IsNullOrWhiteSpace(forecastCode) ? salesProductCode : forecastCode;
    }

    private static string? FormatDecimal(decimal? value) =>
        value.HasValue ? value.Value.ToString(System.Globalization.CultureInfo.InvariantCulture) : null;

    private static (OrderParcelSenderInput Sender, OrderParcelReceiverInput Receiver) MapCustomerSide(PickupOrder pickup)
    {
        var sender = new OrderParcelSenderInput
        {
            SenderName = pickup.SenderName,
            Company = pickup.SenderCompany,
            Phone = pickup.SenderPhone,
            TelePhone = pickup.SenderTelePhone,
            Email = pickup.SenderEmail,
            CountryCode = string.IsNullOrWhiteSpace(pickup.SenderCountryCode)
                ? "CN"
                : pickup.SenderCountryCode.Trim().ToUpperInvariant(),
            Province = pickup.SenderProvince,
            City = pickup.SenderCity,
            ZipCode = pickup.SenderZipCode,
            StreetAddress1 = pickup.SenderStreetAddress1,
            StreetAddress2 = pickup.SenderStreetAddress2,
            StreetAddress3 = pickup.SenderStreetAddress3,
            HouseNumber = pickup.SenderHouseNumber
        };

        var receiver = new OrderParcelReceiverInput
        {
            RecipientsName = pickup.SenderName,
            CompanyName = pickup.SenderCompany,
            Phone = pickup.SenderPhone,
            TelePhone = pickup.SenderTelePhone,
            Email = pickup.SenderEmail,
            CountryCode = string.IsNullOrWhiteSpace(pickup.SenderCountryCode)
                ? "CN"
                : pickup.SenderCountryCode.Trim().ToUpperInvariant(),
            Province = pickup.SenderProvince,
            City = pickup.SenderCity,
            ZipCode = string.IsNullOrWhiteSpace(pickup.SenderZipCode) ? "000000" : pickup.SenderZipCode,
            StreetAddress1 = pickup.SenderStreetAddress1,
            StreetAddress2 = pickup.SenderStreetAddress2,
            StreetAddress3 = pickup.SenderStreetAddress3,
            StreetNumber = pickup.SenderHouseNumber
        };

        return (sender, receiver);
    }

    private static (OrderParcelSenderInput Sender, OrderParcelReceiverInput Receiver) MapWarehouseSide(
        WarehouseAddress warehouse)
    {
        var contact = string.IsNullOrWhiteSpace(warehouse.Recipient)
            ? warehouse.WarehouseName
            : warehouse.Recipient!.Trim();
        var street = string.IsNullOrWhiteSpace(warehouse.ShippingAddress)
            ? warehouse.WarehouseName
            : warehouse.ShippingAddress!.Trim();

        var sender = new OrderParcelSenderInput
        {
            SenderName = contact,
            Phone = warehouse.ContactPhone,
            CountryCode = "CN",
            StreetAddress1 = street,
            ZipCode = "000000"
        };

        var receiver = new OrderParcelReceiverInput
        {
            RecipientsName = contact,
            Phone = warehouse.ContactPhone,
            CountryCode = "CN",
            ZipCode = "000000",
            StreetAddress1 = street
        };

        return (sender, receiver);
    }
}