using System.Globalization;
using Oms.Application.Dtos.Orders;

namespace Oms.Application.Labeling;

/// <summary>
/// 将订单出参映射为 hiprint PrintData（camelCase）。
/// </summary>
public static class LabelPrintDataBuilder
{
    public static IReadOnlyDictionary<string, object?> Build(
        OrderOutput order,
        string? operatorName = null,
        DateTime? printTime = null)
    {
        var receiver = order.Receiver;
        var sender = order.Sender;
        var weight = PickWeight(order.WeightList);
        var data = new Dictionary<string, object?>(StringComparer.OrdinalIgnoreCase)
        {
            ["serviceNo"] = order.ServiceNo,
            ["clientNo"] = order.ClientNo,
            ["trackNo"] = order.TrackNo,
            ["requestId"] = order.RequestId,
            ["productCode"] = order.ProductCode,
            ["salesProductName"] = order.ProductName,
            ["channelCode"] = order.ChannelCode,
            ["channelName"] = order.ChannelName,
            ["warehouseName"] = order.Warehouse,
            ["customerCode"] = order.CustomerCode,
            ["customerName"] = order.CustomerName,

            ["recipientName"] = receiver?.RecipientsName,
            ["recipientCompany"] = receiver?.CompanyName,
            ["recipientPhone"] = FirstNonEmpty(receiver?.Phone, receiver?.TelePhone),
            ["recipientEmail"] = receiver?.Email,
            ["recipientZip"] = receiver?.ZipCode,
            ["recipientCountry"] = order.ConsigneeCountry,
            ["recipientCountryName"] = order.ConsigneeCountryName,
            ["recipientProvince"] = receiver?.Province,
            ["recipientCity"] = receiver?.City,
            ["recipientStreet1"] = receiver?.StreetAddress1,
            ["recipientStreet2"] = receiver?.StreetAddress2,
            ["recipientStreet3"] = receiver?.StreetAddress3,
            ["recipientAddressFull"] = BuildAddressFull(
                receiver?.StreetAddress1,
                receiver?.StreetAddress2,
                receiver?.StreetAddress3,
                receiver?.StreetNumber,
                receiver?.City,
                receiver?.Province,
                receiver?.ZipCode,
                order.ConsigneeCountryName ?? order.ConsigneeCountry),
            ["recipientTaxNo"] = receiver?.TaxNo,
            ["vatNo"] = receiver?.Vat,
            ["eori"] = receiver?.Eori,

            ["senderName"] = sender?.SenderName,
            ["senderCompany"] = sender?.Company,
            ["senderPhone"] = FirstNonEmpty(sender?.Phone, sender?.TelePhone),
            ["senderEmail"] = sender?.Email,
            ["senderZip"] = sender?.ZipCode,
            ["senderProvince"] = sender?.Province,
            ["senderCity"] = sender?.City,
            ["senderStreet1"] = sender?.StreetAddress1,
            ["senderStreet2"] = sender?.StreetAddress2,
            ["senderStreet3"] = sender?.StreetAddress3,
            ["senderAddressFull"] = BuildAddressFull(
                sender?.StreetAddress1,
                sender?.StreetAddress2,
                sender?.StreetAddress3,
                sender?.HouseNumber,
                sender?.City,
                sender?.Province,
                sender?.ZipCode,
                null),

            ["actualWeight"] = weight?.ActualWeight,
            ["volumetricWeight"] = weight?.VolumetricWeight,
            ["chargeableWeight"] = order.ChargeableWeight ?? weight?.ChargeableWeight,
            ["length"] = weight?.Length,
            ["width"] = weight?.Width,
            ["height"] = weight?.Height,
            ["weightUnit"] = "KG",
            ["dimUnit"] = "CM",

            ["printTime"] = (printTime ?? DateTime.Now).ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture),
            ["operatorName"] = operatorName
        };

        data["items"] = order.Items.Select(x => new Dictionary<string, object?>
        {
            ["skuCode"] = x.Sku,
            ["skuName"] = FirstNonEmpty(x.CnName, x.EnName),
            ["qty"] = x.Quantity,
            ["weight"] = x.Weight ?? x.UnitWeight,
            ["declareNameEn"] = x.EnName,
            ["declareValue"] = x.UnitPrice ?? x.Amount
        }).ToList();

        return data;
    }

    /// <summary>
    /// 设计预览用的 Mock PrintData。
    /// </summary>
    public static IReadOnlyDictionary<string, object?> BuildMock() =>
        new Dictionary<string, object?>(StringComparer.OrdinalIgnoreCase)
        {
            ["serviceNo"] = "S202607180001",
            ["clientNo"] = "C-10086",
            ["trackNo"] = "YT1234567890",
            ["requestId"] = "REQ-DEMO",
            ["productCode"] = "DEMO-PRODUCT",
            ["salesProductName"] = "专线-普货",
            ["channelCode"] = "CH-01",
            ["channelName"] = "Demo Channel",
            ["warehouseName"] = "SZ-01",
            ["customerCode"] = "AF0A1",
            ["customerName"] = "Demo Customer",
            ["recipientName"] = "John Lee",
            ["recipientCompany"] = "ACME Inc",
            ["recipientPhone"] = "+1-555-0100",
            ["recipientEmail"] = "john@example.com",
            ["recipientZip"] = "90001",
            ["recipientCountry"] = "US",
            ["recipientCountryName"] = "United States",
            ["recipientProvince"] = "CA",
            ["recipientCity"] = "Los Angeles",
            ["recipientStreet1"] = "100 Demo Street",
            ["recipientStreet2"] = "Suite 8",
            ["recipientStreet3"] = null,
            ["recipientAddressFull"] = "100 Demo Street, Suite 8, Los Angeles, CA 90001, United States",
            ["recipientTaxNo"] = null,
            ["vatNo"] = null,
            ["eori"] = null,
            ["senderName"] = "OMS Warehouse",
            ["senderCompany"] = "OMS Co",
            ["senderPhone"] = "+86-755-0000000",
            ["senderEmail"] = "ops@example.com",
            ["senderZip"] = "518000",
            ["senderProvince"] = "Guangdong",
            ["senderCity"] = "Shenzhen",
            ["senderStreet1"] = "Warehouse Rd 1",
            ["senderStreet2"] = null,
            ["senderStreet3"] = null,
            ["senderAddressFull"] = "Warehouse Rd 1, Shenzhen, Guangdong 518000",
            ["actualWeight"] = 1.25m,
            ["volumetricWeight"] = 1.10m,
            ["chargeableWeight"] = 1.25m,
            ["length"] = 30m,
            ["width"] = 20m,
            ["height"] = 10m,
            ["weightUnit"] = "KG",
            ["dimUnit"] = "CM",
            ["printTime"] = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture),
            ["operatorName"] = "preview",
            ["items"] = new List<Dictionary<string, object?>>
            {
                new()
                {
                    ["skuCode"] = "SKU001",
                    ["skuName"] = "T-Shirt",
                    ["qty"] = 2,
                    ["weight"] = 0.2m,
                    ["declareNameEn"] = "T-Shirt",
                    ["declareValue"] = 9.9m
                }
            }
        };

    private static OrderWeightOutput? PickWeight(IReadOnlyList<OrderWeightOutput> list)
    {
        if (list.Count == 0)
        {
            return null;
        }

        return list.FirstOrDefault(x =>
                   string.Equals(x.Type, "receive", StringComparison.OrdinalIgnoreCase)
                   || string.Equals(x.Type, "收货", StringComparison.OrdinalIgnoreCase))
               ?? list.FirstOrDefault(x =>
                   string.Equals(x.Type, "forecast", StringComparison.OrdinalIgnoreCase)
                   || string.Equals(x.Type, "预报", StringComparison.OrdinalIgnoreCase))
               ?? list[0];
    }

    private static string? BuildAddressFull(params string?[] parts)
    {
        var values = parts
            .Where(x => !string.IsNullOrWhiteSpace(x))
            .Select(x => x!.Trim())
            .ToArray();
        return values.Length == 0 ? null : string.Join(", ", values);
    }

    private static string? FirstNonEmpty(params string?[] values) =>
        values.FirstOrDefault(x => !string.IsNullOrWhiteSpace(x));
}