namespace Oms.Domain.OrdersAggregate.Consts;

/// <summary>
/// 揽收方向：正向（客户地址→仓库）/ 逆向（仓库→客户地址）。
/// </summary>
public static class PickupDirectionCodes
{
    /// <summary>正向：客户揽收地址 → 仓库</summary>
    public const string Forward = "forward";

    /// <summary>逆向：仓库 → 客户揽收地址</summary>
    public const string Reverse = "reverse";

    public static readonly HashSet<string> All = new(StringComparer.OrdinalIgnoreCase)
    {
        Forward,
        Reverse
    };

    public static string NormalizeOrDefault(string? direction)
    {
        var code = string.IsNullOrWhiteSpace(direction) ? Forward : direction.Trim();
        if (!All.Contains(code))
        {
            return Forward;
        }

        return All.First(x => string.Equals(x, code, StringComparison.OrdinalIgnoreCase));
    }

    public static string GetDisplayName(string? direction)
    {
        return NormalizeOrDefault(direction) switch
        {
            Reverse => "逆向",
            _ => "正向"
        };
    }
}