using Admin.NET.Plugin.AiDOP.MaterialWarehouse.InventoryPosting.Inventory;

namespace Admin.NET.Plugin.AiDOP.MaterialWarehouse.InventoryPosting.Receipt;

public sealed class InventoryLocationCheckResult
{
    public bool Ok { get; set; }
    public string Message { get; set; }
    public IReadOnlyList<string> OffendingItems { get; set; } = System.Array.Empty<string>();
}

/// <summary>
/// C5 前置 CheckInventoryStatus 轻校验（复刻 pr_SFM_CheckInventoryStatus：InventoryTVP 中 Location 为空即失败）。
/// **不是** C5 九道 Guard 的替代，不做库存充足性校验——仅保证每条库存命令有库位。
/// </summary>
public static class InventoryLocationCheck
{
    public static InventoryLocationCheckResult Validate(IReadOnlyList<InventoryTransactionCommand> cmds)
    {
        if (cmds == null) throw new ArgumentNullException(nameof(cmds));
        var offenders = cmds.Where(c => string.IsNullOrEmpty(c.Location))
            .Select(c => c.ItemNum).Distinct(StringComparer.Ordinal).ToList();
        return new InventoryLocationCheckResult
        {
            Ok = offenders.Count == 0,
            Message = offenders.Count == 0 ? null : "存在库位为空的记录",
            OffendingItems = offenders,
        };
    }
}