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

/// <summary>C5 前置守卫代码（LIVE pr_SFM_InventoryTransactionProcessing2 实核 9 道）。</summary>
public enum InventoryGuardCode
{
    /// <summary>G1 进销存数据重复（基础数据 fan-out）。</summary>
    DuplicateBaseData = 1,
    /// <summary>G2 物料无基础资料(ItemMaster)。</summary>
    ItemMasterMissing = 2,
    /// <summary>G3 库位未维护(LocationMaster)。</summary>
    LocationMasterMissing = 3,
    /// <summary>G4 物料_库位无库存(InvMaster)——净出库前置。</summary>
    InvMasterMissing = 4,
    /// <summary>G5 物料_库位[_批次]无库存(LocationDetail)——净出库前置。</summary>
    LocationDetailMissing = 5,
    /// <summary>G6 解冻数 &gt; 冻结库存（inv-unfrz）。</summary>
    UnfreezeExceedsFreeze = 6,
    /// <summary>G7 冻结数 &gt; 非限制库存（inv-frz）。</summary>
    FreezeExceedsAvail = 7,
    /// <summary>G8 质检过账数 &gt; 质检库存（iss-tr-ins）——旧总结遗漏。</summary>
    AssayIssueExceedsAssay = 8,
    /// <summary>G9 出库数 &gt; 非限制库存（其它 TransType）。</summary>
    IssueExceedsAvail = 9,
}

/// <summary>单条守卫错误（结构化，非仅中文串；保留 LIVE ReturnMsg 语义供对账）。</summary>
public sealed class InventoryGuardError
{
    public InventoryGuardCode Code { get; set; }
    public string Message { get; set; }
    public string ItemNum { get; set; }
    public string Location { get; set; }
    public string LotSerial { get; set; }
}

/// <summary>
/// C5 库存上下文快照（守卫与写入的输入；由 store 加载，测试可 fake）。
/// 余额取自 DOP-L3（ado_inventory_master / ado_inventory_location_detail）变动前值；
/// 存在性取自主数据（ItemMaster/LocationMaster，态①/②只读）。
/// </summary>
public sealed class InventoryContext
{
    public bool IsLotControl { get; set; }

    /// <summary>G1：加载时任一键 fan-out（一条命令匹配到多行基础数据）。</summary>
    public bool HasDuplicateBaseData { get; set; }

    public HashSet<string> Items { get; } = new(StringComparer.Ordinal);
    public HashSet<string> Locations { get; } = new(StringComparer.Ordinal);

    /// <summary>InvMaster 变动前余额，键 = item|loc（存在性 = ContainsKey）。</summary>
    public Dictionary<string, InventoryBalance> InvMasters { get; } = new(StringComparer.Ordinal);

    /// <summary>LocationDetail 变动前余额，键 = item|loc|lot|refs。</summary>
    public Dictionary<string, InventoryBalance> LocationDetails { get; } = new(StringComparer.Ordinal);

    /// <summary>item → 当前默认库位（ItemMaster.Location 等价；空串/缺失=未落位）。</summary>
    public Dictionary<string, string> ItemDefaultLocation { get; } = new(StringComparer.Ordinal);

    public static string InvKey(string item, string loc) => (item ?? "") + "|" + (loc ?? "");
    public static string DetailKey(string item, string loc, string lot, string refs)
        => (item ?? "") + "|" + (loc ?? "") + "|" + (lot ?? "") + "|" + (refs ?? "");

    public bool ItemExists(string item) => Items.Contains(item ?? "");
    public bool LocationExists(string loc) => Locations.Contains(loc ?? "");
    public bool HasInvMaster(string item, string loc) => InvMasters.ContainsKey(InvKey(item, loc));

    /// <summary>取 InvMaster 变动前余额；缺失返回 null。</summary>
    public InventoryBalance GetInvMaster(string item, string loc)
        => InvMasters.TryGetValue(InvKey(item, loc), out var b) ? b : null;

    /// <summary>取 LocationDetail 变动前余额；缺失返回 null。</summary>
    public InventoryBalance GetLocationDetail(string item, string loc, string lot, string refs)
        => LocationDetails.TryGetValue(DetailKey(item, loc, lot, refs), out var b) ? b : null;

    public string GetItemDefaultLocation(string item)
        => ItemDefaultLocation.TryGetValue(item ?? "", out var l) ? (l ?? "") : "";
}