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

namespace Admin.NET.Plugin.AiDOP.Tests.S5.MaterialWarehouse;

/// <summary>
/// Phase 5C 最后复核：证明 UoW 的「INSERT…ON DUPLICATE KEY(noop) 首建 bootstrap」**不绕过 G4/G5**。
/// 守卫在 LockAndLoad(只读既有行) 之后、Write(含 bootstrap) 之前运行 → 缺行时 G4/G5 先命中、0 写；
/// 仅「允许首次创建的 TransType(如 rct-po-ins 入库)」在守卫通过后才 bootstrap。选项 A（正确，不污染存在性语义）。
/// </summary>
public class InventoryBootstrapGuardTests
{
    private const long Tenant = 797403760988229L;

    private static InventoryTransactionCommand Cmd(string tt, decimal qty, string item = "IT-1", string loc = "L1")
        => new InventoryTransactionCommand
        {
            TenantId = Tenant, DomainCode = "8010", PostingId = 1, TransactionGroupId = 100, Seq = 1,
            TransType = tt, ChangeQty = qty, UmConversion = 1m, ItemNum = item, Location = loc, User = "t",
        };

    private static InventoryTransactionService Svc(FakeInventoryDatabase db)
        => new InventoryTransactionService(new FakeInventoryUnitOfWorkFactory(db));

    // Test 1：净出库 + InvMaster 不存在 → 首命中 G4（InvMasterMissing），非 G9；且不 bootstrap
    [Fact]
    public async Task NetOutbound_NoInvMaster_HitsG4_NotG9_NoBootstrap()
    {
        var db = new FakeInventoryDatabase();
        db.SeedMaster(Tenant, "8010", "IT-1", "L1");   // 主数据在，无库存行
        var r = await Svc(db).PostAsync(new[] { Cmd("iss-x", -10m) });

        Assert.Equal(InventoryPostingOutcome.ValidationFailure, r.Outcome);
        Assert.Equal(InventoryGuardCode.InvMasterMissing, r.GuardErrors[0].Code);   // 首命中 G4
        Assert.Equal(0, db.InvMaster.Count);           // 未 bootstrap 占位行
        Assert.Equal(0, db.LocationDetail.Count);
        Assert.Equal(0, db.TotalPersisted);
    }

    // Test 2：净出库 + InvMaster 存在但 LocationDetail 不存在 → 首命中 G5（LocationDetailMissing）；且不 bootstrap 明细
    [Fact]
    public async Task NetOutbound_InvMasterOnly_NoLocationDetail_HitsG5_NoBootstrap()
    {
        var db = new FakeInventoryDatabase();
        db.SeedMaster(Tenant, "8010", "IT-1", "L1");
        db.InvMaster[FakeInventoryDatabase.InvK(Tenant, "8010", "IT-1", "L1")] =
            new InventoryBalance { QtyOnHand = 100m, AvailStatusQty = 100m, Assay = 100m, FreezeQty = 100m };

        var r = await Svc(db).PostAsync(new[] { Cmd("iss-x", -10m) });

        Assert.Equal(InventoryPostingOutcome.ValidationFailure, r.Outcome);
        Assert.Equal(InventoryGuardCode.LocationDetailMissing, r.GuardErrors[0].Code);   // 首命中 G5
        Assert.Equal(0, db.LocationDetail.Count);       // 未 bootstrap 明细行
        Assert.Equal(1, db.InvMaster.Count);            // 既有 InvMaster 未被改动/新增
    }

    // Test 3：rct-po-ins（允许首次创建）+ 两表均不存在 → 允许 bootstrap 并成功
    [Fact]
    public async Task RctPoIns_BothMissing_BootstrapAndSucceed()
    {
        var db = new FakeInventoryDatabase();
        db.SeedMaster(Tenant, "8010", "IT-1", "L1");
        var r = await Svc(db).PostAsync(new[] { Cmd("rct-po-ins", 100m) });

        Assert.Equal(InventoryPostingOutcome.Success, r.Outcome);
        Assert.Equal(1, db.InvMaster.Count);            // 首建
        Assert.Equal(1, db.LocationDetail.Count);
        Assert.Equal(100m, db.InvMaster[FakeInventoryDatabase.InvK(Tenant, "8010", "IT-1", "L1")].QtyOnHand);
    }
}