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

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

/// <summary>
/// Phase 6C-1：证明 G1-G9 守卫由 <see cref="InventoryTransactionService"/> 拥有（standalone 与 composed 均由 C5 返回），
/// Orchestrator 不构造写集绕过守卫。
/// </summary>
public class InventoryC5OwnershipTests
{
    private const long Tenant = 797403760988229L;

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

    private static InventoryContext CtxStocked(decimal avail)
    {
        var ctx = new InventoryContext();
        ctx.Items.Add("IT-1");
        ctx.Locations.Add("L1");
        ctx.InvMasters[InventoryContext.InvKey("IT-1", "L1")] = new InventoryBalance { QtyOnHand = avail, AvailStatusQty = avail, Assay = avail, FreezeQty = avail };
        ctx.LocationDetails[InventoryContext.DetailKey("IT-1", "L1", "", "")] = new InventoryBalance { QtyOnHand = avail, AvailStatusQty = avail, Assay = avail, FreezeQty = avail };
        return ctx;
    }

    // ① C5 standalone：库存不足 → G9 失败（不经 Orchestrator）
    [Fact]
    public async Task C5Standalone_G9_InsufficientStock_Fails()
    {
        var db = new FakeInventoryDatabase();
        db.SeedStock(Tenant, "8010", "IT-1", "L1", 50m);   // avail=50
        var svc = new InventoryTransactionService(new FakeInventoryUnitOfWorkFactory(db));
        var r = await svc.PostAsync(new[] { Out(-80m) });   // 出 80 > 50
        Assert.Equal(InventoryPostingOutcome.ValidationFailure, r.Outcome);
        Assert.Equal(InventoryGuardCode.IssueExceedsAvail, r.GuardErrors[0].Code);
        Assert.Equal(50m, db.LocationDetail[FakeInventoryDatabase.DetK(Tenant, "8010", "IT-1", "L1", "", "")].AvailStatusQty); // 未变
    }

    // ② C5 composed（ExecuteWithinAsync）：库存不足 → G9 失败，且 writeInventory 未被调用（不写）
    [Fact]
    public async Task C5Composed_ExecuteWithin_G9_Fails_NoWriteIssued()
    {
        var written = false;
        var r = await InventoryTransactionService.ExecuteWithinAsync(
            CtxStocked(50m), new[] { Out(-80m) },
            writeInventory: _ => { written = true; return Task.CompletedTask; });
        Assert.Equal(InventoryPostingOutcome.ValidationFailure, r.Outcome);
        Assert.Equal(InventoryGuardCode.IssueExceedsAvail, r.GuardErrors[0].Code);
        Assert.False(written);   // 守卫先失败 → 未落写（不绕过）
    }

    // ③ Orchestrator 的守卫失败结果来自 C5（GuardErrors 透传自 ExecuteWithinAsync）
    [Fact]
    public async Task Orchestrator_GuardFailure_PropagatesC5GuardErrors()
    {
        var db = new FakeInventoryDatabase();   // 无 master → G2（由 C5 的 ExecuteWithinAsync 判定）
        var orch = new IqcReceiptOrchestrator(new FakeIqcReceiptUnitOfWorkFactory(db));
        var receipt = new IqcAcceptedReceipt
        {
            TenantId = Tenant, DomainCode = "8010", PostingId = 1, TransactionGroupId = 100, RctNbr = "RCT-1",
            ItemNum = "IT-1", Location = "L1", AcceptedQty = 100m, UmConversion = 1m, PurOrd = "PO-1", PurLine = 1, User = "t",
        };
        var gate = new PurchaseReceiptGateInput { HasPendingReceipt = true, AcceptedQty = 100m, HasReceivableDetails = true };
        var r = await orch.PostAsync(receipt, gate);
        Assert.Equal(IqcReceiptOutcome.ValidationFailure, r.Outcome);
        Assert.NotEmpty(r.GuardErrors);                         // 守卫错误来自 C5
        Assert.Equal(InventoryGuardCode.ItemMasterMissing, r.GuardErrors[0].Code);
        Assert.Equal(0, db.TotalPersisted);                     // C6 也回滚
    }
}