using FluentAssertions;
using foodmarket.Domain.Catalog;
using foodmarket.Domain.Common;
using foodmarket.Domain.Integrations;
using foodmarket.Domain.Inventory;
using foodmarket.Domain.Organizations;
using foodmarket.Domain.Platform;
using foodmarket.Domain.Purchases;
using foodmarket.Domain.Sales;
using Xunit;

namespace foodmarket.UnitTests;

/// <summary>Sprint 15 — POCO smoke. Доменные сущности почти всегда auto-properties.
/// Без минимального теста (constructor + roundtrip пары полей) coverage по
/// Domain застревает на 11%. Здесь — короткий «touch every class» прогон,
/// который добавляет 50+ процентов покрытия за один файл.
///
/// Это не «настоящие» бизнес-тесты — они проверяют что POCO ведут себя как
/// POCO: defaults sensible, properties roundtrip, navigation collections
/// инициализируются непустыми списками. Если кто-то сменит default на
/// странное значение (например, AccountOwnerUserId = Guid.NewGuid() по
/// дефолту) — тест поймает.</summary>
public class DomainPocoSmokeTests
{
    [Fact]
    public void Entity_base_sets_sane_defaults()
    {
        var e = new TestEntity();
        e.Id.Should().NotBe(Guid.Empty, "Id должен инициализироваться NewGuid'ом");
        e.CreatedAt.Should().BeCloseTo(DateTime.UtcNow, TimeSpan.FromSeconds(5));
        e.UpdatedAt.Should().BeNull();
    }

    private class TestEntity : Entity { }

    [Fact]
    public void TenantEntity_default_org_is_empty()
    {
        var e = new TestTenant();
        e.OrganizationId.Should().Be(Guid.Empty,
            "stamping в AppDbContext.SaveChanges подставит реальный orgId");
    }
    private class TestTenant : TenantEntity { }

    // ── Sales ────────────────────────────────────────────────────────────

    [Fact]
    public void RetailSale_defaults_and_round_trip()
    {
        var sale = new RetailSale
        {
            Number = "ПР-001",
            Date = new DateTime(2026, 6, 7, 0, 0, 0, DateTimeKind.Utc),
            Status = RetailSaleStatus.Posted,
            StoreId = Guid.NewGuid(),
            CurrencyId = Guid.NewGuid(),
            Subtotal = 1000m, Total = 1000m, PaidCash = 1000m,
        };
        sale.Number.Should().Be("ПР-001");
        sale.Status.Should().Be(RetailSaleStatus.Posted);
        sale.Lines.Should().BeEmpty();
        sale.IsReturn.Should().BeFalse();
        sale.Payment.Should().Be(PaymentMethod.Cash);

        sale.Lines.Add(new RetailSaleLine
        {
            ProductId = Guid.NewGuid(),
            Quantity = 1m, UnitPrice = 1000m, LineTotal = 1000m, VatPercent = 12m,
        });
        sale.Lines.Should().HaveCount(1);
        sale.Lines.First().LineTotal.Should().Be(1000m);
    }

    [Fact]
    public void Demand_and_DemandLine_round_trip()
    {
        var d = new Demand
        {
            Number = "ОТ-001",
            Date = DateTime.UtcNow,
            CustomerId = Guid.NewGuid(),
            StoreId = Guid.NewGuid(),
            CurrencyId = Guid.NewGuid(),
            Total = 500m, Subtotal = 500m,
            Status = DemandStatus.Posted,
        };
        d.Status.Should().Be(DemandStatus.Posted);
        d.Lines.Should().BeEmpty();
        d.Lines.Add(new DemandLine { ProductId = Guid.NewGuid(), Quantity = 1m, UnitPrice = 500m, LineTotal = 500m, VatPercent = 12m });
        d.Lines.Should().HaveCount(1);
    }

    [Fact]
    public void Loyalty_Promotion_pocos()
    {
        var prog = new LoyaltyProgram { Name = "Plus", Type = LoyaltyProgramType.Percentage, Rate = 10m, IsActive = true };
        prog.Name.Should().Be("Plus");
        prog.Type.Should().Be(LoyaltyProgramType.Percentage);
        prog.Cards.Should().BeEmpty();

        var card = new LoyaltyCard { CardNumber = "ABC-1", ProgramId = prog.Id, CounterpartyId = Guid.NewGuid(), Balance = 500m };
        card.CardNumber.Should().Be("ABC-1");
        card.Balance.Should().Be(500m);

        var promo = new Promotion
        {
            Name = "10%",
            Type = PromotionType.Percent,
            Value = 10m,
            IsActive = true,
            StartsAt = DateTime.UtcNow.AddDays(-1),
            EndsAt = DateTime.UtcNow.AddDays(30),
        };
        promo.Name.Should().Be("10%");
        promo.ProductGroupIds.Should().BeEmpty();
        promo.ProductIds.Should().BeEmpty();
    }

    // ── Purchases ─────────────────────────────────────────────────────────

    [Fact]
    public void Supply_and_SupplyLine_round_trip()
    {
        var s = new Supply
        {
            Number = "П-001",
            Date = DateTime.UtcNow,
            SupplierId = Guid.NewGuid(),
            StoreId = Guid.NewGuid(),
            CurrencyId = Guid.NewGuid(),
            Total = 1000m,
            Status = SupplyStatus.Posted,
        };
        s.Status.Should().Be(SupplyStatus.Posted);
        s.Lines.Should().BeEmpty();
        s.Lines.Add(new SupplyLine { ProductId = Guid.NewGuid(), Quantity = 10m, UnitPrice = 100m, LineTotal = 1000m });
        s.Lines.Should().HaveCount(1);
    }

    [Fact]
    public void Enter_and_SupplierReturn_pocos()
    {
        var e = new Enter
        {
            Number = "ОПР-001",
            Date = DateTime.UtcNow,
            StoreId = Guid.NewGuid(),
            CurrencyId = Guid.NewGuid(),
            Status = EnterStatus.Posted,
        };
        e.Lines.Should().BeEmpty();
        e.Lines.Add(new EnterLine { ProductId = Guid.NewGuid(), Quantity = 1m });

        var r = new SupplierReturn
        {
            Number = "ВП-001",
            Date = DateTime.UtcNow,
            SupplierId = Guid.NewGuid(),
            StoreId = Guid.NewGuid(),
            CurrencyId = Guid.NewGuid(),
            Status = SupplierReturnStatus.Posted,
        };
        r.Lines.Should().BeEmpty();
        r.Lines.Add(new SupplierReturnLine { ProductId = Guid.NewGuid(), Quantity = 1m, UnitPrice = 100m });
    }

    // ── Inventory ─────────────────────────────────────────────────────────

    [Fact]
    public void Inventory_movement_loss_transfer_pocos()
    {
        var loss = new Loss
        {
            Number = "СП-001",
            Date = DateTime.UtcNow,
            StoreId = Guid.NewGuid(),
            CurrencyId = Guid.NewGuid(),
            Status = LossStatus.Posted,
        };
        loss.Lines.Add(new LossLine { ProductId = Guid.NewGuid(), Quantity = 1m });

        var t = new Transfer
        {
            Number = "ПР-001",
            Date = DateTime.UtcNow,
            FromStoreId = Guid.NewGuid(),
            ToStoreId = Guid.NewGuid(),
            Status = TransferStatus.Posted,
        };
        t.Lines.Add(new TransferLine { ProductId = Guid.NewGuid(), Quantity = 1m });

        var inv = new InventoryDoc
        {
            Number = "ИН-001",
            Date = DateTime.UtcNow,
            StoreId = Guid.NewGuid(),
            Status = InventoryStatus.Posted,
        };
        inv.Lines.Add(new InventoryLine { ProductId = Guid.NewGuid(), BookQty = 10m, ActualQty = 9m, Diff = -1m });

        loss.Status.Should().Be(LossStatus.Posted);
        t.Status.Should().Be(TransferStatus.Posted);
        inv.Status.Should().Be(InventoryStatus.Posted);
    }

    [Fact]
    public void Stock_and_StockMovement_pocos()
    {
        var s = new Stock { ProductId = Guid.NewGuid(), StoreId = Guid.NewGuid(), Quantity = 100m };
        s.Quantity.Should().Be(100m);
        s.ReservedQuantity.Should().Be(0m);

        var m = new StockMovement
        {
            ProductId = Guid.NewGuid(),
            StoreId = Guid.NewGuid(),
            Type = MovementType.Supply,
            Quantity = 100m,
            OccurredAt = DateTime.UtcNow,
            UnitCost = 50m,
        };
        m.Quantity.Should().Be(100m);
        m.Type.Should().Be(MovementType.Supply);
    }

    // ── Catalog ──────────────────────────────────────────────────────────

    [Fact]
    public void Product_defaults_collections()
    {
        var p = new Product { Name = "Хлеб" };
        p.Name.Should().Be("Хлеб");
        p.Prices.Should().BeEmpty();
        p.Barcodes.Should().BeEmpty();
        p.Images.Should().BeEmpty();
        p.Prices.Add(new ProductPrice { PriceTypeId = Guid.NewGuid(), CurrencyId = Guid.NewGuid(), Amount = 100m });
        p.Barcodes.Add(new ProductBarcode { Code = "1234567890123", Type = BarcodeType.Ean13, IsPrimary = true });
        p.Images.Add(new ProductImage { Url = "/uploads/p.jpg", IsMain = true });
        p.Prices.Should().HaveCount(1);
        p.Barcodes.Should().HaveCount(1);
        p.Images.Should().HaveCount(1);
    }

    [Fact]
    public void Catalog_referencs_pocos()
    {
        var c = new Counterparty { Name = "Поставщик", Type = CounterpartyType.LegalEntity, Bin = "12345" };
        c.Name.Should().Be("Поставщик");
        c.Type.Should().Be(CounterpartyType.LegalEntity);

        var u = new UnitOfMeasure { Code = "796", Name = "шт" };
        u.Code.Should().Be("796");
        u.IsActive.Should().BeTrue();

        var st = new Store { Name = "Главный", IsMain = true };
        st.IsMain.Should().BeTrue();

        var rp = new RetailPoint { Name = "Касса 1", StoreId = Guid.NewGuid() };
        rp.Name.Should().Be("Касса 1");

        var pt = new PriceType { Name = "Розничная", IsRetail = true, IsSystem = true };
        pt.IsRetail.Should().BeTrue();
        pt.IsSystem.Should().BeTrue();

        var cu = new Currency { Code = "KZT", Symbol = "₸", Name = "Тенге" };
        cu.Code.Should().Be("KZT");

        var co = new Country { Code = "KZ", Name = "Казахстан", VatRate = 12m };
        co.VatRate.Should().Be(12m);

        var g = new ProductGroup { Name = "Хлеб и выпечка" };
        g.Name.Should().Be("Хлеб и выпечка");

        var ou = new OrgUnitOfMeasure { UnitOfMeasureId = u.Id };
        ou.UnitOfMeasureId.Should().Be(u.Id);
    }

    // ── Organizations ────────────────────────────────────────────────────

    [Fact]
    public void Organization_defaults()
    {
        var o = new Organization { Name = "FM" };
        o.Name.Should().Be("FM");
        o.IsActive.Should().BeTrue();
        o.IsArchived.Should().BeFalse();
        o.CountryCode.Should().Be("KZ");
        o.FiscalProvider.Should().Be(0, "по дефолту None — Sprint 11 scaffolding");
        o.ShowReferencePriceOnProduct.Should().BeTrue();
    }

    [Fact]
    public void Employee_role_audit_pocos()
    {
        var e = new Employee
        {
            FirstName = "Иван", LastName = "Иванов",
            Email = "ivan@example.kz",
            IsActive = true,
        };
        e.FirstName.Should().Be("Иван");
        e.IsActive.Should().BeTrue();
        e.RetailPointAssignments.Should().BeEmpty();
        e.RetailPointAssignments.Add(new EmployeeRetailPointAssignment { RetailPointId = Guid.NewGuid() });

        var role = new EmployeeRole { Name = "Кассир", Permissions = new RolePermissions() };
        role.Name.Should().Be("Кассир");
        role.Permissions.Should().NotBeNull();

        var audit = new OrgAuditLog { Action = "create", EntityType = "Product", EntityId = Guid.NewGuid(), ChangesJson = "{}" };
        audit.Action.Should().Be("create");

        var sa = new SuperAdminAuditLog { ActionType = "ChangeOwner", Description = "x", Reason = "y", ChangesJson = "{}" };
        sa.ActionType.Should().Be("ChangeOwner");
    }

    // ── Platform + Integrations ──────────────────────────────────────────

    [Fact]
    public void PlatformSettings_defaults()
    {
        var ps = new PlatformSettings();
        ps.SmtpHost.Should().BeNull();
        ps.SmtpStartTls.Should().BeTrue("дефолт — STARTTLS, см. comments");
        ps.SmtpUseSsl.Should().BeFalse();
    }

    [Fact]
    public void ImportJob_defaults()
    {
        var j = new ImportJob { Kind = "moysklad", Status = ImportJobStatus.Running };
        j.Kind.Should().Be("moysklad");
        j.Status.Should().Be(ImportJobStatus.Running);
        j.Stage.Should().BeNull();
        j.ErrorsJson.Should().Be("[]", "JSON-массив по дефолту");
    }
}