from decimal import Decimal
from app.services import product_service
from app.services import category_service
from app.schemas.product import ProductCreate
from app.schemas.category import CategoryCreate


def test_create_and_get_product(db):
    cat = category_service.create_category(db, CategoryCreate(name="Cat Test"))
    prod = product_service.create_product(
        db,
        ProductCreate(
            sku="SKU-001",
            name="Producto Test",
            price=Decimal("19.99"),
            category_id=cat.id,
        ),
    )
    assert prod.id is not None
    assert prod.sku == "SKU-001"


def test_low_stock_alert(db):
    prod = product_service.create_product(
        db,
        ProductCreate(
            sku="LOW-001",
            name="Stock Bajo",
            price=Decimal("5.00"),
            min_stock=10,
            current_stock=3,
        ),
    )
    low = product_service.get_low_stock_products(db)
    assert any(p.id == prod.id for p in low)


def test_product_pagination(db):
    for i in range(25):
        product_service.create_product(
            db,
            ProductCreate(sku=f"SKU-{i}", name=f"Prod {i}", price=Decimal("1.00")),
        )
    page1 = product_service.get_products(db, skip=0, limit=10)
    page2 = product_service.get_products(db, skip=10, limit=10)
    assert len(page1) == 10
    assert len(page2) == 10