"""Cart app service registration."""
from __future__ import annotations


def register_domain_services() -> None:
    """Register services for the cart app.

    Cart owns: Order, OrderItem.
    Standard deployment registers all 4 services as real DB impls
    (shared DB). For composable deployments, swap non-owned services
    with stubs from shared.services.stubs.
    """
    from shared.services.registry import services
    from shared.services.blog_impl import SqlBlogService
    from shared.services.calendar_impl import SqlCalendarService
    from shared.services.market_impl import SqlMarketService
    from shared.services.cart_impl import SqlCartService

    services.cart = SqlCartService()
    if not services.has("blog"):
        services.blog = SqlBlogService()
    if not services.has("calendar"):
        services.calendar = SqlCalendarService()
    if not services.has("market"):
        services.market = SqlMarketService()