"""Billing signals.

Every signal carries ``tenant_id`` explicitly (``TENANCY.md`` §7).
"""

from django.dispatch import Signal

subscription_created = Signal()  # kwargs: tenant_id, plan_slug, app_slug, gateway, external_id
subscription_cancelled = Signal()  # kwargs: tenant_id, plan_slug, reason
subscription_renewed = Signal()  # kwargs: tenant_id, subscription_id
payment_succeeded = Signal()  # kwargs: tenant_id, invoice_id, amount
payment_failed = Signal()  # kwargs: tenant_id, invoice_id, error
invoice_generated = Signal()  # kwargs: tenant_id, invoice_id, amount
invoice_paid = Signal()  # kwargs: tenant_id, invoice_id, amount
entitlement_changed = Signal()  # kwargs: tenant_id, app, status