feat: complete subscription billing system phases 6-10

Phase 6 - Database-driven tiers:
- Update subscription_service to query database first with legacy fallback
- Add get_tier_info() db parameter and _get_tier_from_legacy() method

Phase 7 - Platform health integration:
- Add get_subscription_capacity() for theoretical vs actual capacity
- Include subscription capacity in full health report

Phase 8 - Background subscription tasks:
- Add reset_period_counters() for billing period resets
- Add check_trial_expirations() for trial management
- Add sync_stripe_status() for Stripe synchronization
- Add cleanup_stale_subscriptions() for maintenance
- Add capture_capacity_snapshot() for daily metrics

Phase 10 - Capacity planning & forecasting:
- Add CapacitySnapshot model for historical tracking
- Create capacity_forecast_service with growth trends
- Add /subscription-capacity, /trends, /recommendations endpoints
- Add /snapshot endpoint for manual captures

Also includes billing API enhancements from phase 4:
- Add upcoming-invoice, change-tier, addon purchase/cancel endpoints
- Add UsageSummary schema for billing page
- Enhance billing.js with addon management functions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
2025-12-26 20:51:13 +01:00
parent b717c23787
commit c6e7f4087f
20 changed files with 1895 additions and 29 deletions

View File

@@ -365,6 +365,224 @@ class BillingService:
return {"message": "Subscription reactivated successfully"}
def get_upcoming_invoice(self, db: Session, vendor_id: int) -> dict:
"""
Get upcoming invoice preview.
Returns:
Dict with amount_due_cents, currency, next_payment_date, line_items
Raises:
NoActiveSubscriptionError: If no subscription with customer ID
"""
subscription = subscription_service.get_subscription(db, vendor_id)
if not subscription or not subscription.stripe_customer_id:
raise NoActiveSubscriptionError()
if not stripe_service.is_configured:
# Return empty preview if Stripe not configured
return {
"amount_due_cents": 0,
"currency": "EUR",
"next_payment_date": None,
"line_items": [],
}
invoice = stripe_service.get_upcoming_invoice(subscription.stripe_customer_id)
if not invoice:
return {
"amount_due_cents": 0,
"currency": "EUR",
"next_payment_date": None,
"line_items": [],
}
line_items = []
if invoice.lines and invoice.lines.data:
for line in invoice.lines.data:
line_items.append({
"description": line.description or "",
"amount_cents": line.amount,
"quantity": line.quantity or 1,
})
return {
"amount_due_cents": invoice.amount_due,
"currency": invoice.currency.upper(),
"next_payment_date": datetime.fromtimestamp(invoice.next_payment_attempt).isoformat()
if invoice.next_payment_attempt
else None,
"line_items": line_items,
}
def change_tier(
self,
db: Session,
vendor_id: int,
new_tier_code: str,
is_annual: bool,
) -> dict:
"""
Change subscription tier (upgrade/downgrade).
Returns:
Dict with message, new_tier, effective_immediately
Raises:
TierNotFoundError: If tier doesn't exist
NoActiveSubscriptionError: If no subscription
StripePriceNotConfiguredError: If price not configured
"""
subscription = subscription_service.get_subscription(db, vendor_id)
if not subscription or not subscription.stripe_subscription_id:
raise NoActiveSubscriptionError()
tier = self.get_tier_by_code(db, new_tier_code)
price_id = (
tier.stripe_price_annual_id
if is_annual and tier.stripe_price_annual_id
else tier.stripe_price_monthly_id
)
if not price_id:
raise StripePriceNotConfiguredError(new_tier_code)
# Update in Stripe
if stripe_service.is_configured:
stripe_service.update_subscription(
subscription_id=subscription.stripe_subscription_id,
new_price_id=price_id,
)
# Update local subscription
old_tier = subscription.tier
subscription.tier = new_tier_code
subscription.tier_id = tier.id
subscription.is_annual = is_annual
subscription.updated_at = datetime.utcnow()
is_upgrade = self._is_upgrade(db, old_tier, new_tier_code)
return {
"message": f"Subscription {'upgraded' if is_upgrade else 'changed'} to {tier.name}",
"new_tier": new_tier_code,
"effective_immediately": True,
}
def _is_upgrade(self, db: Session, old_tier: str, new_tier: str) -> bool:
"""Check if tier change is an upgrade."""
old = db.query(SubscriptionTier).filter(SubscriptionTier.code == old_tier).first()
new = db.query(SubscriptionTier).filter(SubscriptionTier.code == new_tier).first()
if not old or not new:
return False
return new.display_order > old.display_order
def purchase_addon(
self,
db: Session,
vendor_id: int,
addon_code: str,
domain_name: str | None,
quantity: int,
success_url: str,
cancel_url: str,
) -> dict:
"""
Create checkout session for add-on purchase.
Returns:
Dict with checkout_url and session_id
Raises:
PaymentSystemNotConfiguredError: If Stripe not configured
AddonNotFoundError: If addon doesn't exist
"""
if not stripe_service.is_configured:
raise PaymentSystemNotConfiguredError()
addon = (
db.query(AddOnProduct)
.filter(
AddOnProduct.code == addon_code,
AddOnProduct.is_active == True, # noqa: E712
)
.first()
)
if not addon:
raise BillingServiceError(f"Add-on '{addon_code}' not found")
if not addon.stripe_price_id:
raise BillingServiceError(f"Stripe price not configured for add-on '{addon_code}'")
vendor = self.get_vendor(db, vendor_id)
subscription = subscription_service.get_or_create_subscription(db, vendor_id)
# Create checkout session for add-on
session = stripe_service.create_checkout_session(
db=db,
vendor=vendor,
price_id=addon.stripe_price_id,
success_url=success_url,
cancel_url=cancel_url,
quantity=quantity,
metadata={
"addon_code": addon_code,
"domain_name": domain_name or "",
},
)
return {
"checkout_url": session.url,
"session_id": session.id,
}
def cancel_addon(self, db: Session, vendor_id: int, addon_id: int) -> dict:
"""
Cancel a purchased add-on.
Returns:
Dict with message and addon_code
Raises:
BillingServiceError: If addon not found or not owned by vendor
"""
vendor_addon = (
db.query(VendorAddOn)
.filter(
VendorAddOn.id == addon_id,
VendorAddOn.vendor_id == vendor_id,
)
.first()
)
if not vendor_addon:
raise BillingServiceError("Add-on not found")
addon_code = vendor_addon.addon_product.code
# Cancel in Stripe if applicable
if stripe_service.is_configured and vendor_addon.stripe_subscription_item_id:
try:
stripe_service.cancel_subscription_item(vendor_addon.stripe_subscription_item_id)
except Exception as e:
logger.warning(f"Failed to cancel addon in Stripe: {e}")
# Mark as cancelled
vendor_addon.status = "cancelled"
vendor_addon.cancelled_at = datetime.utcnow()
return {
"message": "Add-on cancelled successfully",
"addon_code": addon_code,
}
# Create service instance
billing_service = BillingService()