Bernard Siebens
60bfac9881
RosterChief charging the clubs, which is a different domain from `shop` (a club charging its members). Nothing here is club-scoped: these rows reference a Club, they are not owned by one, and no club user ever sees them. - Tier + TierPrice. Prices are dated, not keyed by year: a rate change is one row with a future active_from, and price_on(day) answers "what was in force then". A tier with no price yet returns None, which callers must treat as "cannot bill" -- never as free. - Due: one rolling-year period per club, with a 45-day grace tail. The tier and the amount are SNAPSHOTS taken when the period opens. Raise the price and last year's period must still say what was actually charged; reading it back through the tier would silently rewrite financial history. - DuePayment: partial payments accumulate. amount_paid is re-summed from the payments on every change, never incremented -- an increment drifts the moment a payment is deleted, and the drift still looks like money. - Invoice: PDF via WeasyPrint, rendered on demand from the frozen snapshot. Only the number is stored, in one platform-wide series (unlike the shop's per-club order numbers), and re-issuing returns the existing one rather than burning a number -- a gap in an invoice series is a question you don't want to answer. WeasyPrint is imported lazily: it binds to native pango/cairo, and the app, the tests and every other page must still run on a machine without them. - archive_overdue_clubs reports by default and archives only with --commit. That asymmetry is deliberate: this switches off paying customers, so a bad clock or a cron misconfiguration should cost an email, not a morning of angry clubs. A club with auto_archive off is spared entirely. Renewal continues from the last period end, not from the payment date: a club that pays two months late has still used those two months. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
7 lines
228 B
Python
7 lines
228 B
Python
class BillingError(Exception):
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"""A billing action that must not silently half-happen.
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Lives here rather than in dues.py so invoices.py can raise it without the two modules
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importing each other in a circle.
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"""
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