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F-r-ldraledigplannerare/backend/app/services/day_guards.py
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jacobh2 782415122d Separate user intent from planner output via day assertions
The calendar mixed two kinds of truth in one table. `planned_leave_day` was
simultaneously the allocator's output cache, the user's override store
(`is_pinned`, plus ad-hoc rows with no `wish_id`), and the resource ledger that
analytics and the age-4 maths read. The planner therefore had to ask "am I
allowed to touch this row?" on every sync, and got it wrong at the edges.

Every user assertion is now one `day_assertion` row — a concrete `day_type`
replaces a pinned day, a row with no `wish_id` replaces an ad-hoc day, and
`day_type='none'` replaces `planned_day_exclusion`. `planned_leave_day` becomes
purely derived with a single writer, and `PlanningService.pinned_keys()` is the
single answer to "is this day pinned", used by the allocator's loader, by
`sync_plan` and by the read router alike.

On top of that, every calendar band is now a real event: an ad-hoc band opens
the same full editor as a wish-backed one and saving it promotes it to a
`LeaveWish`, so it can be named, repeated yearly, assigned to either or both
parents, and handed to the planner. "Planering" is a `moveable` toggle plus a
from/to month bound plus a separate lock/unlock action on the days themselves,
replacing a three-rung ladder whose "planner decides" rung set a search window
equal to the drawn dates and so could never move anything.

Bugs found and fixed along the way:

- The plan erased its own history. Fixed windows clip to today, so an elapsed
  auto-placed day fell into `stale_keys` and was deleted on the next sync —
  and a background sync runs on every workspace load. Past rows are now frozen
  and counted as spent.
- Migration 010's downgrade silently destroyed every pinned day and exclusion
  (`is_pinned` returned as DEFAULT 0, the exclusion table came back empty,
  exit 0, no warning). It now reconstructs both from `day_assertion`, and 009
  itemises what it cannot recover before dropping the table.
- Deleting a period left its assertions behind, locking those dates forever
  with no UI path to clear them. Wish deletion now clears them by `wish_id`.
- `DayAssertionService` and `LeaveWishService` committed multi-statement writes
  without a transaction; a crash mid-write diverged the tables or half-deleted
  a series. Both now run in a unit of work.
- A sibling year's shortfall was never surfaced: the toast only inspected the
  edited occurrence's outcome, so a fully unfunded later year rendered as an
  empty band with no warning.
- A flexible window whose bound had entirely elapsed was dropped from the
  proposal with no outcome at all. It now reports as `unplaced`.
- Unlocking a period deleted its days instead of returning them to the planner.
- The e2e global setup posted to a route deleted in this change, which would
  have failed the whole suite before its first test.

Gates: backend 938 tests / 91% coverage, frontend 1351 / 97.4 | 92.2 | 94.37 |
97.4. Migrations 009 and 010 audited against a hand-built realistic database:
the upgrade reconciles exactly and a constraint violation fails safe, leaving
the schema at 008.

Not complete. Step 4's toggle, month picker and lock/unlock action are verified
by browser walk and unit tests, but the partial-lock readout was not exercised.
`ideas.md` §7 adds a full plan for the vacation-forfeiture defect (the planner
detects expiring days and then does nothing about them) — not implemented here.
Remaining smaller items are listed in the session's restructure notes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T4wjgbVL4HAC5Rdaw75VbV
2026-09-21 07:20:14 +02:00

56 lines
2.2 KiB
Python

"""Shared write-time guard: a free day can never be `vacation`.
Extracted out of `PlanningService._reject_illegal_free_day` (restructure step
3b) so `DayAssertionService` — which now owns the hand-pin write path too,
see its module docstring — enforces the exact same rule instead of growing
its own copy. A free day (Saturday, Sunday, or Swedish red day, subject to a
workspace's `DayOverride`s — see `allocation_service.is_free_day`, the single
source of truth for "is this day free") can never be persisted as `vacation`,
and may be `sjukpenning`/`lagsta` only when the workspace opted in via
`Workspace.take_pl_on_red_days` (default False).
"""
from datetime import date
from app.entities.workspace import Workspace
from app.services.allocation_service import is_free_day
from app.utils.errors import ValidationError
from app.utils.holidays import get_swedish_holidays
def reject_illegal_free_day(
workspace: Workspace | None,
day_overrides: dict[date, bool],
d: date,
day_type: str,
) -> None:
"""Raise `ValidationError` iff `day_type` may not be planned on `d`.
No-op for any `day_type` other than `sjukpenning`/`lagsta`/`vacation`
(e.g. `'none'`, the exclusion-shaped assertion — excluding a day is
always allowed, free or not) and a no-op entirely when `d` is not a free
day in the first place.
"""
if day_type not in ("vacation", "sjukpenning", "lagsta"):
return
holidays_map = get_swedish_holidays(d.year)
if not is_free_day(d, holidays_map, day_overrides):
return
if day_type == "vacation":
raise ValidationError(
"Vacation cannot be planned on a free day (weekend or red day)",
message_key="planning.rejection.vacationOnFreeDay",
data={"date": d.isoformat()},
)
take_pl_on_red_days = workspace.take_pl_on_red_days if workspace is not None else False
if not take_pl_on_red_days:
raise ValidationError(
"Parental leave cannot be planned on a free day unless the workspace "
"setting take_pl_on_red_days is enabled",
message_key="planning.rejection.parentalLeaveOnFreeDayDisabled",
data={"date": d.isoformat()},
)