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HomeAssistantVS/custom_components/maintenance_supporter/helpers/vacation.py
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Python

"""Vacation mode (v1.2.0).
Suppresses notifications for non-exempt tasks during a configured date range
plus a buffer (so a task that comes due the day of return doesn't fire
immediately). Sensor-triggered notifications are suppressed too unless the
task is on the exempt list.
The exempt list lives at the global config-entry level — it is *persistent*
across vacations, not per-vacation. Use case: pool chemistry that the
neighbour checks regardless of whether you're away.
"""
from __future__ import annotations
from collections.abc import Iterable, Mapping
from dataclasses import dataclass, field
from datetime import date, datetime, timedelta
from typing import TYPE_CHECKING, Any
from homeassistant.util import dt as dt_util
from ..const import (
CONF_VACATION_BUFFER_DAYS,
CONF_VACATION_ENABLED,
CONF_VACATION_END,
CONF_VACATION_EXEMPT_TASK_IDS,
CONF_VACATION_START,
DEFAULT_VACATION_BUFFER_DAYS,
DEFAULT_WARNING_DAYS,
DOMAIN,
GLOBAL_UNIQUE_ID,
ScheduleType,
)
from .dates import parse_iso_date, try_add_interval
from .pause import is_task_inert
from .status import effective_warning_days
if TYPE_CHECKING:
from homeassistant.core import HomeAssistant
from ..models.maintenance_task import MaintenanceTask
@dataclass(frozen=True)
class VacationState:
"""Frozen snapshot of vacation config.
Frozen so callers can pass it around without worrying about mutation
during a notification-decision window.
"""
enabled: bool
start: date | None
end: date | None
buffer_days: int
exempt_task_ids: frozenset[str] = field(default_factory=frozenset)
@property
def window_end(self) -> date | None:
"""Last day on which suppression still applies (inclusive)."""
if self.end is None:
return None
try:
return self.end + timedelta(days=max(0, self.buffer_days))
except OverflowError:
# An end date of 9999-12-31 plus the buffer overflowed, and
# is_silent_for runs inside every object's refresh — the object
# went unavailable for the whole vacation (bug audit 2026-09-27).
# The window simply never ends.
return date.max
def is_active(self, at: datetime | None = None) -> bool:
"""True if today falls within [start, end + buffer] and the toggle is on."""
if not self.enabled or self.start is None or self.end is None:
return False
today = (at or dt_util.now()).date()
return self.start <= today <= (self.window_end or self.end)
def is_silent_for(self, task_id: str, at: datetime | None = None) -> bool:
"""Return True if a notification for *task_id* must be suppressed.
Suppressed iff vacation is currently active AND the task is not in
the exempt list. Exempt tasks fire normally even during vacation.
"""
if not self.is_active(at):
return False
return task_id not in self.exempt_task_ids
def as_wire_dict(self) -> dict[str, Any]:
"""Serialise for the WS wire. Single source for /vacation/state and the
/settings vacation embed, so the two can never drift."""
return {
"enabled": self.enabled,
"start": self.start.isoformat() if self.start else None,
"end": self.end.isoformat() if self.end else None,
"buffer_days": self.buffer_days,
"exempt_task_ids": sorted(self.exempt_task_ids),
"is_active": self.is_active(),
"window_end": self.window_end.isoformat() if self.window_end else None,
}
@classmethod
def from_options(cls, options: Mapping[str, Any]) -> VacationState:
"""Build a VacationState from a global-entry options mapping.
Same coercion rules as :func:`get_vacation_state` but from an already
resolved options dict (used by the /settings embed, which may be passed
an empty mapping when no global entry exists).
"""
raw_exempt = options.get(CONF_VACATION_EXEMPT_TASK_IDS) or []
exempt: list[str] = []
if isinstance(raw_exempt, list):
for x in raw_exempt:
if isinstance(x, str):
stripped = x.strip()
if stripped and len(stripped) <= 64:
exempt.append(stripped)
return cls(
enabled=bool(options.get(CONF_VACATION_ENABLED, False)),
start=_coerce_date(options.get(CONF_VACATION_START)),
end=_coerce_date(options.get(CONF_VACATION_END)),
buffer_days=_coerce_buffer(options.get(CONF_VACATION_BUFFER_DAYS, DEFAULT_VACATION_BUFFER_DAYS)),
exempt_task_ids=frozenset(exempt),
)
def _coerce_date(value: Any) -> date | None:
"""Parse an ISO YYYY-MM-DD string from config; tolerant of None / junk."""
return parse_iso_date(value)
def _coerce_buffer(value: Any) -> int:
try:
i = int(value)
except (TypeError, ValueError):
return DEFAULT_VACATION_BUFFER_DAYS
if i < 0 or i > 14:
return DEFAULT_VACATION_BUFFER_DAYS
return i
def _task_warning_days(task: Mapping[str, Any]) -> int:
"""warning_days for a stored task, defaulting when missing/blank/invalid.
Missing (or blank/non-numeric from legacy/imported storage) → the default;
a real value (including 0) is kept. Never raises on a non-int value.
"""
value = task.get("warning_days")
if value is None or value == "":
return DEFAULT_WARNING_DAYS
try:
return int(value)
except (TypeError, ValueError):
return DEFAULT_WARNING_DAYS
def _global_options(hass: HomeAssistant) -> Mapping[str, Any]:
"""Return options dict from the global config entry."""
for entry in hass.config_entries.async_entries(DOMAIN):
if entry.unique_id == GLOBAL_UNIQUE_ID:
return entry.options or entry.data
return {}
def get_vacation_state(hass: HomeAssistant) -> VacationState:
"""Read the current vacation state from the global config entry."""
return VacationState.from_options(_global_options(hass))
# ---------------------------------------------------------------------------
# Preview
# ---------------------------------------------------------------------------
@dataclass(frozen=True)
class PreviewEvent:
"""A single projected status transition during the vacation window."""
date: date
status: str # "due_soon" | "overdue" | "triggered_est"
def _events_from_next_due(
next_due: date,
warning_days: int,
today: date,
window_start: date,
window_end: date,
) -> list[PreviewEvent]:
"""DUE_SOON / OVERDUE preview events for a single next-due date. Shared by
the interval and calendar projections (DRY)."""
due_soon_from = next_due - timedelta(days=max(0, warning_days))
events: list[PreviewEvent] = []
if window_start <= due_soon_from <= window_end and due_soon_from > today:
events.append(PreviewEvent(date=due_soon_from, status="due_soon"))
if window_start <= next_due <= window_end and next_due > today:
events.append(PreviewEvent(date=next_due, status="overdue"))
# Edge: task is already DUE_SOON or OVERDUE today and stays in that state
# — surface as a "today" event so the user can act on it before leaving.
if not events:
if today >= next_due and today <= window_end:
events.append(PreviewEvent(date=today, status="overdue"))
elif today >= due_soon_from and today <= window_end and due_soon_from <= today < next_due:
events.append(PreviewEvent(date=today, status="due_soon"))
return events
def _project_time_based(
last_performed: date | None,
created_at: date | None,
interval_days: int | None,
warning_days: int,
today: date,
window_start: date,
window_end: date,
interval_unit: str | None = None,
) -> list[PreviewEvent]:
"""Project DUE_SOON / OVERDUE dates for a bare interval (no task model).
Kept for callers that only hold the flat numbers; the preview itself goes
through :func:`task_next_due` so postpones, seasons and the planned anchor
are honoured.
"""
if not interval_days or interval_days <= 0:
return []
anchor = last_performed or created_at or today
# Unit-aware (weeks/months/years), not raw days — else a 6-month task would
# preview as due in 6 days during vacation planning. A due date past the
# calendar's end is no event (bug audit 2026-09-27).
next_due = try_add_interval(anchor, interval_days, interval_unit or "days")
if next_due is None:
return []
return _events_from_next_due(next_due, warning_days, today, window_start, window_end)
def task_next_due(task: MaintenanceTask, today: date) -> date | None:
"""``MaintenanceTask.next_due`` evaluated for an explicit *today*.
The preview used to re-derive the due date from the flat interval fields
and so ignored a postpone (``due_override``), the seasonal window, the
planned anchor, a finite series and every one-time task (bug audit
2026-09-26, DRY BR-A1). It now asks the task's own Schedule with exactly
the inputs the model property uses; only *today* (the first-time anchor)
is injectable. ``tests/test_audit_2026_09_26_t2_runtime.py`` pins this to
the property for today == now.
"""
last: date | None = None
if task.last_performed:
try:
last = date.fromisoformat(task.last_performed)
except (ValueError, TypeError):
return None # the model's "malformed anchor = no next_due" rule
return task._schedule().next_due(
last_performed=last,
created_at=parse_iso_date(task.created_at),
last_planned_due=parse_iso_date(task.last_planned_due),
today=today,
times_performed=task.times_performed,
due_override=parse_iso_date(task.due_override),
)
def compute_preview(
state: VacationState,
tasks: Iterable[Mapping[str, Any]],
today: date | None = None,
) -> list[dict[str, Any]]:
"""Project status changes for each task during [start, end+buffer].
Each input *task* is the task's merged storage dict (static config +
Store state, exactly what ``MaintenanceTask.from_dict`` reads) plus the
row identity ``task_id``, ``entry_id``, ``object_name``, ``task_name``.
The caller drops tasks of paused objects (it holds the object dict);
archived and disabled tasks are dropped here as well.
Returns a list of preview rows; tasks with no projected events in the
window are omitted (caller may still want to display the task list
elsewhere).
"""
from ..models.maintenance_task import MaintenanceTask # models import helpers
if state.start is None or state.end is None:
return []
today = today or dt_util.now().date()
window_start = max(state.start, today)
window_end = state.window_end or state.end
if window_end < window_start:
return []
rows: list[dict[str, Any]] = []
for t in tasks:
# Archived / disabled tasks never fire — the preview listed archived
# ones as "will be due" (bug audit 2026-09-26). Paused objects are the
# caller's half of the same predicate.
if is_task_inert(dict(t), {}):
continue
task_id = str(t.get("task_id") or "")
if not task_id:
continue
task = MaintenanceTask.from_dict(dict(t))
schedule_type = task.schedule_type
events: list[PreviewEvent] = []
kind: str
confidence: str
if schedule_type == ScheduleType.SENSOR_BASED:
# Sensor triggers are non-deterministic. Surface every sensor task
# in the window with a single "may fire anytime" event so the user
# can decide per-task whether to exempt or pre-complete.
events = [PreviewEvent(date=window_start, status="triggered_est")]
kind = "sensor_based"
confidence = "unpredictable"
else:
# Interval, calendar kinds and one-time tasks: the task's own next
# due date and its span-capped warning window — the same inputs
# the status ladder uses, so a weekly task with a 14-day warning
# doesn't preview as "due soon" for two weeks. Manual tasks (and a
# finished series / done one-off) have no next due and drop out.
nd = task_next_due(task, today)
if nd is None:
continue
warning = effective_warning_days(_task_warning_days(t), task._schedule().span_days())
events = _events_from_next_due(nd, warning, today, window_start, window_end)
kind = schedule_type
confidence = "deterministic"
if not events:
continue
rows.append(
{
"task_id": task_id,
"entry_id": t.get("entry_id"),
"object_name": t.get("object_name") or "",
"task_name": t.get("task_name") or "",
"kind": kind,
"confidence": confidence,
"events": [{"date": e.date.isoformat(), "status": e.status} for e in events],
"will_suppress": task_id not in state.exempt_task_ids,
# Absent = allowed, mirroring the task payload (#150).
"allow_skip": t.get("allow_skip") is not False,
}
)
# Stable ordering: object name then task name, matches #40 sort
rows.sort(key=lambda r: ((r["object_name"] or "").lower(), (r["task_name"] or "").lower()))
return rows