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Python

"""One-click setup of the Battery Fleet: an object whose PARTS are battery
types and whose single task aggregates all low batteries.
Design (see helpers/battery_fleet.py for the aggregation): the fleet is ONE
object; each battery TYPE present becomes a tracked spare-part (so the existing
stock/reorder machinery handles "order in time"); ONE task "Replace low
batteries" hangs off the global battery-low count sensor via an ordinary
threshold trigger. No per-battery task.
"""
from __future__ import annotations
from typing import Any
from uuid import uuid4
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import HomeAssistantError
from homeassistant.util import dt as dt_util
from ..const import CONF_OBJECT, CONF_PARTS, CONF_TASKS, DOMAIN
from .battery_fleet import _norm_type, discover_battery_types, lifetime_months, read_batteries
# The global aggregate sensor the fleet task triggers on (fixed entity_id).
LOW_COUNT_ENTITY_ID = "sensor.maintenance_supporter_batteries_to_replace"
# Marker on the object + task so the panel renders the battery detail section
# and setup is idempotent (never a second fleet).
OBJECT_FLAG = "battery_fleet"
TASK_FLAG = "battery_fleet_task"
def find_fleet_entry(hass: HomeAssistant) -> ConfigEntry | None:
"""The existing Battery Fleet object entry, or None."""
for entry in hass.config_entries.async_entries(DOMAIN):
if entry.data.get(CONF_OBJECT, {}).get(OBJECT_FLAG):
return entry
return None
async def async_setup_battery_fleet(hass: HomeAssistant, language: str | None = None) -> dict[str, Any]:
"""Create (or return) the Battery Fleet object with type-parts + the task.
Idempotent: a second call reconciles the type-parts against the current
fleet (adds parts for newly-seen types) and returns the existing entry.
``language`` is the caller's UI language (same contract as the template
WS): the created object/task/part names and notes are localized through
the ``_T`` table, falling back to the server language, then English.
"""
from ..websocket.objects import async_create_object
from ..websocket.tasks_persist import async_persist_task
from .i18n import normalize_language, normalize_language_code
from .parts import normalize_part
lang = normalize_language_code(language) if language else normalize_language(hass)
types = discover_battery_types(hass) # {TYPE: total_qty}
existing = find_fleet_entry(hass)
if existing is not None:
added = _reconcile_type_parts(hass, existing, types, lang)
repaired = await _reconcile_fleet_task(hass, existing, lang)
return {
"entry_id": existing.entry_id,
"created": False,
"types": list(types),
"parts_added": added,
"task_repaired": repaired,
}
from ..templates import localize_template_text
entry_id = await async_create_object(hass, name=localize_template_text("Battery Fleet", lang) or "Battery Fleet")
entry = hass.config_entries.async_get_entry(entry_id)
if entry is None: # pragma: no cover — just created above
raise HomeAssistantError("Battery Fleet object entry vanished after creation")
# Flag the object + attach a type-part per battery type present.
new_data = dict(entry.data)
obj = dict(new_data.get(CONF_OBJECT, {}))
obj[OBJECT_FLAG] = True
new_data[CONF_OBJECT] = obj
parts: dict[str, dict[str, Any]] = {}
for btype, total_qty in types.items():
part = normalize_part(_type_part(btype, total_qty, lang))
parts[part["id"]] = part
new_data[CONF_PARTS] = parts
hass.config_entries.async_update_entry(entry, data=new_data)
# Track stock at 0 for each type (user counts their drawer later).
rd = getattr(entry, "runtime_data", None)
store = getattr(rd, "store", None) if rd else None
if store is not None:
for pid in parts:
store.set_part_stock(pid, 0)
await store.async_save()
# The single aggregate task, triggered by the global low-count sensor.
task = _fleet_task(obj.get("id", ""), lang)
await async_persist_task(hass, entry, task)
return {
"entry_id": entry_id,
"created": True,
"types": list(types),
"parts_added": len(parts),
"task_id": task["id"],
}
def _fleet_trigger_config() -> dict[str, Any]:
"""The canonical fleet-task trigger: threshold >0 on the low-count sensor.
Carries BOTH the singular ``entity_id`` and plural ``entity_ids`` — the
task-dialog's save path gates on the singular field, and a (possibly
cached) frontend that hydrates only ``entity_id`` would otherwise wipe
the trigger on an unrelated edit (issue #106).
"""
return {
"type": "threshold",
"entity_id": LOW_COUNT_ENTITY_ID,
"entity_ids": [LOW_COUNT_ENTITY_ID],
"trigger_above": 0,
"entity_logic": "any",
"auto_complete_on_recovery": True,
}
def _fleet_task(obj_id: str, lang: str) -> dict[str, Any]:
"""The single aggregate fleet task, with localized name + notes."""
from ..templates import localize_template_text
return {
"id": uuid4().hex,
"object_id": obj_id,
"name": localize_template_text("Replace low batteries", lang) or "Replace low batteries",
"type": "inspection",
"enabled": True,
TASK_FLAG: True,
"schedule": {"kind": "manual"},
"trigger_config": _fleet_trigger_config(),
"created_at": dt_util.now().date().isoformat(),
"notes": localize_template_text(
"Aggregate battery check. The detail view lists which devices are low and which battery types to buy.",
lang,
),
}
def _type_part(btype: str, total_qty: int, lang: str) -> dict[str, Any]:
"""A spare-part definition for one battery type (localized name/notes).
reorder_threshold defaults to keeping a spare set roughly the size of the
fleet's need for that type (min 2); restock is double that. auto_buy_task
stays off so setup never spawns extra buy-tasks — the fleet task's detail
is the shopping surface; the user can enable auto-buy per type later.
"""
from ..templates import localize_template_text
threshold = max(2, total_qty)
name_tpl = localize_template_text("{type} battery", lang) or "{type} battery"
notes_tpl = localize_template_text("Typical service life ~{months} months.", lang) or "Typical service life ~{months} months."
return {
"id": f"batt_{btype.lower()}",
"name": name_tpl.format(type=btype),
"unit": "pcs",
"reorder_threshold": threshold,
"restock_quantity": threshold * 2,
"auto_buy_task": False,
"notes": notes_tpl.format(months=lifetime_months(btype)),
}
# ── retranslating the seeded texts (issue #115) ────────────────────────────
#
# Setup writes the object/task/part names and notes ONCE, in the language that
# happened to be current — and nothing ever touched them again, so a fleet set
# up before localized seeding existed (v2.38) keeps English notes forever while
# every runtime string around them is translated. The panel's runtime strings
# follow the UI language; these stored ones can only follow it if something
# rewrites them.
#
# The rule that makes rewriting safe: a stored text is only replaced when it
# EXACTLY matches one of the known template variants (any language), i.e. the
# user never edited it. Anything the user typed stays.
def _template_variants(text_en: str) -> set[str]:
"""The English template plus every translation of it."""
from ..templates_i18n import _T
return {text_en} | set(_T.get(text_en, {}).values())
def _extract_placeholder(stored: str, text_en: str, placeholder: str) -> str | None:
"""The placeholder's value, if ``stored`` matches any variant of the template.
``"AA-batteri"`` against ``"{type} battery"`` finds the Danish variant
``"{type}-batteri"``, matches prefix/suffix and returns ``"AA"``. Returns
None when no variant matches — the user rewrote the text.
"""
token = "{" + placeholder + "}"
for variant in _template_variants(text_en):
prefix, sep, suffix = variant.partition(token)
if not sep:
continue
if stored.startswith(prefix) and stored.endswith(suffix) and len(stored) > len(prefix) + len(suffix):
return stored[len(prefix) : len(stored) - len(suffix)]
return None
def retranslate_seeded_texts(hass: HomeAssistant, entry: ConfigEntry, lang: str) -> bool:
"""Bring untouched seeded texts into ``lang``. Returns True when changed.
Runs at every fleet-entry setup: cheap string comparisons, and idempotent —
once the texts are in the current language they match that language's
variant and are rewritten to themselves.
The boot-time caller passes the SERVER language, so untouched seeded texts
converge on it — the same convention notifications and digests follow,
because stored data is shared by every user of the instance. Seeding still
honours the caller's UI language for the immediate result; if the two
differ, the next reload converges.
"""
from ..templates import localize_template_text
changed = False
data = dict(entry.data)
def _localized(text_en: str) -> str:
return localize_template_text(text_en, lang) or text_en
obj = dict(data.get(CONF_OBJECT) or {})
if obj.get("name") in _template_variants("Battery Fleet") and obj.get("name") != _localized("Battery Fleet"):
obj["name"] = _localized("Battery Fleet")
data[CONF_OBJECT] = obj
changed = True
tasks = dict(data.get(CONF_TASKS) or {})
for task_id, task in tasks.items():
if not task.get(TASK_FLAG):
continue
new_task = dict(task)
if new_task.get("name") in _template_variants("Replace low batteries"):
new_task["name"] = _localized("Replace low batteries")
notes_en = (
"Aggregate battery check. The detail view lists which devices are low "
"and which battery types to buy."
)
if new_task.get("notes") in _template_variants(notes_en):
new_task["notes"] = _localized(notes_en)
if new_task != task:
tasks[task_id] = new_task
data[CONF_TASKS] = tasks
changed = True
parts = dict(data.get(CONF_PARTS) or {})
for part_id, part in parts.items():
if not str(part_id).startswith("batt_"):
continue
new_part = dict(part)
btype = _extract_placeholder(str(new_part.get("name") or ""), "{type} battery", "type")
if btype is not None:
new_part["name"] = (_localized("{type} battery")).format(type=btype)
months = _extract_placeholder(
str(new_part.get("notes") or ""), "Typical service life ~{months} months.", "months"
)
if months is not None:
new_part["notes"] = (_localized("Typical service life ~{months} months.")).format(months=months)
if new_part != part:
parts[part_id] = new_part
data[CONF_PARTS] = parts
changed = True
if changed:
title = (data.get(CONF_OBJECT) or {}).get("name") or entry.title
hass.config_entries.async_update_entry(entry, data=data, title=title)
return changed
def replaced_button_for(battery_plus_entity_id: str) -> str:
"""The Battery Notes 'replaced' button entity id for a battery_plus sensor.
Battery Notes mints them in parallel: sensor.<x>_battery_plus ->
button.<x>_battery_replaced.
"""
return battery_plus_entity_id.replace("sensor.", "button.", 1).replace("_battery_plus", "_battery_replaced")
async def async_mark_replaced(hass: HomeAssistant, entity_ids: list[str] | None = None) -> dict[str, Any]:
"""Mark batteries replaced: press their Battery Notes 'replaced' button
(records the replacement date → resets the forecast) and consume the
matching type-part spares from stock.
``entity_ids`` = battery_plus sensors to mark; default = all currently low.
The fleet task auto-completes on its own once the devices report fresh
(low count → 0), so this does NOT complete the task directly (which would
race that recovery).
"""
by_eid = {b.entity_id: b for b in read_batteries(hass)}
targets = entity_ids if entity_ids is not None else [e for e, b in by_eid.items() if b.low]
pressed = 0
by_type: dict[str, int] = {}
for eid in targets:
bat = by_eid.get(eid)
if bat is None:
continue
button = replaced_button_for(eid)
if hass.states.get(button) is not None:
await hass.services.async_call("button", "press", {"entity_id": button}, blocking=False)
pressed += 1
t = _norm_type(bat.battery_type)
by_type[t] = by_type.get(t, 0) + bat.quantity
consumed: dict[str, int] = {}
fleet = find_fleet_entry(hass)
if fleet is not None and by_type:
from ..parts_runtime import async_change_part_stock
parts = fleet.data.get(CONF_PARTS) or {}
for btype, qty in by_type.items():
pid = f"batt_{btype.lower()}"
if pid in parts:
await async_change_part_stock(hass, fleet, pid, delta=-qty)
consumed[pid] = qty
return {"marked": len(targets), "pressed": pressed, "consumed": consumed}
def set_battery_excluded(hass: HomeAssistant, entity_id: str, excluded: bool) -> bool:
"""Persist a manual exclude/include of one battery on the fleet object.
Issue #107: some tracked batteries should never appear (a rechargeable
device the heuristics missed, a neighbour's sensor, …). Stored as
``battery_fleet_excluded`` on the fleet object dict. Returns False when
no fleet exists yet.
"""
entry = find_fleet_entry(hass)
if entry is None:
return False
new_data = dict(entry.data)
obj = dict(new_data.get(CONF_OBJECT, {}))
current = set(obj.get("battery_fleet_excluded") or [])
if excluded:
current.add(entity_id)
else:
current.discard(entity_id)
obj["battery_fleet_excluded"] = sorted(current)
new_data[CONF_OBJECT] = obj
hass.config_entries.async_update_entry(entry, data=new_data)
return True
def find_fleet_task(entry: ConfigEntry) -> tuple[str, dict[str, Any]] | None:
"""The flagged fleet task (id, data) on the fleet entry, or None."""
for task_id, task_data in (entry.data.get(CONF_TASKS) or {}).items():
if task_data.get(TASK_FLAG):
return task_id, task_data
return None
def fleet_task_trigger_ok(entry: ConfigEntry) -> bool:
"""Whether the fleet task exists and still carries a usable trigger.
A user edit can wipe the trigger (issue #106: the dialog nulled a trigger
stored with only the plural ``entity_ids``); without it the task never
fires or auto-completes. This is the health signal behind the repair path.
"""
found = find_fleet_task(entry)
if found is None:
return False
tc = found[1].get("trigger_config") or {}
eids = tc.get("entity_ids") or ([tc["entity_id"]] if tc.get("entity_id") else [])
return tc.get("type") == "threshold" and LOW_COUNT_ENTITY_ID in eids
async def _reconcile_fleet_task(hass: HomeAssistant, entry: ConfigEntry, lang: str) -> bool:
"""Repair the fleet task if broken. Returns True when something was fixed.
* Trigger lost (issue #106) → restore the canonical threshold trigger,
keeping the user's name/type/translations untouched.
* Task deleted entirely → recreate it fresh (localized).
"""
from ..websocket.tasks_persist import async_persist_task
if fleet_task_trigger_ok(entry):
return False
found = find_fleet_task(entry)
if found is not None:
task_id, task_data = found
new_task = dict(task_data)
new_task["trigger_config"] = _fleet_trigger_config()
new_data = dict(entry.data)
new_tasks = dict(new_data.get(CONF_TASKS, {}))
new_tasks[task_id] = new_task
new_data[CONF_TASKS] = new_tasks
hass.config_entries.async_update_entry(entry, data=new_data)
await hass.config_entries.async_reload(entry.entry_id)
return True
obj = entry.data.get(CONF_OBJECT, {})
await async_persist_task(hass, entry, _fleet_task(obj.get("id", ""), lang))
return True
def _reconcile_type_parts(hass: HomeAssistant, entry: ConfigEntry, types: dict[str, int], lang: str) -> int:
"""Add parts for battery types newly seen since setup. Returns count added."""
from .parts import normalize_part
parts = dict(entry.data.get(CONF_PARTS) or {})
existing_ids = set(parts)
added = 0
for btype, total_qty in types.items():
pid = f"batt_{btype.lower()}"
if pid not in existing_ids:
parts[pid] = normalize_part(_type_part(btype, total_qty, lang))
added += 1
if added:
new_data = dict(entry.data)
new_data[CONF_PARTS] = parts
hass.config_entries.async_update_entry(entry, data=new_data)
return added