battery: van-battery daemon (low-charge Pushover alerts + safe shutdown)

While on battery (AC0/online=0), sends escalating Pushover alerts at 25/20/15%
and at 10% sends a final alert then `systemctl poweroff` (after shutdown_grace
so the alert flushes first). Edge-triggered per discharge episode; re-arms when
mains returns; plug-out already-low collapses to a single alert (no burst).

Pushover token+user live only in /etc/van-battery/pushover.json (0600), seeded
from pushover.json.example on first deploy and never committed. Missing/
placeholder creds disable sending but NOT the shutdown — running flat must
always power down safely. Publishes /run/van-battery/state.json. Stdlib only.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

This commit is contained in:

Andreas Wrede

2026-06-28 21:48:24 -04:00

co-authored by

Claude Opus 4.8

parent ef6c1ce182

commit b75b5b16c7

6 changed files with 273 additions and 3 deletions

power/pushover.json.example

View File

@@ -0,0 +1,4 @@
 {
   "token": "REPLACE_ME",
   "user": "REPLACE_ME"
 }