mirror of
https://github.com/anotherhadi/nixy.git
synced 2026-08-21 10:45:49 +02:00
Hadi
105 lines
2.7 KiB
Bash
105 lines
2.7 KiB
Bash
# battery-monitor — low-battery alerts for waybar/swaync.
|
|
# Sourced by the tests with BATTERY_MONITOR_TEST=1 (defines the functions, skips main).
|
|
# Otherwise runs main once (triggered by the battery-monitor systemd timer).
|
|
|
|
POWER_SUPPLY_DIR="${POWER_SUPPLY_DIR:-/sys/class/power_supply}"
|
|
STATE_FILE="${BATTERY_STATE_FILE:-/tmp/battery-alert-state}"
|
|
CRIT_ID_FILE="${BATTERY_CRIT_ID_FILE:-/tmp/battery-crit-id}"
|
|
|
|
WARN_THRESHOLD=10
|
|
CRIT_THRESHOLD=5
|
|
|
|
# Pure decision. Prints "<action>:<newstate>".
|
|
# action ∈ noop | osd_warn | crit_show | crit_clear ; state ∈ none | warn10 | crit5
|
|
battery_decide() {
|
|
status=$1
|
|
cap=$2
|
|
prev=$3
|
|
|
|
if [ "$status" = "Discharging" ]; then
|
|
if [ "$cap" -le "$CRIT_THRESHOLD" ]; then
|
|
echo "crit_show:crit5"
|
|
elif [ "$cap" -le "$WARN_THRESHOLD" ]; then
|
|
if [ "$prev" = "crit5" ]; then
|
|
echo "crit_clear:warn10"
|
|
elif [ "$prev" = "warn10" ]; then
|
|
echo "noop:warn10"
|
|
else
|
|
echo "osd_warn:warn10"
|
|
fi
|
|
else
|
|
if [ "$prev" = "crit5" ]; then
|
|
echo "crit_clear:none"
|
|
else
|
|
echo "noop:none"
|
|
fi
|
|
fi
|
|
else
|
|
if [ "$prev" = "crit5" ]; then
|
|
echo "crit_clear:none"
|
|
else
|
|
echo "noop:none"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# First real battery (type == Battery, with status + capacity).
|
|
resolve_battery() {
|
|
for d in "$POWER_SUPPLY_DIR"/*; do
|
|
[ -r "$d/type" ] || continue
|
|
[ "$(cat "$d/type")" = "Battery" ] || continue
|
|
[ -r "$d/status" ] && [ -r "$d/capacity" ] || continue
|
|
printf '%s' "$d"
|
|
return 0
|
|
done
|
|
return 1
|
|
}
|
|
|
|
show_warn_osd() {
|
|
waybar-osd " Low battery · $1%"
|
|
}
|
|
|
|
show_crit_notification() {
|
|
cap=$1
|
|
id=$(cat "$CRIT_ID_FILE" 2>/dev/null || echo 0)
|
|
newid=$(notify-send --print-id --replace-id="$id" \
|
|
--urgency=critical --expire-time=0 \
|
|
" Critical battery" "Battery at $cap% — plug in the charger")
|
|
printf '%s' "$newid" > "$CRIT_ID_FILE"
|
|
}
|
|
|
|
clear_crit_notification() {
|
|
id=$(cat "$CRIT_ID_FILE" 2>/dev/null || echo 0)
|
|
if [ "$id" != "0" ]; then
|
|
gdbus call --session \
|
|
--dest org.freedesktop.Notifications \
|
|
--object-path /org/freedesktop/Notifications \
|
|
--method org.freedesktop.Notifications.CloseNotification "$id" \
|
|
>/dev/null 2>&1 || true
|
|
fi
|
|
rm -f "$CRIT_ID_FILE"
|
|
}
|
|
|
|
main() {
|
|
dir=$(resolve_battery) || exit 0
|
|
|
|
status=$(cat "$dir/status")
|
|
cap=$(cat "$dir/capacity")
|
|
prev=$(cat "$STATE_FILE" 2>/dev/null || echo none)
|
|
|
|
result=$(battery_decide "$status" "$cap" "$prev")
|
|
action=${result%%:*}
|
|
newstate=${result##*:}
|
|
|
|
case "$action" in
|
|
osd_warn) show_warn_osd "$cap" ;;
|
|
crit_show) show_crit_notification "$cap" ;;
|
|
crit_clear) clear_crit_notification ;;
|
|
noop) : ;;
|
|
esac
|
|
|
|
printf '%s' "$newstate" > "$STATE_FILE"
|
|
}
|
|
|
|
[ "${BATTERY_MONITOR_TEST:-}" = "1" ] || main "$@"
|