Files
mesh-catalog/modules/i3status-rust/files/bin/i3status-updates
T
jochen 838e1c2616 i3status-rust: the bars as a module, claiming node-bar (hq ADR 0208)
Owns both bars and their icons, the bar blocks as an i3 drop-in; the battery,
GPU and headset blocks leave (hardware and a person's devices), the weather needs
no key; the update count and the bar watchdog become module code, the watchdog
started once per session. Go tools reload, blocks, block-run and themes.
2026-10-04 13:15:39 +02:00

64 lines
2.1 KiB
Bash
Executable File

#!/usr/bin/env bash
# i3status-updates [threshold] (module i3status-rust, novox/hq ADR 0208): the pending updates, for
# the bottom bar's custom block (json = true). Emits one JSON line.
#
# Adopted from the operator's pkg-updates of 2026-10-04. The native `packages` block showed a raw
# red error on every transient network failure, which on a roaming laptop is often. This keeps the
# last good result through a failure and shows an error only after `threshold` failures in a row
# (default 10). Official packages through checkupdates (pacman-contrib, a temporary database, no
# root); AUR packages through paru when it is installed, and none counted when it is not.
set -uo pipefail
threshold="${1:-10}"
icon="update"
state_dir="${XDG_RUNTIME_DIR:-/tmp}/i3status-updates"
mkdir -p "$state_dir"
last="$state_dir/last_good.json"
failures="$state_dir/failures"
json() { printf '{"icon":"%s","state":"%s","text":"%s","short_text":"%s"}' "$icon" "$1" "$2" "$3"; }
count() { [ -n "$1" ] && printf '%s\n' "$1" | grep -c . || echo 0; }
official="$(checkupdates 2>/dev/null)"
official_rc=$?
aur="" aur_rc=0
if command -v paru >/dev/null 2>&1; then
aur="$(paru -Qua 2>/dev/null)"
aur_rc=$?
fi
# checkupdates: 0 updates listed, 2 none pending; anything else is a failure.
if { [ "$official_rc" -eq 0 ] || [ "$official_rc" -eq 2 ]; } && [ "$aur_rc" -eq 0 ]; then
o="$(count "$official")"
a="$(count "$aur")"
total=$((o + a))
if [ "$total" -eq 0 ]; then
payload="$(json Good "up to date" "")"
else
# A kernel update wants a reboot: the one worth not putting off.
state=Info
printf '%s\n' "$official" | grep -qE '^(linux|linux-lts|linux-zen) ' && state=Warning
label="$o + $a = $total updates"
[ "$a" -eq 0 ] && label="$total updates"
[ "$total" -eq 1 ] && label="1 update"
payload="$(json "$state" "$label" "$total")"
fi
printf '%s' "$payload" >"$last"
printf '0' >"$failures"
printf '%s\n' "$payload"
exit 0
fi
n=$(($(cat "$failures" 2>/dev/null || echo 0) + 1))
printf '%s' "$n" >"$failures"
if [ "$n" -ge "$threshold" ]; then
json Critical "update check failing (${n}x)" "!"
echo
elif [ -s "$last" ]; then
cat "$last"
echo
else
json Idle "" ""
echo
fi