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#!/bin/sh
# Waybar custom/pacdiff: shows count of unresolved .pacnew/.pacsave files.
# Source of truth is `pacdiff -o` (output mode — lists differing files,
# does nothing). Hidden when zero. Mako fires once when the count goes
# from "no problems" to "non-zero" (i.e. on the post-`pacman -Syu`
# settle), so you're nudged exactly once per upgrade wave.
#
# Click handler hands off to a root shell that sets DIFFPROG before
# invoking pacdiff (sudo-rs scrubs the env by default, so passing
# `DIFFPROG=… sudo pacdiff` or `sudo DIFFPROG=… pacdiff` doesn't
# survive — but `sudo sh -c 'DIFFPROG=… pacdiff'` does).
set -eu
STATE=${XDG_RUNTIME_DIR:-/tmp}/waybar-pacdiff-prev
emit_empty() {
printf '{"text":"","class":"fresh","tooltip":""}\n'
printf 0 >"$STATE" 2>/dev/null || :
exit 0
}
command -v pacdiff >/dev/null 2>&1 || emit_empty
count=$(pacdiff -o 2>/dev/null | grep -c . || :)
case "$count" in
'' | *[!0-9]*) count=0 ;;
esac
[ "$count" -eq 0 ] && emit_empty
text="pacdiff ${count}"
tooltip="${count} unresolved .pacnew/.pacsave file(s) — click to merge with \`nvim -d\`"
printf '{"text":"%s","class":"warn","tooltip":"%s"}\n' "$text" "$tooltip"
prev=0
if [ -f "$STATE" ]; then
prev=$(cat "$STATE" 2>/dev/null || printf 0)
case "$prev" in
'' | *[!0-9]*) prev=0 ;;
esac
fi
if [ "$prev" -eq 0 ] && [ "$count" -gt 0 ] &&
command -v notify-send >/dev/null 2>&1; then
notify-send \
--app-name=pacdiff \
--urgency=normal \
--icon=text-x-generic \
"Pacman config files need merging" \
"${count} .pacnew/.pacsave file(s). Click the bar entry to run pacdiff."
fi
printf '%s' "$count" >"$STATE"
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