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#!/bin/sh
# resume-lock-grace: lock the screen if the user stays idle for $1
# (default 30) seconds after waking from suspend. Designed to be invoked
# from swayidle's `after-resume` so a quick wake-and-keep-using doesn't
# require typing the password, while a wake-and-walk-away still locks.
#
# Implementation: spawn a one-shot swayidle that locks once and exits.
# A watchdog kills it as soon as swaylock is detected, and a hard cap
# guarantees we never linger competing with the main swayidle.
set -eu
GRACE="${1:-30}"
LOCK_CMD='swaylock -f -e -c 282828'
HARD_CAP=$((GRACE * 4))
# If a lock is already up (e.g. main swayidle already fired), do nothing.
pgrep -x swaylock >/dev/null && exit 0
swayidle -w timeout "$GRACE" "$LOCK_CMD" >/dev/null 2>&1 &
PID=$!
elapsed=0
while [ "$elapsed" -lt "$HARD_CAP" ]; do
if pgrep -x swaylock >/dev/null; then
break
fi
if ! kill -0 "$PID" 2>/dev/null; then
exit 0
fi
sleep 1
elapsed=$((elapsed + 1))
done
kill "$PID" 2>/dev/null || true
wait 2>/dev/null || true
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