#!/bin/bash
# Slab-scoped afplay wrapper. Records the inner afplay PID in
# /tmp/slab-afplay/<pid> for the lifetime of the playback so a fade /
# mute / Stop hook can silence ONLY the sounds slab spawned, not every
# afplay on the system (`pkill -x afplay` historically killed user music).
#
# Drop-in replacement for /usr/bin/afplay: same arg conventions, same
# blocking semantics. Background it with `&` if you don't want to wait.
set -u
SOUND="${1:-}"
[[ -z "$SOUND" ]] && exit 0

REG_DIR=/tmp/slab-afplay
mkdir -p "$REG_DIR" 2>/dev/null

/usr/bin/afplay "$SOUND" 2>/dev/null &
afpid=$!
marker="$REG_DIR/$afpid"
: > "$marker" 2>/dev/null

cleanup() { rm -f "$marker" 2>/dev/null; }
trap cleanup EXIT TERM INT

wait "$afpid" 2>/dev/null
exit 0