#!/usr/bin/env bash
set -e

FILE="$1"
[[ -f "$FILE" ]] || { echo "Usage: $0 <file>"; exit 1; }

STATE="$HOME/.soundboard"
mkdir -p "$STATE"

DEFAULT_SINK=$(pactl get-default-sink)

# Start paplay processes in foreground
# Store PIDs so we can clean up
paplay --device=soundboard_sink "$FILE" &
PID_MIC=$!

paplay --device="$DEFAULT_SINK" "$FILE" &
PID_OUT=$!

# Trap signals to stop both outputs if script is killed
trap "kill $PID_MIC $PID_OUT 2>/dev/null" EXIT INT TERM

# Register this process in PID file for stop_all.sh
echo $$ >> "$STATE/playing.pids"

# Wait for both streams to finish
wait $PID_MIC $PID_OUT

# Remove from PID file when done
sed -i "\|^$$\$|d" "$STATE/playing.pids"