#!/bin/bash

APLAY="aplay -Dhw:0,0 -c 2 -r 48000 -d 15 "
AREC="arecord -Dhw:0,6 -f s32_LE -c 4 -r 48000 -d 10 -vvv"
PLAY_FILE="$1"
REC_FILE="rec.wav"
do_play() {
  local id=$1
  echo "** $i Starting playback $PLAY_FILE"
  $APLAY $PLAY_FILE  

  if [ $? -ne 0 ]; then
    # If aplay fails, send a SIGUSR1 signal to the parent process
    echo -e "\n**$i $PLAY_FILE playback error"
    kill -SIGUSR1 $$
  fi

  echo -e "\n**$i $PLAY_FILE playback completed $aplay_pid"
}

cleanup() {
  jobs -p
  # Kill all background jobs
  for job in $(jobs -p); do
    kill -0 $job 2>/dev/null
  done
  jobs -p
}

handle_sigint() {
  echo "Caught SIGINT signal. Cleaning up..."
  cleanup
  exit 0
}

handle_sigterm() {
  echo "Caught SIGTERM signal. Exiting gracefully..."
  cleanup
  exit 0
}
handle_siguser1() {
  echo "playback error Exiting"
  cleanup
  exit 0
}

trap 'handle_sigint' SIGINT
trap 'handle_sigterm' SIGTERM
trap 'handle_siguser1' SIGUSR1
# Main script logic
for i in {0..30}; do
  echo "***$i Audio play and record parallel***"
  do_play $i & 
  sleep 2
  echo -e "\n**$i Starting recording "
  $AREC "test.wav"
  if [ $? -ne 0 ]; then
    echo -e "\n**$i recording error "
    cleanup
    exit 0
  fi
  echo -e "\n** $i recording completed"
  cp  "rec_full.wav" $REC_FILE
  if [ $i -eq 0 ]; then 
    cp "test.wav" "rec_full.wav"   
  else
    sox $REC_FILE "test.wav" "rec_full.wav"
  fi
  sleep 5
done