#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 24 October 2024
# Purpose : Wrapper script for starting JS8Call with PnP support
#
# Preconditions
# 1. Support radio and audio interface are connected and properly detected
#
# Postconditions
# 1. JS8Call is started with audio settings updated

usage() {
  echo "usage: $(basename $0) <command>"
  echo "  start           - Update config and start JS8Call"
  echo "  update-config   - Update config"
}

if [ $# -ne 1 ]; then
  usage
  exit 1
fi

start() {
  echo "Not yet implemented"
}

update-config () {

    JS8CALL_CONF_FILE="${HOME}/.config/JS8Call.ini"

    # 1. Check if the symlink was created by the udev rules
    if [ -e /dev/et-audio ]; then

       # 2. Check that this device was properly tagged with the ET_AUDIO env variable with a udev rule
       APLAY_OUT=$(arecord -l | grep ET_AUDIO)
       if [ $? -eq 0 ]; then
         AUDIO_DEVICE=$(echo $APLAY_OUT | cut -d"," -f2 | cut -d":" -f1 | awk '{print $2}')
         JS8_AUDIO_DEVICE="plughw:CARD=ET_AUDIO,DEV=${AUDIO_DEVICE}"
         et-log "Using '${JS8_AUDIO_DEVICE}' for JS8Call configuration."

         # 3. Check for existing JS8Call sound configuration

         ## Update input
         grep "^SoundInName" ${JS8CALL_CONF_FILE}
         if [ $? -eq 0 ]; then
           sed -i "s|^SoundInName.*|SoundInName=\"${JS8_AUDIO_DEVICE}\"|" ${JS8CALL_CONF_FILE} 
         else
           echo "SoundInName=\"${JS8_AUDIO_DEVICE}\"" >> ${JS8CALL_CONF_FILE}
         fi

         ## Update output
         grep "^SoundOutName" ${JS8CALL_CONF_FILE}
         if [ $? -eq 0 ]; then
           sed -i "s|^SoundOutName.*|SoundOutName=\"${JS8_AUDIO_DEVICE}\"|" ${JS8CALL_CONF_FILE} 
         else
           echo "SoundOutName=\"${JS8_AUDIO_DEVICE}\"" >> ${JS8CALL_CONF_FILE}
         fi

       else
         et-log "No ET_AUDIO device detected."
         exit 1
       fi
    else
      et-log "No ET_AUDIO device plugged in."
      exit 1
    fi
}

case $1 in
  start)
    start
    ;;
  update-config)
    update-config
    ;;
  *)
    echo "Invalid command."
    usage
    exit 1
  ;;
esac