#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 24 October 2024
# Updated : 26 May 2025
# Purpose : Wrapper script for starting JS8Call with PnP support
#
# Preconditions
# 1. Supported radio and audio interface are connected and properly detected
#
# Postconditions
# 1. Stop all running EmComm Tools modes
# 2. JS8Call audio settings updated
# 3. JS8Call started

ET_HOME=/opt/emcomm-tools
ACTIVE_RADIO="${ET_HOME}/conf/radios.d/active-radio.json"
CAT_DEVICE=/dev/et-cat

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

notify_user() {
  notify-send \
   -t 5000 \
   --app-name="EmComm Tools" \
   "$1"
}

start() {
  /opt/emcomm-tools/bin/et-kill-all && update-config && /usr/bin/js8call &

  if [ ! -e /dev/et-gps ]; then
    notify-send -u critical -i \
      /usr/share/icons/Yaru/48x48/status/dialog-information.png \
      "No GPS. Ensure your time is accurate when JS8 starts."
  fi

}

update-config () {

    JS8CALL_CONF_FILE="${HOME}/.config/JS8Call.ini"
   
    [ -z "$ET_USER_CONFIG" ] && ET_USER_CONFIG="${HOME}/.config/emcomm-tools/user.json"

    # Update configuration with current callsign and grid
    CALLSIGN=$(cat ${ET_USER_CONFIG} | jq -r .callsign)
    GRID=$(cat ${ET_USER_CONFIG} | jq -r .grid)

    if [ "${CALLSIGN}" = "N0CALL" ]; then
      notify_user "Can't start JS8Call. No callsign set. Run: et-user."
      exit 1
    fi

    sed -i "s|^MyCall.*|MyCall=${CALLSIGN}|" ${JS8CALL_CONF_FILE} 
    sed -i "s|^MyGrid.*|MyGrid=${GRID}|" ${JS8CALL_CONF_FILE} 

    ET_RELEASE=$(et-system-info release)
    sed -i "s|^MyInfo.*|MyInfo=${ET_RELEASE}|" ${JS8CALL_CONF_FILE} 


    # Set PTT to use Hamlib for both CAT control and PTT (default)
    sed -i "s|^PTTport.*|PTTport=localhost:4532|" ${JS8CALL_CONF_FILE}
    sed -i "s|PTT_method_[A-Z][A-Z][A-Z]|PTT_method_CAT|" ${JS8CALL_CONF_FILE}

    # Special case for select radios that only need to key the PTT, but do not
    # have CAT control support or VOX support. This edge case was added for 
    # radios like the Yaesu FTX-1 Field before Yaesu published their CAT commands.
    if [ -L "${ET_HOME}/conf/radios.d/active-radio.json" ]; then
      RIG_ID=$(cat "${ET_HOME}/conf/radios.d/active-radio.json" | jq -r .rigctrl.id)

      if [ "${RIG_ID}" = "1" ]; then
        PTT_ONLY=$(cat ${ET_HOME}/conf/radios.d/active-radio.json | jq -r .rigctrl.pttOnly)

        if [ "${PTT_ONLY}" = "true" ]; then
          et-log "Configued JS8Call for PTT-only mode"
          sed -i "s|PTT_method_[A-Z][A-Z][A-Z]|PTT_method_RTS|" ${JS8CALL_CONF_FILE}
          sed -i "s|^PTTport.*|PTTport=/dev/et-cat|" ${JS8CALL_CONF_FILE}
        fi
      fi
    fi

    et-log "Updated JS8Call configuration with user callsign '${CALLSIGN}' and grid: '${GRID}'"

    # 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}')

         # JS8Call has an issue decoding the received audio following a 
         # transmission when the device below is used. 
         #
         #JS8_AUDIO_DEVICE="plughw:CARD=ET_AUDIO,DEV=${AUDIO_DEVICE}"
         #
         # Instead, the following device solves this issue:
         JS8_AUDIO_DEVICE="sysdefault:CARD=ET_AUDIO"
  
         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

         ## Configure ALSA settings for sound card
         /opt/emcomm-tools/bin/et-audio update-config

       else
         et-log "No ET_AUDIO device detected."
         notify_user "Can't start JS8Call. No ET_AUDIO device detected."
         exit 1
       fi
    else
      et-log "No ET_AUDIO device plugged in."
      notify_user "Can't start JS8Call. No supported audio device plugged in."
      exit 1
    fi

}

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