#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 3 November 2024
# Updated : 13 October 2025
# Purpose : Wrapper script for starting YAAC with PnP support
#
# Preconditions:
# 1. Supported radio and audio interface are connected and properly detected
# 2. Dire Wolf is started or Bluetooth TNC is connected
#
# Postconditions:
# 1. Callsign is updated in YAAC
# 2. YAAC is started

YAAC_CONF_DIR=${HOME}/.java/.userPrefs/org/ka2ddo/yaac
YAAC_CONF_FILE_PORTS=${YAAC_CONF_DIR}/Ports/prefs.xml
YAAC_CONF_FILE_PORTS_TEMPLATE=/etc/skel/.java/.userPrefs/org/ka2ddo/yaac/Ports/prefs.xml

usage() {
  echo "usage: $(basename $0) <command>"
  echo "  <command>"
  echo "    start           - Start YAAC"
  echo "    update-config   - Update configuration for selected mode"
}

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

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

start() {
  update-config
  
  if [[ $? -eq 0 ]]; then
    CMD="java -Xms2g -Xmx6g -XX:+UseG1GC -jar /opt/yaac/YAAC.jar"

    PS_OUT=$(ps -ef | grep "[r]fcomm0")
    if [[ $? -eq 0 ]]; then
      et-log "Starting YAAC in Bluetooth mode with: ${CMD}"
      ${CMD}
    fi

    PS_OUT=$(ps -ef | grep [d]irewolf)
    if [[ $? -eq 0 ]]; then
      et-log "Starting YAAC in Dire Wolf mode with: ${CMD}"
      ${CMD}
    else
      et-log "Can't start YAAC. Dire Wolf or Bluetooth TNC services not running."
      exit 1
    fi

  else 
    et-log "Error updating configuration. Can't start YAAC"
    exit 1
  fi
}

update-config () {

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

    CALLSIGN=$(cat ${ET_USER_CONFIG} | jq -r .callsign)

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

    et-log "Updating YAAC ports file: ${YAAC_CONF_FILE_PORTS}..."
    cp -v ${YAAC_CONF_FILE_PORTS_TEMPLATE} ${YAAC_CONF_FILE_PORTS}
    sed -i "s|{{ET_CALLSIGN}}|${CALLSIGN}|g" ${YAAC_CONF_FILE_PORTS}

    # Add GPS port only if it is available
    systemctl status gpsd --no-pager > /dev/null
    if [[ $? -ne 0 ]]; then
      et-log "GPS not connected. Removing GPS port from configuration."
      sed -i '/GPSD/d' ${YAAC_CONF_FILE_PORTS}
    fi

    PS_OUT=$(ps -ef | grep "[r]fcomm0")
    if [[ $? -ne 0 ]]; then
      et-log "Bluetooth TNC not connected. Removing rfcomm port from configuration."
      sed -i '/Serial_TNC/d' ${YAAC_CONF_FILE_PORTS}
    fi

    PS_OUT=$(ps -ef | grep "[d]irewolf")
    if [[ $? -ne 0 ]]; then
      et-log "Dire Wolf not running. Removing KISS over TCP port from configuration."
      sed -i '/KISS-over-TCP/d' ${YAAC_CONF_FILE_PORTS}
    fi
    
    echo "Generated the configuration below..."
    echo
    cat ${YAAC_CONF_FILE_PORTS}
    echo
}

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