#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 12 May 2026
# Updated : 13 May 2026
# Purpose : Wrapper script for starting Reticulum with PnP support
#
# Preconditions:
# 1. Supported radio and audio interface are connected and properly detected
#
# Postconditions:
# 1. Reticulum configuration updated
# 2. Dire Wolf started
# 3. Reticulum started
. /opt/emcomm-tools/bin/et-common

APP="Reticulum"
RETICULUM_CONF_DIR="${HOME}/.reticulum"
RETICULUM_CONF_FILE="${RETICULUM_CONF_DIR}/config"

usage() {
  echo "usage: $(basename $0) <command> <type>"
  echo "  <command>"
  echo "    start              - Start ${APP} in selected mode"
  echo "    update-config      - Update configuration for selected mode"
  echo ""
  echo "  <type>"
  echo "    1200               - Run with AX.25 interface over VHF/UHF (1200 baud)"
  echo "    300                - Run with AX.25 interface over HF (300 baud)"
}

if [ $# -ne 2 ]; then
  usage
  exit 1
fi

MODE=$2
case "${MODE}" in
  1200)
    RETICULUM_TEMPLATE_CONF_FILE="${ET_HOME}/conf/template.d/reticulum/config.ax25.1200"
    RETICULUM_PACKET_INTERFACE_SERVICE=et-service-direwolf-simple
  ;;
  300)
    RETICULUM_TEMPLATE_CONF_FILE="${ET_HOME}/conf/template.d/reticulum/config.ax25.300"
    RETICULUM_PACKET_INTERFACE_SERVICE=et-service-direwolf-300
  ;;
  *)
    et-log "Can't start ${APP}. Mode '${MODE}' not supported"
    usage
    exit 1
  ;;
esac

if [[ ! -e "${RETICULUM_CONF_DIR}" ]]; then
 et-log "Creating missing configuration directory: ${RETICULUM_CONF_DIR}"
 mkdir -p "${RETICULUM_CONF_DIR}"
fi

if [[ ! -e "${RETICULUM_TEMPLATE_CONF_FILE}" ]]; then
  et-log "${RETICULUM_TEMPLATE_CONF_FILE} does not exist. Exiting."
  notify-user "Config file does not exist. Can't start Reticulum."
  exit 1
fi

start() {
  update_config
  
  if [[ $? -eq 0 ]]; then

    systemctl is-active --quiet ${RETICULUM_PACKET_INTERFACE_SERVICE}
    if [[ $? -ne 0 ]]; then
      start_and_wait_for_service ${RETICULUM_PACKET_INTERFACE_SERVICE}
    fi
   
    CMD="rnsd"
    et-log "Starting ${APP} with: '${CMD}'"
    echo
    ${CMD}
  else 
    et-log "Error updating configuration. Can't start ${APP}"
    exit 1
  fi
}


update_config () {

    et-log "Attempting to start ${APP} in mode: '${MODE}'"

    [[ -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 ${APP}. No callsign set. Run: et-user."
      exit 1
    fi

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

       # 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

         # 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 ${APP}. No ET_AUDIO device detected."
         exit 1
       fi
    else
      et-log "No ET_AUDIO device plugged in."
      notify-user "Can't start ${APP}. No supported audio device plugged in."
      exit 1
    fi

    et-log "Creating '${RETICULUM_CONF_FILE}' from template '${RETICULUM_TEMPLATE_CONF_FILE}'"
    cp ${RETICULUM_TEMPLATE_CONF_FILE} ${RETICULUM_CONF_FILE}

    # Update callsign
    sed -i "s|{{ET_CALLSIGN}}|${CALLSIGN}|g" ${RETICULUM_CONF_FILE} 
}

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