#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 2 October 2025
# Updated : 15 March 2026
# Purpose : Wrapper script for starting fldigi with PnP support
#
# Preconditions
# 1. Supported radio and audio interface are connected and properly detected
#
# Postconditions
# 1. Stop all running EmComm Tools modes
# 2. fldigi core settings updated (e.g., CAT, audio, user config and ETC defaults)
# 3. fldigi started

usage() {
  echo "usage: $(basename $0) <command>"
  echo "  start           - Update config and start fldigi"
  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/local/bin/fldigi &
}

update-config () {

    # 1. Check if the audio device 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 
       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 fldigi. No ET_AUDIO device detected."
         exit 1
       fi
    else
      et-log "No ET_AUDIO device plugged in."
      notify_user "Can't start fldigi. No supported audio device plugged in."
      exit 1
    fi

    PORT_AUDIO_CONF=/tmp/conf.tmp
    GEO_CONF=/tmp/geo.tmp
    FLDIGI_CONF_DIR="${HOME}/.fldigi"
    FLDIGI_CONF_FILE="${FLDIGI_CONF_DIR}/fldigi_def.xml"

    if [[ ! -e ${FLDIGI_CONF_DIR} ]]; then
      et-log "${FLDIGI_CONF_DIR} does not exist. Creating it from template."
      cp -r -v /etc/skel/.fldigi ${HOME}
    fi

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

    # clean up temporary config that may exist
    [[ -e ${PORT_AUDIO_CONF} ]] && rm ${PORT_AUDIO_CONF}

    et-portaudio 2>/dev/null > ${PORT_AUDIO_CONF}

    if [[ $? -ne 0 ]]; then
      et-log "No supported ET_AUDIO device found"
      exit 1
    fi

    DEVICE=$(jq -r -e '.device' ${PORT_AUDIO_CONF})
    if [[ $? -ne 0 ]]; then
      et-log "Error getting PulseAudio device name for ET_AUDIO device"
      exit 1
    fi

    INDEX=$(jq -r -e '.index' ${PORT_AUDIO_CONF})
    if [[ $? -ne 0 ]]; then
      et-log "Error getting PulseAudio device index for ET_AUDIO device"
      exit 1
    fi

    ##############################################
    # Map ALSA ET_AUDIO device to PortAudio device
    ##############################################
    et-log "Updating PortAudio device configuration..."

    sed -i "s|^<AUDIOIO>.*|<AUDIOIO>1</AUDIOIO>|" ${FLDIGI_CONF_FILE}

    sed -i "s|^<PORTINDEVICE>.*|<PORTINDEVICE>${DEVICE}</PORTINDEVICE>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<PORTININDEX>.*|<PORTININDEX>${INDEX}</PORTININDEX>|" ${FLDIGI_CONF_FILE}

    sed -i "s|^<PORTOUTDEVICE>.*|<PORTOUTDEVICE>${DEVICE}</PORTOUTDEVICE>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<PORTOUTINDEX>.*|<PORTOUTINDEX>${INDEX}</PORTOUTINDEX>|" ${FLDIGI_CONF_FILE}

    et-log "Using device '${DEVICE}' and device index '${INDEX}' for PortAudio configuration"


    #################
    # Update callsign
    #################
    et-log "Updating callsign configuration..."
    CALLSIGN=$(jq -r -e '.callsign' ${ET_USER_CONFIG})

    if [[ "${CALLSIGN}" = "N0CALL" ]]; then
       et-log "Exiting early. No callsign set. Run: et-user."
       exit 1
    fi

    et-log "Using callsign '${CALLSIGN}'"
    sed -i "s|^<MYCALL>.*|<MYCALL>${CALLSIGN}</MYCALL>|" ${FLDIGI_CONF_FILE}


    ###############################################
    # Update grid based on ETC geolocation services
    ###############################################
    et-log "Updating your grid square..."

    GRID=$(et-system-info grid)
    et-log "Using grid square '${GRID}' for your location"
    sed -i "s|^<MYLOC>.*|<MYLOC>${GRID}</MYLOC>|" ${FLDIGI_CONF_FILE}

    #####################################################################
    # Configure CAT interface using Hamlib's rig control daemon (rigctld)
    #####################################################################
    et-log "Updating CAT control configuration..."

    sed -i "s|^<CHKUSEHAMLIBIS>.*|<CHKUSEHAMLIBIS>1</CHKUSEHAMLIBIS>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<HAMRIGMODEL>.*|<HAMRIGMODEL>2</HAMRIGMODEL>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<HAMLIBCMDPTT>.*|<HAMLIBCMDPTT>1</HAMLIBCMDPTT>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<HAMRIGDEVICE>.*|<HAMRIGDEVICE>localhost:4532</HAMRIGDEVICE>|" ${FLDIGI_CONF_FILE}


    ######################################
    # Enable Reed Soloman ID for RX and TX
    ######################################
    et-log "Enabling Reed Soloman ID for RX/TX..."

    sed -i "s|^<RECEIVERSID>.*|<RECEIVERSID>1</RECEIVERSID>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<TRANSMITRSID>.*|<TRANSMITRSID>1</TRANSMITRSID>|" ${FLDIGI_CONF_FILE}


    ###########################
    # Modem configuration: MT63
    ###########################
    et-log "Updating MT63 modem configuration..."

    sed -i "s|^<MT63INTEGRATION>.*|<MT63INTEGRATION>1</MT63INTEGRATION>|" ${FLDIGI_CONF_FILE}


    ########################
    # Repeater configuration
    ########################
    et-log "Updating settings for linked repeater systems..."

    # Key up for 2 seconds before transmitting tone. Needed for linked repeater systems.
    sed -i "s|^<PRETONE>.*|<PRETONE>2</PRETONE>|" ${FLDIGI_CONF_FILE}


    #####################
    # NBEMS configuration
    #####################
    et-log "Updating settings for NBEMS..."

    sed -i "s|^<OPEN_NBEMS_FOLDER>.*|<OPEN_NBEMS_FOLDER>1</OPEN_NBEMS_FOLDER>|" ${FLDIGI_CONF_FILE}
    sed -i "s|^<FLMSG_PATHNAME>.*|<FLMSG_PATHNAME>/usr/local/bin/flmsg</FLMSG_PATHNAME>|" ${FLDIGI_CONF_FILE}
}

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