#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 8 November 2024
# Purpose : Wrapper script for starting Linbpq
#
# Preconditions:
# 1. Supported radio and audio interface are connected and properly detected
# 2. Dire Wolf is running
#
# Postconditions:
# 1. Audio settings updated
# 2. linbpq started
#

notify_user() {
  notify-send \
   -t 10000 \
   --app-name="EmComm Tools" \
   "$1"
}


[ -z ${ET_LOG_DIR} ] && ET_LOG_DIR="${HOME}/.local/share/emcomm-tools"
[ ! -e ${ET_LOG_DIR} ] && mkdir -p ${ET_LOG_DIR}

# TODO: Check that Dire Wolf is running
# TODO: Rename Linbpq to LINBPQ

# 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 [ $? -eq 0 ]; then
     AUDIO_CARD=$(echo $APLAY_OUT | cut -d":" -f1 | awk '{print $2}')
     AUDIO_DEVICE=$(echo $APLAY_OUT | cut -d"," -f2 | cut -d":" -f1 | awk '{print $2}')
     Linbpq_AUDIO_DEVICE="plughw:${AUDIO_CARD},${AUDIO_DEVICE}"

     # 3. Update audio device
     et-log "Using '${Linbpq_AUDIO_DEVICE}' as audio device for Linbpq."

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

   else
     et-log "Can't start linbpq. No ET_AUDIO device detected."
     notify_user "Select radio and plug it in"
     exit 1
   fi
else
  et-log "No ET_AUDIO device plugged in. No supported audio device plugged in."
  notify_user "Select radio and plug it in"
  exit 1
fi

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

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

cp /opt/emcomm-tools/conf/template.d/packet/bpq32.digipeater.cfg bpq32.cfg
sed -i "s|{{ET_CALLSIGN}}|${CALLSIGN}|g" bpq32.cfg
sed -i "s|{{ET_GRID}}|${GRID}|g" bpq32.cfg

CMD="linbpq"
et-log "Starting Linbpq with: '${CMD}'"
${CMD}