#!/bin/bash

# script to auto decode packets using Direwolf and FM TXC and run Pacsat Ground Station

sudo pkill -f "/home/pi/CubeSatSim/groundstation/direwolf-pacsat-tmp.conf"

loopback=0
vox=0
safe=0
card=0
pwm=0

if [ "$1" = "l" ] ; then

  loopback=1

elif [ "$1" = "v" ] ; then

  vox=1  

elif [ "$1" = "c" ] ; then

  card=1  

else

  pwm=1  
  
fi  

if [[ $(arecord -l | grep "USB Audio Device") ]] ; then
  echo "USB Sound Card detected"
  soundcard=1
else
  echo "No USB Sound Card detected"
  soundcard=0
fi  

gpio -g mode 7 up
if [[ $(gpio -g read 7 | grep 0) ]] ; then
  echo "TXC is present"
  txc=1
else
  echo "TXC not present"
  txc=0
fi  

timeout 1 rtl_test &> out.txt
if [[ $(grep "No supported" out.txt) ]] ; then
  echo "No RTL-SDR detected"
  rtl=0
else
  echo "RTL-SDR detected."
  rtl=1
fi

FILE=/home/pi/CubeSatSim/battery_saver
if [ -f "$FILE" ]; then

  safe=1
  
fi  

value=`cat /home/pi/CubeSatSim/sim.cfg`
echo "$value" > /dev/null
set -- $value

callsign="$1"
frequency="$7e3"

echo -n "Callsign is "
echo $callsign
echo -n "Transmit Frequency is "
echo $frequency
echo

if [ ! -d "/home/pi/PacSatGround" ] ; then

  sudo rm -r /home/pi/PacSatGround
  cd
  sudo rm PacSatGround.zip
  wget https://github.com/alanbjohnston/CubeSatSim/raw/refs/heads/master-b-p-s/spacecraft/PacSatGround_0.46o/PacSatGround.zip
  unzip PacSatGround.zip -d PacSatGround
  sudo rm PacSatGround.zip
        
  echo
  echo "The first time you run the Ground Station, you will need to put in your callsign"
  
  sleep 10

fi

if [ ! -d "/home/pi/PacSatGroundLoop" ] ; then

  sudo rm PacSatGround.zip
  wget https://github.com/alanbjohnston/CubeSatSim/raw/refs/heads/master-b-p-s/spacecraft/PacSatGround_0.46o/PacSatGround.zip
  unzip PacSatGround.zip -d PacSatGroundLoop
  sudo rm PacSatGround.zip
  
  echo
  echo "The first time you run the Ground Station, you will need to put in your callsign"
  
  sleep 10

fi

sudo sed -i "s/TNC_TX_DELAY=.*$/TNC_TX_DELAY=750/g" /home/pi/PacSatGround/PacSatGround.properties
sudo sed -i "s/TNC_TX_DELAY=.*$/TNC_TX_DELAY=750/g" /home/pi/PacSatGroundLoop/PacSatGround.properties

sudo modprobe snd-aloop

#sudo systemctl stop cubesatsim >/dev/null 2>&1

#sudo systemctl stop transmit >/dev/null 2>&1

sudo systemctl stop command >/dev/null 2>&1

#/home/pi/CubeSatSim/config -I

sudo systemctl stop command >/dev/null 2>&1

sudo systemctl stop openwebrx >/dev/null 2>&1

sudo systemctl stop rtl_tcp >/dev/null 2>&1

pkill -o chromium &>/dev/null

sudo killall -9 rtl_fm &>/dev/null

#sudo killall -9 direwolf &>/dev/null

sudo killall -9 sdrpp &>/dev/null

#sudo killall -9 aplay &>/dev/null

sudo killall -9 qsstv &>/dev/null

sudo killall -9 rtl_tcp &>/dev/null

sudo killall -9 java &>/dev/null

sudo killall -9 CubicSDR &>/dev/null

sudo killall -9 zenity &>/dev/null

#sudo systemctl restart pacsatsim

#sudo /etc/init.d/alsa-utils stop
#sudo /etc/init.d/alsa-utils start

sudo usermod -a -G gpio pi

if [ "$loopback" = "1" ] ; then

  echo "Using Audio Loopback"
  ADEVICE="ADEVICE plughw:CARD=Loopback,DEV=1" 
  PTT="PTT GPIOD gpiochip0 17" 

elif [ "$safe" = "1" ] ; then

  ADEVICE="ADEVICE shared_mic plughw:CARD=Loopback,DEV=0"
  PTT="PTT GPIOD gpiochip0 17"

  if [ ! "$txc" = "1" ] ; then
    echo "Safe mode - battery saver won't work since no TXC present"
    sleep 5
  elif [ ! "$soundcard" = "1" ] ; then
     echo "Safe mode - battery saver won't work since no sound card present"
     sleep 5
  else
    echo "Safe mode - battery saver"
  fi  

elif [ "$vox" = "1" ] ; then

  ADEVICE="ADEVICE plughw:CARD=Device,DEV=0" 
  PTT="PTT GPIOD gpiochip0 17" 
  
  if [ "$soundcard" = "1" ] ; then
     echo "Using Soundcard Audio TX and RX (VOX, no PTT)"
  else
    echo "Soundcard Audio TX and RX (VOX, no PTT) will not work since no sound card present"
    sleep 5
  fi  
  
elif [ "$pwm" = "1" ] ; then  
  
  ADEVICE="ADEVICE shared_mic plughw:CARD=Headphones,DEV=0" 
  PTT="PTT GPIOD gpiochip0 -20" 

  if [ ! "$txc" = "1" ] ; then
    echo "FM TXC using Soundcard input (JP13), PWM output won't work since no TXC present"
    sleep 5
  elif [ ! "$soundcard" = "1" ] ; then
     echo "FM TXC using Soundcard input (JP13), PWM output won't work since no sound card present"
     sleep 5
  else
    echo "FM TXC using Soundcard input (JP13), PWM output"
  fi
   
else
  
  echo "FM TXC using Soundcard input (JP13) and output (JP14)"
  ADEVICE="ADEVICE shared_mic plughw:CARD=Device,DEV=0" 
  PTT="PTT GPIOD gpiochip0 -20"

  if [ ! "$txc" = "1" ] ; then
    echo "FM TXC using Soundcard input (JP13) and output (JP14) won't work since no TXC present"
    sleep 5
  elif [ ! "$soundcard" = "1" ] ; then
     echo "FM TXC using Soundcard input (JP13), output (JP14) won't work since no sound card present"
     sleep 5
  else
    echo "FM TXC using Soundcard input (JP13), output JP14"
  fi
    
fi

DIREWOLF_CONF="/home/pi/CubeSatSim/groundstation/direwolf-pacsat-tmp.conf"

echo "$ADEVICE" > $DIREWOLF_CONF
echo "MYCALL $callsign-1" >> $DIREWOLF_CONF
echo "$PTT" >> $DIREWOLF_CONF
cat /home/pi/CubeSatSim/groundstation/direwolf/direwolf-pacsat.conf >> $DIREWOLF_CONF

echo
echo "$DIREWOLF_CONF"
echo
cat $DIREWOLF_CONF
echo

direwolf -r 48000 -c $DIREWOLF_CONF -t 0 &

cd /home/pi/Desktop/PacsatGround/

if [ "$loopback" = "1" ] ; then

  setsid java -Xmx512M -jar  PacSatGround.jar "/home/pi/PacSatGroundLoop" # removed &

else

  setsid java -Xmx512M -jar  PacSatGround.jar "/home/pi/PacSatGround" # removed &

fi

sleep 10

#echo "Stopping Pacsatsim"

#$SHELL