start.sh

#!/bin/bash -e

source .env

log () {
  echo "Step $1/5: ${2}This might take several minutes." > /tmp/wazigate-setup-step.txt
}

# Delete all connections associated with "WAZIGATE-AP"
delete_connections () {
  #nmcli c down WAZIGATE-AP
  nmcli connection delete uuid $(nmcli -f NAME,UUID -p c | grep WAZIGATE-AP | sed 's/WAZIGATE-AP//' | xargs)
  rm -rf /etc/NetworkManager/system-connections/*
}

# Setup a new "WAZIGATE-AP" connection
setup_new_connection () {
  nmcli dev wifi hotspot ifname wlan0 con-name WAZIGATE-AP ssid $SSID password "loragateway"
  nmcli connection modify WAZIGATE-AP \
    connection.autoconnect true connection.autoconnect-priority -100 \
    802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared ipv6.method auto \
    wifi-sec.key-mgmt wpa-psk wifi-sec.proto wpa
  # using down/up instead of reapply because '802-11-wireless.band' can not be changed on the fly
  nmcli c down WAZIGATE-AP
  nmcli c up WAZIGATE-AP
}


################################################################################

log 0 "Prepare: "

if [ -f  /sys/class/net/eth0/address ] ; then
  WAZIGATE_ID=$(cat /sys/class/net/eth0/address)
elif [ -f  /sys/class/net/wlan0/address ] ; then
  WAZIGATE_ID=$(cat /sys/class/net/wlan0/address)
fi;
export WAZIGATE_ID=${WAZIGATE_ID//:}
SSID="WAZIGATE_${WAZIGATE_ID^^}"

################################################################################

log 1 "Enabling interfaces: "

# Enable SPI
echo "Enabling SPI ..."
raspi-config nonint do_spi 0
# Enable I2C
echo "Enabling I2C ..."
raspi-config nonint do_i2c 0

################################################################################

log 2 "Configuring Access Point: "

echo "Current MAC: $WAZIGATE_ID"
if [ -f /etc/NetworkManager/system-connections/WAZIGATE-AP.nmconnection ]; then
  declare -a IFS=$'' waziAPs=($(nmcli c show WAZIGATE-AP | grep "802-11-wireless.ssid" | sed 's/802-11-wireless.ssid://' | xargs ))

  for OUTPUT in ${waziAPs[@]}
  do
    #echo "${OUTPUT#*_}"
    if [ ${SSID#*_} != ${OUTPUT#*_} ]; then
      echo "Found other MAC in NetworkManager: ${OUTPUT#*_}"
      delete_connections #"$waziAPs"
    fi
  done
  # After deleting old "WAZIGATE-AP" connections, create a new one
  if [ ! -f /etc/NetworkManager/system-connections/WAZIGATE-AP.nmconnection ]; then
    echo "Setup a new connection"
    setup_new_connection
  fi
else
  # Create a new "WAZIGATE-AP" connection, if there are no connections 
  echo "Setup a new connection"
  setup_new_connection
fi

################################################################################

log 3 "Loading docker images: "
# Read from docker compose: load images
if [ -f wazigate_images.tar ]; then
  docker load -i wazigate_images.tar
  rm -f wazigate_images.tar
fi

################################################################################

log 4 "Updating redis.sock file permissions"
sudo chmod 777 /var/run/redis/redis.sock

################################################################################

log 5 "Updating wait-for-wazigate-edge.sh file permissions"
sudo chmod u+x /var/lib/wazigate/apps/waziup.wazigate-lora/mosquitto/config/wait-for-wazigate-edge.sh

################################################################################
log 6 "Starting docker containers: "
# Start containers
docker-compose up -d