#!/bin/sh
### BEGIN INIT INFO
# Provides:          power-logger
# Required-Start:    $all
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:
# Short-Description: power-logger
### END INIT INFO

export SUFFIX=$(date +'%Y-%m-%d-%H:%M:%S')
export USER=pks
export GROUP=pks
export DIR=/home/$USER/mqtt_client/

case "$1" in
  start)
    echo "Starting power-logger"
    rm -f $DIR/stop
    if [ ! -f $DIR/power.db ]; then
      runuser -l $USER -c "$DIR/db-create.sh $DIR/power.db"
    fi
    mkdir -p $DIR/log
    chown -R $USER:$GROUP $DIR/log
    runuser -l $USER -c "source $DIR/env/bin/activate && python $DIR/mqtt-receiver.py 2> >(cat > $DIR/log/power.$SUFFIX.err) | tee >(cat > $DIR/log/power.$SUFFIX.out) | $DIR/db-from-log.sh $DIR/power.db 2> >(cat > $DIR/log/power.db-from-log.$SUFFIX.err)" &
    echo $! > /run/power-logger.pid2
    ;;
  stop)
    echo "Stopping power-logger"
    runuser -l $USER -c "touch $DIR/stop"
    sleep 3
    if [ -f /run/power-logger.pid2 ]; then
      kill $(cat /run/power-logger.pid2) &>/dev/null
      rm -f /run/power-logger.pid2
    fi
    rm -f $DIR/stop
    ;;
  *)
    echo "Usage: /etc/init.d/power-logger {start|stop}"
    exit 1
    ;;
esac

exit 0