#!/bin/bash

# create the emonhub utilities script
sudo sh -c 'cat > /usr/bin/emonhub' << EOF
#!/bin/bash

R=\$(touch ~/roorrw 2>/dev/null && { rm ~/roorrw; echo "RW"; } || echo "RO")

case \$1 in
    -c | --config)
        if [ \$R == "RO" ] ; then  sudo mount -o remount,rw /dev/mmcblk0p2  / ; fi
        sudo nano /etc/emonhub/emonhub.conf
        if [ \$R == "RO" ] ; then  sudo mount -o remount,ro /dev/mmcblk0p2  / ; fi
        ;;
    -r | --restart)
        sudo service emonhub restart;;
    -s | --start)
        sudo service emonhub start;;
    -u | --update)
        if [ \$R == "RO" ] ; then  sudo mount -o remount,rw /dev/mmcblk0p2  / ; fi
        echo "Checking for emonHub updates..."
        cd ~/emonhub
        git pull
        cd - >/dev/null
        if [ \$R == "RO" ] ; then  sudo mount -o remount,ro /dev/mmcblk0p2  / ; fi;;
    -v | --version)
        sudo python /usr/share/emonhub/emonhub.py --version;;
    -x | --exit)
        sudo service emonhub stop;;
    -dl | --display-log)
        echo "Use 'ctrl-C' to quit displaying log messages."
        echo
        tail -f /var/log/emonhub/emonhub.log;;
    -ol | --open-logfile)
        sudo nano /var/log/emonhub/emonhub.log;;
    -rl | --reset-logfile)
        sudo sh -c 'echo "" > /var/log/emonhub/emonhub.log';;
    -vl | --view-logfile)
        cat /var/log/emonhub/emonhub.log;;
    *)
        echo
        echo "The 'emonhub' command can be used with these valid options"
        echo
        echo "emonHub utilities"
        echo "   -c  or --config        Opens the configuration file (emonhub.conf) for editing"
        echo "   -h  or --help          Displays this help for emonHub utilities command options"
        echo "   -r  or --restart       Restarts the emonhub service"
        echo "   -s  or --start         Starts the emonhub service"
        echo "   -u  or --update        Updates emonhub from the git repository (git pull)"
        echo "   -v  or --version       Displays the emonHub version installed"
        echo "   -x  or --exit          Exits emonHub by stopping the emonhub service"
        echo
        echo "emonHub logging"
        echo "   -dl or --display-log   Display last 10 log messages and continue to monitor logging"
        echo "   -ol or --open-logfile  Open logfile in text editor"
        echo "   -rl or --reset-logfile Reset the current logfile (deletes existing log messages!)"
        echo "   -vl or --view-logfile  View the entire logfile"
        echo;;
esac

EOF

# make the utilities script executable
sudo chmod +x /usr/bin/emonhub

# self-destruct
rm -- "$0"