#!/bin/sh
#Usage: serverctl action [servername] [minicom args]


DEVDIR=/sys/bus/usb/devices/
DELAY=2500
list_servers() {
    ls $DEVDIR | while read line; do
	if [ "`ls ${DEVDIR}/${line}/|grep tty|wc -l`" != "0" ]; then
	    tty="`ls ${DEVDIR}/${line}/|grep tty`"
	    base="`echo $line|cut -f1 -d:`"
	    m="`cat ${DEVDIR}/${base}/manufacturer`"
	    p="`cat ${DEVDIR}/${base}/product`"
	    s="`cat ${DEVDIR}/${base}/serial`"
	    echo "$line;$base;$tty;$m;$p;$s"
	fi
    done
}

action=$1
node=$2

check_node() { 
    if [ "`list_servers|grep $node|wc -l`" -eq "0" ]; then
	echo "No such node: $node" 
	exit 1
    fi
}

case $action in
    "list")
	list_servers|while read line; do
	echo $line|awk -F";" '{print "/dev/"$3": "$4"  "$5"  "$6 }'
	done
	;;
    "reboot")
	check_node
	cp2103gpio --serial=$node --gpio=3 --out=0 --sleep $DELAY --out=1
	;;
    "off")
	check_node
	cp2103gpio --serial=$node --gpio=3 --out=0
	;;
    "on")
	check_node
	cp2103gpio --serial=$node --gpio=3 --out=0
	;;
    "term")
	check_node
	shift
	shift
	miniargs=$*
	[ -z "$*" ] && miniargs="-b 115200"
	tty=/dev/`list_servers|grep $node|cut -d";" -f3`
	minicom -o -D $tty $miniargs
	;;
    *)
	echo "Server control utility"
	echo "Usage: $0 action node"
	echo "Valid actions are: "
	echo "                   list"
	echo "                   reboot"
	echo "                   on"
	echo "                   off"
	echo "                   term"
	;;
esac