#!/bin/bash

coin=QCN
pool=qcn.cryptity.com:7779
wallet=1234blahblah4321
minerpath="/home/ubuntu/minerd"
minerdcmd="minerd -a cryptonight -o $pool -u $wallet -p x -q"
maxboos=2
looptimer=15

while true; do
        running=`ps -C minerd | grep minerd | wc -l`
        maxnum=`cat /proc/cpuinfo | grep processor | wc -l`

        # check minerd is running
        if [ $running -lt 1 ]; then
                echo `date +%H:%M:%S` - $0 - No minerd found: starting miner on $coin @ $pool
                $minerpath/$minerdcmd  2>> $minerpath/minerd.log &
        # sanity check to make sure no more than one is running
        elif [ $running -gt 1 ]; then
                echo `date +%H:%M:%S` -  Too many minerd found: killing and restarting
                killall minerd && sleep 5
                $minerpath/$minerdcmd  2>> $minerpath/minerd.log &
        fi

        # check for boooo in the minerd output
        boos=`grep 'boooo' minerd.log | wc -l`
        #if there's fewer than allowed, just say so
        if [ $boos -lt $maxboos ]; then
                echo `date +%H:%M:%S` - Found $boos / $maxboos boos
                sleep $looptimer
        else
        #otherwise, there's too many, so shoot the miner
                rm minerd.log
                echo `date +%H:%M:%S` - FOUND TOO MANY BOOS - $boos / $maxboos
                #restart minerd
                killall minerd && sleep 5
                echo `date +%H:%M:%S` - Restarting miner on $coin @ $pool
                $minerpath/$minerdcmd  2>> $minerpath/minerd.log &
        fi
done;