# vim: ft=sh

function nginx () {

    nc -zw2 127.0.0.1 80 || echo "injoignable sur port 80 local"

    nc -zw2 paris12.pcf.fr 80 || echo "injoignable sur port 80 distant"

    nc -zw2 paris12.pcf.fr 443 || echo "injoignable sur port 443 distant"

}

function core_temp () {

    local min=60

    local level=("warning" "severe" "danger!")

    local step=$(( $(</sys/class/thermal/thermal_zone0/temp) - (min * 1000) ))

    if test $step -gt 1; then

#    if test $step -gt 5000; then # en été il fait plus chaud, c'est normal que ça monte à 60° régulièrement

        step=$((step / 10000))

        test $step -le 2 || step=2

        echo "${level[step]}: température > $((min + step * 10))°"

    fi

}

function core_alim () {

    eval $(/opt/vc/bin/vcgencmd measure_volts core)

    volt_fmt=${volt/\.}

    volt_fmt=${volt_fmt/V}

    test $volt_fmt -lt 12000 -o $volt_fmt -gt 15000 && echo "$volt"

}

function undervoltage () {

    test $(grep -c "hwmon hwmon1" /var/log/syslog) -gt 0 && echo "Undervoltage detected!"

}

function clean_swap () {

    _turn 2 || return

    echo 1 > /proc/sys/vm/drop_caches

    if LANG=C free -m | awk '

        /^Swap:/ {

            used = $3

        }

        END {

            bash_exit_code = !(used > 31)

            exit bash_exit_code

        }

    '; then

        systemctl stop dphys-swapfile \

        && systemctl stop zram        \

        && systemctl start zram       \

        && systemctl start dphys-swapfile \

        || echo 'erreur'

    fi

}

function mem_pressure () {

    local meminfo=($(</proc/meminfo))

    local level=(danger severe warning)

    local margin=30000

    for ((i=0; i<${#meminfo[@]}; i+=3)); do

        test ${meminfo[i]} == 'MemAvailable:' && break

    done

    meminfo[i+2]=$(( ( ${meminfo[i+1]} - $margin ) / 100000 ))

    test ${meminfo[i+2]} -ge ${#range[@]} || echo "${level[${meminfo[i+2]}]}: available ${meminfo[i+1]}kB"

}

function printer () {

    _turn 24 || return

    local min=20

    local level=(extreme danger warning info)

    local printer=192.168.1.54

    local prtMarkerSuppliesMaxCapacity=1.3.6.1.2.1.43.11.1.1.8.1

    local prtMarkerSuppliesLevel=1.3.6.1.2.1.43.11.1.1.9.1

    local left=$(snmpget -v 1 -c public $printer ${prtMarkerSuppliesLevel}.4)

    local full=$(snmpget -v 1 -c public $printer ${prtMarkerSuppliesMaxCapacity}.4)

    if test ${full#*:} -ne 0; then

        local step=$(((${left#*:}*100/${full#*:})/5))

        if test $step -le ${#level[@]}; then

            echo "${level[$step]} toner black"

        fi

    fi

}