#!/bin/sh
# SIMMPLE DWM-STATUSBAR.

# THIS FUNCTIONS DRAWS THE BAR
function draw_bar () {
        case $1 in
                "0")
                        echo "[----------]"
                        ;;      
                "1")
                        echo "[#---------]"
                        ;;
                "2")
                        echo "[##--------]"
                        ;;
                "3")
                        echo "[###-------]"
                        ;;
                "4") 
                        echo "[####------]"
                        ;;
                "5")
                        echo "[#####-----]"
                        ;;
                "6")
                        echo "[######----]"
                        ;;
                "7")
                        echo "[#######---]"
                        ;;
                "8")
                        echo "[########--]"
                        ;;
                "9")
                        echo "[#########-]"
                        ;;
                *)
                        echo "[##########]"
                        ;;
        esac
}

function status () {

        upd="5"         # UPDATE INTERVAL
        sep=" ¤ "       # SEPARATOR
        fst=${sep: -1}  # FIRST SEPARATOR
        lst=${sep:0:1}  # LAST SEPARATOR
        
        # date
        date=`date '+%a %b %d %r'`
        
        # uptime
        uptime=`cat /proc/uptime |awk '{ print $1 }' |sed 's/\..*//'`
        uptime=`echo "((${uptime}/60)/60)"| bc -l |sed 's/\..*//'`
        uptime="upt: ${uptime}H"
        
        # mpd
        mpd="mpd: `mpc |head -n1`"
        check=`mpc |head -n1|awk '{ print $1 }'`
        if [ "${check}" = "volume:" ]; then 
                mpd='mpd: stopped' 
        fi

        # Memory
        mem_tot=`free -m |grep Mem: |awk '{ print $2 }'`
        mem_use=`free -m |grep 'buffers/cache' |awk '{ print $3 }'`
        mem_per=`echo "${mem_use}/${mem_tot}" | bc -l |sed 's/.//'`
        mem_bars=${mem_per:0:1}
        mem_str="mem: `draw_bar ${mem_bars}`"
        
        # Diskspace
        disk_str=""
        disks=`df -h |awk '{ print $6 }'|grep -vP 'boot|none|shm|Mounted'`

        for disk in ${disks}; do
                disk_per="`df -h |grep -P ${disk}\$ |awk '{ print $5 }'`"
                disk_str="${disk_str}${disk}: `draw_bar ${disk_per:0:1}`${sep}"
        done
        
        # CPU
        stat="0.0 "
        for dat in `ps axu | awk '{ print $3 }' |sed 's/%CPU//'`; do
                        stat="${stat}+ ${dat} "
        done
        stat=`echo ${stat} |bc -l`
        cpu_scaling="cpu: `draw_bar ${stat:0:1}`"

        # PRINT
        echo "${fst}${mem_str}${sep}${cpu_scaling}${sep}${disk_str}${mpd}${sep}${uptime}${sep}${date}${lst}"|tr "[:upper:]" "[:lower:]"
}

while true; do
        status
        sleep ${upd}
done