#!/usr/bin/env bash

wm=monsterwm
ff="/tmp/$RANDOM.monsterwm.fifo"

tags=('\ue010 null' '\ue011 web' '\ue012 foo' '\ue062')
layouts=('\ue002' '\ue001' '\ue003' '\ue005' '\ue006') 

[[ -p $ff ]] || mkfifo -m 600 "$ff"

function statusbar {
    # Date
    date=$(date +"%H:%M")
    # Memory usage
    mem=$(free -m | awk '/buffers\/cache/ {print $3 MB}')
    # Volume
    vol=$(amixer get Master | egrep -o '[0-9]{1,3}%' | sed -e 's/%//')
    # Music status
    music="$(mpc current -f "%artist% - %title%")"
    if [ -z "$music" ]; then music="stopped" mstat="\ue0ae"
    else
    mstat="$(mpc | sed -rn '2s/\[([[:alpha:]]+)].*/\1/p')"
    [ "$mstat" == "paused" ] && mstat="\ue059" || mstat="\ue0aa"
    fi
    # HDD
    root=$(df -h|awk '/root/ {print $5}')
    home=$(df -h|awk '/home/ {print $5}')

    echo "\r \f4$mstat\fr $music \f4\\ue09f\fr $root \f4\\ue0b2\fr $home \f4\ue020\fr $mem \f4\\ue05d\fr $vol \f4\ue015\fr $date "
}

while read -t 1 -r wmout || true; do
    if [[ $wmout =~ ^(([[:digit:]]+:)+[[:digit:]]+ ?)+$ ]]; then
        read -ra desktops <<< "$wmout"

        tmp=
        for desktop in "${desktops[@]}"; do
            IFS=':' read -r d w m c u <<< "$desktop"
            # Tags labels
            label=${tags[$d]}
            # Current desktop color and enclosing char (yes/no)
            ((c)) && fg="9" bg="2" lc="\u4 " rc=" \ur" && layout=${layouts[$m]} || fg="1" bg="0" lc=" " rc=" "
            # Has windows ?
            ((w)) && ((! c)) && fg="1" lc="\u6 " rc=" \ur"
            # Urgent windows ?
            ((u)) && fg="1" bg="3" lc="\u4 " rc=" \ur"

            tmp+="\f$fg\b$bg$lc$label$rc\fr\br"
        done
        # Merge the clients indications and the tile mode
        tmp+=" $layout"
    fi
    echo "$tmp $(statusbar)"
done < "$ff" | bar &

#while :; do "$wm" || break; done | tee -a "$ff"
$wm > "$ff"

rm $ff