#!/bin/sh

display() {
    tput setaf 3
    echo -n $1
    echo -n " "
    tput setaf 5
    echo $2
}

field() {
    num=$1
    shift
    echo $@ | cut -d ' ' -f $num
}

show_colors() {
    for i in $(seq $1 $2)
    do
        tput setab $i
        echo -n "   "
    done
    tput setab reset
    echo
}

display " " "$HOSTNAME"
display " " "$(uname -sr)"
display " " "$(yay -Qq | wc -l)"

diskinfo=$(df -h / | tail -n 1)
useddisk=$(field 3 $diskinfo)
totaldisk=$(field 2 $diskinfo)

display " " "${useddisk::-1}/${totaldisk::-1} GB ($(field 5 $diskinfo))"

raminfo=$(free --mega | head -n 2 | tail -n 1)
usedram=$(field 3 $raminfo)
totalram=$(field 2 $raminfo)

display " " "$usedram/$totalram MB ($(($usedram*100/$totalram))%)"

tput setaf reset

show_colors 0 7
show_colors 8 15