#!/bin/bash

mapfile -t mountpoints < <( df -h | grep ^/dev/ | grep -v efi | awk '{print $6;}' )
IFS=$'\n' mountpoints=($(sort <<<"${mountpoints[*]}"))
unset IFS

barWidth=38
maxDiscUsage=85
midDiscUsage=45
clear="\e[39m\e[0m"
ok="\e[32m"
alert="\e[33m"
warn="\e[31m"
barclear=""
echo
echo 'HDD free:'
for point in "${mountpoints[@]}"; do
    line=$(df -h "${point}")
    # IFS=" " read fs size used avail use mount $(df -h "${point}")
    usagePercent=$(echo "$line"|tail -n1|awk '{print $5;}'|sed 's/%//')
    usedBarWidth=$((($usagePercent*$barWidth)/100))
    barContent=""
    color="${ok}"
    if [ "${usagePercent}" -ge "${maxDiscUsage}" ]; then
        color="${warn}"
    elif [ "${usagePercent}" -ge "${midDiscUsage}" ]; then
        color="${alert}"
    fi
    barContent="${color}"
    for sep in $(seq 1 $usedBarWidth); do
        barContent="${barContent}―"
    done
    barContent="${barContent}${clear}"
    for sep in $(seq 1 $(($barWidth-$usedBarWidth))); do
        barContent="${barContent}―"
    done
    bar="  ${barContent}${clear}"
	echo "${point}" | awk '{printf("  %-12s", $1); }'
	echo "${line}" | awk  '{if ($1 != "Filesystem") printf("%+8s used out of %+5s\n", $3, $2); }'
	echo -e "${bar}"

done