break.sh

#!/usr/bin/bash

function h2s() {
    local hours=$1
    echo "${wait_time:0:-1} * 3600" | bc | cut -d. -f1
}

function humanize_duration() {
    local total_seconds=$1
    local hours=$(( $total_seconds / 3600 ))
    local minutes=$(( ($total_seconds - $hours * 3600) / 60 ))
    local seconds=$(( $total_seconds % 60 ))

    printf "%02d:%02d:%02d" ${hours} ${minutes} ${seconds}
}

function clear_line() {
    echo -ne "\033[K"
}


wait_time="1.25h"
notification_timeout_ms=600000
wait_seconds=$(h2s $wait_time)
breaks_count=1

echo

while true; do
    clear_line

    echo -ne "\r($breaks_count) Next break in: $(humanize_duration $wait_seconds)"

    if [[ $wait_seconds == 0 ]]; then
        notify-send -t ${notification_timeout_ms} "Break may be?"
        echo
        (( breaks_count++ ))
        wait_seconds=$(h2s $wait_time)
        continue
    fi

    sleep 1
    (( wait_seconds-- ))
done