#!/bin/bash

download()
{
    tput civis
    local url=$1
    echo -n "    "
    wget -nc -q --show-progress --progress=dot "$url" 2>&1 | grep --line-buffered "%" | \
        sed -u -e "s,\.,,g" | awk '{printf("\b\b\b\b%4s", $2)}'
	local retval="${PIPESTATUS[0]}"
	if [ "${retval}" -ne 0 ]; then
		printf "%b" "${RED}FAILED! WGET EXIT (${retval})\n${RST}"
		exit "${retval}"
	fi
    tput cnorm
}

export -f download

## spinner takes the pid of the process as the first argument and
#  string to display as second argument (default provided) and spins
#  until the process completes.
spinner() {
    local proc="$1"
    #local str="${2:-'Copyright of KatworX© Tech. Developed by Arjun Singh Kathait and Debugged by the ☆Stack Overflow Community☆'}"
	local str=""
    local delay="0.1"
    tput civis  # hide cursor
    printf "%b" "${WHT}"
    while [ -d /proc/"$proc" ]; do
        #-\|/
        #⠁⠂⠄⡀⢀⠠⠐⠈
        #▁▂▃▄▅▆▇█▇▆▅▄▃▂▁
        #←↖↑↗→↘↓↙
        #▖▘▝▗
        #◢◣◤◥
        #┤┘┴└├┌┬┐
        #◰◳◲◱
        #◴◷◶◵
        #◐◓◑◒
        #⣾⣽⣻⢿⡿⣟⣯⣷
        printf '\033[s\033[u[ ▁ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▂ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▃ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▄ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▅ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▆ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▇ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ █ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▇ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▆ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▅ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▄ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▃ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▂ ] %s\033[u' "$str"; sleep "$delay"
        printf '\033[s\033[u[ ▁ ] %s\033[u' "$str"; sleep "$delay"
    done
    wait "${proc}"
    retval=$?
    printf '\033[s\033[u%*s\033[u\033[0m' $((${#str}+6)) " "  # return to normal
    tput cnorm  # restore cursor
    return $retval
}

export -f spinner