A wise way to spend your remaining internet data

geget

#!/usr/bin/env bash

usage()
{
  clear
  echo
  RESET_ATTR="$(tput sgr0)"
  COLOR_GREEN="$(tput setaf 2)"
  COLOR_DARK_GREY="$(tput setaf 245)"
  COLOR_DARK_BLUE="$(tput setaf 046)"
  echo "geget,  Version 0.0.1"
  echo
  echo "A ${COLOR_GREEN}wise way${RESET_ATTR} to spend your remaining internet data."
  echo
  echo "Usage:   ${COLOR_GREEN}$0 [-q|--quota] quota{M|G}${RESET_ATTR}"
  echo
  echo "Where:   ${COLOR_GREEN}quota${RESET_ATTR} is either in GB (1G or 2.3G),"
  echo "               or in MB (Must be greater or equal than 100.)."
  echo
  echo "Example: ${COLOR_GREEN}$0 -q 2G${RESET_ATTR}"
  echo "         ${COLOR_GREEN}$0 -q 1.5G${RESET_ATTR}"
  echo "         ${COLOR_GREEN}$0 -q 700M${RESET_ATTR}"
  echo
  echo "Written by ${COLOR_DARK_GREY}Apip${RESET_ATTR}"
  echo "${COLOR_DARK_BLUE}https://bluemeda.web.id${RESET_ATTR}"
  echo

  exit 2
}

calculate()
{
  QUOTA_NUM=${1%?}
  URL="https://sgp-ping.vultr.com/vultr.com.100MB.bin"

  if [[ $QUOTA =~ .+[G]$ ]]; then 
    QUOTA_NUM="$(echo "${QUOTA_NUM} * 1000" | bc)"
  elif [[ 1 -eq "$(echo "${QUOTA_NUM} < 100" | bc)" ]]; then
    usage
  fi

  LOOP="$(echo "${QUOTA_NUM} / 100" | bc)"

  for (( i = 0; i < $LOOP; i++ )); do
    curl -# -H 'Cache-Control: no-cache' --output /dev/null $URL

    TOTAL_DATA=$(((i+1)*100))
    DATA_UNIT="MB"

    if [[ $TOTAL_DATA -gt 1000 ]]; then
      TOTAL_DATA="$(echo "scale=1; ${TOTAL_DATA} / 1000" | bc)"
      DATA_UNIT=GB
    fi
    echo "${TOTAL_DATA}${DATA_UNIT}"
  done
}

case $1 in
  -q | --quota )
    shift; QUOTA=$1
    ;;
  *)
    usage
    ;;
esac; shift

if [[ $QUOTA =~ ^[0-9]+\.?[0-9]*[GM]$ ]]; then
  calculate $QUOTA
else
  usage
fi