An URL shortener using a free bit.ly account.

urlshort.sh

#!/usr/bin/env bash
# urlshort.sh
#############
#
# An URL shortener using a free bit.ly account.
#
# Before running this script, you're gonna need a bitly access token.
#
# INSTRUCTIONS:
# 1. Create an account at https://bitly.com
# 2. Once you're logged in and in your dashboard:
#     - click on your account name on the top-right corner
#     - Profile Settings > Generic Access Token
#     - enter your password and you'll get your token
# 3. Copy your token and paste it in the BITLY_TOKEN declaration below
#
# meleu - February/2020

readonly BITLY_TOKEN=''
readonly BITLY_ENDPOINT='https://api-ssl.bitly.com/v4/shorten'

shortener() {
  local long_url="$1"
  while [[ -z "$long_url" ]]; do
    read -r -p "Digite a url: " long_url
  done
  curl -s \
    --header "Authorization: Bearer ${BITLY_TOKEN}" \
    --header "Content-Type: application/json" \
    --data "{\"long_url\":\"${long_url}\"}" \
    "${BITLY_ENDPOINT}" \
    | jq -r 'if .link == null then .description else .link end'
}

if [[ -z "$BITLY_TOKEN" ]]; then
  echo "ERROR: API access token not found" >&2
  echo "(have you filled the BITLY_TOKEN variable with your token?)" >&2
  exit 1
fi

shortener "$@"