Publish a local directory to ngrok.io using ngrok and python

publish-dir-with-ngrok.sh

#!/usr/bin/env bash

# Bail on errors
set -e


# Default to using port 8080 if PORT is not set
PORT="${PORT:-8080}"
echo >&2 "Using port ${PORT}"


# Default to using the US region if REGION is not set
#  us - United States (Dallas), eu - Europe (Frankfurt), ap - Asia/Pacific (Singapore), au - Australia (Sydney)
REGION="${REGION:-us}"
echo >&2 "Using ngrok servers in ${REGION}"


# Make sure that when the scripe exits it kills any processes that we backgrounded
trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT


# change dir into the data dir
pushd data

    # Check which python major version is available and start a simple http server accordingly
    if [[ "$(python -c 'import sys; print(sys.version_info[0])')" == "3"* ]]; then
      python -m http.server "${PORT}" &
    else
      python -m SimpleHTTPServer "${PORT}" &
    fi

    echo >&2 "Hosting files in '$(pwd)' on http://localhost:${PORT}"
popd

ngrok http -log=stderr -region="${REGION}" -inspect=false "${PORT}"  &

# wait 5 seconds for ngrok to start up
sleep 5

# curl the ngrok client's API and extract the public url
PUBLIC_URL="$(curl --silent http://localhost:4040/api/tunnels/command_line | jq --raw-output .public_url)"

echo >&2 "Tunneled port ${PORT} to ${PUBLIC_URL}."
echo "${PUBLIC_URL}"

# Loop until the user kills us
echo -e >&2 "\n -------------- Success! -------------- \n $(pwd)/data is published to ${PUBLIC_URL}.\n To stop kill this process (Ctrl+c). \n\n"
while true; do
  sleep 10
done