#!/usr/bin/env bash

# -----------------------------------------------------------------------------
# Safety settings (see https://gist.github.com/ilg-ul/383869cbb01f61a51c4d).

if [[ ! -z ${DEBUG} ]]
then
  set ${DEBUG} # Activate the expand mode if DEBUG is anything but empty.
else
  DEBUG=""
fi

set -o errexit # Exit if command failed.
set -o pipefail # Exit if pipe failed.
set -o nounset # Exit if variable not set.

# Remove the initial space and instead use '\n'.
IFS=$'\n\t'

# -----------------------------------------------------------------------------

script=$0
if [[ "${script}" != /* ]]
then
  # Make relative path absolute.
  script=$(pwd)/$0
fi

parent="$(dirname ${script})"
# echo $parent

# -----------------------------------------------------------------------------

# https://docs.travis-ci.com/user/environment-variables/#Default-Environment-Variables

# For local build, provide 
# - TRAVIS=false
# - TRAVIS_OS_NAME=osx|linux

# - TRAVIS_REPO_SLUG=<user>/<repo>

# -----------------------------------------------------------------------------

function do_run()
{
  echo "\$ $@"
  "$@"
}

# -----------------------------------------------------------------------------

# Errors in this function will break the build.
function do_before_install() {

  echo
  echo "Nothing to do before install..."
  # echo "Before install; bringing in extra tools..."

  return 0
}

# Errors in this function will break the build.
function do_before_script() {

  echo
  echo "Nothing to do before starting the tests..."
  # echo "Before starting the tests..."

  # Travis automatically runs `npm install`, which will install
  # all development dependencies.

  return 0
}

# Errors in this function will break the build.
function do_script() {

  echo
  echo "Performing the tests..."

  do_run npm test

  echo
  echo "PASSED"
  return 0
}

# Errors in the following function will not break the build.

function do_after_success() {

  echo "Nothing to do after success..."
  return 0
}

function do_after_failure() {

  echo "Nothing to do after failure..."
  return 0
}

function do_deploy() {

  echo "Nothing to do to deploy..."
  return 0
}

function do_after_script() {

  echo "Nothing to do after script..."
  return 0
}

# -----------------------------------------------------------------------------

# https://docs.travis-ci.com/user/customizing-the-build/#The-Build-Lifecycle

# - OPTIONAL Install apt addons
# - OPTIONAL Install cache components
# - before_install
# - install
# - before_script
# - script
# - OPTIONAL before_cache (for cleaning up cache)
# - after_success or after_failure
# - OPTIONAL before_deploy
# - OPTIONAL deploy
# - OPTIONAL after_deploy
# - after_script

if [ $# -ge 1 ]
then
  action=$1
  shift

  case ${action} in

  before_install)
    do_before_install "$@"
    ;;

  before_script)
    do_before_script "$@"
    ;;

  script)
    do_script "$@"
    ;;

  after_success)
    do_after_success "$@"
    ;;

  after_failure)
    do_after_failure "$@"
    ;;

  deploy)
    do_deploy "$@"
    ;;

  after_script)
    do_after_script "$@"
    ;;

  *)
    echo "Unsupported command" "${action}" "$@"
    exit 1
    ;;
    
  esac
  exit 0
else
  echo "Missing command"
  exit 1
fi

# -----------------------------------------------------------------------------