sprout

#!/usr/bin/env bash

set -e

function use_local_gems() {
  SPROUT_HOME="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
  export SPROUT_HOME
  export GEM_HOME="${SPROUT_HOME}/tmp/ruby/2.0.0"
  export GEM_PATH="${GEM_HOME}"
  export PATH="${GEM_HOME}/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin"

  current_ruby=$(which ruby)
  if [ "${current_ruby}" != '/usr/bin/ruby' ]; then
    echo -e "\033[31mWarning: sprout should be run with system ruby; using '${current_ruby}'\033[0m"
  fi
  echo "# - Using $(${current_ruby} -v)"
}

function ensure_in_sprout_home() {
  if [ "${SPROUT_HOME}" != "$(pwd)" ]; then
    echo "Error: sprout must be run from ${SPROUT_HOME}"
    exit 1
  fi
}

function bundle_exec() {
  if bundler_installed; then
    echo "# - Using $(bundle -v)"
  else
    gem install bundler --no-document
  fi

  if bundle check > /dev/null 2>&1; then
    echo '# - Gemfile dependencies satisfied'
  else
    bundle install --jobs 6
  fi

  bundle exec "${@}"
}

function bundler_installed() {
  command -v bundle > /dev/null
}

function update_resources() {
  gem install bundler --no-document
  bundle update
  bundle exec librarian-chef update
}

function main() {
  use_local_gems
  ensure_in_sprout_home

  case "${1}" in
    '')
      export LOG_LEVEL="warn" # make chef less noisy
      bundle_exec soloist
      ;;
    exec)
      shift
      bundle_exec "${@}"
      ;;
    update)
      update_resources
      ;;
    *)
      echo "Usage:"
      echo "  sprout               - install dependencies and run 'soloist'"
      echo "  sprout exec some cmd - run 'some cmd' in this cookbooks's bundler context"
      echo "  sprout update:       - update gems and cookbook dependencies"
  esac
}

main "${@}"