update-gem

#!/bin/sh
# update-gem
# Update gem in main appliation and all engines, if any.
#
# Notes:
# Must be run from root directory
# Must have postit installed, which makes sure Bundler versions defined in
# Gemfile.lock are respected.
# Takes one argument, the name of the gem
# example usage: `bin/update-gem rails`

set -euo pipefail

__gem_update__() {
  GEM=$1
  PROJECT_ROOT=$(git rev-parse --show-toplevel)

  if [ $(pwd) != $PROJECT_ROOT ]
  then
    echo "Must be run from project root."
    exit 1
  fi

  echo "Updating $1 in main application..."
  postit update $GEM
  printf "\n"

  if [ ! -d "engines" ] || [ $(find ./engines/ -type d -d 1 | wc -l) -lt 1 ] 
  then
    echo "No engines exist. Skipping engine gem updates."
    exit 0
  fi

  for DIR in $(find ./engines -type d -d 1)
  do
    cd $DIR
    echo "Updating $GEM in $(basename $PWD)..."
    postit update $GEM
    cd $PROJECT_ROOT
    printf "\n"
  done

  echo "Done!"
  exit 0
}

__gem_update__ $1