#/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com
# forked by Gianluca Guarini

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
  echo "$changed_files" | grep -E --quiet "$1" && eval "$2"
}

# `npm install` and `npm prune` if the `package.json` file gets changed
# to update all the nodejs ( grunt ) dependencies deleting the unused packages (not listed into the  `package.json` file)
check_run package.json "npm install && npm prune"

# `bower install` and `bower prune` if the `bower.json` file gets changed
# to install all the frontend dependencies removing the unused packages ( not listed into the  `bower.json` file )
check_run bower.json "bower install && bower prune"

# `composer install` if the `composer.json` file gets changed
# to update all the php dependencies
check_run composer "sudo composer install"

# for the sass files we need a bit more
if [ -f "config.rb" ]
then
	# `compass compile` to compile all the scss files when they get changed
	check_run ".scss|.sass" "compass compile"

# check whether there is a gruntfile in the root of the project
elif [[ -n $(find . -maxdepth 1 -iname "gruntfile.js" -o -iname "gruntfile.coffee") ]]
	then
	# try to compile just using grunt sass
	check_run ".scss|.sass" "grunt sass"

# check whether there is a gulpfile in the root of the project
elif [[ -n $(find . -maxdepth 1 -iname "gulpfile.js" -iname "gulpfile.coffee") ]]
	then
	# try to compile just using grunt sass
	check_run ".scss|.sass" "gulp sass"
fi