class Guard::Bundler

def bundle_check
  gemfile_lock_mtime = File.exist?('Gemfile.lock') ? File.mtime('Gemfile.lock') : nil
  ::Bundler.with_unbundled_env do
    `bundle check`
  end
  return false unless $? == 0
  if gemfile_lock_mtime && gemfile_lock_mtime == File.mtime('Gemfile.lock')
    :bundle_already_up_to_date
  else
    :bundle_installed_using_local_gems
  end
end

def bundle_install
  Guard::Compat::UI.info 'Bundling...', reset: true
  ::Bundler.with_unbundled_env do
    system("bundle install#{" #{options[:cli]}" if options[:cli]}")
  end
  $? == 0 ? :bundle_installed : false
end

def cli?
  !!options[:cli]
end

def refresh_bundle
  start_at = Time.now
  result = bundle_check || bundle_install
  duration = Time.now - start_at
  case result
  when :bundle_already_up_to_date
    Guard::Compat::UI.info 'Bundle already up-to-date', reset: true
  when :bundle_installed_using_local_gems
    Guard::Compat::UI.info 'Bundle installed using local gems', reset: true
    Notifier.notify 'bundle_check_install', nil
  when :bundle_installed
    Guard::Compat::UI.info 'Bundle installed', reset: true
    Notifier.notify true, duration
  else
    Guard::Compat::UI.info "Bundle can't be installed -- Please check manually", reset: true
    Notifier.notify false, nil
  end
  result
end

def reload
  refresh_bundle
end

def run_all
  refresh_bundle
end

def run_on_additions(paths = [])
  refresh_bundle
end

def run_on_modifications(paths = [])
  refresh_bundle
end

def start
  refresh_bundle
end