class Bundler::CLI::Add

def initialize(options, gems)
  @gems = gems
  @options = options
  @options[:group] = options[:group].split(",").map(&:strip) unless options[:group].nil?
  @version = options[:version].split(",").map(&:strip) unless options[:version].nil?
end

def inject_dependencies
  dependencies = gems.map {|g| Bundler::Dependency.new(g, version, options) }
  Injector.inject(dependencies,
    :conservative_versioning => options[:version].nil?, # Perform conservative versioning only when version is not specified
    :optimistic => options[:optimistic],
    :strict => options[:strict])
end

def perform_bundle_install
  Installer.install(Bundler.root, Bundler.definition)
  Bundler.load.cache if Bundler.app_cache.exist?
end

def run
  validate_options!
  inject_dependencies
  perform_bundle_install unless options["skip-install"]
end

def validate_options!
  raise InvalidOption, "You can not specify `--strict` and `--optimistic` at the same time." if options[:strict] && options[:optimistic]
  # raise error when no gems are specified
  raise InvalidOption, "Please specify gems to add." if gems.empty?
  version.to_a.each do |v|
    raise InvalidOption, "Invalid gem requirement pattern '#{v}'" unless Gem::Requirement::PATTERN =~ v.to_s
  end
end