class Bundler::CLI::Update

def run
  Bundler.ui.level = "warn" if options[:quiet]
  update_bundler = options[:bundler]
  Bundler.self_manager.update_bundler_and_restart_with_it_if_needed(update_bundler) if update_bundler
  Plugin.gemfile_install(Bundler.default_gemfile) if Bundler.feature_flag.plugins?
  sources = Array(options[:source])
  groups  = Array(options[:group]).map(&:to_sym)
  full_update = gems.empty? && sources.empty? && groups.empty? && !options[:ruby] && !update_bundler
  if full_update && !options[:all]
    if Bundler.feature_flag.update_requires_all_flag?
      raise InvalidOption, "To update everything, pass the `--all` flag."
    end
    SharedHelpers.major_deprecation 3, "Pass --all to `bundle update` to update everything"
  elsif !full_update && options[:all]
    raise InvalidOption, "Cannot specify --all along with specific options."
  end
  conservative = options[:conservative]
  if full_update
    if conservative
      Bundler.definition(conservative: conservative)
    else
      Bundler.definition(true)
    end
  else
    unless Bundler.default_lockfile.exist?
      raise GemfileLockNotFound, "This Bundle hasn't been installed yet. " \
        "Run `bundle install` to update and install the bundled gems."
    end
    Bundler::CLI::Common.ensure_all_gems_in_lockfile!(gems)
    if groups.any?
      deps = Bundler.definition.dependencies.select {|d| (d.groups & groups).any? }
      gems.concat(deps.map(&:name))
    end
    Bundler.definition(gems: gems, sources: sources, ruby: options[:ruby],
                       conservative: conservative,
                       bundler: update_bundler)
  end
  Bundler::CLI::Common.configure_gem_version_promoter(Bundler.definition, options)
  Bundler::Fetcher.disable_endpoint = options["full-index"]
  opts = options.dup
  opts["update"] = true
  opts["local"] = options[:local]
  opts["force"] = options[:redownload]
  Bundler.settings.set_command_option_if_given :jobs, opts["jobs"]
  Bundler.definition.validate_runtime!
  if locked_gems = Bundler.definition.locked_gems
    previous_locked_info = locked_gems.specs.reduce({}) do |h, s|
      h[s.name] = { spec: s, version: s.version, source: s.source.identifier }
      h
    end
  end
  installer = Installer.install Bundler.root, Bundler.definition, opts
  Bundler.load.cache if Bundler.app_cache.exist?
  if CLI::Common.clean_after_install?
    require_relative "clean"
    Bundler::CLI::Clean.new(options).run
  end
  if locked_gems
    gems.each do |name|
      locked_info = previous_locked_info[name]
      next unless locked_info
      locked_spec = locked_info[:spec]
      new_spec = Bundler.definition.specs[name].first
      unless new_spec
        unless locked_spec.match_platform(Bundler.local_platform)
          Bundler.ui.warn "Bundler attempted to update #{name} but it was not considered because it is for a different platform from the current one"
        end
        next
      end
      locked_source = locked_info[:source]
      new_source = new_spec.source.identifier
      next if locked_source != new_source
      new_version = new_spec.version
      locked_version = locked_info[:version]
      if new_version < locked_version
        Bundler.ui.warn "Note: #{name} version regressed from #{locked_version} to #{new_version}"
      elsif new_version == locked_version
        Bundler.ui.warn "Bundler attempted to update #{name} but its version stayed the same"
      end
    end
  end
  Bundler.ui.confirm "Bundle updated!"
  Bundler::CLI::Common.output_without_groups_message(:update)
  Bundler::CLI::Common.output_post_install_messages installer.post_install_messages
  Bundler::CLI::Common.output_fund_metadata_summary
end