class Bundler::RubygemsIntegration::Future

def all_specs
  Gem::Specification.to_a
end

def build(spec, skip_validation = false)
  require "rubygems/package"
  Gem::Package.build(spec, skip_validation)
end

def download_gem(spec, uri, path)
  uri = Bundler.settings.mirror_for(uri)
  fetcher = gem_remote_fetcher
  fetcher.headers = { "X-Gemfile-Source" => spec.remote.original_uri.to_s } if spec.remote.original_uri
  Bundler::Retry.new("download gem from #{uri}").attempts do
    fetcher.download(spec, uri, path)
  end
end

def fetch_all_remote_specs(remote)
  source = remote.uri.is_a?(URI) ? remote.uri : URI.parse(source.to_s)
  specs = fetch_specs(source, remote, "specs")
  pres = fetch_specs(source, remote, "prerelease_specs") || []
  specs.concat(pres)
end

def fetch_specs(source, remote, name)
  path = source + "#{name}.#{Gem.marshal_version}.gz"
  fetcher = gem_remote_fetcher
  fetcher.headers = { "X-Gemfile-Source" => remote.original_uri.to_s } if remote.original_uri
  string = fetcher.fetch_path(path)
  Bundler.load_marshal(string)
rescue Gem::RemoteFetcher::FetchError => e
  # it's okay for prerelease to fail
  raise e unless name == "prerelease_specs"
end

def find_name(name)
  Gem::Specification.find_all_by_name name
end

def gem_from_path(path, policy = nil)
  require "rubygems/package"
  p = Gem::Package.new(path)
  p.security_policy = policy if policy
  p
end

def gem_remote_fetcher
  require "resolv"
  proxy = configuration[:http_proxy]
  dns = Resolv::DNS.new
  Bundler::GemRemoteFetcher.new(proxy, dns)
end

def install_with_build_args(args)
  yield
end

def path_separator
  Gem.path_separator
end

def repository_subdirectories
  Gem::REPOSITORY_SUBDIRECTORIES
end

def stub_rubygems(specs)
  Gem::Specification.all = specs
  Gem.post_reset do
    Gem::Specification.all = specs
  end
  redefine_method((class << Gem; self; end), :finish_resolve) do |*|
    []
  end
end