module NodeJs

module Helper

def npm_dist

if node['nodejs']['npm']['url']

return { 'url' => node['nodejs']['npm']['url'] }

else

require 'open-uri'

require 'json'

result = JSON.parse(URI.parse("https://registry.npmjs.org/npm/#{node['nodejs']['npm']['version']}").read, :max_nesting => false)

ret = { 'url' => result['dist']['tarball'], 'version' => result['_npmVersion'], 'shasum' => result['dist']['shasum'] }

Chef::Log.debug("Npm dist #{ret}")

return ret

end

end

def npm_list(path = nil)

require 'json'

if path

cmd = Mixlib::ShellOut.new('npm list -json', :cwd => path)

else

cmd = Mixlib::ShellOut.new('npm list -global -json')

end

JSON.parse(cmd.run_command.stdout, :max_nesting => false)

end

def url_valid?(list, package)

list.fetch(package, {}).fetch('resolved', '').include?('url')

end

def version_valid?(list, package, version)

(version ? list[package]['version'] == version : true)

end

def npm_package_installed?(package, version = nil, path = nil)

list = npm_list(path)['dependencies']

# Return true if package installed and installed to good version

(!list.nil?) && list.key?(package) && version_valid?(package, list, version) && url_valid?(list, package)

end

end

end