# frozen_string_literal: true
module Opal
module CliRunners
class Server
def initialize(options)
@output = options.fetch(:output, $stdout)
@port = options.fetch(:port, ENV['OPAL_CLI_RUNNERS_SERVER_PORT'] || 3000).to_i
@static_folder = options[:static_folder] || ENV['OPAL_CLI_RUNNERS_SERVER_STATIC_FOLDER']
@static_folder = @static_folder == true ? 'public' : @static_folder
@static_folder = File.expand_path(@static_folder) if @static_folder
end
attr_reader :output, :port, :server, :static_folder
def run(source, argv)
unless argv.empty?
raise ArgumentError, 'Program arguments are not supported on the Server runner'
end
require 'rack'
require 'webrick'
require 'logger'
app = build_app(source)
@server = Rack::Server.start(
app: app,
Port: port,
AccessLog: [],
Logger: Logger.new(output),
)
end
def exit_status
nil
end
def build_app(source)
app = App.new(source)
if static_folder
not_found = [404, {}, []]
app = Rack::Cascade.new(
[
Rack::Static.new(->(_) { not_found }, urls: [''], root: static_folder),
app
],
)
end
app
end
class App
def initialize(source)
@source = source
end
BODY = <<-HTML
HTML
def call(env)
case env['PATH_INFO']
when '/'
[200, { 'Content-Type' => 'text/html' }, [BODY]]
when '/cli_runner.js'
[200, { 'Content-Type' => 'text/javascript' }, [@source]]
else
[404, {}, ['not found']]
end
end
end
end
end
end