class Falcon::Command::Serve

def cache?
	@options[:cache]
end

def call
	Async.logger.info(self) do |buffer|
		buffer.puts "Falcon v#{VERSION} taking flight! Using #{self.container_class} #{self.container_options}."
		buffer.puts "- Binding to: #{self.endpoint}"
		buffer.puts "- To terminate: Ctrl-C or kill #{Process.pid}"
		buffer.puts "- To reload configuration: kill -HUP #{Process.pid}"
	end
	
	if path = @options[:preload]
		full_path = File.expand_path(path)
		load(full_path)
	end
	
	Bundler.require(:preload)
	
	if GC.respond_to?(:compact)
		GC.compact
	end
	
	self.controller.run
end

def client
	Async::HTTP::Client.new(client_endpoint)
end

def client_endpoint
	Async::HTTP::Endpoint.parse(@options[:bind], **endpoint_options)
end

def container_class
	case @options[:container]
	when :threaded
		return Async::Container::Threaded
	when :forked
		return Async::Container::Forked
	when :hybrid
		return Async::Container::Hybrid
	end
end

def container_options
	slice_options(:count, :forks, :threads)
end

def controller
	Controller::Serve.new(self)
end

def endpoint
	Endpoint.parse(@options[:bind], **endpoint_options)
end

def endpoint_options
	slice_options(:hostname, :port, :reuse_port, :timeout)
end

def load_app
	rack_app, _ = Rack::Builder.parse_file(@options[:config])
	
	return Server.middleware(rack_app, verbose: self.verbose?, cache: self.cache?)
end

def slice_options(*keys)
	# TODO: Ruby 2.5 introduced Hash#slice
	options = {}
	
	keys.each do |key|
		if @options.key?(key)
			options[key] = @options[key]
		end
	end
	
	return options
end

def verbose?
	@parent&.verbose?
end