require "io/hexdump"

def to_message (user_type : Int, message : String)
	payload = Bytes.new (6 + message.to_slice.size)

	# true start
	payload[0] = 1.to_u8
	IO::ByteFormat::NetworkEndian.encode message.to_slice.size, (payload + 1)

	# second part: user message
	payload[5] = user_type.to_u8
	(payload + 6).copy_from message.to_slice

	return payload
end

def print_hexa(message : String, aroundmsg : String)
	puts "#{aroundmsg} [["
	m = IO::Memory.new(message)
	io = IO::Hexdump.new(m, output: STDERR, read: true)
	buffer = Bytes.new 4000
	io.read (buffer) # reading = should print
	puts "]] #{aroundmsg}"
end

# str = to_message(42, "coucou")
# print_hexa str, "message sent"
# ws.send str