#  includes/comm.py
#  
#  module version: 0.0.20130426
#


import statuscodes


class comm:
	
	aliases = dict()
	server_version = ""
	protocol_version = ""
	verbosity = 0
	
	# initializes global settings
	def init(ServerVersion, ProtocolVersion, Verbosity, Aliases):
		
		aliases = Aliases
		server_version = ServerVersion
		protocol_version = ProtocolVersion
		verbosity = Verbosity
	
	def header(statuscode, AdditionalHeaderLines = ""):
		"""
		returns the header
		"""
		
		ret =\
			"{BEGIN}\n"\
			"asrcp" + protocol_version + "\n"\
			statuscode + " " + statuscodes.description[statuscodes] + "\n"\
			"ServerVersion:" + server_version + "\n"
		if AdditionalHeaderLines != "": ret += AdditionalHeaderLines + "\n"
		ret += "\n\n"
		
		return ret
	
	# returns the motd
	def motd(motd):
		"""
		builds and returns a motd package
		"""
		
		ret = motd
		
		return ret
	
	# handles the content
	def command(client_address, data):
		"""
		processes a command
		"""
		
		ret = ""
		
		# Look if the received message is an
		# valid alias or a predefined command
		
		# if it's 'version', return the server and protocol version
		if data == "version":
			
			if verbosity >= 2: print("Got valid service command from"
				+ str(client_address) + ": ", data)
			
			ret = ret +\
				"202 Valid Service Command\n"\
				"002 Version\n"\
				"ServerVersion:" + server_version + "\n"\
				"ProtocolVersion:" + protocol_version + "\n"
		
		# if it's 'help', give a little help
		elif data == 'help':
			
			if verbosity >= 2: print("Got valid command from"
				+ str(client_address) + ": ", data)
			
			# send status code
			ret = ret + "202 Valid Service Command\n\n"
			
			# send the list of aliases
			ret = ret + "Aviable aliases:\n"
			for i in aliases.keys():
				ret = ret + str(i) + "\n"
		
		# if it's a valid userdefined command
		elif data in aliases:
			
			# send status code
			ret = ret + "201 Valid Command\n\n"
			
			# ohmagawd! a debug message!!1!
			if verbosity >= 2: print("Got valid command from"
				+ str(client_address) + ": ", data)
			
			# execute the aliased command
			g_dict, l_dict = {}, {}
			exec(str(aliases[data]), g_dict, l_dict)
			
			# send may contain data to send to the client
			if l_dict["send"]:
					content = str(l_dict["send"]).replace('{', '\{')
					content = content.replace('}', '\}')
					
					ret = ret + content + "\n"
		
		# ALL IS LOST!!1! this has to be invalid!
		else:
			
			# send status code
			ret = ret + "203 Invalid Command\n"
			
			if verbosity >= 2: print("Got invalid command from",
				str(client_address), ": ", data)
		
		ret = ret + "{END}\n"
		
		return ret