import socket
import threading
import socketserver
import json
import time
import sys
import sched

from command import CommandFactory, Command

class RequestHandler(socketserver.BaseRequestHandler):
	BUFSIZE = 4096

	def handle(self):
		
		data = self.getData()

		# check if the request is not empty (aka pings)
		if not data:
			pass
		else:
			try:
				jsonObject = json.loads(data)

				# throw it into the command processor
				factory = CommandFactory(jsonObject)
				command = factory.getCommand()

				command.execute()
				response = command.getStatus()

				assert(isinstance(response, dict))
				self.request.sendall(json.dumps(response))
			except Exception, e:
				pass # TODO: log the error

	def getData(self, timeout = 3):
		total_data = []
		end = False
		self.request.setblocking(0)

		begin = time.time()
		while not end:
			# if got some data, break after wait sec
			if total_data and time.time() - begin > timeout:
				end = True
			else:
				# if no data, break after 2x the timeout
				if time.time() - begin > timeout * 2:
					end = True
				else:
					try:
						data = self.request.recv(RequestHandler.BUFSIZE, 'utf-8')
						if not data:
							time.sleep(0.1)
						else:
							total_data.append(data)
							begin = time.time()

					except Exception, e:
						# TODO: log the error
						end = True

		return ''.join(total_data)


class ThreadedTcpServer(socketserver.ThreadingMixIn, socketserver.TCPServer):
	pass

def connectTracker():
	factory = CommandFactory({
		'method': Command.METHOD_JOIN
	})

	command = factory.getCommand()
	command.execute()

	# TODO: get the status, then add the servers to the activeServers list

def findItem(server, ip, port):
	pass

if __name__ == '__main__':
	HOST, PORT = 'localhost', sys.argv[1]

	server = ThreadedTcpServer((HOST, PORT), RequestHandler)

	# start a server thread
	server_thread = threading.Thread(target=server.serve_forever)

	# exit the server thread when the main thread ends
	server_thread.daemon = True
	server_thread.start()

	print("Server running on thread: ", server_thread.name)

	server_thread.stop()