import socket
import select
import logging
from threading import Thread

from .client import Client

logger = logging.getLogger(__name__)

class Server(Thread):
	BUFF_SIZE = 65535

	def __init__(self, host, port):
		super(Server, self).__init__()
		self.daemon = True
		self.host = host
		self.port = port
		self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
		self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
		self.socket.bind((self.host, self.port))
		self.socket.setblocking(0)

		self.clients = {}
	
	def run(self):
		# Main server loop
		while True:
			(incomming, _, _) = select.select(
				[self.socket],
				[],
				[], 1)
			
			if incomming:
				data, addr = self.socket.recvfrom(self.BUFF_SIZE)

				if addr in self.clients:
					self.clients[addr].handle_data(data)
				else:
					try:
						self.clients[addr] = Client(self, addr)
						logger.info("Accepted connection from %s:%s" % (addr[0], addr[1]))
						self.clients[addr].handle_data(data)
					except socket.error:
						try:
							self.socket.close()
						except:
							pass
						logger.warn("Something went very wrong...")
						#exit()
						return
			
			clients = [x for x in self.clients.values()
				  if x.get_buffer_size() > 0]

			for client in clients:
				client.write_socket()

			"""for c in self.clients.values():
				print(c.__writebuffer)"""

	def restart(self):
		[c.restart() for c in self.clients]