#!/bin/python3

import signal
import socket
import sys
import os

from ctypes import *

import threading

so_libskiplist_path = './libskiplist.so'

lib = cdll.LoadLibrary(so_libskiplist_path)

skiplist_cmp_t = CFUNCTYPE(c_int,c_void_p,c_void_p)

lib.skiplist_create.restype = c_int
lib.skiplist_create.argtypes = [c_void_p,c_double,c_void_p]

lib.skiplist_insert.restype = c_int
lib.skiplist_insert.argtypes = [c_void_p,c_void_p,c_void_p]

lib.skiplist_erase.restype = c_int
lib.skiplist_erase.argtypes = [c_void_p,c_void_p,c_void_p]

lib.skiplist_exist.restype = c_int
lib.skiplist_exist.argtypes = [c_void_p,c_void_p,c_void_p]

lib.skiplist_begin.restype = c_int
lib.skiplist_begin.argtypes = [c_void_p,c_void_p]

lib.skiplist_end.restype = c_int
lib.skiplist_end.argtypes = [c_void_p,c_void_p]

lib.skiplist_iterator_equal.restype = c_int
lib.skiplist_iterator_equal.argtypes = [c_void_p,c_void_p]
 
lib.skiplist_iterator_value.restype = c_void_p
lib.skiplist_iterator_value.argtypes = [c_void_p]

lib.skiplist_iterator_next.argtypes = [c_void_p]

lib.skiplist_iterator_prev.argtypes = [c_void_p]

lib.skiplist_destroy.restype = c_int
lib.skiplist_destroy.argtypes = [c_void_p]

c_int_p = POINTER(c_int)

def __int_cmp(a,b):
	_a = cast(a,c_int_p)
	_b = cast(b,c_int_p)	
	return _a.contents.value - _b.contents.value

def __int_show(v):
	_v = cast(v,c_int_p)
	print(_v.contents.value,end=" ")

int_cmp = skiplist_cmp_t(__int_cmp)
HOST = '0.0.0.0'
PORT = 8001

class int_set:

	class iterator:
	
		def __init__(self,show):
			self.it = c_void_p()
			self._show = show
			return
		
		def __eq__(self,o):
			return (lib.skiplist_iterator_equal(addressof(self.it),addressof(o.it)) == 1)
		
		def next(self):
			lib.skiplist_iterator_next(addressof(self.it))
			return
		
		def prev(self):
			lib.skiplist_iterator_prev(addressof(self.it))
			return
		
		def value(self):
			pvalue = lib.skiplist_iterator_value(addressof(self.it))
			_v = cast(pvalue,c_int_p)
			v = int(_v.contents.value)
			return v
		
		def show(self):
			pvalue = lib.skiplist_iterator_value(addressof(self.it))
			self._show(pvalue)		
			return
	
	def __init__(self,int_cmp):
		self.sl = c_void_p()
		self.array = []
		self.errno = lib.skiplist_create(addressof(self.sl),0.25,int_cmp)
		return

	def __del__(self):
		errno = lib.skiplist_destroy(addressof(self.sl))
		return

	def begin(self,it):
		errno = lib.skiplist_begin(self.sl,addressof(it.it))
		return

	def end(self,it):
		errno = lib.skiplist_end(self.sl,addressof(it.it))
		return

	def insert(self,key):
		self.array.append(c_int(key))
		errno = lib.skiplist_insert(self.sl,addressof(self.array[len(self.array) - 1]),addressof(self.array[len(self.array) - 1]))
		if errno != 0:
			self.array.pop()
		return
	
	def erase(self,key,ret):
		_key = c_int(key)
		retvalue = c_int(0)
		errno = lib.skiplist_erase(self.sl,address(_key),addressof(retvalue))
		if errno == 0 :
			ret = int(retvalue)
			return True
		else :
			ret = -1
			return False
	
	def exist(self,key,ret):
		_key = c_int(key)
		retvalue = c_int(0)
		errno = lib.skiplist_exist(self.sl,addressof(_key),addressof(retvalue))
		if errno == 0 :
			return True
		else :
			return False

s = int_set(int_cmp)

conn_pool = []

number = 65536

class MyThread(threading.Thread):
	
	lock = threading.Lock()
	
	def __init__(self,conn):
		super(MyThread,self).__init__()
		self.conn = conn
		return

	def run(self):
		while True:
			request = self.conn.recv(1024)
			string = request.decode("UTF-8")
			if len(string) == 0:
				break
			if string.isdigit() == False:
				print(string)	
				self.conn.sendall(bytes("不是数字","UTF-8"))
			else:
				val = int(string)
				self.lock.acquire()
				ret = c_void_p()
				if s.exist(val,ret) == False:
					s.insert(val)
					if val == number :
						self.conn.sendall(bytes("猜对了","UTF-8"))
						for i in range(len(conn_pool)):
							conn_pool[i].sendall(bytes("游戏结束","UTF-8"))
						sys.exit()
					elif val > number:
						self.conn.sendall(bytes("大了","UTF-8"))
					else :
						self.conn.sendall(bytes("小了","UTF-8"))
				else:
					self.conn.sendall(bytes("重复了","UTF-8"))
				self.lock.release()
		return

def main():
	global int_cmp
	global HOST
	global PORT

	signal.signal(signal.SIGPIPE,signal.SIG_IGN)#忽略半关闭写数据产生的 管道破裂信号
	
	s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
	
	s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,True)
	
	s.bind((HOST,PORT))
	
	s.listen(3)
	
	while True :
	
		conn,addr = s.accept() #阻塞 在这 需要用 select 或者 epoll
	
		print("连接上了:",addr)
	
		conn_pool.append(conn)
	
		t = MyThread(conn)
	
		t.start()

if __name__ == "__main__" :
	main()