from Task04_Queue.linkedQueue import LinkedQueue
import threading
import time
class LinkBankQueue(LinkedQueue):
 def __init__(self):
  LinkedQueue.__init__(self)
  self.callNumber = 0
 def getCallNumber(self):
  if self.is_empty() and self.callNumber == 0:
   self.callNumber = 1
  else:
   self.callNumber += 1
  return self.callNumber
 def getLength(self):
  if self.is_empty():
   return 0
  else:
   cur = self._head
   len = 1
   while cur != self._tail:
    cur = cur.next
    len += 1
   return len
# 服務(wù)器
class ServiceWindow(threading.Thread):
 def __init__(self):
  threading.Thread.__init__(self)
  self.bankQueue = None
  self.lock = threading.Lock()
 def service(self):
  self.lock.acquire()
  while True:
   time.sleep(20)
   try:
    if not self.bankQueue.is_empty():
     print('請 %d 號到 %s 號窗口' % (self.bankQueue._head.data, threading.current_thread().name))
     self.bankQueue.dequeue()
     # time.sleep(10)
    else:
     print('隊列為空哦')
   finally:
    self.lock.release()
# 客戶端
if __name__ == '__main__':
 bankQueue = LinkBankQueue()
 windowcount = 2
 serviceWindows = [None] * windowcount
 threadList = [None] * windowcount
 for i in range(windowcount):
  serviceWindows[i] = ServiceWindow()
  serviceWindows[i].bankQueue = bankQueue
  threadList[i] = threading.Thread(name=(i + 1), target=serviceWindows[i].service, args=())
  threadList[i].start()
 while True:
  input('請點擊觸摸屏獲取號碼：')
  callNumber = bankQueue.getCallNumber()
  if bankQueue != None:
   print('您的號碼是：%d，您前面有 %d 位' % (callNumber, bankQueue.getLength()))
   bankQueue.enqueue(callNumber)
  else:
   print('您的號碼是：%d，您前面有 0 位' % (callNumber))