import requests
from datetime import date
from datetime import timedelta
import json
import getopt
import sys
import time
 
global headers
headers = {
 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:80.0) Gecko/20100101 Firefox/80.0',
 'Host': '',
 
}
 
#登录函数
def login(id, pwd):
 
 l_params = {
 'id': id,
 'pwd': pwd,
 'act': 'login',
 }
 #自己分析得到的接口，下同
 login_url = ''
 s = requests.session()
 re = s.post(url=login_url, headers=headers, params=l_params)
 #返回登录成功的实例
 return s
 
#预约函数
def yd(s, start, end, s_id):
 y_params = {
 "dialogid": "",
 #预定座位
 "dev_id": s_id,
 "room_id":"",
 "type":"dev",
 "prop":"",
 "number":"",
 "classkind":"",
 "test_name":"",
 "start": start,
 "end": end,
 "start_time": "800",
 "end_time": "2200",
 }
 y_url = ''
 re = s.get(url=y_url, headers=headers, params=y_params)
 print(re.text)
 res = json.loads(re.text)
 msg = res['msg']
 if msg == '操作成功！':
 print('success')
 return 1
 elif msg == '2020-09-11只能提前[1]天预约':
 return 0
 else:
 print('fail')
 return 2
 
#脚本输入提示信息
def useage():
 print(
	'''
	Usage:
	 -i 学号（必填）
	 -p 密码
	 -s 座位id
	 -b 开始时间，格式13:00，下同
	 -e 结束时间
	''')
 
if __name__ == '__main__':
 id = pwd = None
 #不填默认抢这个这个时间段的这个座位
 s_id = '100458282'
 begin = '8:00'
 end = '22:00'
 
 #处理输入
 try:
 opts, args = getopt.getopt(sys.argv[1:], 'i:p:s:b:e:')
 for name, value in opts:
  if name == '-i':
  id = value
  if name == '-p':
  pwd = value
  if name == '-s':
  s_id = value
  if name == '-b':
  begin = value
  if name == '-e':
  end = value
 except getopt.GetoptError:
 useage()
 if not id:
 useage()
 sys.exit(3)
 if not pwd:
 pwd = id
 
 #先获取后天时间
 aftertomorrow = date.isoformat(date.today() + timedelta(days=2))
 while True:
 hour = int(time.strftime('%H',time.localtime(time.time())))
 m = int(time.strftime('%M', time.localtime(time.time())))
 #如果现在的明天等与之前的后天，即到了12点，开始抢座
 if date.isoformat(date.today() + timedelta(days=1)) == aftertomorrow:
 
  s = login(id, pwd)
 
  start = aftertomorrow + ' ' + begin
  endtime = aftertomorrow + ' ' + end
  result = yd(s, start, endtime, s_id)
 
  if result == 1:
  #预约成功
  aftertomorrow = date.isoformat(date.today() + timedelta(days=2))
  sleep_time = (23 - hour) * 3600 + (59 - m) * 60 + 35
  print('程序休眠{}s'.format(sleep_time))
  print(aftertomorrow)
  time.sleep(sleep_time)
 
  elif result == 2:
  #被预约，抢下一个id的座位
  s_id = str(int(s_id) - 1)
  continue
  else:
  continue
 else:
  sleep_time = (23 - hour) * 3600 + (59 - m) * 60
  time.sleep(sleep_time)