import csv
import time
student_infos = []

def load_stu_info():
  """
  加載學(xué)生信息
  從stu_infos.csv文件中加載數(shù)據(jù)
  :return: 無
  """
  with open(r"stu_infos.csv", encoding='utf-8-sig') as file:
    f_csv = csv.reader(file)
    header = next(f_csv)
    for row in f_csv:
      student_info = {}
      for index in range(3):
        student_info[header[index]] = row[index]
      student_infos.append(student_info)

def login():
  """
  用戶使用學(xué)號(hào)和密碼進(jìn)行登錄
  最多讓用戶登錄三次，如果連續(xù)三次都登錄失?。ㄓ脩裘蛘呙艽a錯(cuò)誤），只要密碼和用戶都正確表示登錄成功
  :return:登錄成功返回True和學(xué)號(hào)，三次都登錄失敗返回False和None
  """
  retry_time = 0
  while retry_time < 3:
    user_no = input('請(qǐng)輸入登錄賬號(hào)：')
    password = input('請(qǐng)輸入密碼：')
    for i in student_infos:
      if i['no']==user_no and i['password']==password:
        return True,user_no
    print('用戶名或者密碼錯(cuò)誤?。?！請(qǐng)重新輸入。')
    retry_time += 1
  else:
    return False, None

def add(user_no):
  for x in student_infos:
    if user_no==x['no']:
      name=x['name']
      break
  times=time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
  choices=['出勤','遲到','請(qǐng)假','缺勤']
  a=int(input("\t該學(xué)生出勤情況：1-出勤\t2-遲到\t3-請(qǐng)假\t4-缺勤:"))
  if a==1:
    data=choices[0]
  elif a==2:
    data=choices[1]
  elif a==3:
    data=choices[2]
  else:
    data=choices[3]
  with open(r"attendance.csv",'a+',newline='', encoding='utf-8') as f:
    wf = csv.writer(f)
    wf.writerow([user_no,name,times,data])#寫入一行數(shù)據(jù)
    print("{}同學(xué){}數(shù)據(jù)已經(jīng)寫入成功！操作時(shí)間是{}".format(name,data,times))

def select():
  student = []
  with open(r"attendance.csv", encoding='utf-8-sig') as file:
    f_csv = csv.reader(file)
    header = next(f_csv)
    for row in f_csv:
      students = {}
      for index in range(4):
        students[header[index]] = row[index]
      student.append(students)
    name=input("請(qǐng)輸入你需要查找的姓名：")
    print(" 學(xué)號(hào)\t\t姓名\t\t操作時(shí)間\t\t出勤狀態(tài)")
    for a in student:
      if a['name']==name:
        print(a['no']+'\t'+a['name']+'\t'+a['time']+'\t\t'+a['state'])
      else:
        print("無此人！?。?)
        break