import json
print ('1.Login')
print ('2.Register')
print('3.Exit')

def disp():
    while True:

        check = int(input('enter your choice 1/2/3:'))

        if check == 1:
            Login()
        elif check == 2:
            Register()
        elif check == 3:
            print('You are successfully exit!')
            break

print('*'*50)

def Register():


    username = input('create username:')
    userid = input('create userid:')
    password = input('enter you password:')
    users = {}

    users[userid] = []
    users[userid].append({
            'username': username,
            'userid': userid,
            'password': password
             })
    with open('users1.txt') as json_file:
        user = json.load(json_file)
        user.update(users)

        with open('users1.txt', 'w') as outfile:
            json.dump(user, outfile)
            print('user created')
            print('*' * 50)




def Login():

    username = input('enter user login name:')

    userid = input('create userid:')
    password = input('enter password:')
    try:
        with open('users1.txt') as json_file:
            users = json.load(json_file)
            for p in users[userid]:
                a = p['username']
                b = p['userid']
                c = p['password']

            if a and b and c == username and password and userid:
                print('login successfully')

                print('1.Add user')
                print('2. List of users')
                print('3. Logout')

    except KeyError:
            print("login failed! please provide correct username and password")
            print ('1.Login')
            print ('2.Register')
            print('3.Exit')

            disp()

    while True:
        chk = int(input('enter your choice 1/2/3:'))

        if chk == 1:
            after_login()
        elif chk == 2:
            list_of_users()
        elif chk == 3:
            print('You are successfully exit!')
            exit()

        print('*' * 50)


def after_login():
        d = {}
        Userlogin = input('create username:')
        Userid = input('create userid:')
        Userpassword = input('enter you password:')
        d['details'] = []
        d['details'].append({
                'Userlogin': Userlogin,
                'Userid': Userid,
                'Userpassword': Userpassword
            })


        with open('users2.txt', 'w') as outfile:
            json.dump(d, outfile)
            print('user profile created')
            print('*' * 50)

def list_of_users():
    with open('users2.txt') as json_file:
        d = json.load(json_file)
        for p in d['details']:
            print('Userlogin: ' + p['Userlogin'])
            print('Userid: ' + p['Userid'])
            print('Userpassword: ' + p['Userpassword'])






disp()