import json

filename = "users.json"
with open(filename, "r+", encoding='utf8') as file:
    '''opens json file and separates it by line by storing each line into an
    array'''
    lines = file.readlines()

login_info = {}
'''array that will store usernames and passwords for each user(each line in
the file is a user)'''

for line in lines:
    '''simply prints each element of the lines array displaying the
    information of each user'''
    info = json.loads(line)
    print("USER: " + str(info))
    print("username: " + info["username"])
    print("password: " + info["password"] + "n")
    login_info[info["username"]] = info["password"]
    '''creates a new pair of username and password for each user(each line is
    a user)'''
    print(login_info)


print(lines)
print(login_info)

'''prompts user for their username and password'''
prompt_username = input("Please enter username: ")
prompt_password = input("Please input password: ")

def login(username, password):
    '''if username exists and the inputed strings match one of the key-value
    pairs, login is successful'''

    if username in login_info:
        if password == info["password"]:
            print("LOGIN SUCCESSFUL")
        else:
            print("Sorry, password does not exist.")
    else:
        print("Sorry this username or password does not exist.")

login(prompt_username, prompt_password)