num_count =None
account=0
True_False=False
all_accounts=[
    {
        "username":"viktor",
        "password":"123123",
        "date of bird":"02.10.2020",
        "male or female":"male",
        "country":"Bulgaria",
        "interests":[["obicham zelenchuci"]],
        "messege":[["meh"],["stava"]],
        "send by":[["viktor"],["viktor02"]],
        },
        {
        "username":"viki",
        "password":"12312",
        "date of bird":"02.10.2020",
        "male or female":"male",
        "country":"Bulgaria",
        "interests":[["obicham zelenchuci"]],
        "messege":[["meh"],["stava"]],
        "send by":[["viktor"],["viktor02"]],
        }

    ]

def register(all_accounts):
    new_account={}
    user_name = input("username :")
    password =input("password :")
    date_of_birth = input("date of birth :")
    male_or_female = input("male or female :")
    country=input("country :")
    interests=input("interests :")
    new_account={
        "username" : user_name ,
        "password" : password ,
        "date of bird" : date_of_birth,
        "male or female" : male_or_female,
        "country":country,
        "interests":interests,
        "messege":None,
        "send by":None
         }
    all_accounts.append(new_account)


def log_in(all_accounts,True_False,account):
    num_count=0
    username=input("username ? ")
    password=input("password ? ")
    for users in range(len(all_accounts)):
        if username == all_accounts[num_count]["username"] and password == all_accounts[num_count]["password"]:
            True_False=True


            while  True_False:
                answer=input("change , quit or message ? ")
                logged_in(all_accounts,account,answer)
                if answer =="quit":
                    break
        num_count+=1
    account = num_count-1

    if True_False==False:
        print("invailid password or username !!")




def logged_in(all_accounts,account,answer):
    if answer == "message":
        question = input("see messages or send a message ")
        if question == "see messages":
            curr_user=0
            curr_mess=0
            for row in range(len(all_accounts[account]["send by"])):
                print(all_accounts[account]["send by"][curr_user][0],":",all_accounts[account]["messege"][curr_mess][0])
                curr_user+=1
                curr_mess+=1
        if question =="send message":
            user=0
            for row in range(len(all_accounts)):
                if all_accounts[user]["username"] == all_accounts[account]["username"]:
                    user+=1
                else:
                    print(all_accounts[user]["username"])

                    user+=1
            chose_user=input("Which do you want to send a message ")
            send_message = 0
            for row in range(len(all_accounts)):
                if chose_user==all_accounts[send_message]["username"]:
                    message_send=input("message:")
                    all_accounts[send_message]["messege"].append([message_send])
                    all_accounts[send_message]["send by"].append([all_accounts[account]["username"]])
                send_message+=1
            else:
                print("there is no such user")



    if answer=="change":
        answer_2 = input("what you need to change ? ")
        if answer_2=="password":
            curr_password=input("currect password :")
            conf_curr_password=input("confirmet currect password :")
            if curr_password == all_accounts[num_count-1]["password"] and conf_curr_password == all_accounts[num_count-1]["password"]:
                new_password=input("New password :")
                all_accounts[account]["password"]=new_password
        if answer_2 =="interests":
            change_interests(all_accounts,account)


def change_interests(all_accounts,account):

    print(all_accounts[account]["interests"])
    answer=input("add or remove interests ? ")
    if answer == "add":
        new_interests=input("New interests :")
        count_1=0
        for row in range(len(all_accounts[account]["interests"])):
            if new_interests == all_accounts[account]["interests"][count_1]:
                print("this interest already have it")
                break
            count_1+=1
        else:
            all_accounts[account]["interests"].append([new_interests])
    if answer == "remove" and len(all_accounts[account]["interests"])==0:
        print ("no interest to remove")

    elif answer == "remove":
        remove_interests=int(input("interest which you want to remove "))
        all_accounts[account]["interests"].remove(all_accounts[account]["interests"][remove_interests-1])
        print(all_accounts[0]["interests"])



while True:
    answer = input ("login or register ? ")
    if answer == "register":
        register(all_accounts)
    if answer == "login":
        log_in(all_accounts,True_False,account)