import traceback

import account.models
from .api_utils import *
from .models import *
from django.core.exceptions import ValidationError


def _reqire_access_token(params):
    token = api_get_param_str(params, "access_token")
    return UserToken.get_user_by_token(token)


def make_response(response):
    return {"response": response}


def account_auth(params):
    login = api_get_param_str(params, "login")
    password = api_get_param_str(params, "password")
    user = UserToken.auth(login, password)
    token = UserToken.create_token(user)

    return make_response({"access_token": token.access_token})


def account_register(params):
    name = api_get_param_str(params, "name")
    surname = api_get_param_str(params, "surname")
    phone = api_get_param_str(params, "phone")
    email = api_get_param_str(params, "email")
    password = api_get_param_str(params, "password")

    user = account.models.SiteUser(
        name=name,
        surname=surname,
        phone=phone,
        email=email,
        password=password
    )

    try:
        user.full_clean()
        user.save()

        try:
            token = UserToken.create_token(user)
            return make_response({"access_token": token.access_token})

        except Exception as ex:
            # если вдруг токен нельзя создать
            user.delete()
            raise ex

    except ValidationError as e:
        traceback.print_exc()
        raise Exception(API_ERROR_USER_REGISTER, e.messages)


def account_get(params):
    user = _reqire_access_token(params)
    return make_response({"name": user.name, "surname": user.surname, "email": user.email, "phone": user.phone})


def __make_argument_doc(name, arg_type, description, required=True):
    return {
        "name": name,
        "type": arg_type,
        "description": description,
        "required": required
    }


def __make_argument_access_token():
    return __make_argument_doc("access_token", "string", "<i>Токен</i>, выданный методом <code>account.auth</code>")


__doc_type_string = "string"


api_methods = {
    "account.auth": {
        "func": account_auth,
        "doc": "Аутентификация пользователя",
        "params": [
            __make_argument_doc("login", __doc_type_string, "Логин пользователя"),
            __make_argument_doc("password", __doc_type_string, "Пароль пользователя"),
        ],
        "returns": "В случае правильных логина и пароля <code>access_token</code>. В противном случае объект ошибки."
    },
    "account.register": {
        "func": account_register,
        "doc": "Регистрация нового пользователя",
        "params": [

        ],
        "returns": "Поля пользователя (name, surname, email, phone)."
    },

    "account.get": {
        "func": account_get,
        "doc": "Получение информации о пользователе",
        "params": [
            __make_argument_access_token()
        ],
        "returns": "Поля пользователя (name, surname, email, phone)."
    },
}