# -*- coding: utf-8 -*-
from django.db import models
from django.conf import settings
from django.core.validators import RegexValidator, MinLengthValidator
from django.utils import timezone
from django.utils.http import urlquote
from django.utils.translation import ugettext_lazy as _
from django.core.mail import send_mail
from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin

from myauth import managers


class DokUser(AbstractBaseUser, PermissionsMixin):
    """
    (не)Самопальная модель пользователя - содрано у caktusgroup.com,
    также проблемы с добавлением юзера в админке решены при помощи
    stackoverflow, да хранит гугл имя его.
    """
    username = models.CharField(_('first name'), max_length=30, blank=True, unique=True)
    email = models.EmailField(_('email address'), max_length=254, unique=True)
    first_name = models.CharField(_('first name'), max_length=30, blank=True)
    last_name = models.CharField(_('last name'), max_length=30, blank=True)
    is_staff = models.BooleanField(_('staff status'), default=False,
                                   help_text=_(
                                       'Designates whether the user can log into this admin '
                                       'site.'))
    is_active = models.BooleanField(_('active'), default=True,
                                    help_text=_(
                                        'Designates whether this user should be treated as '
                                        'active. Unselect this instead of deleting accounts.'))
    date_joined = models.DateTimeField(_('date joined'), default=timezone.now)
    profile = models.ForeignKey('customer.UserProfile', null=True, related_name='users')

    objects = managers.CustomUserManager()

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email']

    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')

    def get_absolute_url(self):
        return f"/users/{urlquote(self.email)}/"

    def get_full_name(self):
        """
        Returns the first_name plus the last_name, with a space in between.
        """
        full_name = f'{self.first_name} {self.last_name}'
        return full_name.strip()

    def get_short_name(self):
        """
        Returns the short name for the user.
        """
        return self.first_name

    def email_user(self, subject, message, from_email=None):
        """
        Sends an email to this User.
        """
        send_mail(subject, message, from_email, [self.email])


class ConfirmEmail(models.Model):
    """
    Подтверждение Email.
    """
    user = models.OneToOneField(settings.AUTH_USER_MODEL, related_name='confirm_email',
                                primary_key=True)
    is_confirmed = models.BooleanField(u'email подтвержден?', default=False)

    created_at = models.DateTimeField(u'Создан', auto_now_add=True)
    updated_at = models.DateTimeField(u'Изменен', auto_now=True)

    objects = managers.ConfirmEmailManager()

    class Meta:
        verbose_name = u'подтверждение email'
        verbose_name_plural = u'запросы подтверждения email'
        ordering = ['-created_at', ]

    def __str__(self):
        status = u'не подтвержден'
        if self.is_confirmed:
            status = u'подтвержден'
        return f'{self.user.email}, email {status}'


class ResetKey(models.Model):
    """Ключ на восстановление пароля."""
    user = models.OneToOneField(
        settings.AUTH_USER_MODEL,
        related_name='restore_key',
        primary_key=True
    )

    key = models.CharField(
        u'Ключ доступа',
        max_length=40,
        db_index=True,
        validators=[
            RegexValidator(
                regex='[0-9a-f]{40}',
                message='Введите значение длиной 40 символов, состоящее из цифр 0-9 и букв a-f.'
            ),
            MinLengthValidator(40),
        ]
    )

    created_at = models.DateTimeField('создан', auto_now_add=True)
    updated_at = models.DateTimeField('изменен', auto_now=True)

    objects = managers.ResetKeyManager()

    class Meta:
        verbose_name = 'ключ восстановления пароля'
        verbose_name_plural = 'ключи восстановления паролей'
        ordering = ['-created_at', ]

    def __str__(self):
        return f'{self.user.email}, {self.key}'