# -*- coding: utf-8 -*-
""" User models."""
from django.contrib.auth.models import (
    AbstractBaseUser, BaseUserManager, PermissionsMixin)
from django.core.mail import send_mail
from django.db import models
from django.utils import timezone
from django.utils.translation import ugettext_lazy as _
from django.conf import settings

from custom_user.utils import hide_email

class EmailUserManager(BaseUserManager):

    """ Custom manager for EmailUser."""

    def _create_user(self, email, password,
                     is_staff, is_superuser, **extra_fields):
        """ Create and save an EmailUser with the given email and password.

        :param str email: user email
        :param str password: user password
        :param bool is_staff: whether user staff or not
        :param bool is_superuser: whether user admin or not
        :return custom_user.models.EmailUser user: user
        :raise ValueError: email is not set

        """
        now = timezone.now()
        # if not email:
        #     raise ValueError('The given email must be set')

        # For socials have to equal email(if emply seted) None

        if email:
            email = self.normalize_email(email)
        else:
            email = None

        is_active = extra_fields.pop("is_active", True)
        user = self.model(email=email, is_staff=is_staff, is_active=is_active,
                          is_superuser=is_superuser, last_login=now,
                          date_joined=now, **extra_fields)

        if password:
            user.set_password(password)

        user.save(using=self._db)
        return user

    def create_user(self, email, password=None, **extra_fields):
        """ Create and save an EmailUser with the given email and password.

        :param str email: user email
        :param str password: user password
        :return custom_user.models.EmailUser user: regular user

        """
        is_staff = extra_fields.pop("is_staff", False)
        return self._create_user(email, password, is_staff, False,
                                 **extra_fields)

    def create_superuser(self, email, password, **extra_fields):
        """ Create and save an EmailUser with the given email and password.

        :param str email: user email
        :param str password: user password
        :return custom_user.models.EmailUser user: admin user

        """
        return self._create_user(email, password, True, True,
                                 **extra_fields)


class AbstractEmailUser(AbstractBaseUser, PermissionsMixin):

    """ Abstract User with the same behaviour as Django's default User.

    AbstractEmailUser does not have username field. Uses email as the
    USERNAME_FIELD for authentication.

    Use this if you need to extend EmailUser.

    Inherits from both the AbstractBaseUser and PermissionMixin.

    The following attributes are inherited from the superclasses:
        * password
        * last_login
        * is_superuser

    """

    email = models.EmailField(_('email address'), max_length=255,
                              unique=True, db_index=True, null=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)

    objects = EmailUserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

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

    def get_full_name(self):
        """ Return the email."""
        return self.email

    def get_short_name(self):
        """ Return the email."""
        return self.email

    def email_user(self, subject, message, **kwargs):
        """ Send an email to this User."""
        send_mail(subject, message, getattr(settings, 'EMAIL_HOST_USER'), [self.email], **kwargs)


class EmailUser(AbstractEmailUser):

    """
    Expand Custom Email user abstraction

    """

    GENDER_LIST = (
        ('male', _('Male')),
        ('female', _('Female')),
    )

    username = models.CharField(_('User name from socials'), max_length=256, blank=True, null=True)
    first_name = models.CharField(_('First Name'), max_length=256, blank=True, null=True)
    last_name = models.CharField(_('Last Name'), max_length=256, blank=True, null=True)

    gender = models.CharField(_('Gender'), max_length=10, choices=GENDER_LIST, null=True, blank=True)
    birthdate = models.DateField(_('Birthdate'), null=True, blank=True)
    # joined = models.DateTimeField(_('Last Name'), default=timezone.now)

    avatar = models.ImageField(_('Avatar'), upload_to='profiles', blank=True, null=True)

    def get_full_name(self):
        name_list = []
        if self.first_name:
            name_list.append(self.first_name)
        if self.last_name:
            name_list.append(self.last_name)

        if not name_list:
            return self.email or self.username

        else:
            return ' '.join(name_list)

    def get_hidden_name(self):
        return hide_email(self.get_full_name())

    def in_group(self, group_name):
        return group_name in self.groups.all().values_list('name', flat=True)

    def in_copyright_group(self):
        return self.in_group('copyright')

    def __unicode__(self):
        return self.get_full_name()

    class Meta(AbstractEmailUser.Meta):
        swappable = 'AUTH_USER_MODEL'