from django.contrib.auth.base_user import AbstractBaseUser
from django.contrib.auth.models import PermissionsMixin
from django.db import models

from .managers import UserManager


class User(AbstractBaseUser, PermissionsMixin):
    email = models.EmailField('E-mail', unique=True)

    first_name = models.CharField('First name', max_length=30, blank=True)
    last_name = models.CharField('Last name', max_length=30, blank=True)

    date_joined = models.DateTimeField('date joined', auto_now_add=True)

    is_active = models.BooleanField('User active?', default=True)
    is_staff = models.BooleanField('Staff?', default=True)
    is_superuser = models.BooleanField('Superuser?', default=False)

    objects = UserManager()

    USERNAME_FIELD = 'email'

    class Meta:
        ordering = ['first_name', 'last_name']
        verbose_name = 'User'
        verbose_name_plural = 'Users'
        db_table = 'users'

    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 or 'Unamed'