from django.db import models
from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin, BaseUserManager


# Create your models here.
class CustomUserManager(BaseUserManager):
    def create_user(self, username, password=None, **extra_fields):
        if not username:
            raise ValueError('The Username field must be set')
        user = self.model(username=username, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, username, password=None, **extra_fields):
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser', True)
        return self.create_user(username, password, **extra_fields)


class Permissions(models.Model):
    permission_name = models.CharField(max_length=255, unique=True)
    permission_value = models.JSONField()


class Role(models.Model):
    role_name = models.CharField(max_length=50, unique=True)
    role_permission = models.ManyToManyField(Permissions, related_name='role_permission')


class User(AbstractBaseUser, PermissionsMixin):
    uuid = models.CharField(max_length=255)
    username = models.CharField(verbose_name="用户名", max_length=20, unique=True)
    real_name = models.CharField(verbose_name="真实姓名", max_length=20, null=True, blank=True)
    create_time = models.DateTimeField(verbose_name="创建时间", auto_now_add=True)
    update_time = models.DateTimeField(verbose_name="更新时间", auto_now=True)
    is_active = models.BooleanField(verbose_name="是否有效", default=True, blank=True, null=True)
    is_staff = models.BooleanField(verbose_name="是否是员工", default=False)
    roles = models.ManyToManyField(Role, related_name='user_roles')
    USERNAME_FIELD = "username"
    objects = CustomUserManager()