from django.contrib.auth.models import AbstractUser
from django.db import models


class User(AbstractUser):
    """扩展用户模型"""
    phone = models.CharField('手机号码', max_length=11, blank=True, null=True)
    department = models.CharField('部门', max_length=100, blank=True, null=True)
    position = models.CharField('职位', max_length=100, blank=True, null=True)
    # 暂时移除头像字段，避免Pillow依赖
    # avatar = models.ImageField('头像', upload_to='avatars/', blank=True, null=True)
    created_at = models.DateTimeField('创建时间', auto_now_add=True)
    updated_at = models.DateTimeField('更新时间', auto_now=True)
    
    # 解决反向访问器冲突
    groups = models.ManyToManyField(
        'auth.Group',
        verbose_name='groups',
        blank=True,
        help_text='The groups this user belongs to.',
        related_name="custom_user_set",
        related_query_name="custom_user",
    )
    user_permissions = models.ManyToManyField(
        'auth.Permission',
        verbose_name='user permissions',
        blank=True,
        help_text='Specific permissions for this user.',
        related_name="custom_user_set",
        related_query_name="custom_user",
    )
    
    class Meta:
        verbose_name = '用户'
        verbose_name_plural = verbose_name
        db_table = 'auth_user_custom'
    
    def __str__(self):
        return f'{self.username} - {self.first_name or self.username}'