from django.db import models
from django.core.exceptions import ValidationError


def age_validator(value):
    if value < 0:
        raise ValidationError('年龄错误太小了')
    if value > 150:
        raise ValidationError('太老了，还是人吗？')


class BaseUserInfo(models.Model):
    id = models.AutoField(verbose_name='编号', primary_key=True)
    username = models.CharField(verbose_name='用户名', max_length=30)
    password = models.CharField(verbose_name='密码', max_length=20)
    status = models.CharField(verbose_name='状态', max_length=1)
    createdate = models.DateField(verbose_name='创建日期', auto_now_add=True, db_column='createDate')

    def __str__(self):
        return str(self.id) + '-' + self.username

    # class Meta:
    #     managed = False
    #     verbose_name = '人员基本信息'
    #     db_table = 'UserBaseInfo'


class DepartInfo(models.Model):
    id = models.AutoField(verbose_name='部门编号', primary_key=True)
    departname = models.CharField(verbose_name='部门名称', max_length=30)
    createdate = models.DateField(verbose_name='创建日期', db_column='createDate', auto_now_add=True)


class UserExtendInfo(models.Model):
    id = models.AutoField(verbose_name='扩展编号', primary_key=True)
    username = models.CharField(verbose_name='用户名', max_length=30)
    turename = models.CharField(verbose_name='真实姓名', max_length=30)
    sex = models.IntegerField(verbose_name='性别')
    age = models.IntegerField(verbose_name='年龄', validators=[age_validator])
    department = models.CharField(verbose_name='部门', max_length=20)
    salary = models.DecimalField(verbose_name='薪水', max_digits=8, decimal_places=2)
    status = models.CharField(verbose_name='状态', max_length=1, db_comment='1 有效， 0 无效')
    createdate = models.DateField(verbose_name='创建日期', db_column='createDate', auto_now_add=True)
    lastupdatetime = models.DateTimeField(verbose_name='最后更新时间', db_column='lastUpdateTime', auto_now=True)
    memo = models.TextField(verbose_name='备注', blank=True, null=True)
    user = models.OneToOneField(BaseUserInfo, on_delete=models.CASCADE)
    depart = models.ForeignKey(DepartInfo, default="", on_delete=models.DO_NOTHING)


class SkillInfo(models.Model):
    id = models.AutoField(verbose_name='技能编码', primary_key=True)
    skillname = models.CharField(verbose_name='特长', max_length=30)
    createdate = models.DateField(verbose_name='创建时间', db_column='createDate', auto_now_add=True)
    user = models.ManyToManyField(UserExtendInfo, db_table='user_skill')