"""模块：子服务器数据模型
模拟一个真实子服务器的业务数据结构。"""

from django.db import models


class BusinessUser(models.Model):
    """业务用户——模拟子服务器的本地用户数据"""

    UserID = models.AutoField(primary_key=True, verbose_name='用户ID')
    Username = models.CharField(max_length=64, unique=True, verbose_name='用户名')
    Nickname = models.CharField(max_length=128, default='', verbose_name='昵称')
    OGMMappingID = models.CharField(max_length=128, default='', db_index=True, verbose_name='OGM映射ID')
    JoinTime = models.DateTimeField(auto_now_add=True, verbose_name='加入时间')
    UserStatus = models.SmallIntegerField(default=1, verbose_name='用户状态')

    class Meta:
        db_table = 'sub_business_user'
        verbose_name = '业务用户'
        verbose_name_plural = '业务用户'

    def __str__(self):
        return self.Username


class BusinessOrder(models.Model):
    """业务订单——模拟子服务器的本地订单数据"""

    OrderID = models.AutoField(primary_key=True, verbose_name='订单ID')
    OrderCode = models.CharField(max_length=64, unique=True, db_index=True, verbose_name='订单编号')
    User = models.ForeignKey(
        BusinessUser, on_delete=models.CASCADE, related_name='orders',
        verbose_name='用户',
    )
    Amount = models.DecimalField(max_digits=18, decimal_places=4, verbose_name='金额')
    OrderStatus = models.SmallIntegerField(default=0, verbose_name='订单状态')
    OGMMappingID = models.CharField(max_length=128, default='', db_index=True, verbose_name='OGM映射ID')
    CreateTime = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
    UpdateTime = models.DateTimeField(auto_now=True, verbose_name='更新时间')

    class Meta:
        db_table = 'sub_business_order'
        verbose_name = '业务订单'
        verbose_name_plural = '业务订单'

    def __str__(self):
        return self.OrderCode


class SyncLog(models.Model):
    """同步日志——记录与主服务器 MSYNC 通信的事件"""

    LogID = models.AutoField(primary_key=True, verbose_name='日志ID')
    EventType = models.CharField(max_length=64, verbose_name='事件类型')
    EventDetail = models.JSONField(default=dict, verbose_name='事件详情')
    EventStatus = models.SmallIntegerField(default=1, verbose_name='事件状态')
    CreateTime = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')

    class Meta:
        db_table = 'sub_sync_log'
        verbose_name = '同步日志'
        verbose_name_plural = '同步日志'
        ordering = ['-CreateTime']

    def __str__(self):
        return f'{self.EventType}@{self.CreateTime}'