# Generated by Django 5.2.7 on 2025-11-04 07:53

import django.db.models.deletion
from django.db import migrations, models


class Migration(migrations.Migration):

    dependencies = [
        ('basic_info', '0017_product_image'),
        ('stock', '0027_alter_inventory_num_of_rolls_and_more'),
    ]

    operations = [
        migrations.CreateModel(
            name='StockSnapshot',
            fields=[
                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='创建时间')),
                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='更新时间')),
                ('id', models.BigAutoField(primary_key=True, serialize=False)),
                ('delta', models.IntegerField(verbose_name='库存数量')),
                ('quantity_before', models.IntegerField(verbose_name='变动前库存数量')),
                ('quantity_after', models.IntegerField(verbose_name='变动后库存数量')),
                ('unit', models.IntegerField(choices=[(1, '米'), (2, '码'), (3, '公斤')], verbose_name='单位')),
                ('num_of_rolls', models.IntegerField(default=1, verbose_name='匹数')),
                ('offset_to', models.BigIntegerField(blank=True, null=True, verbose_name='冲抵目标ID')),
                ('offset_at', models.DateTimeField(blank=True, null=True, verbose_name='冲抵时间')),
                ('cancelled', models.BooleanField(default=False, verbose_name='已取消')),
                ('cancelled_at', models.DateTimeField(blank=True, null=True, verbose_name='取消时间')),
                ('offset_id', models.BigIntegerField(blank=True, null=True, verbose_name='冲抵记录ID')),
                ('product', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='stock_snapshots', to='basic_info.product', verbose_name='产品')),
                ('stock_change_record', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='stock_snapshots', to='stock.stockchangerecord', verbose_name='关联的库存变动记录')),
                ('warehouse', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='stock_snapshots', to='basic_info.warehouse', verbose_name='仓库')),
            ],
            options={
                'verbose_name': '库存快照',
                'verbose_name_plural': '库存快照',
            },
        ),
    ]