from django.db import migrations


def copy_gonggao_to_other_pages(apps, schema_editor):
    """将 order_pool 公告复制到 accept_order / merchant_home（仅当目标页尚无记录）。"""
    Gonggao = apps.get_model('config', 'Gonggao')
    for pk in ('accept_order', 'merchant_home'):
        for row in Gonggao.objects.filter(page_key='order_pool'):
            if Gonggao.objects.filter(club_id=row.club_id, page_key=pk).exists():
                continue
            Gonggao.objects.create(
                club_id=row.club_id,
                page_key=pk,
                NoticeType=row.NoticeType,
                Content=row.Content or '',
            )


class Migration(migrations.Migration):

    dependencies = [
        ('config', '0008_gonggao_page_key'),
    ]

    operations = [
        migrations.RunPython(copy_gonggao_to_other_pages, migrations.RunPython.noop),
    ]
