# Generated by Django 6.1 on 2026-10-19 15:02
# The books' files move out of their rows into a table of their own (docs/database.md):
# copied in one statement, then the two columns are dropped (ALTER TABLE DROP COLUMN).

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


class Migration(migrations.Migration):

    dependencies = [
        ('books', '0007_list_indexes'),
    ]

    operations = [
        migrations.CreateModel(
            name='EBookFile',
            fields=[
                ('book', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, primary_key=True, related_name='file', serialize=False, to='books.ebook')),
                ('data_ct', models.TextField()),
                ('data_iv', models.CharField(max_length=32)),
            ],
        ),
        migrations.RunSQL(
            'INSERT INTO books_ebookfile (book_id, data_ct, data_iv) SELECT id, data_ct, data_iv FROM books_ebook',
            reverse_sql='UPDATE books_ebook SET '
                        'data_ct = (SELECT f.data_ct FROM books_ebookfile f WHERE f.book_id = books_ebook.id), '
                        'data_iv = (SELECT f.data_iv FROM books_ebookfile f WHERE f.book_id = books_ebook.id)',
        ),
        migrations.RemoveField(
            model_name='ebook',
            name='data_ct',
        ),
        migrations.RemoveField(
            model_name='ebook',
            name='data_iv',
        ),
    ]