# Generated 2026-05-04 — FRREP-MCL012 (CollectionSlugAlias for rename / merge URL survival)

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


class Migration(migrations.Migration):

    dependencies = [
        ("repository_documents", "0003_collection_group_access"),
    ]

    operations = [
        migrations.CreateModel(
            name="CollectionSlugAlias",
            fields=[
                (
                    "id",
                    models.BigAutoField(
                        auto_created=True,
                        primary_key=True,
                        serialize=False,
                        verbose_name="ID",
                    ),
                ),
                (
                    "old_slug",
                    models.SlugField(
                        db_index=True, max_length=120, unique=True
                    ),
                ),
                (
                    "note",
                    models.CharField(
                        blank=True,
                        help_text="Reason the alias was created — e.g. 'merged from theses-old' or 'renamed 2026-05-04'.",
                        max_length=255,
                    ),
                ),
                ("created_at", models.DateTimeField(auto_now_add=True)),
                (
                    "collection",
                    models.ForeignKey(
                        on_delete=django.db.models.deletion.CASCADE,
                        related_name="slug_aliases",
                        to="repository_documents.collection",
                    ),
                ),
            ],
            options={
                "verbose_name": "Collection slug alias",
                "verbose_name_plural": "Collection slug aliases",
                "ordering": ["-created_at"],
            },
        ),
    ]