# Generated by Django 5.2.4 on 2026-07-17 10:53

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


def backfill_procurement_activity(apps, schema_editor):
    ProcurementRequest = apps.get_model("procurement", "ProcurementRequest")
    Activity = apps.get_model("procurement", "ProcurementRequestActivity")

    activities = []
    activity_times = []
    for procurement_request in ProcurementRequest.objects.iterator(chunk_size=500):
        entries = [
            (
                "created",
                procurement_request.created_at,
                procurement_request.requestor_id,
            ),
            (
                "submitted",
                procurement_request.submitted_at,
                procurement_request.requestor_id,
            ),
            (
                "started",
                procurement_request.started_at,
                procurement_request.executor_id,
            ),
            (
                "completed",
                procurement_request.completed_at,
                procurement_request.executor_id,
            ),
        ]
        for action, created_at, actor_id in entries:
            if created_at is None:
                continue
            activities.append(
                Activity(
                    request_id=procurement_request.pk,
                    actor_id=actor_id,
                    action=action,
                    object_kind="request",
                    object_id=procurement_request.pk,
                    metadata={"backfilled": True},
                )
            )
            activity_times.append(created_at)

    if not activities:
        return
    Activity.objects.bulk_create(activities, batch_size=500)
    for activity, created_at in zip(activities, activity_times):
        activity.created_at = created_at
    Activity.objects.bulk_update(activities, ["created_at"], batch_size=500)


class Migration(migrations.Migration):

    dependencies = [
        ('procurement', '0015_procurementitemattachment'),
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='ProcurementRequestActivity',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('action', models.CharField(choices=[('created', 'Создал заявку'), ('updated', 'Изменил заявку'), ('submitted', 'Отправил на согласование'), ('stage_approved', 'Согласовал этап'), ('stage_rejected', 'Отклонил этап согласования'), ('approved', 'Заявка согласована'), ('started', 'Взял заявку в работу'), ('executor_reassigned', 'Сменил исполнителя'), ('completed', 'Завершил заявку'), ('rejected', 'Отклонил заявку'), ('cancelled', 'Отменил заявку'), ('item_updated', 'Изменил исполнение позиции'), ('all_items_received', 'Отметил все позиции полученными'), ('attachment_added', 'Добавил файл'), ('attachment_removed', 'Удалил файл'), ('comment_added', 'Добавил комментарий'), ('comment_removed', 'Удалил комментарий'), ('arrival_notified', 'Уведомил о поступлении')], max_length=32, verbose_name='Действие')),
                ('object_kind', models.CharField(blank=True, choices=[('request', 'Заявка'), ('approval', 'Согласование'), ('item', 'Позиция'), ('attachment', 'Файл'), ('comment', 'Комментарий')], max_length=32, verbose_name='Тип объекта')),
                ('object_id', models.PositiveBigIntegerField(blank=True, null=True, verbose_name='ID объекта')),
                ('metadata', models.JSONField(blank=True, default=dict, verbose_name='Метаданные')),
                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Создано')),
                ('actor', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='procurement_activities', to=settings.AUTH_USER_MODEL, verbose_name='Инициатор')),
                ('request', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='activities', to='procurement.procurementrequest', verbose_name='Заявка')),
            ],
            options={
                'verbose_name': 'История заявки на закупку',
                'verbose_name_plural': 'История заявок на закупку',
                'ordering': ['-created_at', '-id'],
                'indexes': [models.Index(fields=['request', '-created_at'], name='procurement_request_4b22f4_idx')],
            },
        ),
        migrations.RunPython(
            backfill_procurement_activity,
            reverse_code=migrations.RunPython.noop,
        ),
    ]