# Generated by Django 5.2.15 on 2026-07-27 02:44

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


class Migration(migrations.Migration):

    initial = True

    dependencies = [
        ('tickets', '0008_ticketmessagetimelineitem'),
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='WorkItem',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('public_id', models.UUIDField(default=uuid.uuid4, editable=False, unique=True)),
                ('task_type', models.CharField(choices=[('ticket_missing_info', '工单信息待补全')], max_length=64)),
                ('status', models.CharField(choices=[('active', '待处理'), ('completed', '已完成'), ('cancelled', '已取消')], default='active', max_length=24)),
                ('object_type', models.CharField(max_length=64)),
                ('object_id', models.CharField(max_length=80)),
                ('title', models.CharField(max_length=200)),
                ('description', models.TextField(blank=True)),
                ('payload', models.JSONField(blank=True, default=dict)),
                ('completed_at', models.DateTimeField(blank=True, null=True)),
                ('created_at', models.DateTimeField(auto_now_add=True)),
                ('updated_at', models.DateTimeField(auto_now=True)),
                ('assignee', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='assigned_work_items', to=settings.AUTH_USER_MODEL)),
                ('completed_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='completed_work_items', to=settings.AUTH_USER_MODEL)),
                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='created_work_items', to=settings.AUTH_USER_MODEL)),
                ('ticket', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='work_items', to='tickets.ticket')),
            ],
            options={
                'ordering': ['-created_at'],
                'indexes': [models.Index(fields=['status', 'task_type', 'created_at'], name='workitems_w_status_86e375_idx'), models.Index(fields=['object_type', 'object_id'], name='workitems_w_object__e6cbdc_idx'), models.Index(fields=['assignee', 'status', 'created_at'], name='workitems_w_assigne_930002_idx')],
                'constraints': [models.UniqueConstraint(condition=models.Q(('status', 'active')), fields=('task_type', 'object_type', 'object_id'), name='unique_active_work_item_target')],
            },
        ),
    ]