# Generated by Django 5.0.7 on 2024-08-05 20:43

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


class Migration(migrations.Migration):
    initial = True

    dependencies = [
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name="Resource",
            fields=[
                (
                    "id",
                    models.BigAutoField(
                        auto_created=True,
                        primary_key=True,
                        serialize=False,
                        verbose_name="ID",
                    ),
                ),
                ("name", models.CharField(max_length=256)),
                ("min_length", models.DurationField()),
                ("max_length", models.DurationField()),
                ("google_calendar", models.CharField(max_length=1024, unique=True)),
                (
                    "parent",
                    models.ForeignKey(
                        blank=True,
                        null=True,
                        on_delete=django.db.models.deletion.CASCADE,
                        related_name="children",
                        to="reservations.resource",
                    ),
                ),
            ],
        ),
        migrations.CreateModel(
            name="Reservation",
            fields=[
                (
                    "id",
                    models.BigAutoField(
                        auto_created=True,
                        primary_key=True,
                        serialize=False,
                        verbose_name="ID",
                    ),
                ),
                ("start", models.DateTimeField()),
                ("end", models.DateTimeField()),
                (
                    "google_calendar_event_id",
                    models.CharField(
                        blank=True, max_length=1024, null=True, unique=True
                    ),
                ),
                (
                    "duration",
                    models.GeneratedField(
                        db_persist=True,
                        expression=django.db.models.expressions.CombinedExpression(
                            models.F("end"), "-", models.F("start")
                        ),
                        output_field=models.DurationField(),
                    ),
                ),
                (
                    "resources",
                    models.ManyToManyField(blank=True, to="reservations.resource"),
                ),
            ],
        ),
        migrations.AddConstraint(
            model_name="reservation",
            constraint=models.CheckConstraint(
                check=models.Q(("end__gt", models.F("start"))), name="end_after_start"
            ),
        ),
        migrations.CreateModel(
            name="UserReservation",
            fields=[
                (
                    "reservation_ptr",
                    models.OneToOneField(
                        auto_created=True,
                        on_delete=django.db.models.deletion.CASCADE,
                        parent_link=True,
                        primary_key=True,
                        serialize=False,
                        to="reservations.reservation",
                    ),
                ),
                (
                    "user",
                    models.ForeignKey(
                        blank=True,
                        null=True,
                        on_delete=django.db.models.deletion.CASCADE,
                        to=settings.AUTH_USER_MODEL,
                    ),
                ),
            ],
            bases=("reservations.reservation",),
        ),
    ]