# Generated by Django 5.2.7 on 2025-10-31 13:36

import django.db.models.deletion
import django.db.models.expressions
import django.db.models.functions.math
import mainapp.models
from django.db import migrations, models


class Migration(migrations.Migration):

    initial = True

    dependencies = [
        ('mainapp', '0001_initial'),
    ]

    operations = [
        migrations.CreateModel(
            name='Transponders',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('name', models.CharField(blank=True, max_length=30, null=True, verbose_name='Название транспондера')),
                ('downlink', models.FloatField(blank=True, null=True, verbose_name='Downlink')),
                ('frequency_range', models.FloatField(blank=True, null=True, verbose_name='Полоса')),
                ('uplink', models.FloatField(blank=True, null=True, verbose_name='Uplink')),
                ('zone_name', models.CharField(blank=True, max_length=255, null=True, verbose_name='Название зоны')),
                ('transfer', models.GeneratedField(db_persist=True, expression=models.ExpressionWrapper(django.db.models.functions.math.Abs(django.db.models.expressions.CombinedExpression(models.F('downlink'), '-', models.F('uplink'))), output_field=models.FloatField()), null=True, output_field=models.FloatField(), verbose_name='Перенос')),
                ('polarization', models.ForeignKey(blank=True, default=mainapp.models.get_default_polarization, null=True, on_delete=django.db.models.deletion.SET_DEFAULT, related_name='tran_polarizations', to='mainapp.polarization', verbose_name='Поляризация')),
                ('sat_id', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='tran_satellite', to='mainapp.satellite', verbose_name='Спутник')),
            ],
            options={
                'verbose_name': 'Транспондер',
                'verbose_name_plural': 'Транспондеры',
            },
        ),
    ]