# Generated by Django 3.2.15 on 2022-10-01 09:28

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

log = getLogger(__name__)

def prirad_deadliny(apps, schema_editor):
    Hodnoceni = apps.get_model('seminar', 'Hodnoceni')
    Deadline = apps.get_model('seminar', 'Deadline')

    for h in Hodnoceni.objects.all():
        p = h.problem

        try:
            t = p.tema
            d = Deadline.objects.filter(cislo__rocnik=t.rocnik, deadline__gte=h.reseni.cas_doruceni).first()

            if d is None:
                d = Deadline.objects.filter(cislo__rocnik=t.rocnik).last()

            if d is not None:
                h.deadline_body = d
                h.save()
                continue

        except Exception:
            pass


        cislo = None

        try:
            u = p.uloha
            cislo = u.cislo_zadani
        except Exception:
            pass

        try:
            c = p.clanek
            if c.cislo is not None:
                cislo = c.cislo
        except Exception:
            pass

        if cislo is None:
            cislo = h.cislo_body

        if cislo is not None:
            d = Deadline.objects.filter(cislo=cislo, deadline__gte=h.reseni.cas_doruceni).first()
            if d is None:
                d = Deadline.objects.filter(cislo=cislo).last()
            if d is not None:
                h.deadline_body = d
                h.save()
                continue

        log.warning(f"Deadline hodnocení {h.id} se nepodařil určit exaktnějším způsobem. Zkouším další.")

        d = Deadline.objects.filter(deadline__gte=h.reseni.cas_doruceni).first()
        h.deadline_body = d
        h.save()

        if h.cislo_body and (int(h.deadline_body.cislo.poradi[0]) + 2 < int(h.cislo_body.poradi[0]) or int(h.deadline_body.cislo.poradi[0]) > int(h.cislo_body.poradi[0])):
            log.error(f"Hodnocení {h.id} se špatně změnilo číslo z {h.cislo_body} na {h.deadline_body.cislo}")


class Migration(migrations.Migration):

    dependencies = [
        ('seminar', '0103_deadline'),
    ]

    operations = [
        migrations.AddField(
            model_name='hodnoceni',
            name='deadline_body',
            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='hodnoceni', to='seminar.deadline', verbose_name='deadline pro body'),
        ),
        migrations.RunPython(prirad_deadliny, migrations.RunPython.noop),
    ]