from django.db import models

from mamweb.models.base import SeminarModelBase
from .reseni import Reseni
from tvorba.models.cislo import Cislo
from tvorba.models.deadline import Deadline
from tvorba.models.problem import Problem


class Hodnoceni(SeminarModelBase):
	class Meta:
		db_table = 'seminar_hodnoceni'
		verbose_name = 'Hodnocení'
		verbose_name_plural = 'Hodnocení'

	# Interní ID
	id = models.AutoField(primary_key=True)

	body = models.DecimalField(
		max_digits=8, decimal_places=1, verbose_name='body',
		blank=True, null=True,
	)

	cislo_body = models.ForeignKey(
		Cislo, verbose_name='číslo pro body',
		related_name='hodnoceni', blank=True, null=True,
		on_delete=models.PROTECT,
	)

	# V ročníku < 26 nastaveno na deadline vygenerovaný pro původní cislo_body
	deadline_body = models.ForeignKey(
		Deadline, verbose_name='deadline pro body',
		related_name='hodnoceni', blank=True, null=True,
		on_delete=models.PROTECT,
	)

	reseni = models.ForeignKey(
		Reseni, verbose_name='řešení', on_delete=models.CASCADE,
	)

	problem = models.ForeignKey(
		Problem, verbose_name='problém',
		related_name='hodnoceni', on_delete=models.PROTECT,
	)

	feedback = models.TextField(
		'zpětná vazba', blank=True, default='',
		help_text='Zpětná vazba řešiteli (plain text)',
	)

	def __str__(self):
		return "{}, {}, {}".format(self.problem, self.reseni, self.body)