from dal import autocomplete
from django.shortcuts import get_object_or_404
from django.db.models import Q

import seminar.models as m
from .helpers import LoginRequiredAjaxMixin

# TODO filosofie - zkratky, jak v databázi, tak ve vyhledávání (SPŠE, GASOŠ, Kpt., soukr)
class SkolaAutocomplete(autocomplete.Select2QuerySetView):
	def get_queryset(self):
        	# Don't forget to filter out results depending on the visitor !
		qs = m.Skola.objects.all()
		if self.q:
			words = self.q.split(' ') #TODO re split podle bileho znaku
			partq = Q()
			for w in words:	# Hledej po slovech, zahoď čárky a tečky z konců. 
				if w[-1] in (".",","):
					w = w[:-1]

				partq &= (Q(nazev__icontains=w)|Q(kratky_nazev__icontains=w)|Q(ulice__icontains=w)|Q(mesto__icontains=w))
			qs = qs.filter(partq)
		
		return qs

class ResitelAutocomplete(LoginRequiredAjaxMixin,autocomplete.Select2QuerySetView):
	def get_queryset(self):
		qs = m.Resitel.objects.all()
		if self.q:
			parts = self.q.split()
			query = Q()
			for part in parts:
				query &= (
					Q(osoba__jmeno__istartswith=self.q)|
					Q(osoba__prijmeni__istartswith=self.q)|
					Q(osoba__prezdivka__istartswith=self.q)
				)
			qs = qs.filter(query)
		return qs

class OdevzdatelnyProblemAutocomplete(autocomplete.Select2QuerySetView):
	def get_queryset(self):
		nastaveni = get_object_or_404(m.Nastaveni)
		rocnik = nastaveni.aktualni_rocnik
		# Od tohoto místa dál jsem zkoušel spoustu variací podle https://django-polymorphic.readthedocs.io/en/stable/advanced.html
		temaQ = Q(Tema___rocnik = rocnik, stav=m.Problem.STAV_ZADANY)
		ulohaQ = Q(Uloha___cislo_zadani__rocnik = rocnik, stav=m.Problem.STAV_ZADANY)
		clanekQ = Q(Clanek___cislo__rocnik = rocnik, stav=m.Problem.STAV_ZADANY)
		qs = m.Problem.objects.filter(temaQ | ulohaQ | clanekQ)
		#print(temata, ulohy, clanky)
		#ulohy.union(temata, all=True)
		#print(ulohy)
		#ulohy.union(clanky, all=True)
		#print(ulohy)
		#qs = ulohy
		print(qs)
		if self.q:
			qs = qs.filter(
					Q(nazev__icontains=self.q))
		return qs

# Ceka na autocomplete v3
# class OrganizatorAutocomplete(autocomplete.Select2QuerySetView):
# 	def get_queryset(self):
# 		if not self.request.user.is_authenticated():
# 			return Organizator.objects.none()
#
# 		qs = aktivniOrganizatori()
#
# 		if self.q:
# 			if self.q[0] == "!":
# 				qs = Organizator.objects.all()
# 				query = self.q[1:]
# 			else:
# 				query = self.q
# 			qs = qs.filter(
# 				Q(prezdivka__isstartswith=query)|
# 				Q(user__first_name__isstartswith=query)|
# 				Q(user__last_name__isstartswith=query))
#
# 		return qs