from django.shortcuts import get_object_or_404, render
from django.http import HttpResponse
from django.views import generic
from django.conf import settings
from django.contrib.staticfiles.finders import find
from seminar.models import Soustredeni, Resitel, Soustredeni_Ucastnici, Nastaveni # Tohle je stare a chceme se toho zbavit. Pouzivejte s.ToCoChci
import csv
import tempfile
import shutil
import subprocess
from pathlib import Path

from seminar.views import obalkyView


class SoustredeniListView(generic.ListView):
	model = Soustredeni
	template_name = 'soustredeni/seznam_soustredeni.html'

	def get_queryset(self):
		return (
			Soustredeni.objects
			.prefetch_related(
				"ucastnici", "ucastnici__osoba",
				"organizatori", "organizatori__osoba",
				"galerie_set"
			)
			.select_related("rocnik")
		)


def soustredeniObalkyView(request, soustredeni):
	soustredeni = get_object_or_404(Soustredeni, id=soustredeni)
	return obalkyView(request, soustredeni.ucastnici.all())


class SoustredeniUcastniciBaseView(generic.ListView):
	model = Soustredeni_Ucastnici

	def get_queryset(self):
		soustredeni = get_object_or_404(
			Soustredeni,
			pk=self.kwargs["soustredeni"]
		)
		return Soustredeni_Ucastnici.objects.filter(
			soustredeni=soustredeni).select_related('resitel')


class SoustredeniMailyUcastnikuView(SoustredeniUcastniciBaseView):
	""" Seznam e-mailů řešitelů oddělených čárkami. """
	model = Soustredeni_Ucastnici
	template_name = 'soustredeni/maily_ucastniku.txt'


class SoustredeniUcastniciView(SoustredeniUcastniciBaseView):
	""" HTML tabulka účastníků pro tisk. """
	model = Soustredeni_Ucastnici
	template_name = 'soustredeni/seznam_ucastniku.html'


def soustredeniUcastniciExportView(request, soustredeni):
	soustredeni = get_object_or_404(Soustredeni, id=soustredeni)
	ucastnici = Resitel.objects.filter(soustredeni=soustredeni)
	response = HttpResponse(content_type='text/csv')
	response['Content-Disposition'] = 'attachment; filename="ucastnici.csv"'

	writer = csv.writer(response)
	writer.writerow(["jmeno", "prijmeni", "rok_maturity", "telefon", "email", "ulice", "mesto", "psc","stat"])
	for u in ucastnici:
		o = u.osoba
		writer.writerow([o.jmeno, o.prijmeni, str(u.rok_maturity), o.telefon, o.email, o.ulice, o.mesto, o.psc, o.stat.name])
	return response

def soustredeniStvrzenkyView(request, soustredeni):
	soustredeni = get_object_or_404(Soustredeni, id=soustredeni)
	ucastnici = Resitel.objects.filter(soustredeni=soustredeni)
	castka = Nastaveni.get_solo().cena_sous
	tex = render(request, 'soustredeni/stvrzenky.tex', {'ucastnici': ucastnici, 'soustredeni': soustredeni, 'castka': castka}).content

	tempdir = Path(tempfile.mkdtemp())
	with open(tempdir / "stvrzenky.tex", "w") as texfile:
		texfile.write(tex.decode())

	shutil.copy(find('images/logomm.pdf'), tempdir)
	subprocess.call(["pdflatex", "stvrzenky.tex"], cwd = tempdir, stdout=subprocess.DEVNULL)

	with open(tempdir / "stvrzenky.pdf", "rb") as pdffile:
		response = HttpResponse(pdffile.read(), content_type='application/pdf')
	shutil.rmtree(tempdir)
	return response