import datetime
from django.shortcuts import get_object_or_404, render
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.views import generic
from .models import Problem, Cislo, Reseni, VysledkyKCislu, Nastaveni, Rocnik

class ExportIndexView(generic.base.TemplateView):
    template_name = 'seminar/export_index.csv'
    content_type = 'text/plain; charset=utf-8'
    def get_context_data(self, **kwargs):
        context = super(ExportIndexView, self).get_context_data(**kwargs)
        context['exports'] = []
        for r in Rocnik.objects.all():
            if r.verejna_cisla():
                url = reverse('seminar_export_rocnik', kwargs={'prvni_rok': r.prvni_rok})
                context['exports'].append(url.split('/')[-1])
        return context


class ExportRocnikView(generic.DetailView):
    slug_field = 'prvni_rok'
    slug_url_kwarg = 'prvni_rok'
    model = Rocnik
    template_name = 'seminar/export_rocnik.csv'
    content_type = 'text/plain; charset=utf-8'
    def get_context_data(self, **kwargs):
        context = super(ExportRocnikView, self).get_context_data(**kwargs)

        rocnik = context['rocnik']
        cislo = rocnik.posledni_verejne_cislo()
        sloupce = ['id', 'name', 'surname',
                   'gender', 'born', 'email', 'end-year',
                   'street', 'town', 'postcode', 'country',
                   'spam-flag', 'spam-date', 'school', 'school-name',
                   'points', 'rank',]
        radky = []

        vysledky = VysledkyKCislu.objects.filter(cislo = cislo).select_related("resitel").all()

        posledni_body = 100000
        posledni_poradi = 0
        for vi in range(len(vysledky)):
            v = vysledky[vi]
            rd = {}

            rd['name'] = v.resitel.jmeno
            rd['surname'] = v.resitel.prijmeni
            rd['id'] = v.resitel.id

            rd['gender'] = 'M' if v.resitel.pohlavi_muz else 'F'
            if v.resitel.datum_narozeni:
                rd['born'] = v.resitel.datum_narozeni.strftime("%Y-%m-%d")
            else:
                rd['born'] = ''
            rd['email'] = v.resitel.email
            rd['end-year'] = v.resitel.rok_maturity

            # TODO(gavento): Adresa skoly, kdyz preferuje zasilani tam?
            rd['street'] = v.resitel.ulice
            rd['town'] = v.resitel.mesto
            rd['postcode'] = v.resitel.psc
            rd['country'] = v.resitel.stat

            if v.resitel.datum_souhlasu_zasilani:
                rd['spam-flag'] = 'Y'
                rd['spam-date'] = v.resitel.datum_souhlasu_zasilani.strftime("%Y-%m-%d")
            else:
                rd['spam-flag'] = ''
                rd['spam-date'] = ''
            
            if v.resitel.skola:
                rd['school'] = v.resitel.skola.aesop_id
                rd['school-name'] = str(v.resitel.skola)
            else:
                rd['school'] = ''
                rd['school-name'] = 'Skola neni znama'

            if posledni_body > v.body_celkem:
                posledni_body = v.body_celkem
                posledni_poradi = vi + 1
            rd['rank'] = posledni_poradi
            rd['points'] = v.body_celkem

            r = []
            for c in sloupce:
                r.append(rd.pop(c))
            assert len(rd) == 0
            radky.append(r)

        context['date'] = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        context['cislo'] = cislo
        context['sloupce'] = sloupce
        context['radky'] = radky
        return context