import datetime, django
from django.shortcuts import get_object_or_404, render
from django.http import HttpResponse
from django.urls import reverse
from django.views import generic
from django.utils.encoding import force_text

from .models import Problem, Cislo, Reseni, Nastaveni, Rocnik, Soustredeni
#from .models import VysledkyZaCislo, VysledkyKCisluZaRocnik, VysledkyKCisluOdjakziva
from .ovvpfile import OvvpFile

class ExportIndexView(generic.View):
    def get(self, request):

        ls = []
        for r in Rocnik.objects.filter(exportovat = True):
            url = reverse('seminar_export_rocnik', kwargs={'prvni_rok': r.prvni_rok})
            ls.append(url.split('/')[-1])
        for s in Soustredeni.objects.filter(exportovat = True):
            url = reverse('seminar_export_sous', kwargs={'datum_zacatku': s.datum_zacatku.isoformat()})
            ls.append(url.split('/')[-1])

        return HttpResponse('\n'.join(ls) + '\n', content_type='text/plain; charset=utf-8')


def default_ovvpfile(event, rocnik):
    of = OvvpFile()
    of.headers['version'] = '1'
    of.headers['event'] = event
    of.headers['year'] = force_text(rocnik.prvni_rok)
    of.headers['date'] = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
    of.headers['id-scope'] = 'mam'
    of.headers['id-generation'] = '1'
    return of


class ExportSousView(generic.View):

    def get(self, request, datum_zacatku=None):
        try:
            dz = django.utils.dateparse.parse_date(datum_zacatku)
        except:
            dz = None
        if dz is None:
            raise django.http.Http404()

        s = get_object_or_404(Soustredeni, datum_zacatku=dz, exportovat=True)

        akce = {Soustredeni.TYP_JARNI: 'MaM.sous.jaro',
                Soustredeni.TYP_PODZIMNI: 'MaM.sous.podzim',
                Soustredeni.TYP_VIKEND: 'MaM.vikend',
                }[s.typ]

        of = default_ovvpfile(akce, s.rocnik)
        of.headers['x-event-begin'] = s.datum_zacatku.isoformat()
        of.headers['x-event-end'] = s.datum_konce.isoformat()
        of.headers['x-event-location'] = s.misto
        of.headers['comment'] = u'MaM-Web export ucastniku soustredeni v {x-event-location} od {x-event-begin} do {x-event-end}'.format(**of.headers)
        of.columns = ['id', 'name', 'surname', 'gender', 'email', 'end-year', 'school', 'school-name']
         
        for u in s.ucastnici.all():
            of.rows.append(u.export_row())
        
        return of.to_HttpResponse()
        

class ExportRocnikView(generic.View):

    def get(self, request, prvni_rok=None):
        try:
            pr = int(prvni_rok)
        except:
            pr = None
        if pr is None:
            raise django.http.Http404()

        rocnik = get_object_or_404(Rocnik, prvni_rok=pr, exportovat=True)
        cislo = rocnik.posledni_zverejnena_vysledkovka_cislo()
        vysledky = VysledkyKCisluZaRocnik.objects.filter(cislo = cislo).select_related("resitel").order_by('-body').all()

        of = default_ovvpfile('MaM.rocnik', rocnik)
        of.headers['comment'] = u'MaM-Web export aktivnich resitelu rocniku {rocnik} do cisla {cislo}'.format(
                rocnik=rocnik, cislo=cislo)
        of.columns = ['id', 'name', 'surname', 'gender', 'born', 'email', 'end-year',
                'street', 'town', 'postcode', 'country', 'spam-flag', 'spam-date',
                'school', 'school-name', 'points', 'rank',]
         
        posledni_body = 100000
        posledni_poradi = 0
        for vi in range(len(vysledky)):

            v = vysledky[vi]
            rd = v.resitel.export_row()

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

            of.rows.append(rd)
        
        return of.to_HttpResponse()