# -*- coding: utf-8 -*-
from django.shortcuts import get_object_or_404, render
from django.views import generic
from django.utils.translation import ugettext as _
from django.conf import settings
from django.http import HttpResponseForbidden,HttpResponse
from django.core.mail import send_mail
from django.core.context_processors import csrf

from .models import Oprava,Komentar,KorekturovanePDF, Organizator
from .forms import OpravaForm

import os
import json
import unicodedata

class KorekturyHelpView(generic.TemplateView):
    template_name = 'korektury/help.html'

class KorekturyListView(generic.ListView):
    model = KorekturovanePDF
    template_name = 'korektury/seznam.html'

### Korektury
class KorekturyBaseView(generic.TemplateView):
    model = Oprava
    template_name = 'korektury/opraf.html'
    form_class = OpravaForm

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)
        q = request.POST
        scroll = q.get('scroll')

        # prirazeni autora podle prihlaseni
        autor_user = request.user
        # pokud existuje ucet (user), ale neni to organizator = 403
        autor = Organizator.objects.filter(user=autor_user).first()
        if not autor:
            return HttpResponseForbidden()

        if not scroll:
            scroll = 0

        action = q.get('action')
        if (action == u''):  # Přidej
            x = int(q.get('x'))
            y = int(q.get('y'))
            text = q.get('txt')
            strana = int(q.get('img-id')[4:])
            pdf = KorekturovanePDF.objects.get(id=q.get('pdf'))

            op = Oprava(x=x,y=y, autor=autor, text=text, strana=strana,pdf = pdf)
            op.save()
            self.send_email_notification_komentar(op, autor, text)
        elif (action == u'del'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.delete()
        elif (action == u'update'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            text = q.get('txt')
            op.autor = autor
            op.text = text
            op.save()
        elif (action == u'undone'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.status = op.STATUS_K_OPRAVE
            op.save()
        elif (action == u'done'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.status = op.STATUS_OPRAVENO
            op.save()
        elif (action == u'wontfix'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.status = op.STATUS_NENI_CHYBA
            op.save()
        elif (action == u'comment'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            text = q.get('txt')
            kom = Komentar(oprava=op,autor=autor,text=text)
            kom.save()
            self.send_email_notification_komentar(op, autor, text)
        elif (action == u'update-comment'):
            id = int(q.get('id'))
            kom = Komentar.objects.get(id=id)
            text = q.get('txt')
            kom.text = text
            kom.autor = autor
            kom.save()
        elif (action == u'del-comment'):
            id = int(q.get('id'))
            kom = Komentar.objects.get(id=id)
            kom.delete()
        elif (action == u'delall'):
            pdf = KorekturovanePDF.objects.filter(id=q.get('pdf'))
            checked = q.get('yes')
            if checked:
                opravy = Oprava.objects.filter(pdf=pdf)
                komentare = Komentar.objects.filter(oprava=opravy)
                opravy.delete()
                komentare.delete()
        elif (action == u'set-state'):
            pdf = KorekturovanePDF.objects.get(id=q.get('pdf'))
            if (q.get('state') == u'adding'):
                pdf.status = pdf.STATUS_PRIDAVANI
            elif (q.get('state') == u'comitting'):
                pdf.status = pdf.STATUS_ZANASENI
            elif (q.get('state') == u'deprecated'):
                pdf.status = pdf.STATUS_ZASTARALE
            pdf.save()
        context = self.get_context_data()
        context['scroll'] = scroll
        context['autor'] = autor
        return render(request, 'korektury/opraf.html',context)

    def send_email_notification_komentar(self, oprava, autor, text):
        ''' Rozesle e-mail pri pridani komentare,
            ktery obsahuje text komentare.
        '''

        # parametry e-mailu
        odkaz = "https://mam.mff.cuni.cz/korektury/{}/".format(oprava.pdf.pk)
        from_email = 'korekturovatko@mam.mff.cuni.cz'
        subject = u'Nová korektura od {} v {}'.format(autor,
                                                     oprava.pdf.nazev)
        text = u"Text komentáře:\n\n{}\n\n=== Konec textu komentáře ===\n\
                \nodkaz do korekturovátka: {}\n\
                \nVaše korekturovátko\n".format(text, odkaz)

        # Prijemci e-mailu
        emails = set()
        # e-mail autora korektury
        email = oprava.autor.user.email
        if email:
            emails.add(email)

        # nalezeni e-mailu na autory komentaru
        for komentar in oprava.komentar_set.all():
            email_komentujiciho = komentar.autor.user.email
            if email_komentujiciho:
                emails.add(email_komentujiciho)

        # zodpovedny org
        if oprava.pdf.org:
            email_zobpovedny = oprava.pdf.org.user.email
            if email_zobpovedny:
                emails.add(email_zobpovedny)

        # odstran e-mail autora opravy
        email = autor.user.email
        if email:
            emails.discard(email)

        if not settings.SEND_EMAIL_NOTIFICATIONS:
            print "Poslal bych upozornění na tyto adresy: ", " ".join(emails)
            return

        send_mail(subject, text, from_email, list(emails))

    def get_context_data(self, **kwargs):
        context = super(KorekturyBaseView,self).get_context_data(**kwargs)
        pdf = get_object_or_404(KorekturovanePDF, id=self.kwargs['pdf'])
        context['pdf'] = pdf
        context['img_name'] = os.path.split(pdf.pdf.path)[1].split('.')[0]
        context['img_path'] = settings.KOREKTURY_IMG_DIR
        context['img_indexes'] = range(pdf.stran) 
        context['form_oprava'] = OpravaForm()
        opravy = Oprava.objects.filter(pdf=self.kwargs['pdf'])
        zasluhy = {}
        for o in opravy:
            if o.autor in zasluhy:
                zasluhy[o.autor]+=1
            else:
                zasluhy[o.autor]=1
            o.komentare = o.komentar_set.all()
            for k in o.komentare:
                if k.autor in zasluhy:
                    zasluhy[k.autor]+=1
                else: 
                    zasluhy[k.autor]=1
	zasluhy = [{'autor':jmeno, 'pocet':pocet} for (jmeno,pocet) in zasluhy.items()]
	zasluhy.sort(key=lambda z:z['pocet'],reverse=True)

        strany = set(o.strana for o in opravy)
        opravy_na_stranu = [{'strana': s, 'op_id': opravy.filter(strana=s)} for s in strany]
        context['opravy_strany'] = opravy_na_stranu
        
        context['opravy'] = opravy
        context['zasluhy'] = zasluhy
        return context

    def form_valid(self,form):
        return super(KorekturyView,self).form_valid(form)

### Korektury
class KorekturyView(generic.TemplateView):
    model = Oprava
    template_name = 'korektury/opraf.html'
    form_class = OpravaForm

    def get(self,request,*args,**kwargs):
        pdf = get_object_or_404(KorekturovanePDF, id=self.kwargs['pdf'])
	context = {}
        context['pdf'] = pdf.id
        context['img_name'] = os.path.split(pdf.pdf.path)[1].split('.')[0]
        context['img_path'] = settings.KOREKTURY_IMG_DIR
        context['img_indexes'] = range(pdf.stran) 

        opravy = Oprava.objects.filter(pdf=self.kwargs['pdf'])
        strany = set(o.strana for o in opravy)
        opravy_na_stranu = [{'strana': s, 'op_id': map(lambda o:o.id,opravy.filter(strana=s))} for s in strany]
        context['opravy_strany'] = opravy_na_stranu
        
	opravy = list(opravy.values())
	for o in opravy:
		o["autor"] = str(Organizator.objects.filter(id=(o[u"autor_id"]))[0])
        context['opravy'] = opravy
    	return HttpResponse(json.dumps(context),content_type="application/json")


class KorekturyRequestView(generic.TemplateView):
    model = Oprava
    template_name = 'korektury/opraf.html'
    form_class = OpravaForm

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)
        q = request.POST
        scroll = q.get('scroll')

        # prirazeni autora podle prihlaseni
        autor_user = request.user
        # pokud existuje ucet (user), ale neni to organizator = 403
        autor = Organizator.objects.filter(user=autor_user).first()
        if not autor:
            return HttpResponseForbidden()

        if not scroll:
            scroll = 0

        action = q.get('action')
        if (action == u''):  # Přidej
            x = int(q.get('x'))
            y = int(q.get('y'))
            text = q.get('txt')
            strana = int(q.get('img-id')[4:])
            pdf = KorekturovanePDF.objects.get(id=q.get('pdf'))

            op = Oprava(x=x,y=y, autor=autor, text=text, strana=strana,pdf = pdf)
            op.save()
            self.send_email_notification_komentar(op, autor, text)
        elif (action == u'del'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.delete()
        elif (action == u'update'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            text = q.get('txt')
            op.autor = autor
            op.text = text
            op.save()
        elif (action == u'undone'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.status = op.STATUS_K_OPRAVE
            op.save()
        elif (action == u'done'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.status = op.STATUS_OPRAVENO
            op.save()
        elif (action == u'wontfix'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            op.status = op.STATUS_NENI_CHYBA
            op.save()
        elif (action == u'comment'):
            id = int(q.get('id'))
            op = Oprava.objects.get(id=id)
            text = q.get('txt')
            kom = Komentar(oprava=op,autor=autor,text=text)
            kom.save()
            self.send_email_notification_komentar(op, autor, text)
        elif (action == u'update-comment'):
            id = int(q.get('id'))
            kom = Komentar.objects.get(id=id)
            text = q.get('txt')
            kom.text = text
            kom.autor = autor
            kom.save()
        elif (action == u'del-comment'):
            id = int(q.get('id'))
            kom = Komentar.objects.get(id=id)
            kom.delete()
        context = self.get_context_data()
        context['scroll'] = scroll
        context['autor'] = autor
        return render(request, 'korektury/opraf.html',context)

    def send_email_notification_komentar(self, oprava, autor, text):
        ''' Rozesle e-mail pri pridani komentare,
            ktery obsahuje text komentare.
        '''

        # parametry e-mailu
        odkaz = "https://mam.mff.cuni.cz/korektury/{}/".format(oprava.pdf.pk)
        from_email = 'korekturovatko@mam.mff.cuni.cz'
        subject = u'Nová korektura od {} v {}'.format(autor,
                                                     oprava.pdf.nazev)
        text = u"Text komentáře:\n\n{}\n\n=== Konec textu komentáře ===\n\
                \nodkaz do korekturovátka: {}\n\
                \nVaše korekturovátko\n".format(text, odkaz)

        # Prijemci e-mailu
        emails = set()
        # e-mail autora korektury
        email = oprava.autor.user.email
        if email:
            emails.add(email)

        # nalezeni e-mailu na autory komentaru
        for komentar in oprava.komentar_set.all():
            email_komentujiciho = komentar.autor.user.email
            if email_komentujiciho:
                emails.add(email_komentujiciho)

        # zodpovedny org
        if oprava.pdf.org:
            email_zobpovedny = oprava.pdf.org.user.email
            if email_zobpovedny:
                emails.add(email_zobpovedny)

        # odstran e-mail autora opravy
        email = autor.user.email
        if email:
            emails.discard(email)

        if not settings.SEND_EMAIL_NOTIFICATIONS:
            print "Poslal bych upozornění na tyto adresy: ", " ".join(emails)
            return

        send_mail(subject, text, from_email, list(emails))

    def get_context_data(self, **kwargs):
        context = super(KorekturyRequestView,self).get_context_data(**kwargs)
        pdf = get_object_or_404(KorekturovanePDF, id=self.kwargs['pdf'])
        context['pdf'] = pdf
        context['img_name'] = os.path.split(pdf.pdf.path)[1].split('.')[0]
        context['img_path'] = settings.KOREKTURY_IMG_DIR
        context['img_indexes'] = range(pdf.stran) 
        context['form_oprava'] = OpravaForm()
        opravy = Oprava.objects.filter(pdf=self.kwargs['pdf'])
        zasluhy = {}
        for o in opravy:
            if o.autor in zasluhy:
                zasluhy[o.autor]+=1
            else:
                zasluhy[o.autor]=1
            o.komentare = o.komentar_set.all()
            for k in o.komentare:
                if k.autor in zasluhy:
                    zasluhy[k.autor]+=1
                else: 
                    zasluhy[k.autor]=1
	zasluhy = [{'autor':jmeno, 'pocet':pocet} for (jmeno,pocet) in zasluhy.items()]
	zasluhy.sort(key=lambda z:z['pocet'],reverse=True)

        strany = set(o.strana for o in opravy)
        opravy_na_stranu = [{'strana': s, 'op_id': opravy.filter(strana=s)} for s in strany]
        context['opravy_strany'] = opravy_na_stranu
        
        context['opravy'] = opravy
        context['zasluhy'] = zasluhy
        return context

    def form_valid(self,form):
        return super(KorekturyView,self).form_valid(form)