import json
from collections import OrderedDict

from django.contrib.auth import authenticate, login, logout
from django.http import JsonResponse, HttpResponse
from django.shortcuts import render, redirect
from django.template import loader

from .models import Tea, TeaType, TeaCategory, Pic, Choice
# Create your views here.
from .utils import get_extension


def login_view(request):
    return render(request, 'login.html')


def login_requiered(func):
    def wrapper(*args, **kwargs):
        request = args[0]
        if request.user.is_authenticated:
            return func(*args, **kwargs)
        else:
            return redirect('login_view')

    return wrapper


def list_of_teas(request):
    my_choice = Choice.objects.filter(users__in=[request.user]).first()
    if my_choice is None:
        choice = json.loads(my_choice.choice)
    else:
        choice = {}
    print(choice)
    dic = OrderedDict()
    for cat in TeaCategory.objects.all():
        dic[cat.name] = OrderedDict()

    for tt in TeaType.objects.all():
        if tt.preferred is not None:
            dic[tt.category.name][tt.name] = OrderedDict()
            dic[tt.category.name][tt.name]['preferred'] = tt.preferred.name
            dic[tt.category.name][tt.name]['price'] = int(tt.preferred.price / 100)
            dic[tt.category.name][tt.name]['pic'] = '/media/' + str(tt.preferred.pic.id) + '.' + get_extension(
                tt.preferred.pic.href)
            dic[tt.category.name][tt.name]['ms'] = [tt.preferred.m * x for x in range(0, 11)],
            dic[tt.category.name][tt.name]['my_m'] = choice.get(str(tt.id), 0)

    return dic


def list_of_choices(request):
    arr = []
    voted = False
    my_choice = Choice.objects.filter(users__in=[request.user]).first()
    if my_choice is not None:
        voted = True
        json.loads(my_choice.choice)
        arr.append({'voted': [user.username for user in my_choice.votes.all()],
                    'chosed': [user.username for user in my_choice.users.all()],
                    'votes': len(list(my_choice.votes.all())) + len(list(my_choice.users.all())),
                    'teas': sorted([Tea.objects.get(id=int(tea_id)).name + ':' + str(mass) for tea_id, mass in
                                    json.loads(my_choice.choice).items()]),
                    'class': 'my_choice', 'id': my_choice.id})
        choices = list(Choice.objects.all().exclude(id=my_choice.id))
    else:
        choices = list(Choice.objects.all())
    for choice in choices:
        arr.append({'voted': [user.username for user in choice.votes.all()],
                    'chosed': [user.username for user in choice.users.all()],
                    'votes': len(list(choice.votes.all())) + len(list(choice.users.all())),
                    'teas': sorted([Tea.objects.get(id=int(tea_id)).name + ':' + str(mass) for tea_id, mass in
                                    json.loads(choice.choice).items()]),
                    'class': 'choice', 'id': choice.id})
    return {'choices': arr, 'voted': voted}


@login_requiered
def choose(request):
    context = {'categories': list_of_teas()}
    template = loader.get_template('choose.html')
    return HttpResponse(template.render(context, request))


@login_requiered
def home(request):
    context = list_of_choices(request)
    template = loader.get_template('vote.html')
    return HttpResponse(template.render(context, request))


def confirm_choose(request):
    if request.user.is_authenticated:
        choice = json.loads(request.body.decode(encoding='UTF-8'))
        d = {}
        for key in choice:
            if choice[key] != 0:
                tea = Tea.objects.get(name=key)
                d[tea.id] = choice[key]
        choice_string = json.dumps(d, sort_keys=True)
        previous = Choice.objects.filter(users__in=[request.user]).first()
        if previous is not None:
            if previous.choice == choice_string:
                return JsonResponse({'response': 'unchanged'})
            previous.users.remove(request.user)
            if not previous.users.exists():
                previous.delete()
        my_choice, _ = Choice.objects.get_or_create(choice=choice_string)
        if request.user not in list(my_choice.users.all()):
            my_choice.users.add(request.user)
            if request.user in list(my_choice.votes.all()):
                my_choice.votes.remove(request.user)
        return JsonResponse({'response': 'ok'})
    else:
        return JsonResponse({'response': 'unauthenticated'})


def confirm_vote(request):
    if request.user.is_authenticated:
        vote = json.loads(request.body.decode(encoding='UTF-8'))
        choice = Choice.objects.filter(id=vote['vote']).first()
        if choice is None:
            return JsonResponse({'response': 'not found'})
        my_choice = Choice.objects.filter(users__in=[request.user]).first()
        if my_choice is not None:
            if my_choice.id == choice.id:
                return JsonResponse({'response': 'FUK U'})
        choice.votes.add(request.user)
        return JsonResponse({'response': 'ok'})
    else:
        return JsonResponse({'response': 'unauthenticated'})


def confirm_cancel_vote(request):
    if request.user.is_authenticated:
        vote = json.loads(request.body.decode(encoding='UTF-8'))
        choice = Choice.objects.filter(id=vote['vote']).first()
        if choice is None:
            return JsonResponse({'response': 'not found'})
        my_choice = Choice.objects.filter(users__in=[request.user]).first()
        if my_choice is not None:
            if my_choice.id == choice.id:
                return JsonResponse({'response': 'WAT'})
        choice.votes.remove(request.user)
        return JsonResponse({'response': 'ok'})
    else:
        return JsonResponse({'response': 'unauthenticated'})


def logout_view(request):
    logout(request)
    return redirect(login_view)