from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse
from django.utils.encoding import force_str
from django.utils.http import urlsafe_base64_encode, urlsafe_base64_decode
from django.urls import reverse

from django.views.decorators.csrf import csrf_exempt
from django.core.files.storage import default_storage
from django.core.files.base import ContentFile

from tournaments.models.device_token import DeviceToken

from .models import Court, DateInterval, Club, Tournament, CustomUser, Event, Round, GroupStage, Match, TeamScore, TeamRegistration, PlayerRegistration, Purchase, FailedApiCall
from .models import TeamSummon
from datetime import datetime, timedelta

from django.template import loader
from datetime import date
from django.http import JsonResponse, HttpResponse
from django.db.models import Q
import json
import asyncio
import csv

from api.tokens import account_activation_token

from qr_code.qrcode.utils import QRCodeOptions
from .utils.apns import send_push_notification
import os

from .forms import SimpleForm
from django.core.mail import EmailMessage


def index(request):

    club_id = request.GET.get('club')
    future = future_tournaments(club_id)
    live = live_tournaments(club_id)
    finished = finished_tournaments(club_id)

    club = None
    if club_id:
        club = get_object_or_404(Club, pk=club_id)

    return render(
        request,
        "tournaments/tournaments.html",
        {
            'future': future[:10],
            'live': live[:10],
            'ended': finished[:10],
            'club': club,
        }
    )

def tournaments_query(query, club_id, ascending):
    queries = [query, Q(is_private=False, is_deleted=False, event__club__isnull=False)]

    club = None
    if club_id:
        club = get_object_or_404(Club, pk=club_id)
        q_club = Q(event__club=club)
        queries.append(q_club)

    sortkey = 'start_date'
    if not ascending:
        sortkey = '-start_date'
    return Tournament.objects.filter(*queries).order_by(sortkey)

def finished_tournaments(club_id):
    ended_tournaments = tournaments_query(Q(end_date__isnull=False), club_id, False)
    return [t for t in ended_tournaments if t.display_tournament()]

def live_tournaments(club_id):
    tournaments = tournaments_query(Q(end_date__isnull=True), club_id, True)
    return [t for t in tournaments if t.display_tournament() and t.supposedly_in_progress()]

def future_tournaments(club_id):
    tomorrow = date.today() + timedelta(days=1)
    tournaments = tournaments_query(Q(end_date__isnull=True, start_date__gt=tomorrow), club_id, True)
    return [t for t in tournaments if t.display_tournament()]

def tournament_info(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/tournament_info.html', {
        'tournament': tournament,
    })

def tournaments(request):

    filter = int(request.GET.get('filter'))
    club_id = request.GET.get('club')

    title = ''
    tournaments = []
    if filter==0:
        title = 'À venir'
        tournaments = future_tournaments(club_id)
    elif filter==1:
        title = 'En cours'
        tournaments = live_tournaments(club_id)
    elif filter==2:
        title = 'Terminés'
        tournaments = finished_tournaments(club_id)

    return render(
        request,
        "tournaments/tournaments_list.html",
        {
            'tournaments': tournaments,
            'title': title,
            'club': club_id,
        }
    )

def clubs(request):
    all_clubs = Club.objects.all().order_by('name')
    clubs = []
    for club in all_clubs:
        if club.events_count() > 0:
            clubs.append(club)

    return render(request, 'tournaments/clubs.html', {
        'clubs': clubs,
    })

def club(request, club_id):
    club = get_object_or_404(Club, pk=club_id)
    return render(request, 'tournaments/summons.html', {
        'tournament': tournament,
        'team_summons': team_summons,
    })

def tournament(request, tournament_id):

    tournament = get_object_or_404(Tournament, pk=tournament_id)

    round_id = request.GET.get('round')
    group_stage_id = request.GET.get('group_stage')
    match_groups = tournament.match_groups(False, group_stage_id, round_id)


    bracket_rounds = tournament.round_set.filter(parent=None, group_stage_loser_bracket=False).order_by('-index')
    rounds = list(tournament.round_set.filter(group_stage_loser_bracket=True))
    rounds.extend(bracket_rounds)

    group_stages = tournament.groupstage_set.order_by('index')

    print(len(match_groups))
    print(len(rounds))
    print(len(group_stages))

    if tournament.display_matches():
        return render(request, 'tournaments/matches.html', {
            'tournament': tournament,
            'rounds': rounds,
            'group_stages': group_stages,
            'match_groups': match_groups,
        })
    else:
        return tournament_info(request, tournament_id)

def tournament_teams(request, tournament_id):

    tournament = get_object_or_404(Tournament, pk=tournament_id)
    teams = tournament.teams()

    return render(request, 'tournaments/teams.html', {
        'tournament': tournament,
        'teams': teams,
    })

def tournament_summons(request, tournament_id):

    tournament = get_object_or_404(Tournament, pk=tournament_id)
    team_summons = tournament.team_summons()

    return render(request, 'tournaments/summons.html', {
        'tournament': tournament,
        'team_summons': team_summons,
    })

def tournament_broadcasted_summons(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast/broadcasted_summons.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def tournament_summons_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    team_summons = [summon.to_dict() for summon in tournament.team_summons()]
    data = json.dumps(team_summons)
    return HttpResponse(data, content_type='application/json')

def tournament_broadcast_home(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast/broadcast.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def automatic_broadcast(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast/broadcasted_auto.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def qr_code_url(request, tournament_id):
    qr_code_url = reverse('tournament', args=[tournament_id])
    return request.build_absolute_uri(qr_code_url)

def qr_code_options():
    return QRCodeOptions(size=10, border=4, error_correction='L')

def tournament_matches(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast/broadcasted_matches.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def broadcast_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    broadcast = tournament.broadcast_content()
    data = json.dumps(broadcast)
    return HttpResponse(data, content_type='application/json')

def tournament_matches_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    matches, group_stages = tournament.broadcasted_matches_and_group_stages()
    live_matches = [match.live_match() for match in matches]

    data = json.dumps(live_matches, default=vars)
    return HttpResponse(data, content_type='application/json')

def tournament_group_stages(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    live_group_stages = list(tournament.live_group_stages())
    return render(request, 'tournaments/group_stages.html', {
        'tournament': tournament,
        'group_stages': live_group_stages,
    })

def tournament_broadcasted_group_stages(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast/broadcasted_group_stages.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def tournament_live_group_stage_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)

    gs_dicts = [gs.to_dict() for gs in tournament.live_group_stages()]
    # group_stages = tournament.live_group_stages()
    data = json.dumps(gs_dicts)
    return HttpResponse(data, content_type='application/json')

def tournament_rankings(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    rankings = tournament.rankings()

    return render(request, 'tournaments/rankings.html', {
        'tournament': tournament,
        'rankings': rankings,
    })

def tournament_rankings_json(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    rankings = tournament.rankings()

    data = json.dumps(rankings, default=vars)
    return HttpResponse(data, content_type='application/json')

def tournament_broadcast_rankings(request, tournament_id):
    tournament = get_object_or_404(Tournament, pk=tournament_id)
    return render(request, 'tournaments/broadcast/broadcasted_rankings.html', {
        'tournament': tournament,
        'qr_code_url': qr_code_url(request, tournament_id),
        'qr_code_options': qr_code_options(),
    })

def players(request):
    return render(request, 'tournaments/test.html')

def activate(request, uidb64, token):
    try:
        uid = force_str(urlsafe_base64_decode(uidb64))
        user = CustomUser.objects.get(pk=uid)
    except(TypeError, ValueError, OverflowError, CustomUser.DoesNotExist):
        user = None
    if user is not None and account_activation_token.check_token(user, token):
        user.is_active = True
        user.save()
        return HttpResponse('Votre email est confirmé. Vous pouvez maintenant vous connecter.')
    else:
        return HttpResponse('Le lien est invalide.')

def club_broadcast(request, broadcast_code):
    club = get_object_or_404(Club, broadcast_code=broadcast_code)
    q_not_deleted = Q(is_deleted=False, event__club=club)
    tournaments = Tournament.objects.filter(q_not_deleted).order_by('-start_date')

    return render(request, 'tournaments/broadcast/broadcast_club.html', {
        'club': club,
        'tournaments': tournaments,
    })

def download(request):
    return render(request, 'tournaments/download.html')

def test_apns(request):
    token = DeviceToken.objects.first()

    asyncio.run(send_push_notification(token.value, 'hello!'))

    return HttpResponse('OK!')

def test_websocket(request):
    return render(request, 'tournaments/test_websocket.html')

def terms_of_use(request):
    return render(request, 'terms_of_use.html')

import pandas as pd
from .utils.extensions import create_random_filename

@csrf_exempt
def xls_to_csv(request):
    if request.method == 'POST':
        # Check if the request has a file
        if 'file' in request.FILES:
            uploaded_file = request.FILES['file']

            # Save the uploaded file
            directory = 'tmp/csv/'
            file_path = os.path.join(directory, uploaded_file.name)
            file_name = default_storage.save(file_path, ContentFile(uploaded_file.read()))

            # convert to csv and save
            data_xls = pd.read_excel(file_name, 'Joueurs', index_col=None)
            csv_file_name = create_random_filename('players', 'csv')
            output_path = os.path.join(directory, csv_file_name)
            data_xls.to_csv(output_path, sep=';', index=False, encoding='utf-8')

            # Send the processed file back
            with default_storage.open(output_path, 'rb') as file:
                response = HttpResponse(file.read(), content_type='application/octet-stream')
                response['Content-Disposition'] = f'attachment; filename="players.csv"'

            # Clean up: delete both files
            default_storage.delete(file_path)
            default_storage.delete(output_path)

            return response
        else:
            return HttpResponse("No file was uploaded", status=400)
    else:
        return HttpResponse("Only POST requests are allowed", status=405)


def simple_form_view(request):

    if request.method == 'POST':
        # If this is a POST request, we need to process the form data
        form = SimpleForm(request.POST)
        if form.is_valid():
            # Process the data in form.cleaned_data
            name = form.cleaned_data['name']
            # Do something with the data (e.g., save to the database)
            # send_email_to_jap_list()
            send_email('laurent@staxriver.com', 'Laurent')
            return HttpResponse(f"Hello, {name}!")  # Simple response with name
    else:
        form = SimpleForm()
        print(request.method)
        # If this is a GET request, we display an empty form

    return render(request, 'tournaments/admin/mail_test.html', {'form': form})

def send_email_to_jap_list():

    # Open the CSV file
    with open('tournaments/static/misc/jap-liste.csv', 'r') as file:
        # Create a CSV reader object
        csv_reader = csv.reader(file)

        # Optionally, skip the header row if your CSV has one
        # next(csv_reader)

        # Iterate over each row in the CSV
        for row in csv_reader:
            # Check if the row has at least 4 elements
            if len(row) >= 4:
                # Get the second and fourth values
                name = row[2]  # Index 1 is the second column
                mail = row[3]  # Index 3 is the fourth column

                send_email(mail, name)

                # Print or process these values
                print(f"Name: {name}, mail: {mail}")
            else:
                print(f"Row doesn't have enough elements: {row}")


def send_email(mail, name):

    subject = "Hello from Python!"
    body = f"Hi {name},\n\nThis is a short message sent from a Python script!"

    email = EmailMessage(subject, body, to=[mail])
    email.send()