from django.shortcuts import render, redirect, get_object_or_404
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import User
from .models import QivipQuiz, QivipQuestion
from .forms import QuizForm, QuestionForm

# Übersicht aller Quizze
@login_required
def overview_quiz(request):
    quizzes = QivipQuiz.objects.filter(user_id=request.user)
    return render(request, 'library/overview_quiz.html', {'quizzes': quizzes})

# Neues Quiz erstellen
@login_required
def new_quiz(request):
    if request.method == 'POST':
        form = QuizForm(request.POST)
        if form.is_valid():
            quiz = form.save(commit=False)
            quiz.user_id = request.user
            quiz.save()
            form.save_m2m()  # Speichert die Many-to-Many Beziehungen (Tags)
            return redirect('library:edit_quiz', pk=quiz.pk)
    else:
        form = QuizForm()
    return render(request, 'library/form.html', {'form': form})

# Quiz bearbeiten
@login_required
def edit_quiz(request, pk):
    quiz = get_object_or_404(QivipQuiz, pk=pk, user_id=request.user)
    if request.method == 'POST':
        form = QuizForm(request.POST, instance=quiz)
        if form.is_valid():
            form.save()
            return redirect('library:overview_quiz')
    else:
        form = QuizForm(instance=quiz)
    return render(request, 'library/form.html', {'form': form})

# Quiz löschen
@login_required
def delete_quiz(request, pk):
    quiz = get_object_or_404(QivipQuiz, pk=pk, user_id=request.user)
    if request.method == 'POST':
        quiz.delete()
        return redirect('library:overview_quiz')
    return render(request, 'library/delete_confirmation.html', {'object': quiz})

# Quiz anzeigen
@login_required
def detail_quiz(request, pk):
    quiz = get_object_or_404(QivipQuiz, pk=pk, user_id=request.user)
    questions = QivipQuestion.objects.filter(quiz_id=quiz)
    return render(request, 'library/detail_quiz.html', {'quiz': quiz, 'questions': questions})

# Übersicht aller Fragen
@login_required
def question_list(request):
    questions = QivipQuestion.objects.filter(quiz_id__user_id=request.user)
    return render(request, 'library/question_list.html', {'questions': questions})

# Neue Frage erstellen
@login_required 
def new_question(request):
    if request.method == 'POST':
        form = QuestionForm(request.POST)
        if form.is_valid():
            question = form.save(commit=False)
            # Prüfe ob der User Zugriff auf das Quiz hat
            if question.quiz_id.user_id != request.user:
                return redirect('library:question_list')
            question.save()
            return redirect('library:edit_question', pk=question.pk)
    else:
        form = QuestionForm()
    return render(request, 'library/form.html', {'form': form})

# Frage bearbeiten
@login_required
def edit_question(request, pk):
    question = get_object_or_404(QivipQuestion, pk=pk, quiz_id__user_id=request.user)
    if request.method == 'POST':
        form = QuestionForm(request.POST, instance=question)
        if form.is_valid():
            form.save()
            return redirect('library:edit_question', pk=pk)
    else:
        form = QuestionForm(instance=question)
    return render(request, 'library/form.html', {'form': form})

# Frage löschen
@login_required
def delete_question(request, pk):
    question = get_object_or_404(QivipQuestion, pk=pk, quiz_id__user_id=request.user)
    if request.method == 'POST':
        question.delete()
        return redirect('library:detail_quiz', pk=question.quiz_id.pk)
    return render(request, 'library/delete_confirmation.html', {'object': question})