add: upload individual questions

app.py

@@ -9,7 +9,7 @@ from flask import Flask, render_template, request, session, redirect, url_for, a
 from flask_socketio import SocketIO, emit, join_room
 from dotenv import load_dotenv
 
-# global store of all games, keyed by secret
+# global store of all games, keyed by secret. Each entry will hold its own questions list.
 games = {}
 
 # Load environment vars
@@ -19,18 +19,6 @@ app.config['SECRET_KEY'] = os.getenv('SECRET_KEY', 'dev')
 # manage_session ensures Flask session is available in SocketIO handlers
 socketio = SocketIO(app, manage_session=True)
 
-# Expect columns: question, answer1..answer4, correct (column name)
-df = pd.read_excel('quizzes/questions.xlsx')
-questions = []
-for _, row in df.iterrows():
-    correct_col = row['correct']  # e.g. 'answer3'
-    correct_text = row[correct_col]
-    questions.append({
-        'question': row['question'],
-        'options': [row[f'answer{i}'] for i in range(1,5)],  # only four options
-        'correct': correct_text
-    })
-
 # In-memory game state
 game = {
     'players': {},
@@ -40,7 +28,7 @@ game = {
     'started': False
 }
 
-@app.route('/')
+@app.route('/', methods=['GET'])
 def host():
     session['role'] = 'host'
     # — manage per-game secret in session —
@@ -48,14 +36,19 @@ def host():
     if not secret:
         secret = uuid.uuid4().hex[:8]
         session['secret'] = secret
-    # ensure game exists
+    # ensure game exists (with questions placeholder)
     if secret not in games:
         games[secret] = {
+            'questions': None,
             'players': {}, 'order': [],
             'current_q': 0, 'answered': [],
             'started': False, 'finished': False,
             'revealed': False
         }
+    game = games[secret]
+    # if no question file has been uploaded yet, show upload form
+    if not game.get('questions'):
+        return render_template('upload.html')
 
     # build join URL + QR
     join_url = url_for('player', secret=secret, _external=True)
@@ -71,6 +64,41 @@ def host():
         secret=secret
     )
 
+@app.route('/upload', methods=['POST'])
+def upload():
+    session['role'] = 'host'
+    secret = session.get('secret')
+    if not secret or secret not in games:
+        return redirect(url_for('host'))
+    game = games[secret]
+    # retrieve uploaded file
+    file = request.files.get('file')
+    if not file:
+        return render_template('upload.html', error='Keine Datei ausgewählt')
+    # try to read Excel
+    try:
+        df = pd.read_excel(file)
+    except Exception:
+        return render_template('upload.html', error='Ungültige Excel-Datei')
+    # mandatory columns
+    required = ['question','answer1','answer2','answer3','answer4','correct']
+    if not all(col in df.columns for col in required):
+        return render_template('upload.html', error=f'Fehler in Datei: Fehlende Spalten. Erforderlich: {required}')
+    # validate that 'correct' references one of the answer columns
+    if not df['correct'].isin(['answer1','answer2','answer3','answer4']).all():
+        return render_template('upload.html', error='Fehler in Datei: Antwortspalte "correct" muss einen der Werte "answer1", "answer2", "answer3" oder "answer4" enthalten.')
+    # build per-game question list
+    questions = []
+    for _, row in df.iterrows():
+        col = row['correct']
+        questions.append({
+            'question': row['question'],
+            'options': [row[f'answer{i}'] for i in range(1,5)],
+            'correct': row[col]
+        })
+    game['questions'] = questions
+    # once upload and validation succeeds, redirect to host view (which will show the QR)
+    return redirect(url_for('host'))
 
 @app.route('/new_game', methods=['POST'])
 def new_game():
@@ -185,8 +213,8 @@ def on_connect():
         players = [game['players'][pid]['name'] for pid in game['order']]
         emit('update_roster', {'players': players})
 
-        if game.get('started') and game['current_q'] < len(questions):
-            q = questions[game['current_q']]
+        if game.get('started') and game['current_q'] < len(game['questions']):
+            q = game['questions'][game['current_q']]
             emit('new_question', {'question': q['question']}, room='host')
         return
 
@@ -223,7 +251,7 @@ def on_start_game():
     game = games[secret]
 
     # if already through, reset
-    if game.get('started') or game['current_q'] >= len(questions):
+    if game.get('started') or game['current_q'] >= len(game['questions']):
         game.update({
             'current_q': 0,
             'answered':  [],
@@ -274,7 +302,7 @@ def on_next_question():
     game = games[secret]
     game['current_q'] += 1
 
-    if game['current_q'] < len(questions):
+    if game['current_q'] < len(game['questions']):
         _send_question(secret)
     else:
         # mark finished & emit final boards
@@ -314,7 +342,7 @@ def on_show_answer():
     game = games[secret]
     game['revealed'] = True
     # find the correct answer text for current question
-    correct = questions[game['current_q']]['correct']
+    correct = game['questions'][game['current_q']]['correct']
     # emit to host so they can display it
     emit('answer_revealed', {'correct': correct}, room='host')
     # emit to all players so they can highlight it
@@ -343,7 +371,7 @@ def _send_sync_state(pid, game):
     # question?
     else:
         idx = game['current_q']
-        q   = questions[idx]
+        q   = game['questions'][idx]
         answered = any(pid == p for p,_ in game['answered'])
         emit('sync_state', {
             'state':    'question',
@@ -356,7 +384,7 @@ def _send_sync_state(pid, game):
 def _send_question(secret):
     game = games[secret]
     game['revealed'] = False
-    q = questions[game['current_q']]
+    q = game['questions'][game['current_q']]
     # clear previous answers
     game['answered'].clear()
     # broadcast
@@ -378,7 +406,7 @@ def _score_and_emit(secret):
     per_q     = []
 
     # grab the current question’s correct answer
-    correct = questions[game['current_q']]['correct']
+    correct = game['questions'][game['current_q']]['correct']
     # take only the most‐recent submission
     pid, ans = game['answered'][-1]
 
@@ -408,7 +436,7 @@ def _score_and_emit(secret):
     socketio.emit('overall_leader',  {'board':  board}, room='player')
 
     # if that was the last question, finish up
-    if game['current_q'] >= len(questions):
+    if game['current_q'] >= len(game['questions']):
         game['finished'] = True
         socketio.emit('game_over', {'board': board}, room='host')
         for psid, pdata in game['players'].items():

templates/host.html

@@ -1,7 +1,7 @@
 <!-- host.html -->
 {% extends 'base.html' %}
 {% block content %}
-<h1 class="mb-4">Bibelquiz</h1>
+<h1 class="mb-4">Public Quiz</h1>
 <div class="container" id="host-app">
   <!-- QR & Join Roster -->
   <div id="qrContainer" class="mb-4 text-center">

templates/player.html

@@ -22,7 +22,7 @@
     <form id="joinForm" action="{{ url_for('do_join') }}" method="post">
       <div class="input-group mb-3">
         <input name="name" id="nameInput" type="text"
-              class="form-control" placeholder="Name eingeben" />
+              class="form-control" placeholder="Deinen Name eingeben..." />
         <button type="submit" class="btn btn-success">Beitreten</button>
       </div>
     </form>

templates/upload.html

@@ -0,0 +1,24 @@
+{% extends 'base.html' %}
+{% block content %}
+<h1 class="mb-4">Fragebogen hochladen</h1>
+
+<!-- Download-Link zur Beispiel-Datei -->
+<div class="mb-3">
+  <a href="{{ url_for('static', filename='questions_example.xlsx') }}" class="btn btn-outline-secondary">
+    Beispiel-Excel-Datei herunterladen
+  </a>
+</div>
+
+<form action="{{ url_for('upload') }}" method="post" enctype="multipart/form-data">
+  <div class="mb-3">
+    <label for="file" class="form-label">Excel-Datei auswählen</label>
+    <input class="form-control" type="file" id="file" name="file" accept=".xlsx,.xls">
+  </div>
+  <button type="submit" class="btn btn-primary">Hochladen</button>
+</form>
+
+{% if error %}
+  <div class="alert alert-danger mt-3">{{ error }}</div>
+{% endif %}
+
+{% endblock %}