add show answer

app.py

@@ -53,7 +53,8 @@ def host():
         games[secret] = {
             'players': {}, 'order': [],
             'current_q': 0, 'answered': [],
-            'started': False, 'finished': False
+            'started': False, 'finished': False,
+            'revealed': False
         }
 
     # build join URL + QR
@@ -256,6 +257,8 @@ def on_submit_answer(data):
     if not secret or secret not in games or pid not in games[secret]['players']:
         return
     game = games[secret]
+    if game.get('revealed'):
+        return
     if any(pid == p for p,_ in game['answered']):
         return
 
@@ -301,7 +304,22 @@ def on_rejoin_game():
     join_room('player')
     join_room(pid)
     _send_sync_state(pid, game)
-    
+
+
+@socketio.on('show_answer')
+def on_show_answer():
+    secret = session.get('secret')
+    if session.get('role') != 'host' or not secret or secret not in games:
+        return
+    game = games[secret]
+    game['revealed'] = True
+    # find the correct answer text for current question
+    correct = 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
+    socketio.emit('answer_revealed', {'correct': correct}, room='player')
+
 
 # helpers
 
@@ -337,6 +355,7 @@ def _send_sync_state(pid, game):
 
 def _send_question(secret):
     game = games[secret]
+    game['revealed'] = False
     q = questions[game['current_q']]
     # clear previous answers
     game['answered'].clear()
@@ -403,4 +422,9 @@ def _score_and_emit(secret):
 
 
 if __name__ == '__main__':
+    # show own IP address
+    import socket
+    hostname = socket.gethostname()
+    ip_address = socket.gethostbyname(hostname)
+    print(f"Running on http://{ip_address}:5000/")
     socketio.run(app, host='0.0.0.0', port=5000)

templates/host.html

@@ -25,14 +25,15 @@
   <!-- Question & Current Leaderboard -->
   <div id="host-question" style="display:none;">
     <h2 id="qText" style="font-size:5rem;"></h2>
-    <button id="nextBtn" class="btn btn-warning mt-3">Nächste Frage</button>
+    <div id="host-results" style="display:none; margin:20px;">
+      <ul id="perQ" class="list-group mb-3 text-center"></ul>
+    </div>
+    <div class="mt-3">
+      <button id="showAnswerBtn" class="btn btn-info">Antwort zeigen</button>
+      <button id="nextBtn" class="btn btn-warning" disabled>Nächste Frage</button>
+    </div>
   </div>
 
-  <!-- Per-Question and Overall Results -->
-  <div id="host-results" style="display:none;">
-    <h4>Question Results</h4>
-    <ul id="perQ" class="list-group mb-3"></ul>
-  </div>
 
   <!-- Final Top-10 Leaderboard -->
   <div id="final-results" style="display:none;" class="mt-4">
@@ -90,6 +91,9 @@
     $('#qrContainer, #startBtn, #rosterHeader, #roster').hide();
     $('#host-question').show();
     $('#qText').text(data.question);
+    $('#host-results').hide();
+    $('#showAnswerBtn').prop({ disabled: false }).show();
+    $('#nextBtn').prop('disabled', true);
   });
 
   // Overall leaderboard updates (max 5 rows)
@@ -103,21 +107,31 @@
     });
   });
 
-  // Per-question results
-  socket.on('question_leader', data => {
-    console.log('Question leader:', data.results);
-    $('#perQ').empty();
-    data.results.forEach(r => {
-      $('#perQ').append(`<li class="list-group-item">${r.name}: +${r.points}</li>`);
-    });
-  });
-
   // Next question
   $('#nextBtn').off('click').on('click', () => {
     console.log('Next question clicked');
     socket.emit('next_question');
   });
 
+  // when host clicks “Show Answer”
+  $('#showAnswerBtn').off('click').on('click', () => {
+    socket.emit('show_answer');
+  });
+
+  // once server confirms the answer is revealed
+  socket.on('answer_revealed', data => {
+    // display the correct answer on host screen
+    $('#perQ').empty();
+    $('#perQ').append(
+      `<li class="list-group-item list-group-item-success" style="font-size:5rem;">${data.correct}</li>`
+    );
+    $('#host-results').show();
+
+    // disable Show Answer button, enable Next
+    $('#showAnswerBtn').prop('disabled', true);
+    $('#nextBtn').prop('disabled', false);
+  });
+
   // Show final top-10 when game_over arrives
   socket.on('game_over', data => {
     if (data.board) {

templates/player.html

@@ -3,12 +3,15 @@
 {% block content %}
 <style>
   .option.selected {
-    background-color: #0d6efd;  /* bootstrap “primary” bg */
+    background-color:rgb(110, 168, 255);  /* bootstrap “primary” bg */
-    color: white;
+    color: black;
   }
   .option.disabled {
-    background-color: #6c757d;  /* bootstrap “secondary” bg */
+    background-color:rgb(148, 148, 148);  /* bootstrap “secondary” bg */
-    color: white;
+    color: black;
+  }
+  .option.correct {
+    border: 5px solid #198754 !important;  /* bootstrap “success” green */
   }
 </style>
 <div class="container" id="player-app">
@@ -93,6 +96,30 @@
     renderOptions(data.options, false);
   });
 
+
+  // when the right answer is revealed
+  socket.on('answer_revealed', data => {
+    $('.option').each(function() {
+      const $opt = $(this);
+      if ($opt.text() === data.correct) {
+        // highlight as correct with green outline
+        $opt
+          .addClass('correct')
+          .removeClass('btn-outline-primary disabled')
+          .prop('disabled', true);
+      } else {
+        // any un-clicked options become permanently disabled
+        if (!$opt.hasClass('selected')) {
+          $opt
+            .addClass('disabled')
+            .removeClass('btn-outline-primary btn-primary')
+            .prop('disabled', true);
+        }
+      }
+    });
+  });
+
+
   // Handle answer clicks
   $(document).on('click', '.option', function() {
     const $all = $('.option');