From e9609a3e3af5eb4e3047d197b8dc78ba166b57ab Mon Sep 17 00:00:00 2001
From: jamulix <fritzchem@linix.de>
Date: Tue, 21 Oct 2025 18:22:44 +0200
Subject: [PATCH] =?UTF-8?q?feat:=20F=C3=BCge=20Lektionsauswahl=20mit=20Tit?=
 =?UTF-8?q?eln=20hinzu?=
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Co-authored-by: aider (deepseek/deepseek-reasoner) <aider@aider.chat>
---
 app.py               | 36 ++++++++++++++++++++++++++++++++++++
 static/js/script.js  | 30 ++++++++++++++++++++++++++++++
 templates/index.html |  5 ++---
 3 files changed, 68 insertions(+), 3 deletions(-)

diff --git a/app.py b/app.py
index e8b18fe..011d53e 100644
--- a/app.py
+++ b/app.py
@@ -416,6 +416,42 @@ def next_text():
         print(f"Fehler in next_text: {e}")
         return jsonify({'error': 'Interner Serverfehler'}), 500
 
+@app.route('/set_lesson', methods=['POST'])
+def set_lesson():
+    """Setzt die aktuelle Lektion auf die ausgewählte"""
+    try:
+        data = request.get_json()
+        lesson_index = data.get('lesson_index')
+        
+        if lesson_index is None or not isinstance(lesson_index, int):
+            return jsonify({'error': 'Ungültiger Lektionsindex'}), 400
+        
+        if lesson_index < 0 or lesson_index >= len(lessons):
+            return jsonify({'error': 'Lektionsindex außerhalb des gültigen Bereichs'}), 400
+        
+        progress = Progress.query.first()
+        if not progress:
+            return jsonify({'error': 'Progress nicht gefunden'}), 400
+        
+        progress.current_text_index = lesson_index
+        progress.current_position = 0
+        progress.last_text = lessons[lesson_index]['text']
+        
+        db.session.commit()
+        
+        # Bestimme den Titel der neuen Lektion
+        new_lesson = lessons[lesson_index]
+        lesson_title = new_lesson.get('description', f"Lektion {lesson_index + 1}")
+        
+        return jsonify({
+            'text': new_lesson['text'],
+            'title': lesson_title
+        })
+        
+    except Exception as e:
+        print(f"Fehler in set_lesson: {e}")
+        return jsonify({'error': 'Interner Serverfehler'}), 500
+
 @app.route('/end_session', methods=['POST'])
 def end_session():
     """Beendet eine Tipp-Session und speichert Statistiken"""
diff --git a/static/js/script.js b/static/js/script.js
index dd0a128..d9257c3 100644
--- a/static/js/script.js
+++ b/static/js/script.js
@@ -48,6 +48,36 @@ document.addEventListener('DOMContentLoaded', function() {
         }
     });
     
+    // Event-Listener für Lektions-Buttons
+    document.querySelectorAll('.lesson-btn').forEach(button => {
+        button.addEventListener('click', function() {
+            const lessonIndex = parseInt(this.getAttribute('data-lesson-index'));
+            fetch('/set_lesson', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({
+                    lesson_index: lessonIndex
+                })
+            })
+            .then(response => response.json())
+            .then(data => {
+                if (data.error) {
+                    alert('Fehler: ' + data.error);
+                } else {
+                    currentText = data.text;
+                    document.getElementById('target-text').textContent = currentText;
+                    document.getElementById('lesson-title').textContent = data.title;
+                    userInput.value = '';
+                    userInput.focus();
+                    updateStatistics('', currentText);
+                }
+            })
+            .catch(error => console.error('Fehler:', error));
+        });
+    });
+
     // Nächste Zeile Button
     nextBtn.addEventListener('click', function() {
         fetch('/next_text', {
diff --git a/templates/index.html b/templates/index.html
index 6f9e3de..b95e52f 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -99,9 +99,8 @@
                                 {% for lesson in lessons %}
                                 <div class="col-md-3 mb-2">
                                     <button class="btn btn-outline-primary w-100 lesson-btn" 
-                                            data-lesson="{{ lesson.lesson }}" 
-                                            data-text="{{ lesson.text }}">
-                                        Lektion {{ lesson.lesson }}
+                                            data-lesson-index="{{ loop.index0 }}">
+                                        {{ lesson.get('description', 'Lektion ' ~ (loop.index0 + 1)) }}
                                     </button>
                                 </div>
                                 {% endfor %}