feat: update to support folder inside content folder to easy to manage

elemes.sh

@@ -43,8 +43,8 @@ init)
     echo "✅ [Skip] Folder content/ sudah ada"
   else
     mkdir -p "$PARENT_DIR/content"
-    cp -n "$EXAMPLES_DIR/content/"*.md "$PARENT_DIR/content/"
+    cp -rn "$EXAMPLES_DIR/content/"* "$PARENT_DIR/content/"
-    echo "📁 [Buat] Folder content/  ($(ls "$PARENT_DIR/content/"*.md 2>/dev/null | wc -l) materi contoh ditambahkan)"
+    echo "📁 [Buat] Folder content/  ($(find "$PARENT_DIR/content/" -name "*.md" 2>/dev/null | wc -l) materi contoh ditambahkan)"
   fi
 
   # assets/

examples/content/dasar/test_slides.md

@@ -0,0 +1,26 @@
+# Test Slide Feature
+
+Selamat datang di materi uji coba fitur slide.
+
+---slide-start---
+# Slide 1: Pengenalan
+Ini adalah konten slide pertama.
+---
+# Slide 2: Keuntungan
+- Mudah digunakan
+- Berbasis Markdown
+- Interaktif
+---
+# Slide 3: Selesai
+Terima kasih telah mencoba!
+---slide-end---
+
+Setelah slide di atas, ini adalah konten materi biasa.
+
+```c
+#include <stdio.h>
+int main() {
+    printf("Uji coba slide\n");
+    return 0;
+}
+```

examples/content/home.md

@@ -18,15 +18,16 @@ Semua materi bisa dikerjakan langsung di browser!
 3. [Uji Coba Flowchart](lesson/flowchart_test.md)
 4. [Uji Coba Kuis](lesson/quiz_test.md)
 5. [Uji Coba LaTeX](lesson/latex_test.md)
+6. [Uji Coba Slide](lesson/test_slides.md)
 
-### Elektronika (Hybrid)
+### Elektronika & Sirkuit (Hybrid)
-6. [Rangkaian Dasar](lesson/rangkaian_dasar.md)
+7. [Rangkaian Dasar](lesson/rangkaian_dasar.md)
 
-### Arduino (Velxio)
+### Arduino & Robotika (Velxio)
-7. [LED Blink](lesson/led_blink_arduino.md)
+8. [LED Blink](lesson/led_blink_arduino.md)
-8. [Hello Serial](lesson/hello_serial_arduino.md)
+9. [Hello Serial](lesson/hello_serial_arduino.md)
-9. [Button Input](lesson/button_input_arduino.md)
+10. [Button Input](lesson/button_input_arduino.md)
-10. [Traffic Light](lesson/traffic_light_arduino.md)
+11. [Traffic Light](lesson/traffic_light_arduino.md)
 
 ----Available_Lessons----
 
@@ -34,8 +35,10 @@ Semua materi bisa dikerjakan langsung di browser!
 2. [Variabel](lesson/variabel.md)
 3. [Uji Coba Flowchart](lesson/flowchart_test.md)
 4. [Uji Coba Kuis](lesson/quiz_test.md)
-5. [Rangkaian Dasar](lesson/rangkaian_dasar.md)
+5. [Uji Coba LaTeX](lesson/latex_test.md)
-6. [LED Blink](lesson/led_blink_arduino.md)
+6. [Uji Coba Slide](lesson/test_slides.md)
-7. [Hello Serial](lesson/hello_serial_arduino.md)
+7. [Rangkaian Dasar](lesson/rangkaian_dasar.md)
-8. [Button Input](lesson/button_input_arduino.md)
+8. [LED Blink](lesson/led_blink_arduino.md)
-9. [Traffic Light](lesson/traffic_light_arduino.md)
+9. [Hello Serial](lesson/hello_serial_arduino.md)
+10. [Button Input](lesson/button_input_arduino.md)
+11. [Traffic Light](lesson/traffic_light_arduino.md)

routes/lessons.py

@@ -13,6 +13,7 @@ from services.lesson_service import (
     get_ordered_lessons_with_learning_objectives,
     render_markdown_content,
     render_home_content,
+    find_lesson_file,
 )
 from services.token_service import get_student_progress
 
@@ -52,10 +53,9 @@ def api_lessons():
 @lessons_bp.route('/lesson/<filename>.json')
 def api_lesson(filename):
     """Return single lesson data as JSON."""
-    safe_filename = secure_filename(filename)
+    full_filename = filename if filename.endswith('.md') else f'{filename}.md'
-    full_filename = safe_filename if safe_filename.endswith('.md') else f'{safe_filename}.md'
+    file_path = find_lesson_file(full_filename)
-    file_path = os.path.join(CONTENT_DIR, full_filename)
+    if not file_path:
-    if not os.path.exists(file_path):
         return jsonify({'error': 'Lesson not found'}), 404
 
     parsed_data = render_markdown_content(file_path)
@@ -215,9 +215,8 @@ def api_lesson(filename):
 @lessons_bp.route('/get-key-text/<filename>')
 def get_key_text(filename):
     """Get the key text for a specific lesson."""
-    safe_filename = secure_filename(filename)
+    file_path = find_lesson_file(filename)
-    file_path = os.path.join(CONTENT_DIR, safe_filename)
+    if not file_path:
-    if not os.path.exists(file_path):
         return jsonify({'success': False, 'error': 'Lesson not found'}), 404
 
     parsed_data = render_markdown_content(file_path)

services/lesson_service.py

@@ -43,6 +43,19 @@ def _parse_lesson_links(home_content):
 # Lesson listing
 # ---------------------------------------------------------------------------
 
+@lru_cache(maxsize=128)
+def find_lesson_file(filename):
+    """Recursively search for filename in CONTENT_DIR and return its full path."""
+    # Security: Prevent directory traversal
+    if '/' in filename or '\\' in filename:
+        return None
+        
+    for root, _, files in os.walk(CONTENT_DIR):
+        if filename in files:
+            return os.path.join(root, filename)
+    return None
+
+
 @lru_cache(maxsize=32)
 def get_lessons():
     """Get lessons from the Available_Lessons section in home.md."""
@@ -52,8 +65,8 @@ def get_lessons():
         return lessons
 
     for link_text, filename in _parse_lesson_links(home_content):
-        file_path = os.path.join(CONTENT_DIR, filename)
+        file_path = find_lesson_file(filename)
-        if not os.path.exists(file_path):
+        if not file_path:
             continue
 
         with open(file_path, 'r', encoding='utf-8') as f:
@@ -92,8 +105,8 @@ def get_lesson_names():
 
     names = []
     for _link_text, filename in _parse_lesson_links(home_content):
-        file_path = os.path.join(CONTENT_DIR, filename)
+        file_path = find_lesson_file(filename)
-        if os.path.exists(file_path):
+        if file_path:
             names.append(filename.replace('.md', ''))
     return names
 
@@ -107,8 +120,8 @@ def get_lessons_with_learning_objectives():
         return lessons
 
     for link_text, filename in _parse_lesson_links(home_content):
-        file_path = os.path.join(CONTENT_DIR, filename)
+        file_path = find_lesson_file(filename)
-        if not os.path.exists(file_path):
+        if not file_path:
             continue
 
         with open(file_path, 'r', encoding='utf-8') as f: