Update app.py

app.py

@@ -269,11 +269,29 @@ def create_pdf(summary_text, original_filename, summary_type):
     
     # 1. Définir des styles de paragraphes personnalisés
     styles = getSampleStyleSheet()
-    styles.add(ParagraphStyle(name='MainTitle', parent=styles['h1'], fontSize=18, spaceAfter=16, textColor=black, fontName='Helvetica-Bold'))
-    styles.add(ParagraphStyle(name='SectionTitle', parent=styles['h2'], fontSize=14, spaceAfter=12, textColor=navy, fontName='Helvetica-Bold'))
-    styles.add(ParagraphStyle(name='SubSectionTitle', parent=styles['Normal'], spaceAfter=10, fontName='Helvetica-Bold'))
-    styles.add(ParagraphStyle(name='BodyText', parent=styles['Normal'], spaceAfter=10, leading=14, alignment=4)) # Justifié
-    styles.add(ParagraphStyle(name='ListItem', parent=styles['Normal'], leftIndent=20, spaceAfter=5, leading=14))
+    
+    # Check if styles already exist before adding them
+    if 'MainTitle' not in styles:
+        styles.add(ParagraphStyle(name='MainTitle', parent=styles['h1'], 
+                                  fontSize=18, spaceAfter=16, textColor=black, 
+                                  fontName='Helvetica-Bold'))
+    
+    if 'SectionTitle' not in styles:
+        styles.add(ParagraphStyle(name='SectionTitle', parent=styles['h2'], 
+                                  fontSize=14, spaceAfter=12, textColor=navy, 
+                                  fontName='Helvetica-Bold'))
+    
+    if 'SubSectionTitle' not in styles:
+        styles.add(ParagraphStyle(name='SubSectionTitle', parent=styles['Normal'], 
+                                  spaceAfter=10, fontName='Helvetica-Bold'))
+    
+    if 'BodyText' not in styles:
+        styles.add(ParagraphStyle(name='BodyText', parent=styles['Normal'], 
+                                  spaceAfter=10, leading=14, alignment=4))  # Justifié
+    
+    if 'ListItem' not in styles:
+        styles.add(ParagraphStyle(name='ListItem', parent=styles['Normal'], 
+                                  leftIndent=20, spaceAfter=5, leading=14))
 
     story = []