feat(list-generator): add logo to pdf header [32788f42]

list-generator/backend/app/services/pdf_generator.py

@@ -3,6 +3,16 @@ import os
 from jinja2 import Environment, FileSystemLoader
 from weasyprint import HTML
 import datetime
+import base64
+
+def get_logo_base64():
+    logo_path = os.path.join(os.path.dirname(__file__), "..", "..", "assets", "logo.png")
+    try:
+        with open(logo_path, "rb") as image_file:
+            return base64.b64encode(image_file.read()).decode('utf-8')
+    except FileNotFoundError:
+        print(f"Warning: Logo file not found at {logo_path}")
+        return None
 
 def generate_school_pdf(institution: str, date_info: str, list_type: str, students_csv_path: str, families_csv_path: str = None, output_dir: str = "/tmp") -> str:
     df = None
@@ -43,7 +53,16 @@ def generate_school_pdf(institution: str, date_info: str, list_type: str, studen
     env = Environment(loader=FileSystemLoader(template_dir))
     template = env.get_template("school_list.html")
     current_time = datetime.datetime.now().strftime("%d.%m.%Y %H:%M Uhr")
-    html_out = template.render(institution=institution, date_info=date_info, class_counts=class_counts, total_students=total_students, class_data=class_data, current_time=current_time)
+    logo_base64 = get_logo_base64()
+    html_out = template.render(
+        institution=institution,
+        date_info=date_info,
+        class_counts=class_counts,
+        total_students=total_students,
+        class_data=class_data,
+        current_time=current_time,
+        logo_base64=logo_base64
+    )
     clean_inst = institution.replace(" ", "_").replace("/", "-")
     time_str = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M")
     output_filename = f"Listen_{clean_inst}_{list_type}_{time_str}.pdf"