Merge pull request #3 from LeafCreeper/copilot/fix-export-pdf-issue

Fix PDF export: MIME encoding for CJK filenames + apt cache in workflow

Author: LeafCreeper

.github/workflows/export.yml

@@ -35,6 +35,7 @@ jobs:
       - name: Install PDF dependencies
         if: inputs.export_pdf == true
         run: |
+          sudo apt-get update
           sudo apt-get install -y fonts-noto-cjk libpango-1.0-0 libcairo2
           pip install weasyprint
 

scripts/export_course.py

@@ -97,10 +97,10 @@ def _send_pdf_email(subject: str, pdf_bytes: bytes, filename: str) -> None:
     msg["From"] = formataddr(("iCourse Subscriber", config.SMTP_EMAIL))
     msg["To"] = config.RECEIVER_EMAIL
 
-    part = MIMEBase("application", "pdf")
+    part = MIMEBase("application", "pdf", name=filename)
     part.set_payload(pdf_bytes)
     encoders.encode_base64(part)
-    part.add_header("Content-Disposition", f'attachment; filename="{filename}"')
+    part.add_header("Content-Disposition", "attachment", filename=filename)
     msg.attach(part)
 
     with _smtp_connect() as server: