Update app.py

app.py

@@ -142,7 +142,6 @@ def apply_emoji_font(text, emoji_font):
 def markdown_to_pdf_content(markdown_text, render_with_bold, auto_bold_numbers, add_space_before_numbered, headings_to_fonts):
     lines = markdown_text.strip().split('\n')
     pdf_content = []
-    # Updated pattern to match both top-level (e.g., 4.) and sub-level (e.g., 4.1, 4.2) numbers
     number_pattern = re.compile(r'^\d+(\.\d+)*\.\s')
     heading_pattern = re.compile(r'^(#{1,4})\s+(.+)$')
     first_numbered_seen = False
@@ -185,11 +184,19 @@ def markdown_to_pdf_content(markdown_text, render_with_bold, auto_bold_numbers,
     total_lines = len(pdf_content)
     return pdf_content, total_lines
 
-def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_numbers, enlarge_numbered, num_columns, add_space_before_numbered, headings_to_fonts):
+def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_numbers, enlarge_numbered, num_columns, add_space_before_numbered, headings_to_fonts, doc_title):
     buffer = io.BytesIO()
     page_width = A4[0] * 2
     page_height = A4[1]
-    doc = SimpleDocTemplate(buffer, pagesize=(page_width, page_height), leftMargin=36, rightMargin=36, topMargin=36, bottomMargin=36)
+    doc = SimpleDocTemplate(
+        buffer,
+        pagesize=(page_width, page_height),
+        leftMargin=36,
+        rightMargin=36,
+        topMargin=36,
+        bottomMargin=36,
+        title=doc_title  # Set the document title in metadata
+    )
     styles = getSampleStyleSheet()
     spacer_height = 10
     pdf_content, total_lines = markdown_to_pdf_content(markdown_text, render_with_bold, auto_bold_numbers, add_space_before_numbered, headings_to_fonts)
@@ -592,7 +599,17 @@ with st.sidebar:
                 )
 
 with st.spinner("Generating PDF..."):
-    pdf_bytes = create_pdf(st.session_state.markdown_content, base_font_size, render_with_bold, auto_bold_numbers, enlarge_numbered, num_columns, add_space_before_numbered, headings_to_fonts)
+    pdf_bytes = create_pdf(
+        st.session_state.markdown_content,
+        base_font_size,
+        render_with_bold,
+        auto_bold_numbers,
+        enlarge_numbered,
+        num_columns,
+        add_space_before_numbered,
+        headings_to_fonts,
+        doc_title=selected_md if selected_md else "Untitled"
+    )
 
 with st.container():
     pdf_images = pdf_to_image(pdf_bytes)