Update app.py

app.py

@@ -82,7 +82,11 @@ async def generate_audio(text, voice, filename):
 def detect_and_convert_links(text):
     # Convert Markdown links [text](url) to HTML <a> tags
     md_link_pattern = re.compile(r'\[(.*?)\]\((https?://[^\s\[\]()<>{}]+)\)')
-    text = md_link_pattern.sub(r'<a href="\2">\1</a>', text)
+    def replace_md_link(match):
+        text = match.group(1)
+        url = match.group(2)
+        return f'<a href="{url}" color="blue">{text}</a>'
+    text = md_link_pattern.sub(replace_md_link, text)
     
     # Convert plain URLs to HTML <a> tags, avoiding already tagged links
     url_pattern = re.compile(
@@ -91,14 +95,14 @@ def detect_and_convert_links(text):
     )
     def replace_url(match):
         url = match.group(1)
-        return f'<a href="{url}">{url}</a>'
+        return f'<a href="{url}" color="blue">{url}</a>'
     
     text = url_pattern.sub(replace_url, text)
     return text
 
 def apply_emoji_font(text, emoji_font):
     # Preserve links and bold tags
-    link_pattern = re.compile(r'(<a\s+href="[^"]+">.*?</a>)')
+    link_pattern = re.compile(r'(<a\s+href="[^"]+"[^>]*>.*?</a>)')
     bold_pattern = re.compile(r'(<b>.*?</b>)')
     
     # Split text around links and bold tags
@@ -149,11 +153,11 @@ def apply_emoji_font(text, emoji_font):
             for match in emoji_pattern.finditer(content):
                 start, end = match.span()
                 if last_pos < start:
-                    parts.append(f'<font face="NotoEmoji-Bold">{content[last_pos:start]}</font>')
+                    parts.append(f'<font face="DejaVuSans">{content[last_pos:start]}</font>')
                 parts.append(replace_emoji(match))
                 last_pos = end
             if last_pos < len(content):
-                parts.append(f'<font face="NotoEmoji-Bold">{content[last_pos:]}</font>')
+                parts.append(f'<font face="DejaVuSans">{content[last_pos:]}</font>')
             result.append(''.join(parts))
         else:
             # Keep links and bold tags unchanged
@@ -224,9 +228,7 @@ def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_number
         selected_font_path = next((f for f in available_font_files if "NotoEmoji-Bold" in f), None)
         if selected_font_path:
             pdfmetrics.registerFont(TTFont("NotoEmoji-Bold", selected_font_path))
-        else:
-            st.error("NotoEmoji-Bold font not found.")
-            return
+        pdfmetrics.registerFont(TTFont("DejaVuSans", "DejaVuSans.ttf"))
     except Exception as e:
         st.error(f"Font registration error: {e}")
         return
@@ -250,7 +252,7 @@ def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_number
         adjusted_font_size = int(col_width / (avg_line_chars / 10))
         adjusted_font_size = max(min_font_size, adjusted_font_size)
     item_style = ParagraphStyle(
-        'ItemStyle', parent=styles['Normal'], fontName="NotoEmoji-Bold",
+        'ItemStyle', parent=styles['Normal'], fontName="DejaVuSans",
         fontSize=adjusted_font_size, leading=adjusted_font_size * 1.15, spaceAfter=1,
         linkUnderline=True
     )
@@ -261,7 +263,7 @@ def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_number
         linkUnderline=True
     )
     section_style = ParagraphStyle(
-        'SectionStyle', parent=styles['Heading2'], fontName="NotoEmoji-Bold",
+        'SectionStyle', parent=styles['Heading2'], fontName="DejaVuSans",
         textColor=colors.darkblue, fontSize=adjusted_font_size * 1.1, leading=adjusted_font_size * 1.32, spaceAfter=2,
         linkUnderline=True
     )
@@ -287,7 +289,7 @@ def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_number
                     heading_style = ParagraphStyle(
                         f'Heading{level}Style', 
                         parent=styles['Heading1'],
-                        fontName="NotoEmoji-Bold",
+                        fontName="DejaVuSans",
                         textColor=colors.darkblue if level == 1 else (colors.black if level > 2 else colors.blue),
                         fontSize=adjusted_font_size * (1.6 - (level-1)*0.15),
                         leading=adjusted_font_size * (1.8 - (level-1)*0.15),
@@ -303,9 +305,9 @@ def create_pdf(markdown_text, base_font_size, render_with_bold, auto_bold_number
                     else:
                         column_cells[col_idx].append(Paragraph(apply_emoji_font(content, "NotoEmoji-Bold"), section_style))
                 else:
-                    column_cells[col_idx].append(Paragraph(apply_emoji_font(item, "NotoEmoji-Bold"), item_style))
+                    column_cells[col_idx].append(Paragraph(apply_emoji_font(item, "DejaVuSans"), item_style))
             else:
-                column_cells[col_idx].append(Paragraph(apply_emoji_font(str(item), "NotoEmoji-Bold"), item_style))
+                column_cells[col_idx].append(Paragraph(apply_emoji_font(str(item), "DejaVuSans"), item_style))
     max_cells = max(len(cells) for cells in column_cells) if column_cells else 0
     for cells in column_cells:
         cells.extend([Paragraph("", item_style)] * (max_cells - len(cells)))