Update app.py

app.py

@@ -44,29 +44,16 @@ FONT_DIR.mkdir(exist_ok=True)
 # --- Font & Emoji Handling ---
 
 def download_and_register_fonts():
-    """Downloads default fonts if needed, then finds and registers all .ttf files."""
+    """Finds and registers all .ttf files from the local 'fonts' directory."""
     print("--- Font Registration Process Starting ---")
-    fonts_to_download = {
-        "DejaVuSans.ttf": "https://github.com/dejavu-fonts/dejavu-fonts/blob/main/ttf/DejaVuSans.ttf?raw=true",
-        "NotoColorEmoji.ttf": "https://github.com/googlefonts/noto-emoji/blob/main/fonts/NotoColorEmoji.ttf?raw=true"
-    }
-    for filename, url in fonts_to_download.items():
-        font_path = FONT_DIR / filename
-        if not font_path.exists():
-            print(f"Downloading {filename}...")
-            try:
-                r = requests.get(url, allow_redirects=True, timeout=20)
-                r.raise_for_status()
-                with open(font_path, "wb") as f: f.write(r.content)
-                print(f"{filename} downloaded.")
-            except Exception as e:
-                print(f"Failed to download {filename}: {e}")
-
     font_names = []
     print(f"Scanning for fonts in: {FONT_DIR.absolute()}")
     font_files = list(FONT_DIR.glob("*.ttf"))
     print(f"Found {len(font_files)} .ttf files: {[f.name for f in font_files]}")
 
+    if not font_files:
+        print("WARNING: No .ttf files found in the 'fonts' directory. Please add font files to use them in the application.")
+
     for font_path in font_files:
         try:
             font_name = font_path.stem
@@ -79,7 +66,9 @@ def download_and_register_fonts():
             pdfmetrics.registerFont(TTFont(f"{font_name}-BoldItalic", str(font_path)))
             pdfmetrics.registerFontFamily(font_name, normal=font_name, bold=f"{font_name}-Bold", italic=f"{font_name}-Italic", boldItalic=f"{font_name}-BoldItalic")
 
-            if "emoji" not in font_name.lower():
+            # Exclude specific emoji fonts from the main selection list as they are handled automatically.
+            # We use a more general check to catch variants like NotoEmoji-Bold etc.
+            if "notoemoji" not in font_name.lower():
                 font_names.append(font_name)
         except Exception as e:
             print(f"Could not register font {font_path.name}: {e}")
@@ -89,12 +78,15 @@ def download_and_register_fonts():
 
 def apply_emoji_font(text: str) -> str:
     """Wraps emoji characters in a <font> tag to use the dedicated emoji font."""
+    # Assuming 'NotoColorEmoji-Regular' is the intended font for color emojis.
+    # The font name here must match the one registered from the filename.
+    emoji_font_to_use = "NotoColorEmoji-Regular"
     emoji_pattern = re.compile(f"([{re.escape(''.join(map(chr, range(0x1f600, 0x1f650))))}"
                                f"{re.escape(''.join(map(chr, range(0x1f300, 0x1f5ff))))}"
                                f"{re.escape(''.join(map(chr, range(0x1f900, 0x1f9ff))))}"
                                f"{re.escape(''.join(map(chr, range(0x2600, 0x26ff))))}"
                                f"{re.escape(''.join(map(chr, range(0x2700, 0x27bf))))}]+)")
-    return emoji_pattern.sub(fr'<font name="{EMOJI_FONT_NAME}">\1</font>', text)
+    return emoji_pattern.sub(fr'<font name="{emoji_font_to_use}">\1</font>', text)
 
 
 # --- PDF Generation & Handling ---
@@ -226,10 +218,23 @@ with gr.Blocks(theme=gr.themes.Soft(), title="Advanced PDF Generator") as demo:
         """Function to run on app load to generate a sample PDF."""
         print("Running initial demo generation...")
         # Create a dummy file object for Gradio
-        with open(CWD / "sample.md", "rb") as f:
+        sample_md_path = CWD / "sample.md"
+        if not sample_md_path.exists():
+            return [], "Sample.md not found.", []
+
+        with open(sample_md_path, "rb") as f:
             sample_bytes = f.read()
         
-        demo_files = [gr.processing_utils.SavedFile(name=str(CWD / "sample.md"), data=sample_bytes, is_file=True)]
+        # This part is tricky with Gradio's file handling on load. 
+        # For simplicity, we'll pass the path and have the API function handle it.
+        # A more robust solution might involve writing to a temp file.
+        # This is a conceptual fix for the demo.
+        class TempFile:
+            def __init__(self, name):
+                self.name = name
+        
+        demo_files = [TempFile(name=str(sample_md_path))]
+        
         previews, logs, files = generate_pdfs_api(demo_files, ["A4 Portrait"], [AVAILABLE_FONTS[0]] if AVAILABLE_FONTS else [], 1)
         return previews, logs, files