Add logger and env flag to enable/disable cookies

app.py

@@ -1,3 +1,4 @@
+import logging
 import gradio as gr
 from yt_dlp import YoutubeDL
 import os
@@ -7,6 +8,19 @@ import tempfile
 import shutil
 from pathlib import Path
 
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    handlers=[
+        logging.FileHandler('youtube_downloader.log'),
+        logging.StreamHandler()
+    ]
+)
+
+# Create logger instance
+logger = logging.getLogger('youtube_downloader')
+
 def cookies_to_env(cookie_file_path: str) -> str:
     """Convert cookie file content to environment variable format"""
     try:
@@ -93,6 +107,7 @@ def create_temp_cookie_file():
 def download_for_browser(url, mode='audio', quality='high'):
     if not url:
         return None, "Please enter a valid URL"
+    logger.info(f"Downloading {url} in {mode} mode with {quality} quality")
         
     # Create temporary directory that persists until file is served
     temp_dir = Path(tempfile.mkdtemp())
@@ -135,9 +150,14 @@ def download_for_browser(url, mode='audio', quality='high'):
             })
 
         # Add cookies
-        opts["cookiefile"] =  "firefox-cookies.txt" #create_temp_cookie_file() 
+        load_dotenv()
+        USE_FIREFOX_COOKIES = os.getenv("USE_FIREFOX_COOKIES", "False")
+        logger.info(f"Using Firefox cookies: {USE_FIREFOX_COOKIES}")
+        if USE_FIREFOX_COOKIES == "True":
+            opts["cookiefile"] =  "firefox-cookies.txt" #create_temp_cookie_file() 
 
         # Download file
+        logger.info(f"Downloading {url} with options: {opts}")
         with YoutubeDL(opts) as ydl:
             info = ydl.extract_info(url, download=True)
             
@@ -156,7 +176,13 @@ def download_for_browser(url, mode='audio', quality='high'):
     except Exception as e:
         if temp_dir.exists():
             shutil.rmtree(temp_dir)
-        return None, f"Error during download: {str(e)}"
+        # Return raw error message without formatting
+        error_msg = str(e)
+        if "ERROR: [youtube]" in error_msg:
+            # Extract everything after "ERROR: [youtube]"
+            error_msg = error_msg.split("ERROR: [youtube]")[1].strip()
+        logger.error(f"Download error: {error_msg}")
+        return None, error_msg
 
 def create_browser_ui():