updated the upload functionality to handle large files and added a new image file

app/utils/pptx_converter.py

@@ -9,12 +9,23 @@ The converted PDF is then processed by the main upload workflow for 4K image gen
 import os
 import subprocess
 import logging
+import signal
+import time
 
 # Set up logging
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
 
+def cleanup_libreoffice_processes():
+    """Clean up any hanging LibreOffice processes"""
+    try:
+        subprocess.run(['pkill', '-f', 'soffice'], capture_output=True, timeout=10)
+        time.sleep(1)  # Give processes time to terminate
+    except Exception as e:
+        logger.warning(f"Failed to cleanup LibreOffice processes: {e}")
+
+
 def pptx_to_pdf_libreoffice(pptx_path, output_dir):
     """
     Convert PPTX to PDF using LibreOffice for highest quality.
@@ -30,6 +41,9 @@ def pptx_to_pdf_libreoffice(pptx_path, output_dir):
         str: Path to the generated PDF file, or None if conversion failed
     """
     try:
+        # Clean up any existing LibreOffice processes
+        cleanup_libreoffice_processes()
+        
         # Ensure output directory exists
         os.makedirs(output_dir, exist_ok=True)
         
@@ -39,14 +53,19 @@ def pptx_to_pdf_libreoffice(pptx_path, output_dir):
             '--headless',
             '--convert-to', 'pdf',
             '--outdir', output_dir,
+            '--invisible',  # Run without any UI
+            '--nodefault',  # Don't start with default template
             pptx_path
         ]
         
         logger.info(f"Converting PPTX to PDF using LibreOffice: {pptx_path}")
-        result = subprocess.run(cmd, capture_output=True, text=True, timeout=120)
+        # Increase timeout to 300 seconds (5 minutes) for large presentations
+        result = subprocess.run(cmd, capture_output=True, text=True, timeout=300)
         
         if result.returncode != 0:
             logger.error(f"LibreOffice conversion failed: {result.stderr}")
+            logger.error(f"LibreOffice stdout: {result.stdout}")
+            cleanup_libreoffice_processes()  # Clean up on failure
             return None
         
         # Find the generated PDF file
@@ -55,16 +74,22 @@ def pptx_to_pdf_libreoffice(pptx_path, output_dir):
         
         if os.path.exists(pdf_path):
             logger.info(f"PDF conversion successful: {pdf_path}")
+            cleanup_libreoffice_processes()  # Clean up after success
             return pdf_path
         else:
             logger.error(f"PDF file not found after conversion: {pdf_path}")
+            cleanup_libreoffice_processes()  # Clean up on failure
             return None
             
     except subprocess.TimeoutExpired:
-        logger.error("LibreOffice conversion timed out (120s)")
+        logger.error("LibreOffice conversion timed out (300s)")
+        cleanup_libreoffice_processes()  # Clean up on timeout
         return None
     except Exception as e:
         logger.error(f"Error in PPTX to PDF conversion: {e}")
+        import traceback
+        logger.error(f"Traceback: {traceback.format_exc()}")
+        cleanup_libreoffice_processes()  # Clean up on error
         return None