Update app.py

app.py

@@ -1,27 +1,47 @@
 import gradio as gr
 import PyPDF2
 import io
+import re
 import json
-from dotenv import load_dotenv
+import os  # Added missing import
+import gc
 from huggingface_hub import login
+from dotenv import load_dotenv
 
 # --- Configuration --- #
 load_dotenv()
 login(token=os.getenv("HF_TOKEN"))
 
 def extract_text_from_pdf(pdf_file):
-    """Improved PDF text extraction with error handling"""
+    """Extract text from PDF with detailed error handling"""
+    if pdf_file is None:
+        raise ValueError("No PDF file uploaded")
+    
+    # Handle both file path and bytes input
+    if isinstance(pdf_file, str):
+        with open(pdf_file, 'rb') as f:
+            file_bytes = f.read()
+    elif isinstance(pdf_file, bytes):
+        file_bytes = pdf_file
+    else:
+        raise TypeError(f"Expected file path or bytes, got {type(pdf_file)}")
+    
     try:
-        if isinstance(pdf_file, bytes):
-            file_bytes = pdf_file
-        else:
-            raise ValueError("Invalid file format")
-            
         pdf_reader = PyPDF2.PdfReader(io.BytesIO(file_bytes))
-        text = "\n".join(page.extract_text() for page in pdf_reader.pages if page.extract_text())
-        return text[:15000]  # Increased character limit
+        if len(pdf_reader.pages) == 0:
+            raise ValueError("PDF has no pages")
+        
+        text = "\n".join(page.extract_text() for page in pdf_reader.pages)
+        if text is None or text.strip() == "":
+            raise ValueError("No text extracted from PDF (possibly image-based or empty)")
+        
+        return text[:10000]  # Limit to first 10,000 characters
+    except PyPDF2.errors.PdfReadError as e:
+        raise Exception(f"PDF read error: {str(e)}")
     except Exception as e:
-        raise Exception(f"PDF processing error: {str(e)}")
+        raise Exception(f"Extraction error: {str(e)}")
+    finally:
+        gc.collect()
 
 def generate_ai_prompt(resume_text, job_desc=None):
     """Generates smart analysis prompt for AI"""