Update app.py

app.py

@@ -1,8 +1,25 @@
 import streamlit as st
-# Other imports remain the same
+from dotenv import load_dotenv
+import streamlit as st
+from PyPDF2 import PdfReader
+from langchain.text_splitter import CharacterTextSplitter
+from langchain.embeddings.openai import OpenAIEmbeddings
+from langchain.vectorstores import FAISS
+from langchain.chains.question_answering import load_qa_chain
+from langchain.llms import OpenAI
+import time
+import logging
+import os
 
 def process_pdf(pdf):
-    # Function remains the same
+    start_time = time.time()
+    pdf_reader = PdfReader(pdf)
+    text = ""
+    for page in pdf_reader.pages:
+        text += page.extract_text() or ""
+    end_time = time.time()
+    logging.info(f"Processed PDF in {end_time - start_time} seconds")
+    return text
 
 def display_chat_history():
     history_text = ""
@@ -46,4 +63,4 @@ def main():
 # Logging and exception handling remain the same
 
 if __name__ == "__main__":
-    main()
+    main()