Create app.py

app.py

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+import os
+from groq import Groq
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import FAISS
+from langchain.text_splitter import RecursiveCharacterTextSplitter
+from PyPDF2 import PdfReader
+import streamlit as st
+from tempfile import NamedTemporaryFile
+
+# Initialize Groq client
+client = Groq(api_key=os.environ.get("GROQ_API_KEY"))
+
+# Function to extract text from a PDF
+def extract_text_from_pdf(pdf_file_path):
+    pdf_reader = PdfReader(pdf_file_path)
+    text = ""
+    for page in pdf_reader.pages:
+        text += page.extract_text()
+    return text
+
+# Function to split text into chunks
+def chunk_text(text, chunk_size=500, chunk_overlap=50):
+    text_splitter = RecursiveCharacterTextSplitter(
+        chunk_size=chunk_size, chunk_overlap=chunk_overlap
+    )
+    return text_splitter.split_text(text)
+
+# Function to create embeddings and store them in FAISS
+def create_embeddings_and_store(chunks):
+    embeddings = HuggingFaceEmbeddings(model_name="sentence-transformers/all-MiniLM-L6-v2")
+    vector_db = FAISS.from_texts(chunks, embedding=embeddings)
+    return vector_db
+
+# Function to query the vector database and interact with Groq
+def query_vector_db(query, vector_db):
+    # Retrieve relevant documents
+    docs = vector_db.similarity_search(query, k=3)
+    context = "\n".join([doc.page_content for doc in docs])
+
+    # Interact with Groq API
+    chat_completion = client.chat.completions.create(
+        messages=[
+            {"role": "system", "content": f"Use the following context:\n{context}"},
+            {"role": "user", "content": query},
+        ],
+        model="llama3-8b-8192",
+    )
+    return chat_completion.choices[0].message.content
+
+# Streamlit app
+st.title("Interactive PDF Reader and Chat")
+
+# Upload PDF
+uploaded_file = st.file_uploader("Upload a PDF document", type=["pdf"])
+
+if uploaded_file:
+    with NamedTemporaryFile(delete=False, suffix=".pdf") as temp_file:
+        temp_file.write(uploaded_file.read())
+        pdf_path = temp_file.name
+
+    # Extract text, chunk it, and create embeddings
+    text = extract_text_from_pdf(pdf_path)
+    chunks = chunk_text(text)
+    vector_db = create_embeddings_and_store(chunks)
+
+    # State management for the chat
+    if "chat_history" not in st.session_state:
+        st.session_state.chat_history = []
+
+    # Display chat history
+    for i, chat in enumerate(st.session_state.chat_history):
+        st.write(f"**Query {i+1}:** {chat['query']}")
+        st.write(f"**Response:** {chat['response']}")
+        st.write("---")
+
+    # Add new query input dynamically
+    if "query_count" not in st.session_state:
+        st.session_state.query_count = 1
+
+    query_key = f"query_{st.session_state.query_count}"
+    user_query = st.text_input(f"Enter Query {st.session_state.query_count}:", key=query_key)
+
+    if user_query:
+        # Generate response
+        response = query_vector_db(user_query, vector_db)
+
+        # Append query and response to the chat history
+        st.session_state.chat_history.append({"query": user_query, "response": response})
+
+        # Increment query count for the next input box
+        st.session_state.query_count += 1
+
+        # Rerun to show the updated UI
+        st.experimental_rerun()