retriever.py

import datasets
from langchain.docstore.document import Document
from smolagents import Tool
from langchain_community.retrievers import BM25Retriever
from smolagents import CodeAgent, InferenceClientModel
import os
# from huggingface_hub import HfApi, InferenceClient
from dotenv import load_dotenv
# import os

load_dotenv()
# Load the Hugging Face API key from environment variables
api_key = os.getenv("HUGGINGFACE_API_KEY")


class GuestInfoRetrieverTool(Tool):
    name = "guest_info_retriever"
    description = "Retrieves detailed information about gala guests based on their name or relation."
    inputs = {
        "query": {
            "type": "string",
            "description": "The name or relation of the guest you want information about."
        }
    }
    output_type = "string"

    def __init__(self, docs):
        self.is_initialized = False
        self.retriever = BM25Retriever.from_documents(docs)

    def forward(self, query: str):
        results = self.retriever.get_relevant_documents(query)
        if results:
            return "\n\n".join([doc.page_content for doc in results[:3]])
        else:
            return "No matching guest information found."
        
def load_guest_dataset():
    # Load the dataset
    guest_dataset = datasets.load_dataset("agents-course/unit3-invitees", split="train")

    # Convert dataset entries into Document objects
    docs = [
        Document(
            page_content="\n".join([
                f"Name: {guest['name']}",
                f"Relation: {guest['relation']}",
                f"Description: {guest['description']}",
                f"Email: {guest['email']}"
            ]),
            metadata={"name": guest["name"]}
        )
        for guest in guest_dataset
    ]

    # Return the tool
    return GuestInfoRetrieverTool(docs)

# Initialize the tool
# guest_info_tool = GuestInfoRetrieverTool(docs)


# Initialize the Hugging Face model
model = InferenceClientModel(token=api_key)

# Create Alfred, our gala agent, with the guest info tool
# alfred = CodeAgent(tools=[guest_info_tool], model=model,
#                    )

# Example query Alfred might receive during the gala
# response = alfred.run("Tell me about our guest named 'Nhung ham'.")

# print("🎩 Alfred's Response:")
# print(response)