app/core/llm_engine.py

# llm_engine.py

import google.generativeai as genai
from app.core.config import GEMINI_API_KEY

from langchain_google_genai import ChatGoogleGenerativeAI

# ✅ Configure Gemini client
genai.configure(api_key=GEMINI_API_KEY)


llm = ChatGoogleGenerativeAI(
    model="gemini-2.5-flash",
    google_api_key=GEMINI_API_KEY,
    temperature=0.2,
    max_output_tokens=500,
    convert_system_message_to_human=True
)