config.py

"""Application configuration loaded from environment variables."""

import os
from pathlib import Path
from dotenv import load_dotenv

load_dotenv()

BASE_DIR = Path(__file__).resolve().parent

GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY", "")

EMBEDDING_MODEL = os.getenv("EMBEDDING_MODEL", "gemini-embedding-2-preview")
LLM_MODEL = os.getenv("LLM_MODEL", "gemini-3-flash-preview")

CHROMA_PERSIST_DIR = BASE_DIR / os.getenv("CHROMA_PERSIST_DIR", "chroma_db")
RAW_DATA_DIR = BASE_DIR / os.getenv("RAW_DATA_DIR", "raw_data")
CHROMA_COLLECTION = "rag_documents"

PROMPT_TEMPLATE_PATH = BASE_DIR / "prompt_template.txt"

DEFAULT_TOP_K = 10
DEFAULT_TEMPERATURE = 0.1