backend/app/config.py

import os
from pathlib import Path
from dotenv import load_dotenv
from pydantic import BaseModel

load_dotenv()


class Settings(BaseModel):
    VECTOR_DB_PATH: Path = Path(os.getenv("VECTOR_DB_PATH", "./storage/vector_db"))
    EMBEDDING_MODEL: str = os.getenv("EMBEDDING_MODEL", "all-MiniLM-L6-v2")
    CHUNK_SIZE: int = int(os.getenv("CHUNK_SIZE", "512"))
    CHUNK_OVERLAP: int = int(os.getenv("CHUNK_OVERLAP", "50"))
    TOP_K: int = int(os.getenv("TOP_K", "5"))

    GROQ_API_KEY: str = os.getenv("GROQ_API_KEY", "")
    SERPER_API_KEY: str = os.getenv("SERPER_API_KEY", "")
    TAVILY_API_KEY: str = os.getenv("TAVILY_API_KEY", "")

    ALLOWED_MODES: list = ["web", "pdf", "hybrid", "restricted"]

    UPLOAD_DIR: Path = Path(os.path.abspath("./storage/uploads"))

    MAX_FILE_SIZE: int = 10 * 1024 * 1024
    ALLOWED_FILE_TYPES: list = ["application/pdf"]

    GROQ_MODEL: str = os.getenv("GROQ_MODEL", "llama-3.3-70b-versatile")
    GROQ_MODEL_PRIMARY: str = os.getenv("GROQ_MODEL_PRIMARY", "llama-3.1-8b-instant")
    GROQ_MODEL_SECONDARY: str = os.getenv("GROQ_MODEL_SECONDARY", "mixtral-8x7b-32768")
    GROQ_MODEL_FALLBACK: str = os.getenv(
        "GROQ_MODEL_FALLBACK", "llama-3.3-70b-versatile"
    )
    MAX_TOKENS: int = int(os.getenv("MAX_TOKENS", "2048"))
    TEMPERATURE: float = float(os.getenv("TEMPERATURE", "0.1"))

    WEB_SEARCH_MAX_RESULTS: int = int(os.getenv("WEB_SEARCH_MAX_RESULTS", "5"))
    SIMILARITY_THRESHOLD: float = float(os.getenv("SIMILARITY_THRESHOLD", "0.7"))

    CORS_ORIGINS: list = [
        "http://localhost:3000",
        "http://localhost:5173",
        "https://yuvis-web-based-rag.hf.space",
        "https://*.hf.space",
    ]


settings = Settings()