backend/app/core/config.py

"""Application configuration management"""

from pydantic_settings import BaseSettings
from functools import lru_cache
import os


class Settings(BaseSettings):
    """Application settings loaded from environment variables"""

    # Environment
    environment: str = "development"
    debug: bool = False
    log_level: str = "INFO"

    # API Keys
    groq_api_key: str = ""

    # Database
    database_url: str = "sqlite:///./data/ragapp.db"
    vector_db_type: str = "chroma"
    chroma_storage_path: str = "./data/chroma_data"

    # Vector DB Configuration
    pinecone_api_key: str = ""
    pinecone_environment: str = ""
    weaviate_url: str = "http://localhost:8080"
    weaviate_api_key: str = ""
    qdrant_url: str = "http://localhost:6333"
    qdrant_api_key: str = ""

    # Service Configuration
    default_model: str = "llama-3.1-8b-instant"
    default_embedding_model: str = "all-MiniLM-L6-v2"
    default_tokenizer: str = "tiktoken"
    chunk_size: int = 512
    chunk_overlap: int = 50
    retrieval_top_k: int = 5
    generation_temperature: float = 0.7

    # Security
    secret_key: str = "your-secret-key-change-in-production"
    jwt_algorithm: str = "HS256"
    jwt_expiration_hours: int = 24

    # CORS
    frontend_url: str = "http://localhost:3000"

    # File Upload
    upload_dir: str = "./data/uploads"
    max_file_size: int = 52428800

    # Logging
    log_file: str = "./logs/ragapp.log"

    class Config:
        env_file = ".env"
        case_sensitive = False

    def __init__(self, **data):
        super().__init__(**data)
        os.makedirs(self.upload_dir, exist_ok=True)
        os.makedirs(self.chroma_storage_path, exist_ok=True)
        os.makedirs(os.path.dirname(self.log_file), exist_ok=True)


@lru_cache()
def get_settings() -> Settings:
    """Get cached settings instance"""
    return Settings()