from pydantic_settings import BaseSettings
from functools import lru_cache


class Settings(BaseSettings):
    APP_NAME: str = "CMDB"
    APP_VERSION: str = "1.0.0"
    DEBUG: bool = False

    DATABASE_URL: str = "postgresql+asyncpg://cmdb:cmdb_secret@localhost:5432/cmdb"
    DATABASE_POOL_SIZE: int = 20
    DATABASE_MAX_OVERFLOW: int = 10

    JWT_SECRET: str = "CHANGE-ME-IN-PRODUCTION-use-openssl-rand-hex-32"
    JWT_ALGORITHM: str = "HS256"
    JWT_EXPIRATION_MINUTES: int = 60

    CORS_ORIGINS: list[str] = ["http://localhost:3000", "http://localhost:5173"]

    RATE_LIMIT_PER_MINUTE: int = 120

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"


@lru_cache()
def get_settings() -> Settings:
    return Settings()