from dataclasses import dataclass, field
import os
from pathlib import Path

from dotenv import load_dotenv

backend_env_path = Path(__file__).resolve().parents[2] / ".env"
load_dotenv(dotenv_path=backend_env_path)


@dataclass(frozen=True)
class Settings:
    app_name: str = os.getenv("APP_NAME", "Zero Knowledge Platform API")
    mongo_uri: str = os.getenv("MONGODB_URI", "mongodb://localhost:27017")
    mongo_db_name: str = os.getenv("MONGODB_DB_NAME", "zero_knowledge_platform")
    jwt_secret: str = os.getenv("JWT_SECRET", "replace-with-a-long-random-secret")
    jwt_algorithm: str = os.getenv("JWT_ALGORITHM", "HS256")
    access_token_expire_minutes: int = int(os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES", "60"))
    cors_origins: list[str] = field(
        default_factory=lambda: [
            origin.strip()
            for origin in os.getenv(
                "CORS_ORIGINS",
                "http://localhost:5173,http://127.0.0.1:5173",
            ).split(",")
            if origin.strip()
        ]
    )


settings = Settings()