from functools import lru_cache

from pydantic import Field, computed_field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        env_file = ".env",
        env_file_encoding = "utf-8"
    )

    # CORS as a private field with a string type:
    cors_origins_raw: str = Field(
        default="http://localhost:5173",
        alias="cors_origins"
    )

    @computed_field
    @property
    def cors_origins(self) -> list[str]:
        """Converts a string into list."""
        if isinstance(self.cors_origins_raw, list):
            return self.cors_origins_raw
        return [
            origin.strip()
            for origin in self.cors_origins_raw.split(",")
            if origin.strip()
        ]

    # Autres configurations futures
    app_name: str = "Dough Calculator"
    debug: bool = False


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