from functools import lru_cache

from pydantic import field_validator
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    app_env: str = "production"
    instance_url: str = "http://localhost"
    frontend_origin: str = "http://localhost"
    database_url: str = "postgresql+psycopg://nexapantry:nexapantry@localhost:5432/nexapantry"
    redis_url: str | None = None
    jwt_secret_key: str
    settings_secret_key: str
    cookie_secure: bool = True
    cors_origins: list[str] = ["http://localhost"]
    log_level: str = "INFO"
    default_timezone: str = "Europe/Vienna"
    daily_worker_interval_seconds: int = 300

    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")

    @field_validator("cors_origins", mode="before")
    @classmethod
    def parse_origins(cls, value: str | list[str]) -> list[str]:
        if isinstance(value, str):
            return [origin.strip() for origin in value.split(",") if origin.strip()]
        return value


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