app/config.py

from functools import lru_cache
from typing import Optional

from pydantic import Field
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """Central configuration for the HuggingFace backend."""

    default_num_items: int = Field(10, env="POLYGRAPH_DEFAULT_NUM_ITEMS")
    skip_dub: bool = Field(False, env="POLYGRAPH_SKIP_DUB")
    template_root: str = Field("polygraph(email)/polygraph(email)", env="POLYGRAPH_TEMPLATE_DIR")
    template_archive_dir: str = Field("template_archive", env="POLYGRAPH_TEMPLATE_ARCHIVE")
    header_path: str = Field("header.png", env="POLYGRAPH_HEADER_PATH")
    header_link: str = Field("https://polymarket.com", env="POLYGRAPH_HEADER_LINK")
    supabase_url: Optional[str] = Field(None, env="SUPABASE_URL")
    supabase_service_key: Optional[str] = Field(None, env="SUPABASE_SERVICE_KEY")
    storage_prefix: str = Field("", env="STORAGE_PREFIX")
    openai_api_key: Optional[str] = Field(None, env="OPENAI_API_KEY")
    dub_workspace_id: str = Field("ws_cm7dm89q90000qmskmss62vla", env="DUB_WORKSPACE_ID")
    cors_origins: str = Field("*", env="CORS_ORIGINS")

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"
        case_sensitive = False
        extra = "ignore"


@lru_cache(maxsize=1)
def get_settings() -> Settings:
    """Return a cached instance so imports stay cheap."""
    return Settings()