from typing import Union
from pydantic import SecretStr, field_validator
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    # Supabase / PostgreSQL
    DATABASE_URL: str

    # JWT
    SECRET_KEY: SecretStr
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24  # 24 hours

    # App
    APP_NAME: str = "DocBoard"
    DEBUG: bool = False
    ALLOWED_ORIGINS: Union[list[str], str] = ["http://localhost:5173", "http://127.0.0.1:5173"]

    # Supabase
    SUPABASE_JWT_SECRET: SecretStr

    @field_validator("ALLOWED_ORIGINS", mode="before")
    @classmethod
    def assemble_cors_origins(cls, v: Union[str, list[str]]) -> list[str]:
        if isinstance(v, str) and not v.startswith("["):
            return [i.strip() for i in v.split(",")]
        elif isinstance(v, (list, str)):
            return v
        raise ValueError(v)

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


settings = Settings()