from functools import lru_cache

from pydantic import AnyHttpUrl, Field, field_validator
from pydantic_settings import BaseSettings, SettingsConfigDict


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

    project_name: str = "NexaFabric"
    environment: str = "development"
    api_host: str = "0.0.0.0"
    api_port: int = 8000
    database_url: str = "sqlite:///./nexafabric.db"
    redis_url: str = "redis://localhost:6379/0"
    jwt_secret: str = Field(default="dev-only-change-me")
    jwt_access_token_minutes: int = 15
    jwt_refresh_token_days: int = 14
    token_encryption_key: str = "dev-only-change-me"
    demo_admin_password: str = "ChangeMe_UseEnvInstead"
    seed_demo_data: bool = False
    cors_origins: list[AnyHttpUrl] | list[str] = ["http://localhost:5173", "http://localhost:8080"]

    @field_validator("cors_origins", mode="before")
    @classmethod
    def parse_cors_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()