from datetime import UTC, datetime
from functools import lru_cache
from pathlib import Path

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

ENV_FILE = Path(__file__).parent / ".env"


class Settings(BaseSettings):
    APP_NAME: str = "sms-bot"
    API_ID: int
    API_HASH: str
    BOT_TOKEN: str
    STARTUP_DATETIME: datetime = datetime.now(UTC)
    model_config = SettingsConfigDict(env_file=ENV_FILE, extra="ignore")


class DatabaseConfig(BaseSettings):
    URL: MongoDsn = Field(alias="DATABASE_URL")
    NAME: str = "sms-bot"
    model_config = SettingsConfigDict(env_file=ENV_FILE, extra="ignore", env_prefix="DATABASE")


@lru_cache(maxsize=1)
def get_settings() -> Settings:
    return Settings()


@lru_cache(maxsize=1)
def get_database_settings() -> DatabaseConfig:
    return DatabaseConfig()