"""Lazy OwsClient singleton for earnings_transfer."""

from __future__ import annotations

from owsclient import M2MTokenManager, OwsClient
from secrets_manager.lambda_ext import LambdaSecretsManager  # type: ignore

import config

_client: OwsClient | None = None


def get_ows_client() -> OwsClient:
    """Return the shared OwsClient, constructing it on first call."""
    global _client
    if _client is None:
        secrets_manager = LambdaSecretsManager(
            environment=config.ENVIRONMENT,
            service_name=config.APPLICATION_NAME,
        )
        m2m_token_manager = M2MTokenManager(
            secrets_manager=secrets_manager,
            environment=config.ENVIRONMENT,
            service_name=config.APPLICATION_NAME,
        )
        _client = OwsClient(
            environment=config.ENVIRONMENT,
            service_name=config.APPLICATION_NAME,
            m2m_token_manager=m2m_token_manager
            if config.ENVIRONMENT != config.DEV_ENVIRONMENT
            else None,
        )
    return _client