from pathlib import Path

import hermes_mcp.config as config
from hermes_mcp.config import _load_env_file


def test_env_example_includes_retention_hours_setting():
    env_example = Path(__file__).resolve().parents[1] / ".env.example"
    values = _load_env_file(env_example)
    assert values["HERMES_RETENTION_HOURS"] == "24"


def test_load_config_uses_hours_and_legacy_days_fallback(monkeypatch):
    monkeypatch.setattr(config, "_load_env_file", lambda path=config.ENV_PATH: {})
    monkeypatch.delenv("HERMES_RETENTION_HOURS", raising=False)
    monkeypatch.delenv("HERMES_RETENTION_DAYS", raising=False)
    cfg = config.load_config()
    assert cfg.retention_hours == 24

    monkeypatch.setenv("HERMES_RETENTION_HOURS", "12")
    cfg = config.load_config()
    assert cfg.retention_hours == 12

    monkeypatch.delenv("HERMES_RETENTION_HOURS", raising=False)
    monkeypatch.setenv("HERMES_RETENTION_DAYS", "2")
    cfg = config.load_config()
    assert cfg.retention_hours == 48