from importlib.machinery import SourceFileLoader
from pathlib import Path


PROJECT_DIR = Path(__file__).resolve().parents[1]
SETTINGS_PATH = PROJECT_DIR / 'settings.py'


def load_settings():
    mod = SourceFileLoader('ibe_pp_settings', str(SETTINGS_PATH)).load_module()
    return mod


def test_session_configs_present_and_paths_exist():
    settings = load_settings()
    cfgs = {c['name']: c for c in settings.SESSION_CONFIGS}
    for name in ['classic_baseline', 'policy_nudges', 'guessing_game_demo', 'survey_biases_full']:
        assert name in cfgs
    # Check app folders exist for policy_nudges sequence
    apps = cfgs['policy_nudges']['app_sequence']
    for app in apps:
        if app in ('payment_info',):
            continue
        path = PROJECT_DIR / app
        assert path.exists(), f"App folder missing: {path}"