import importlib.machinery
import importlib.util
import sys
from pathlib import Path
from types import ModuleType
from types import SimpleNamespace


def _load_sessions_cli(monkeypatch):
    core_mod = ModuleType("core")
    database_mod = ModuleType("core.database")
    database_mod.SessionLocal = object
    database_mod.Session = object
    monkeypatch.setitem(sys.modules, "core", core_mod)
    monkeypatch.setitem(sys.modules, "core.database", database_mod)

    path = Path(__file__).resolve().parent.parent / "scripts" / "odysseus-sessions"
    loader = importlib.machinery.SourceFileLoader("odysseus_sessions_cli_under_test", str(path))
    spec = importlib.util.spec_from_loader(loader.name, loader)
    module = importlib.util.module_from_spec(spec)
    loader.exec_module(module)
    return module


def test_serialize_normalizes_numeric_counters(monkeypatch):
    cli = _load_sessions_cli(monkeypatch)
    session = SimpleNamespace(
        id="s1",
        name="chat",
        model="m",
        endpoint_url="",
        owner=None,
        folder=None,
        archived=False,
        rag=False,
        is_important=False,
        message_count="12",
        total_input_tokens="bad",
        total_output_tokens=None,
        last_accessed=None,
        created_at=None,
    )

    out = cli._serialize(session)

    assert out["message_count"] == 12
    assert out["total_input_tokens"] == 0
    assert out["total_output_tokens"] == 0