"""Tests for discovery tools — requires a running session bus."""

from mcdbus._bus import BusManager, call_bus_method


async def test_list_names_raw(bus_manager: BusManager):
    """Verify we can list service names on the session bus via raw D-Bus call."""
    bus = await bus_manager.get_bus("session")
    result = await call_bus_method(
        bus,
        destination="org.freedesktop.DBus",
        path="/org/freedesktop/DBus",
        interface="org.freedesktop.DBus",
        member="ListNames",
    )
    names = result[0]
    assert isinstance(names, list)
    assert "org.freedesktop.DBus" in names
    assert len(names) > 1


async def test_introspect_raw(bus_manager: BusManager):
    """Verify introspection returns parseable interface data."""
    bus = await bus_manager.get_bus("session")
    node = await bus.introspect("org.freedesktop.DBus", "/org/freedesktop/DBus")
    iface_names = [i.name for i in node.interfaces]
    assert "org.freedesktop.DBus" in iface_names
    # Should have standard interfaces too
    assert "org.freedesktop.DBus.Introspectable" in iface_names


async def test_introspect_methods(bus_manager: BusManager):
    """Verify we can see method signatures from introspection."""
    bus = await bus_manager.get_bus("session")
    node = await bus.introspect("org.freedesktop.DBus", "/org/freedesktop/DBus")
    dbus_iface = next(i for i in node.interfaces if i.name == "org.freedesktop.DBus")
    method_names = [m.name for m in dbus_iface.methods]
    assert "ListNames" in method_names
    assert "GetId" in method_names


async def test_walk_object_tree(bus_manager: BusManager):
    """Walk the DBus daemon object tree — should have at least root."""
    bus = await bus_manager.get_bus("session")
    node = await bus.introspect("org.freedesktop.DBus", "/")

    # The root should exist and may have child nodes
    assert node is not None
    # DBus daemon typically has /org/freedesktop/DBus
    child_names = [c.name for c in node.nodes]
    assert len(child_names) >= 0  # May be empty at root, that's ok


async def test_list_names_filters_unique(bus_manager: BusManager):
    """Verify unique names (:1.xx) can be filtered out."""
    bus = await bus_manager.get_bus("session")
    result = await call_bus_method(
        bus,
        destination="org.freedesktop.DBus",
        path="/org/freedesktop/DBus",
        interface="org.freedesktop.DBus",
        member="ListNames",
    )
    all_names = result[0]
    well_known = [n for n in all_names if not n.startswith(":")]
    unique = [n for n in all_names if n.startswith(":")]

    assert len(well_known) > 0
    assert len(unique) > 0  # Should have at least one unique connection
    assert "org.freedesktop.DBus" in well_known