from pathlib import Path

from engine.config import KeyBindings
from engine.controls_menu import ControlsMenu


def make_menu():
    bindings = KeyBindings.load(Path("/nonexistent"))
    return ControlsMenu(bindings)


def test_move_wraps_around_the_action_list():
    menu = make_menu()
    menu.move(-1)
    assert menu.selected_action() == menu.actions[-1]


def test_capture_key_is_ignored_until_rebind_begins():
    menu = make_menu()
    action = menu.selected_action()
    original = list(menu.keybindings.keys_for_action(action))
    applied = menu.capture_key("z")
    assert applied is False
    assert menu.keybindings.keys_for_action(action) == original


def test_begin_rebind_then_capture_key_rebinds_the_primary_key():
    menu = make_menu()
    menu.selected_index = menu.actions.index("leap")
    menu.begin_rebind()
    applied = menu.capture_key("j")
    assert applied is True
    assert menu.awaiting_key is False
    assert menu.keybindings.action_for_key("j") == "leap"
    assert menu.keybindings.action_for_key(" ") is None  # old primary key freed


def test_capture_key_rejects_reserved_menu_keys():
    menu = make_menu()
    menu.selected_index = menu.actions.index("leap")
    menu.begin_rebind()
    applied = menu.capture_key("Escape")
    assert applied is False
    assert menu.awaiting_key is True  # still waiting - player can try again


def test_cancel_rebind_stops_capturing():
    menu = make_menu()
    menu.begin_rebind()
    menu.cancel_rebind()
    assert menu.capture_key("z") is False


def test_rebind_steals_the_key_from_whichever_action_had_it():
    bindings = KeyBindings.load(Path("/nonexistent"))
    bindings.rebind("leap", "w")
    assert bindings.action_for_key("w") == "leap"
    assert "w" not in bindings.keys_for_action("move_up")


def test_save_and_reload_round_trips_a_rebind(tmp_path):
    bindings = KeyBindings.load(Path("/nonexistent"))
    bindings.rebind("leap", "j")
    path = tmp_path / "keybindings.conf"
    bindings.save(path)

    reloaded = KeyBindings.load(path)
    assert reloaded.action_for_key("j") == "leap"