from pathlib import Path

import pytest

from engine.character import Character, ClothingPiece
from engine.defs import DefRegistry
from engine.ui import CharacterMenu

DEFS_DIR = Path(__file__).resolve().parent.parent / "resources" / "defs"


@pytest.fixture()
def registry():
    return DefRegistry.load(DEFS_DIR)


def make_human(registry, **kwargs) -> Character:
    return Character(species_id="human", default_body_parts=registry.new_default_body_parts("human"), **kwargs)


def test_defaults_to_the_bio_tab():
    menu = CharacterMenu()
    assert menu.active_tab == "bio"


def test_select_tab_switches_to_equipment():
    menu = CharacterMenu()
    menu.select_tab("equipment")
    assert menu.active_tab == "equipment"


def test_select_tab_ignores_unknown_tab_names():
    menu = CharacterMenu()
    menu.select_tab("inventory")  # not a real tab
    assert menu.active_tab == "bio"


def test_switching_tabs_closes_any_open_backpack_popup(registry):
    menu = CharacterMenu()
    character = make_human(registry, clothing=[ClothingPiece("back", "backpack_basic")])
    menu.right_click_equipment_slot("back", character, registry)
    assert menu.open_backpack_slot == "back"
    menu.select_tab("bio")
    assert menu.open_backpack_slot is None


def test_right_click_backpack_opens_popup(registry):
    menu = CharacterMenu()
    character = make_human(registry, clothing=[ClothingPiece("back", "backpack_basic")])
    opened = menu.right_click_equipment_slot("back", character, registry)
    assert opened is True
    assert menu.open_backpack_slot == "back"


def test_right_click_same_slot_again_closes_the_popup(registry):
    menu = CharacterMenu()
    character = make_human(registry, clothing=[ClothingPiece("back", "backpack_basic")])
    menu.right_click_equipment_slot("back", character, registry)
    closed = menu.right_click_equipment_slot("back", character, registry)
    assert closed is False
    assert menu.open_backpack_slot is None


def test_right_click_a_different_backpack_slot_switches_the_popup(registry):
    menu = CharacterMenu()
    character = make_human(
        registry,
        clothing=[ClothingPiece("back", "backpack_basic"), ClothingPiece("torso", "leather_jacket")],
    )
    # leather_jacket grants no inventory, so this is really just proving "back" is what opens
    menu.right_click_equipment_slot("back", character, registry)
    assert menu.open_backpack_slot == "back"


def test_right_click_non_inventory_item_does_not_open_a_popup(registry):
    menu = CharacterMenu()
    character = make_human(registry, clothing=[ClothingPiece("torso", "leather_jacket")])
    opened = menu.right_click_equipment_slot("torso", character, registry)
    assert opened is False
    assert menu.open_backpack_slot is None


def test_right_click_empty_slot_is_a_no_op(registry):
    menu = CharacterMenu()
    character = make_human(registry)
    opened = menu.right_click_equipment_slot("torso", character, registry)
    assert opened is False
    assert menu.open_backpack_slot is None


def test_close_backpack_popup_clears_it():
    menu = CharacterMenu(open_backpack_slot="back")
    menu.close_backpack_popup()
    assert menu.open_backpack_slot is None