"""Boîte de collision d'un objet de scène (voir
screens/rendering/collision_settings.py, static/js/play/conditions.js::
elementsOverlap pour son usage au jeu, testé côté client dans
static/js/play/__tests__/conditions.test.js) : posée AUTOMATIQUEMENT sur
CHAQUE objet (= sa propre boîte, tant que rien n'est réglé), activable/
désactivable, taille/forme/décalage configurables."""
import re

import screens


def _create_jeu2d_game(client, tmp_game_slug_cleanup, name="pytest_collision"):
    resp = client.post("/games/new", data={"name": name}, follow_redirects=False)
    slug = tmp_game_slug_cleanup(resp.headers["Location"].rstrip("/").split("/")[-1])
    screen_id = screens.create_screen(slug, "Scène 1", kind="jeu_2d")
    return slug, screen_id


def _add_decor(client, slug, screen_id):
    resp = client.post(f"/game/{slug}/screens/{screen_id}/scene-objects/add", data={"kind": "decor"}, follow_redirects=False)
    assert resp.status_code == 302, resp.data
    return int(re.search(r"selected=(\d+)", resp.headers["Location"]).group(1))


def test_freshly_placed_object_defaults_to_its_own_box_as_collision(client, tmp_game_slug_cleanup):
    """Sans réglage explicite, la boîte de collision EST la boîte de
    l'objet (comportement inchangé pour tout objet déjà posé — la
    collision se comportait déjà comme ça, implicitement, avant l'ajout
    de ce réglage)."""
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    obj_id = _add_decor(client, slug, screen_id)
    obj = screens.get_scene_object(slug, obj_id)
    collision = screens.resolve_collision_settings(obj)
    assert collision["enabled"] is True
    assert collision["shape"] == "rectangle"
    assert collision["width"] == obj["width"]
    assert collision["height"] == obj["height"]
    assert collision["offset_x"] == 0 and collision["offset_y"] == 0


def test_collision_route_persists_a_custom_box(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    obj_id = _add_decor(client, slug, screen_id)

    resp = client.post(
        f"/game/{slug}/scene-objects/{obj_id}/collision",
        data='{"enabled": true, "shape": "cercle", "width": 30, "height": 30, "offset_x": 5, "offset_y": -5}',
        content_type="application/json",
    )
    assert resp.status_code == 200
    assert resp.get_json()["collision"] == {
        "enabled": True, "shape": "cercle", "width": 30.0, "height": 30.0, "offset_x": 5.0, "offset_y": -5.0,
    }
    obj = screens.get_scene_object(slug, obj_id)
    assert screens.resolve_collision_settings(obj)["shape"] == "cercle"


def test_collision_route_can_disable_the_box_entirely(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    obj_id = _add_decor(client, slug, screen_id)
    resp = client.post(
        f"/game/{slug}/scene-objects/{obj_id}/collision",
        data='{"enabled": false}', content_type="application/json",
    )
    assert resp.get_json()["collision"]["enabled"] is False


def test_collision_route_rejects_an_unknown_shape_and_falls_back_to_rectangle(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    obj_id = _add_decor(client, slug, screen_id)
    resp = client.post(
        f"/game/{slug}/scene-objects/{obj_id}/collision",
        data='{"shape": "triangle"}', content_type="application/json",
    )
    assert resp.get_json()["collision"]["shape"] == "rectangle"


def test_collision_route_ignores_invalid_size_values(client, tmp_game_slug_cleanup):
    """Une largeur/hauteur invalide (texte, vide) ne plante pas — retombe
    sur la taille de l'objet, comme si rien n'avait été réglé."""
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    obj_id = _add_decor(client, slug, screen_id)
    resp = client.post(
        f"/game/{slug}/scene-objects/{obj_id}/collision",
        data='{"width": "pas-un-nombre", "height": ""}', content_type="application/json",
    )
    obj = screens.get_scene_object(slug, obj_id)
    collision = resp.get_json()["collision"]
    assert collision["width"] == obj["width"]
    assert collision["height"] == obj["height"]


def test_collision_route_404s_for_missing_object(client, game):
    resp = client.post(f"/game/{game}/scene-objects/999999/collision", data="{}", content_type="application/json")
    assert resp.status_code == 404


def test_full_game_payload_exposes_collision_settings_for_every_scene_object_kind(client, tmp_game_slug_cleanup):
    """Pas seulement "personnage" — un décor/fond peut aussi servir
    d'obstacle à une condition de collision."""
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    obj_id = _add_decor(client, slug, screen_id)

    payload = screens.full_game_payload(slug)
    scene_screen = next(s for s in payload["screens"] if s["id"] == screen_id)
    obj_payload = next(o for o in scene_screen["elements"] if o["id"] == obj_id)
    assert obj_payload["collision"]["enabled"] is True