def test_create_and_list_sets(client):
    resp = client.post("/sets", json={"name": "Enemy", "description": "Enemy sprites"})
    assert resp.status_code == 201

    resp = client.get("/sets")
    assert resp.status_code == 200
    assert [s["name"] for s in resp.json()] == ["Enemy"]


def test_create_set_rejects_duplicate_name(client):
    client.post("/sets", json={"name": "Enemy"})
    resp = client.post("/sets", json={"name": "Enemy"})
    assert resp.status_code == 409


def test_get_missing_set(client):
    resp = client.get("/sets/999")
    assert resp.status_code == 404


def test_create_main_and_sub_class(client):
    set_id = client.post("/sets", json={"name": "Enemy"}).json()["id"]

    resp = client.post(f"/sets/{set_id}/main-classes", json={"name": "Enemy"})
    assert resp.status_code == 201
    main_class_id = resp.json()["id"]

    resp = client.post(f"/main-classes/{main_class_id}/sub-classes", json={"name": "Bat"})
    assert resp.status_code == 201
    assert resp.json()["name"] == "Bat"

    resp = client.get(f"/sets/{set_id}")
    assert resp.json()["main_classes"][0]["sub_classes"][0]["name"] == "Bat"


def test_main_class_requires_existing_set(client):
    resp = client.post("/sets/999/main-classes", json={"name": "Enemy"})
    assert resp.status_code == 404


def test_sub_class_rejects_duplicate_name_under_same_main_class(client):
    set_id = client.post("/sets", json={"name": "Enemy"}).json()["id"]
    main_class_id = client.post(f"/sets/{set_id}/main-classes", json={"name": "Enemy"}).json()["id"]
    client.post(f"/main-classes/{main_class_id}/sub-classes", json={"name": "Bat"})

    resp = client.post(f"/main-classes/{main_class_id}/sub-classes", json={"name": "Bat"})
    assert resp.status_code == 409