"""Событие партии несёт список участников: по нему клиент решает, чьи витрины протухли."""
from __future__ import annotations

from fastapi.testclient import TestClient

from tests.conftest import add_group_member, csrf_headers, finish_match, login, start_match


def _capture_events(monkeypatch) -> list[tuple[list[int], dict]]:
    from app.core import events

    published: list[tuple[list[int], dict]] = []
    monkeypatch.setattr(
        events.hub, "publish", lambda ids, event: published.append((list(ids), event))
    )
    return published


def _match_events(published: list[tuple[list[int], dict]]) -> list[dict]:
    return [e for _ids, e in published if e.get("type") == "match"]


def test_match_event_carries_participants(client: TestClient, engine, monkeypatch):
    me = login(client, "Хост")
    exps = [e["id"] for e in client.get("/api/expansions").json()]
    gid = client.post(
        "/api/groups", json={"name": "Группа", "expansion_ids": exps}, headers=csrf_headers(client)
    ).json()["id"]
    p2 = add_group_member(engine, gid, "Игрок2")
    # Третий в группе, но НЕ в партии: его история от этой партии не меняется.
    p3 = add_group_member(engine, gid, "Зритель")
    fids = [f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()]

    published = _capture_events(monkeypatch)
    started = start_match(
        client, gid,
        [{"user_id": me["id"], "faction_id": fids[0]}, {"user_id": p2, "faction_id": fids[1]}],
    )
    assert started.status_code == 200, started.text
    mid = started.json()["id"]

    ev = _match_events(published)[-1]
    assert sorted(ev["participant_ids"]) == sorted([me["id"], p2])
    assert p3 not in ev["participant_ids"]

    published.clear()
    fin = finish_match(
        client, mid, [{"user_id": me["id"], "place": 1}, {"user_id": p2, "place": 2}]
    )
    assert fin.status_code == 200, fin.text
    assert sorted(_match_events(published)[-1]["participant_ids"]) == sorted([me["id"], p2])


def test_delete_event_carries_participants(client: TestClient, engine, monkeypatch):
    """Удаление — главный случай: строки участников уже уничтожены каскадом.

    Если собирать их после удаления, список всегда окажется пустым, и клиент не
    обновит историю тем, кто в этой партии играл."""
    me = login(client, "Хост")
    exps = [e["id"] for e in client.get("/api/expansions").json()]
    gid = client.post(
        "/api/groups", json={"name": "Группа", "expansion_ids": exps}, headers=csrf_headers(client)
    ).json()["id"]
    p2 = add_group_member(engine, gid, "Игрок2")
    fids = [f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()]
    mid = start_match(
        client, gid,
        [{"user_id": me["id"], "faction_id": fids[0]}, {"user_id": p2, "faction_id": fids[1]}],
    ).json()["id"]

    published = _capture_events(monkeypatch)
    version = client.get(f"/api/matches/{mid}").json()["version"]
    r = client.delete(
        f"/api/matches/{mid}", params={"expected_version": version}, headers=csrf_headers(client)
    )
    assert r.status_code == 200, r.text
    assert sorted(_match_events(published)[-1]["participant_ids"]) == sorted([me["id"], p2])