"""Адресаты событий партии. Рейтинг общий (#80): завершённая партия двигает витрины
всех игроков, поэтому игроки вне группы получают событие ratings (#88)."""
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 _recipients(published: list[tuple[list[int], dict]], kind: str) -> set[int]:
    return {uid for ids, e in published if e.get("type") == kind for uid in ids}


def _two_groups(client: TestClient, engine) -> tuple[dict, int, int, int, list[int]]:
    """Хост и Игрок2 в группе партии, Чужой — только в другой группе хоста."""
    me = login(client, "Хост")
    exps = [e["id"] for e in client.get("/api/expansions").json()]

    def group(name: str) -> int:
        return client.post(
            "/api/groups", json={"name": name, "expansion_ids": exps}, headers=csrf_headers(client)
        ).json()["id"]

    gid, other_gid = group("Группа"), group("Другая")
    p2 = add_group_member(engine, gid, "Игрок2")
    outsider = add_group_member(engine, other_gid, "Чужой")
    fids = [f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()]
    return me, gid, p2, outsider, fids


def test_finished_match_reaches_players_outside_group(client: TestClient, engine, monkeypatch):
    me, gid, p2, outsider, fids = _two_groups(client, engine)

    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
    # Незавершённая партия рейтинг не двигает — знать о ней нужно только группе.
    assert _recipients(published, "match") == {me["id"], p2}
    assert _recipients(published, "ratings") == set()

    published.clear()
    fin = finish_match(
        client, started.json()["id"], [{"user_id": me["id"], "place": 1}, {"user_id": p2, "place": 2}]
    )
    assert fin.status_code == 200, fin.text
    assert _recipients(published, "match") == {me["id"], p2}
    ratings = _recipients(published, "ratings")
    assert outsider in ratings
    assert not ratings & {me["id"], p2}  # группа уже получила подробное событие


def test_deleting_finished_match_reaches_players_outside_group(
    client: TestClient, engine, monkeypatch
):
    """Удаление завершённой партии пересчитывает рейтинг всех, кто играл после неё."""
    me, gid, p2, outsider, fids = _two_groups(client, engine)
    mid = start_match(
        client, gid,
        [{"user_id": me["id"], "faction_id": fids[0]}, {"user_id": p2, "faction_id": fids[1]}],
    ).json()["id"]
    finish_match(client, mid, [{"user_id": me["id"], "place": 1}, {"user_id": p2, "place": 2}])

    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 _recipients(published, "match") == {me["id"], p2}
    assert outsider in _recipients(published, "ratings")


def _finished_match(client: TestClient, me: dict, p2: int, gid: int, fids: list[int]) -> int:
    mid = start_match(
        client, gid,
        [{"user_id": me["id"], "faction_id": fids[0]}, {"user_id": p2, "faction_id": fids[1]}],
    ).json()["id"]
    finish_match(client, mid, [{"user_id": me["id"], "place": 1}, {"user_id": p2, "place": 2}])
    return mid


def _patch_match(client: TestClient, mid: int, me: dict, p2: int, fids: list[int], **changes):
    """PATCH как у формы правки: состав передаётся целиком, даже если меняется комментарий."""
    places = changes.pop("places", (1, 2))
    body = {
        "expected_version": client.get(f"/api/matches/{mid}").json()["version"],
        "participants": [
            {"user_id": me["id"], "faction_id": fids[0], "place": places[0]},
            {"user_id": p2, "faction_id": fids[1], "place": places[1]},
        ],
        **changes,
    }
    r = client.patch(f"/api/matches/{mid}", json=body, headers=csrf_headers(client))
    assert r.status_code == 200, r.text


def test_comment_edit_does_not_broadcast_ratings(client: TestClient, engine, monkeypatch):
    """Правка без влияния на рейтинг — событие только группе: остальным игрокам незачем
    перезапрашивать все рейтинговые витрины."""
    me, gid, p2, outsider, fids = _two_groups(client, engine)
    mid = _finished_match(client, me, p2, gid, fids)

    published = _capture_events(monkeypatch)
    _patch_match(client, mid, me, p2, fids, overall_comment="Хорошая партия")
    assert _recipients(published, "match") == {me["id"], p2}
    assert _recipients(published, "ratings") == set()


def test_result_edit_broadcasts_ratings(client: TestClient, engine, monkeypatch):
    me, gid, p2, outsider, fids = _two_groups(client, engine)
    mid = _finished_match(client, me, p2, gid, fids)

    published = _capture_events(monkeypatch)
    _patch_match(client, mid, me, p2, fids, places=(2, 1))
    assert outsider in _recipients(published, "ratings")


def test_group_settings_change_reaches_members(client: TestClient, engine, monkeypatch):
    """Переключение домашнего правила видно остальным участникам без перезагрузки."""
    me, gid, p2, outsider, fids = _two_groups(client, engine)

    published = _capture_events(monkeypatch)
    r = client.patch(
        f"/api/groups/{gid}", json={"nine_rounds_rule": True}, headers=csrf_headers(client)
    )
    assert r.status_code == 200, r.text
    assert _recipients(published, "group") == {me["id"], p2}