import { GameManager } from "./GameManager";

export const CLOCK_CHECK_INTERVAL_MS = 1_000;

// The scheduled service that ends games whose running clock has reached zero, also when nobody is connected
// (docs/specs/game-clock, R2.2). A move that arrives late is refused by GameManager itself, so how often this runs
// only decides how soon the end is announced, never who wins.
export class GameClockScheduler {
    private timer?: NodeJS.Timeout;

    constructor(
        private readonly gameManager: Pick<GameManager, "endGamesOutOfTime">,
        private readonly intervalMs = CLOCK_CHECK_INTERVAL_MS,
    ) { }

    start() {
        if (this.timer) return;
        this.timer = setInterval(() => this.gameManager.endGamesOutOfTime(), this.intervalMs);
    }

    stop() {
        if (this.timer) clearInterval(this.timer);
        this.timer = undefined;
    }
}