import type { Clock } from '../src/server/clock.js';
export class ManualClock implements Clock {
  time = Date.now(); id = 0;
  timers = new Map<number, { at: number; callback: () => void }>();
  now = () => this.time;
  setTimeout = (callback: () => void, delay: number) => { const id = ++this.id; this.timers.set(id, { at: this.time + delay, callback }); return id; };
  clearTimeout = (id: any) => { this.timers.delete(id); };
  async advance(ms: number) {
    const target = this.time + ms;
    for (;;) {
      const next = [...this.timers.entries()].filter(([, t]) => t.at <= target).sort((a, b) => a[1].at - b[1].at)[0];
      if (!next) break;
      this.time = next[1].at; this.timers.delete(next[0]); next[1].callback();
      await new Promise(r => setTimeout(r, 20));
    }
    this.time = target; await new Promise(r => setTimeout(r, 20));
  }
}