import assert from 'node:assert/strict';
import test from 'node:test';
import { readFileSync } from 'node:fs';
import { runInNewContext } from 'node:vm';
import { createElement, type ReactNode } from 'react';
import * as jsxRuntime from 'react/jsx-runtime';
import { renderToStaticMarkup } from 'react-dom/server';
import ts from 'typescript';
import { RicheseAuctionCountdown } from '../components/richese-auction-countdown';
import type { AuctionClockView } from '../game/auction-clock';

const frame = (remainingMs = 10_000, running = true, event: string | null = 'bid-event'): AuctionClockView =>
  ({ event, player: 'p', remainingMs, running });
const html = (clock: AuctionClockView | null, method: 'onceAround' | 'normal', paused = false) =>
  renderToStaticMarkup(createElement(RicheseAuctionCountdown, { clock, playerName: 'Respondent', method, paused }));

void test('sequential Richese countdown presents the live bidder, method and server-controlled expiry', () => {
  for (const [method, label] of [['onceAround', 'Once Around'], ['normal', 'Black Market']] as const) {
    const clock = frame(1001), before = structuredClone(clock), markup = html(clock, method);
    assert.match(markup, new RegExp(`${label} auction countdown`));
    assert.match(markup, /Respondent may bid or pass/);
    assert.match(markup, /2 seconds remaining/);
    assert.match(markup, /role="timer" aria-live="off"/);
    assert.match(markup, /server controls the deadline/);
    if (method === 'onceAround') {
      assert.match(markup, /provisional online interpretation/);
      assert.match(markup, /binding Truthtrance answer/);
    }
    assert.doesNotMatch(markup, /<button|<form|Continue/);
    assert.deepEqual(clock, before);
  }
  assert.equal(html(null, 'onceAround'), '');
});

void test('Richese countdown keeps unarmed, held, paused and expired states distinct', () => {
  assert.match(html(frame(10_000, false, null), 'onceAround'), /Clock starts when bidding is ready/);
  assert.match(html(frame(6_200, false), 'normal'), /held while the current game decision finishes/);
  assert.match(html(frame(6_200), 'onceAround', true), /Auction paused/);
  assert.match(html(frame(0, false), 'onceAround'), /Awaiting server resolution/);
  assert.match(html(frame(0, false), 'onceAround'), /0 seconds remaining/);
});

/** Exercise the real effect with a controlled monotonic browser clock. */
function browserDisplay(initial: Parameters<typeof RicheseAuctionCountdown>[0]) {
  type Effect = { dependencies: readonly unknown[]; cleanup?: () => void };
  const states: unknown[] = [], effects: Effect[] = [], pending: (() => void)[] = [];
  const intervals = new Map<number, () => void>();
  let stateIndex = 0, effectIndex = 0, now = 0, nextTimer = 0, props = initial;
  const exports: { RicheseAuctionCountdown?: typeof RicheseAuctionCountdown } = {};
  runInNewContext(ts.transpileModule(readFileSync(new URL('../components/richese-auction-countdown.tsx', import.meta.url), 'utf8'), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2022, jsx: ts.JsxEmit.ReactJSX },
  }).outputText, {
    exports,
    performance: { now: () => now },
    setInterval(callback: () => void, ms: number) { assert.equal(ms, 200); const timer = ++nextTimer; intervals.set(timer, callback); return timer; },
    clearInterval(timer: number) { intervals.delete(timer); },
    require(name: string) {
      if (name === 'react/jsx-runtime') return jsxRuntime;
      assert.equal(name, 'react');
      return {
        useState(initialValue: unknown) {
          const index = stateIndex++;
          if (!(index in states)) states[index] = initialValue;
          return [states[index], (next: unknown) => { states[index] = next; }];
        },
        useEffect(callback: () => (() => void) | undefined, dependencies: readonly unknown[]) {
          const index = effectIndex++, previous = effects[index];
          if (previous && dependencies.every((dependency, i) => Object.is(dependency, previous.dependencies[i]))) return;
          pending.push(() => { previous?.cleanup?.(); effects[index] = { dependencies, cleanup: callback() }; });
        },
      };
    },
  });
  assert.ok(exports.RicheseAuctionCountdown);
  const render = () => {
    stateIndex = 0; effectIndex = 0;
    const node: ReactNode = exports.RicheseAuctionCountdown!(props);
    const markup = renderToStaticMarkup(node);
    while (pending.length) pending.shift()!();
    return markup;
  };
  return {
    render,
    update(next: typeof initial) { props = next; return render(); },
    advance(ms: number) { now += ms; for (const callback of intervals.values()) callback(); return render(); },
    get ticking() { return intervals.size; },
  };
}

void test('local countdown follows elapsed time and stops while paused or awaiting the server', () => {
  const display = browserDisplay({ clock: frame(), playerName: 'Respondent', method: 'onceAround' });
  assert.match(display.render(), /10 seconds remaining/); assert.equal(display.ticking, 1);
  assert.match(display.advance(5401), /5 seconds remaining/);
  assert.match(display.update({ clock: frame(2000, false), playerName: 'Respondent', method: 'onceAround' }), /2 seconds remaining/);
  assert.equal(display.ticking, 0);
  assert.match(display.update({ clock: frame(1000), playerName: 'Respondent', method: 'normal' }), /Black Market/);
  assert.match(display.advance(1000), /Awaiting server resolution/); assert.equal(display.ticking, 0);
  assert.equal(display.update({ clock: null, playerName: 'Respondent', method: 'normal' }), '');
});