/**
 * Save-system UI integration driver (headless browser — NOT a Node test).
 *
 * Drives the REAL game through the full save flow and checks every seam:
 *
 *   GameScene:  MENU button → sub-bar folds up → Load grayed (empty bank)
 *               → Save Game → the 10-slot pop-up (save mode)
 *               → doSave(1) writes the bank
 *               → overwrite confirm opens, CANCEL leaves the save intact
 *               → the panel reopens in LOAD mode, empty slots inert
 *               → LOAD confirm → the restore stages → cut to the menu
 *   MenuScene:  Load Game is live (the bank has a save) → its own load
 *               pop-up → LOAD confirm → the staged restore rides into a
 *               fresh GameScene — ship back where it was, the session
 *               time, the tether field.
 *
 * Served by dev/saves-ui-test.html; the results land in
 * `window.__SAVES_UI__` for the CDP runner (dev/cdp-firefox.mjs):
 *
 *   python3 -m http.server 8080
 *   node dev/cdp-firefox.mjs http://localhost:8080/dev/saves-ui-test.html
 */
import Phaser from '../js/vendor/phaser.js';
import { config } from '../js/config/Config.js';
import { ConfigLoader } from '../js/config/ConfigLoader.js';
import { createGameConfig } from '../js/config/GameConfig.js';
import { MenuScene } from '../js/scenes/MenuScene.js';
import { GameScene } from '../js/scenes/GameScene.js';

const data = await ConfigLoader.load();
config.init(data);

// A deterministic galaxy (same system every run) + a quiet run (no audio
// files to fetch in headless).
globalThis.__ORBIT_DEV_SEED = 'SAVETEST';
const gameConfig = createGameConfig();
gameConfig.scene = [GameScene, MenuScene]; // GameScene boots first
if (typeof Phaser !== 'undefined') Phaser.NoAudioContext = true;

const game = new Phaser.Game(gameConfig);
window.game = game;

const results = [];
const check = (label, cond) => {
  const pass = !!cond;
  results.push({ label, pass });
  console.log(`${pass ? '✔' : '✘ FAIL'}  ${label}`);
};

// WAIT — throttling-proof. This headless box starves setTimeout and
// stretches its compositor clock, so the only honest barrier is the
// GAME'S OWN CLOCK: Phaser v4 sets scene time.now from the engine loop
// time (shared by all scenes, monotonic across scene transitions). We
// poll it on rAF until it has advanced past the base.
const gameClock = () => {
  try {
    const s = window.game.scene.getScenes(true)[0];
    if (s && typeof s.time.now === 'number') return s.time.now;
  } catch {}
  return null;
};
const wait = (ms) => new Promise((resolve) => {
  const base = gameClock();
  if (base === null) { // pre-boot: fall back to wall clock
    const start = performance.now();
    setTimeout(() => resolve(), ms);
    return;
  }
  const poll = () => {
    const now = gameClock();
    if (now !== null && now - base >= ms) return resolve();
    requestAnimationFrame(poll);
  };
  requestAnimationFrame(poll);
});

// A real mouse press at CANVAS screen coords (x, y). Phaser 4.2.1 binds
// mousedown/mouseup/mousemove on the canvas element, so a dispatched
// MouseEvent drives the full input pipeline (pointer → scene handler →
// interactive objects). FIT mode scales the canvas, so map canvas →
// client space with the rendered rect (not 1:1 pixels).
const press = (x, y) => {
  const canvas = game.canvas;
  const r = canvas.getBoundingClientRect();
  const zoom = r.width / canvas.width;
  const mk = (type, buttons) => new MouseEvent(type, {
    bubbles: true,
    cancelable: true,
    view: window,
    button: 0,
    buttons,
    clientX: r.left + x * zoom,
    clientY: r.top + y * zoom,
  });
  canvas.dispatchEvent(mk('mouseover', 0));
  canvas.dispatchEvent(mk('mousedown', 1));
  canvas.dispatchEvent(mk('mouseup', 0));
};


const run = async () => {
  const scene = game.scene.getScene('GameScene');
  await wait(900); // boot: galaxy, system, deck, sub-bar, panel
  check('boots into GameScene', game.scene.isActive('GameScene'));
  check('the sub-bar + panel exist', !!scene.menuSubBar && !!scene.savePanel);

  // ---- the sub-bar folds up out of MENU --------------------------------
  scene.menuAction();
  await wait(450);
  check('MENU folds the sub-bar up', scene.menuSubBar.isOpen);
  // Every button must sit INSIDE the bar (and the canvas) — the body is
  // drawn about the container origin, so the row must be centered on it.
  check('all sub-bar buttons are inside the bar and the canvas',
    scene.menuSubBar.buttons.every((s) => {
      const bar = scene.menuSubBar;
      const wx = bar.x + s.btn.x;
      const half = s.btn.style.width / 2;
      return Math.abs(s.btn.x) <= bar.W / 2 + 1
        && wx - half >= -1 && wx + half <= scene.scale.width + 1;
    }));
  check('Load Game is grayed while the bank is empty',
    scene.menuSubBar.buttons.find((b) => b.id === 'load').btn.disabled === true);

  // ---- the pop-up: SAVE mode --------------------------------------------
  scene.subBarAction('save');
  await wait(450);
  check('Save Game opens the 10-slot pop-up (save mode)',
    scene.savePanel.isOpen && scene.savePanel.mode === 'save' && scene.savePanel.cards.length === 10);
  // Geometry sanity: the panel and every card/footer button must sit at
  // FINITE positions inside the canvas (NaN y = the use-before-assign bug).
  check('panel + cards + footer have finite positions inside the canvas',
    Number.isFinite(scene.savePanel.W) && Number.isFinite(scene.savePanel.H)
    && scene.savePanel.cards.every((c) => {
      const x = scene.savePanel.x + c.x;
      const y = scene.savePanel.y + c.y;
      return Number.isFinite(x) && Number.isFinite(y)
        && x >= -1 && x <= scene.scale.width + 1 && y >= -1 && y <= scene.scale.height + 1;
    })
    && [scene.savePanel.cancelBtn, scene.savePanel.downloadBtn].every((b) =>
      Number.isFinite(scene.savePanel.x + b.x) && Number.isFinite(scene.savePanel.y + b.y)));

  // DOWNLOAD ALL SAVED GAMES fits INSIDE the window (right edge ≤ the
  // plate's inner edge — the label outgrows the fixed 210 px box, so the
  // button must be pinned by its actual width).
  check('the DOWNLOAD ALL button fits inside the panel',
    scene.savePanel.x + scene.savePanel.downloadBtn.x + scene.savePanel.downloadBtn.width / 2
      <= scene.savePanel.x + scene.savePanel.W / 2 + 1);

  // The header decodes run LONGER than the crack-open (decodeDur > openMs);
  // once the window settles they must hold the FINAL strings — not the
  // mid-scramble garbage the frozen drive left on screen.
  await wait(1200);
  check('the title decode completes (no mid-scramble garbage)',
    scene.savePanel.title.text === String(config.get('save.panel.title.save', 'SAVE GAME')).toUpperCase());
  check('the subtitle decode completes',
    scene.savePanel.subtitle.text === String(config.get('save.panel.subtitle.save', '')).toUpperCase());

  // A REAL pointer press on an empty slot saves the game — the whole
  // click path (hit-test → SlotCard.press → onCard → doSave → bank), not
  // a direct doSave() call.
  const card2 = scene.savePanel.cards[1];
  check('slot 2 is empty before the click', scene.saveManager.get(2) === null);
  press(scene.savePanel.x + card2.x, scene.savePanel.y + card2.y);
  await wait(250);
  const rec2 = scene.saveManager.get(2);
  check('a pointer click on slot 2 saves the game',
    rec2 !== null && rec2.seed === scene.galaxy.seed && rec2.ship.x === scene.ship.x);

  // A direct write to slot 1 (the same path the confirm dialog uses).
  scene.savePanel.doSave(1);
  await wait(120);
  const rec1 = scene.saveManager.get(1);
  check('doSave(1) writes the bank', rec1 !== null && rec1.seed === scene.galaxy.seed && rec1.ship.x === scene.ship.x);
  // Capture fidelity: the bank's session time is the scene's at capture
  // (a frame or two may have ticked since — small tolerance).
  check('the bank captured the session time',
    rec1.playTimeMs > 0 && rec1.playTimeMs <= Math.round(scene.playTimeMs) + 200 && rec1.playTimeMs >= Math.round(scene.playTimeMs) - 400);

  // ---- overwrite confirm: open, CANCEL, the save is intact --------------
  scene.savePanel.confirmOverwrite(1, rec1);
  await wait(300);
  check('overwrite raises the confirm dialog', scene.savePanel.confirm.isOpen);
  const before = JSON.stringify(scene.saveManager.get(1));
  scene.savePanel.confirm.cancel();
  await wait(300);
  check('CANCEL closes the dialog', scene.savePanel.confirm.isOpen === false);
  check('CANCEL left the slot intact', JSON.stringify(scene.saveManager.get(1)) === before);

  // ---- the pop-up: LOAD mode --------------------------------------------
  scene.savePanel.close();
  await wait(350);
  scene.savePanel.show('load');
  await wait(450);
  check('the panel reopens in LOAD mode', scene.savePanel.isOpen && scene.savePanel.mode === 'load');
  check('empty slots are inert in load mode',
    scene.savePanel.cards[2].disabled === true && scene.savePanel.cards[0].disabled === false);

  // ---- load confirm: stage the restore, cut to the menu -----------------
  const shipX = scene.ship.x;
  const shipY = scene.ship.y;
  scene.savePanel.confirmLoad(1, scene.saveManager.get(1));
  await wait(300);
  scene.savePanel.confirm.fireConfirm();
  await wait(700); // close anim → onLoadComplete → scene.start
  check('a confirmed LOAD cuts to the main menu', game.scene.isActive('MenuScene'));

  // ---- the menu side ------------------------------------------------------
  const menu = game.scene.getScene('MenuScene');
  await wait(400);
  check('the menu shows a (live) Load Game button',
    !!menu.loadGameBtn && menu.loadGameBtn.disabled === false);

  menu.openLoadPanel();
  await wait(450);
  check('the menu opens the load pop-up', menu.savePanel.isOpen && menu.savePanel.mode === 'load');

  menu.savePanel.confirmLoad(1, menu.saveManager.get(1));
  await wait(300);
  menu.savePanel.confirm.fireConfirm();
  await wait(1100); // close anim → cut → GameScene.create (galaxy + restore)
  check('the game is back from the menu', game.scene.isActive('GameScene'));

  const gs = game.scene.getScene('GameScene');
  const rec = gs.saveManager.get(1);
  check('the ship is back where the save parked it',
    rec && Math.abs(gs.ship.x - rec.ship.x) < 0.01 && Math.abs(gs.ship.y - rec.ship.y) < 0.01);
  check('the saved ship was where it had flown', Math.abs(rec.ship.x - shipX) < 0.01 && Math.abs(rec.ship.y - shipY) < 0.01);
  // Restore fidelity: the restored value is the BANK's value (rec1), plus
  // the session time accumulated since GameScene.create (the wait above +
  // a few frames). update() caps per-frame accumulation at 100ms
  // (anti-fast-forward), which matters on throttled headless frames — so
  // the upper bound is generous; the lower bound is exact (restore is a
  // hard set, accumulation only adds).
  const restoredT = gs.playTimeMs;
  check(`the session time restored (bank=${rec1.playTimeMs}ms, now=${Math.round(restoredT)}ms)`,
    restoredT >= rec1.playTimeMs && restoredT <= rec1.playTimeMs + 4000);
  check('the tether field restored', gs.tetherField.tethers.length === (rec.tethers ?? []).length && gs.tetherField.tethers.length >= 1);
  check('discovery survived (registry hand-off)', gs.discovery instanceof Object && gs.discovery.distance > 0);

  // The sub-bar again after the load: Load Game is live now.
  scene.menuAction?.call(gs);
  await wait(450);
  check('after the load, Load Game is live in the sub-bar',
    gs.menuSubBar.isOpen && gs.menuSubBar.buttons.find((b) => b.id === 'load').btn.disabled === false);
};

let done = false;
game.events.once('ready', async () => {
  try {
    await run();
  } catch (err) {
    console.error(err);
    results.push({ label: `DRIVER CRASHED: ${err.message}`, pass: false });
  }
  const pass = results.length > 0 && results.every((r) => r.pass);
  window.__SAVES_UI__ = { pass, results };
  done = true;
  console.log(`SAVES-UI ${pass ? 'PASS' : 'FAIL'} (${results.filter((r) => r.pass).length}/${results.length})`);
});

// Hard stop: if the flow never finishes, the runner will report the
// in-flight results as a failure. (rAF + monotonic clock — the same
// throttling-proof primitive as wait().)
const hardStop = (t0) => {
  if (performance.now() - t0 >= 300000) {
    if (!done) {
      window.__SAVES_UI__ = { pass: false, results: [...results, { label: 'TIMED OUT (300s)', pass: false }] };
      console.log('SAVES-UI FAIL (timed out)');
    }
    return;
  }
  requestAnimationFrame(() => hardStop(t0));
};
requestAnimationFrame(() => hardStop(performance.now()));