/**
 * Fullscreen of the game tab (#267): the button in its header puts the game view on its own into
 * fullscreen – no toolbar, no panels, no header –, the game keeps running, and the button in the
 * corner puts the view back under its header. Stopping the game from fullscreen ends it as well.
 */
export async function fullscreen(t) {
  const { check, json, click, sleep, play, stop, shot, press, exceptions } = t;
  const info = async () => ({
    ...(await json('__gm.gameFullscreen()')),
    view: (await json('__gm.gameScale()')).view,
  });
  const size = { w: await json('innerWidth'), h: await json('innerHeight') };

  await press('Escape');
  await play();
  const windowed = await info();

  // 61a. The header button: the game view alone fills the page, and the game goes on.
  await click(windowed.headerButton.x, windowed.headerButton.y);
  await sleep(500);
  const full = { ...(await info()), mode: await json('__gm.state.mode') };
  check(
    'the header button puts the running game view alone into fullscreen',
    windowed.view.y > 0 &&
      full.on &&
      full.document &&
      full.headerButton === null &&
      full.view.x === 0 &&
      full.view.y === 0 &&
      full.view.w === size.w &&
      full.view.h === size.h &&
      full.mode === 'play',
    JSON.stringify({ size, windowed, full }),
  );
  await shot('61-fullscreen');

  // 61b. The corner button leaves it, and the view is back under its header, as big as before.
  if (full.corner) await click(full.corner.x, full.corner.y);
  await sleep(500);
  const back = await info();
  check(
    'the corner button leaves fullscreen and puts the view back in its tab',
    full.corner !== null &&
      !back.on &&
      !back.document &&
      back.headerButton !== null &&
      JSON.stringify(back.view) === JSON.stringify(windowed.view),
    JSON.stringify({ corner: full.corner, back }),
  );

  // 61c. Stop goes back to the scene tab, which ends fullscreen too.
  await click(back.headerButton.x, back.headerButton.y);
  await sleep(500);
  const again = await info();
  await stop();
  await sleep(300);
  const stopped = await info();
  check(
    'stopping the game from fullscreen ends fullscreen',
    again.on && !stopped.on && !stopped.document,
    JSON.stringify({ again: again.on, stopped }),
  );
  check('fullscreen threw nothing', exceptions().length === 0, exceptions().join(' | '));
}