/**
 * The top bar after its rework (#183): five icon buttons and no captions at all. What it used to
 * spell out moved into the one menu – the project list into "Open project…", the project name and
 * the start-scene switch into "Project settings…" next to the collision layers.
 *
 * Runs last, and on purpose: the project picker is opened here and left again with Cancel. Opening
 * or deleting a project for real would pull the project out from under every step before this one.
 */
export async function topbar(t) {
  const { check, json, has, shot, clickText, clickToolbar, typeText, press, sleep, waitUntil } = t;

  await press('Escape');

  // 46a. Nothing in the bar is written any more. The five words it used to carry are asked for as
  //      drawn text: the buttons are still there, only their captions are gone.
  const captions = {
    project: await has('Project'),
    undo: await has('Undo'),
    redo: await has('Redo'),
    play: await has('Play'),
    pause: await has('Pause'),
  };
  check(
    'the top bar carries no captions any more – menu, undo, redo, play and pause are icons',
    Object.values(captions).every((shown) => shown === false),
    JSON.stringify(captions),
  );
  const buttons = await json('__gm.runButtons()');
  check(
    'in edit mode the run buttons offer play and nothing to pause',
    buttons.play === 'play' &&
      buttons.pause === 'pause' &&
      buttons.playEnabled === true &&
      buttons.pauseEnabled === false,
    JSON.stringify(buttons),
  );
  // The pair is centred on the bar itself. The row cannot do that on its own: the spacers around
  // the two buttons share the free space with the flexible notice and so get a third of it each,
  // which used to leave the pair well left of the middle.
  const play = await json('__gm.toolbarAt("play")');
  const pause = await json('__gm.toolbarAt("pause")');
  const barCentre = await json('window.innerWidth / 2');
  check(
    'play and pause sit on the middle of the bar, not on the middle of what is left over',
    Math.abs((play.x + pause.x) / 2 - barCentre) <= 2,
    JSON.stringify({ middle: (play.x + pause.x) / 2, barCentre }),
  );
  await shot('46-topbar');

  // 46b. The one menu, with the separator between what opens a project and what changes the one
  //      that is open. Clearing the saved data is checked in 32.
  await clickToolbar('menu');
  const rows = await json('__gm.menuRows()');
  const expected = [
    'New project',
    'Open project…',
    null,
    'Snapshots…',
    'Project settings…',
    'Clear saved data',
    null,
    'Plugins',
  ];
  check(
    'the menu button opens new project, the project picker, the settings, clearing saves and the plugins',
    JSON.stringify(rows) === JSON.stringify(expected),
    JSON.stringify(rows),
  );

  // 46c. The picker lists what the account owns, with the open project picked, and Cancel leaves
  //      that project exactly where it was.
  await clickText('Open project…');
  // The picker fetches the list before it can open, so it is waited for rather than read at once.
  await waitUntil('__gm.projectPicker() !== null', { label: 'the project picker opened' });
  const picker = await json('__gm.projectPicker()');
  const projectId = await json('__gm.state.project.id');
  const projectName = await json('__gm.state.project.name');
  check(
    '"Open project…" lists the projects with the open one picked',
    picker !== null && picker.picked === projectId && picker.names.includes(projectName),
    JSON.stringify({ picker, projectId, projectName }),
  );
  await clickText('Cancel');
  check(
    'Cancel closes the picker and leaves the project loaded',
    (await json('__gm.projectPicker()')) === null && (await json('__gm.state.project.id')) === projectId,
    JSON.stringify({ picker: await json('__gm.projectPicker()'), id: await json('__gm.state.project.id') }),
  );

  // 46d. The settings dialog holds the name, the start-scene switch and the collision layers of
  //      #152 – the three things the bar itself used to carry.
  await clickToolbar('menu');
  await clickText('Project settings…');
  const settings = await json('__gm.projectSettings()');
  const layers = await json('__gm.collisionLayers()');
  check(
    '"Project settings…" opens on the project as it stands',
    settings?.name === projectName &&
      (settings.playFrom === 'start' || settings.playFrom === 'active') &&
      JSON.stringify(layers.dialog) === JSON.stringify(layers.project),
    JSON.stringify({ settings, layers }),
  );

  // 46e. Renaming through it, and the icon buttons undoing and redoing it. The name is read off the
  //      project rather than written down here: CI seeds the same project under a different name.
  const nameField = await t.locate(projectName);
  await t.doubleClick(nameField.x, nameField.y);
  await press('a', { ctrl: true });
  await typeText('Renamed by 46');
  await press('Enter');
  await clickText('Apply');
  await sleep(200);
  check(
    'Apply renames the project',
    (await json('__gm.state.project.name')) === 'Renamed by 46',
    await json('__gm.state.project.name'),
  );
  await clickToolbar('undo');
  await sleep(200);
  const undone = await json('__gm.state.project.name');
  await clickToolbar('redo');
  await sleep(200);
  const redone = await json('__gm.state.project.name');
  check(
    'the undo and redo buttons of the bar walk the rename back and forth',
    undone === projectName && redone === 'Renamed by 46',
    JSON.stringify({ undone, redone, was: projectName }),
  );
  // Back to the name the rest of the world knows it by.
  await clickToolbar('undo');
  await sleep(200);
  check(
    'the project is handed back under its own name',
    (await json('__gm.state.project.name')) === projectName,
    await json('__gm.state.project.name'),
  );

  // 46f. The symbol scale in the same dialog: 1 by default, typed down to 0.5, and every icon of the
  //      scene drawn at half its side (18 → 9 world units), undone in one step.
  const iconSize = () =>
    json(`(() => {
      const p = __gm.state.project;
      const scene = p.assets.find((a) => a.id === p.activeSceneId);
      const id = (scene?.objects ?? []).map((o) => o.id).find((id) => __gm.sceneIcon(id)?.visible);
      return id ? __gm.sceneIcon(id).size : null;
    })()`);
  await clickToolbar('menu');
  await clickText('Project settings…');
  const opened = await json('__gm.projectSettings()');
  const field = await json('__gm.projectSettingsSymbolScaleAt()');
  await t.click(field.x, field.y);
  await press('a', { ctrl: true });
  await typeText('0.5');
  await press('Enter');
  await clickText('Apply');
  await sleep(200);
  const scaled = { project: await json('__gm.state.project.symbolScale'), icon: await iconSize() };
  await clickToolbar('undo');
  await sleep(200);
  const restored = { project: await json('__gm.state.project.symbolScale'), icon: await iconSize() };
  check(
    'the symbol scale starts at 1, Apply halves every scene icon, and undo gives the size back',
    opened?.symbolScale === 1 &&
      scaled.project === 0.5 &&
      Math.abs(scaled.icon - 9) < 1e-9 &&
      restored.project === 1 &&
      Math.abs(restored.icon - 18) < 1e-9,
    JSON.stringify({ opened, scaled, restored }),
  );
  await t.saved();
}